Version: 2023.08
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This area was updated. Please refer to the CPC Notices of Changes and Notices of Editorial Corrections for more information.
CPC | COOPERATIVE PATENT CLASSIFICATION | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| H04L | TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) [2022-05] NOTES
WARNINGS
|
H04L 1/00 | Arrangements for detecting or preventing errors in the information received {(correcting synchronisation H04L 7/00)} [2021-08] |
H04L 1/0001 | . | {Systems modifying transmission characteristics according to link quality, e.g. power backoff (adaptive data allocation for multicarrier modulation H04L 5/0044; controlling transmission power for radio systems H04W 52/04)} [2013-01] |
H04L 1/0002 | . . | {by adapting the transmission rate} [2013-01] |
H04L 1/0006 | . . | {by adapting the transmission format} [2013-01] |
H04L 1/0007 | . . . | {by modifying the frame length} [2013-01] |
H04L 1/0008 | . . . . | {by supplementing frame payload, e.g. with padding bits} [2013-01] |
H04L 1/0009 | . . | {by adapting the channel coding (H04L 1/1812 takes precedence)} [2013-01] |
H04L 1/001 | . . . | {applied to control information} [2013-01] |
H04L 1/0011 | . . . | {applied to payload information} [2013-01] |
H04L 1/0013 | . . . | {Rate matching, e.g. puncturing or repetition of code symbols} [2013-01] |
H04L 1/0014 | . . | {by adapting the source coding} [2013-01] |
H04L 1/0015 | . . | {characterised by the adaptation strategy} [2013-01] |
H04L 1/0016 | . . . | {involving special memory structures, e.g. look-up tables} [2013-01] |
H04L 1/0017 | . . . | {where the mode-switching is based on Quality of Service requirement} [2013-01] |
H04L 1/0019 | . . . | {in which mode-switching is based on a statistical approach} [2013-01] |
H04L 1/002 | . . . . | {Algorithms with memory of the previous states, e.g. Markovian models} [2013-01] |
H04L 1/0021 | . . . . | {in which the algorithm uses adaptive thresholds} [2013-01] |
H04L 1/0022 | . . . | {in which mode-switching is influenced by the user} [2013-01] |
H04L 1/0023 | . . | {characterised by the signalling} [2013-01] |
H04L 1/0025 | . . . | {Transmission of mode-switching indication} [2013-01] |
H04L 1/0026 | . . . | {Transmission of channel quality indication} [2013-01] |
H04L 1/0027 | . . . | {Scheduling of signalling, e.g. occurrence thereof} [2013-01] |
H04L 1/0028 | . . . | {Formatting} [2013-01] |
H04L 1/0029 | . . . . | {Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling (power control H04W 52/04)} [2013-01] |
H04L 1/003 | . . . . | {Adaptive formatting arrangements particular to signalling, e.g. variable amount of bits} [2013-01] |
H04L 1/0031 | . . . . | {Multiple signaling transmission (H04L 1/1664, F15 take precedence)} [2013-01] |
H04L 1/0032 | . . . | {Without explicit signalling} [2013-01] |
H04L 1/0033 | . . | {arrangements specific to the transmitter} [2013-01] |
H04L 1/0034 | . . . | {where the transmitter decides based on inferences, e.g. use of implicit signalling} [2013-01] |
H04L 1/0035 | . . . | {evaluation of received explicit signalling} [2013-01] |
H04L 1/0036 | . . | {arrangements specific to the receiver} [2013-01] |
H04L 1/0038 | . . . | {Blind format detection (for detection of modulation format H04L 27/0012)} [2013-01] |
H04L 1/0039 | . . . | {other detection of signalling, e.g. detection of TFCI explicit signalling (H04L 1/0046, H04L 27/0012 and H04L 25/0262 take precedence)} [2013-01] |
H04L 1/004 | . | {by using forward error control (H04L 1/0618 takes precedence; coding, decoding or code conversion, for error detection or correction H03M 13/00)} [2013-01] |
H04L 1/0041 | . . | {Arrangements at the transmitter end} [2013-01] |
H04L 1/0042 | . . . | {Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape (H04L 1/0067 takes precedence)} [2013-01] |
H04L 1/0043 | . . . | {Realisations of complexity reduction techniques, e.g. use of look-up tables} [2013-01] |
H04L 1/0044 | . . . . | {specially adapted for power saving} [2013-01] |
H04L 1/0045 | . . | {Arrangements at the receiver end} [2013-01] |
H04L 1/0046 | . . . | {Code rate detection or code type detection (H04L 1/0038 takes precedence; detection of the data rate H04L 25/0262; for packet format H04L 1/0091)} [2013-01] |
H04L 1/0047 | . . . | {Decoding adapted to other signal detection operation (in conjunction with sequence estimation or equalization H04L 25/03286)} [2013-01] |
H04L 1/0048 | . . . . | {in conjunction with detection of multiuser or interfering signals, e.g. iteration between CDMA or MIMO detector and FEC decoder (for spatial equalizer H04L 25/03286)} [2013-01] |
H04L 1/005 | . . . . | {Iterative decoding, including iteration between signal detection and decoding operation} [2013-01] |
H04L 1/0051 | . . . . . | {Stopping criteria} [2013-01] |
H04L 1/0052 | . . . | {Realisations of complexity reduction techniques, e.g. pipelining or use of look-up tables} [2013-01] |
H04L 1/0053 | . . . . | {specially adapted for power saving} [2013-01] |
H04L 1/0054 | . . . | {Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms} [2013-01] |
H04L 1/0055 | . . . | {MAP-decoding} [2013-01] |
H04L 1/0056 | . . | {Systems characterized by the type of code used (H04L 1/08 takes precedence)} [2013-01] |
H04L 1/0057 | . . . | {Block codes (H04L 1/0061, H04L 1/0064 take precedence)} [2013-01] |
H04L 1/0059 | . . . | {Convolutional codes} [2013-01] |
H04L 1/0061 | . . . | {Error detection codes} [2013-01] |
H04L 1/0063 | . . . . | {Single parity check} [2013-01] |
H04L 1/0064 | . . . | {Concatenated codes} [2013-01] |
H04L 1/0065 | . . . . | {Serial concatenated codes} [2013-01] |
H04L 1/0066 | . . . . | {Parallel concatenated codes} [2013-01] |
H04L 1/0067 | . . . | {Rate matching (H04L 1/0013 and H04L 1/08 take precedence)} [2013-01] |
H04L 1/007 | . . . | {Unequal error protection (for format H04L 1/0078; for codes per se H03M 13/35)} [2013-01] |
H04L 1/0071 | . . . | {Use of interleaving (interleaving per se H03M 13/27)} [2013-01] |
H04L 1/0072 | . . | {Error control for data other than payload data, e.g. control data} [2013-01] |
H04L 1/0075 | . . | {Transmission of coding parameters to receiver (H04L 1/0023 takes precedence)} [2013-01] |
H04L 1/0076 | . . | {Distributed coding, e.g. network coding, involving channel coding (coding in both space and time H04L 1/0618; cooperative diversity H04B 7/022)} [2013-01] |
H04L 1/0077 | . . . | {Cooperative coding} [2013-01] |
H04L 1/0078 | . | {Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location (forward error control, e.g. FEC, CRC H04L 1/004; adaptive formatting H04L 1/0006; mappings H04L 27/00)} [2013-01] |
H04L 1/0079 | . . | {Formats for control data (H04L 1/16 takes precedence; training sequences H04L 25/00 and H04L 27/00)} [2013-01] |
H04L 1/008 | . . . | {where the control data relates to payload of a different packet} [2013-01] |
H04L 1/0081 | . . . | {Formats specially adapted to avoid errors in the feedback channel (H04L 1/1607 takes precedence)} [2013-01] |
H04L 1/0082 | . . . | {fields explicitly indicating existence of error in data being transmitted, e.g. so that downstream stations can avoid decoding erroneous packet; relays} [2013-01] |
H04L 1/0083 | . . | {Formatting with frames or packets; Protocol or part of protocol for error control} [2013-01] |
H04L 1/0084 | . . | {Formats for payload data} [2013-01] |
H04L 1/0085 | . . | {Formatting with cells} [2013-01] |
H04L 1/0086 | . . | {Unequal error protection (H04L 27/00 and H04L 1/004 take precedence for layer 1/2 aspects, e.g. bit loading)} [2013-01] |
H04L 1/0088 | . . . | {in control part} [2013-01] |
H04L 1/0089 | . . . | {in payload} [2013-01] |
H04L 1/009 | . . | {arrangements specific to transmitters} [2013-01] |
H04L 1/0091 | . . | {arrangements specific to receivers, e.g. format detection (detection of data rate H04L 25/0262; detection of coding rate H04L 1/0046)} [2013-01] |
H04L 2001/0092 | . | {Error control systems characterised by the topology of the transmission link} [2013-01] |
H04L 2001/0093 | . . | {Point-to-multipoint} [2013-01] |
H04L 2001/0094 | . . | {Bus} [2013-01] |
H04L 2001/0095 | . . | {Ring} [2013-01] |
H04L 2001/0096 | . . | {Channel splitting in point-to-point links} [2013-01] |
H04L 2001/0097 | . . | {Relays} [2013-01] |
H04L 2001/0098 | . | {Unequal error protection} [2013-01] |
H04L 1/02 | . | by diversity reception [2021-08] |
H04L 1/04 | . . | using frequency diversity [2013-01] |
H04L 1/06 | . . | using space diversity [2013-01] |
H04L 1/0606 | . . . | {Space-frequency coding} [2013-01] |
H04L 1/0612 | . . . | {Space-time modulation} [2013-01] |
H04L 1/0618 | . . . | {Space-time coding} [2013-01] |
H04L 1/0625 | . . . . | {Transmitter arrangements} [2013-01] |
H04L 1/0631 | . . . . | {Receiver arrangements} [2013-01] |
H04L 1/0637 | . . . . | {Properties of the code} [2013-01] |
H04L 1/0643 | . . . . . | {block codes} [2013-01] |
H04L 1/065 | . . . . . | {by means of convolutional encoding} [2013-01] |
H04L 1/0656 | . . . . . | {Cyclotomic systems, e.g. Bell Labs Layered Space-Time [BLAST]} [2013-01] |
H04L 1/0662 | . . . . . | {Limited orthogonality systems} [2013-01] |
H04L 1/0668 | . . . . . | {Orthogonal systems, e.g. using Alamouti codes} [2013-01] |
H04L 1/0675 | . . . . | {characterised by the signaling} [2013-01] |
H04L 1/0681 | . . . . . | {adapting space time parameters, i.e. modifying the space time matrix} [2013-01] |
H04L 1/0687 | . . . . . | {Full feedback} [2013-01] |
H04L 1/0693 | . . . . . | {Partial feedback, e.g. partial channel state information [CSI]} [2013-01] |
H04L 1/08 | . | by repeating transmission, e.g. Verdan system {(H04L 1/1858 and H04L 1/189 take precedence)} [2013-01] |
H04L 1/12 | . | by using return channel [2013-01] |
H04L 2001/125 | . . | {Arrangements for preventing errors in the return channel} [2013-01] |
H04L 1/14 | . . | in which the signals are sent back to the transmitter to be checked {; echo systems} [2021-08] |
H04L 1/16 | . . | in which the return channel carries supervisory signals, e.g. repetition request signals [2013-01] |
H04L 1/1607 | . . . | Details of the supervisory signal [2023-01] |
H04L 1/1614 | . . . . | {using bitmaps} [2023-01] |
H04L 1/1621 | . . . . | {Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers} [2023-01] |
H04L 1/1628 | . . . . | {List acknowledgements, i.e. the acknowledgement message consisting of a list of identifiers, e.g. of sequence numbers (H04L 1/1614 takes precedence)} [2023-01] |
H04L 1/1635 | . . . . | {Cumulative acknowledgement, i.e. the acknowledgement message applying to all previous messages} [2023-01] |
H04L 1/1642 | . . . . | {Formats specially adapted for sequence numbers} [2023-01] |
H04L 1/165 | . . . . . | {Variable formats} [2023-01] |
H04L 1/1657 | . . . . | {Implicit acknowledgement of correct or incorrect reception, e.g. with a moving window} [2023-01] |
H04L 1/1664 | . . . . | {the supervisory signal being transmitted together with payload signals; piggybacking} [2023-01] |
H04L 1/1671 | . . . . | {the supervisory signal being transmitted together with control information} [2023-01] |
H04L 1/1678 | . . . . . | {where the control information is for timing, e.g. time stamps} [2023-01] |
H04L 1/1685 | . . . . | {the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal} [2023-01] |
H04L 1/1692 | . . . . | {Physical properties of the supervisory signal, e.g. acknowledgement by energy bursts} [2023-01] |
H04L 1/18 | . . . | Automatic repetition systems, e.g. Van Duuren systems [2023-01] |
H04L 1/1803 | . . . . | Stop-and-wait protocols [2023-01] |
H04L 1/1806 | . . . . | Go-back-N protocols [2023-01] |
H04L 1/1809 | . . . . | Selective-repeat protocols [2023-01] |
H04L 1/1812 | . . . . | Hybrid protocols; Hybrid automatic repeat request [HARQ] [2023-01] |
H04L 1/1816 | . . . . . | {with retransmission of the same, encoded, message} [2023-01] |
H04L 1/1819 | . . . . . | {with retransmission of additional or different redundancy} [2023-01] |
H04L 1/1822 | . . . . | involving configuration of automatic repeat request [ARQ] with parallel processes [2023-01] |
H04L 1/1825 | . . . . | Adaptation of specific ARQ protocol parameters according to transmission conditions [2023-01] |
H04L 1/1829 | . . . . | Arrangements specially adapted for the receiver end [2023-01] |
H04L 1/1832 | . . . . . | {Details of sliding window management} [2023-01] |
H04L 1/1835 | . . . . . | {Buffer management} [2023-01] |
H04L 1/1838 | . . . . . . | {for semi-reliable protocols, e.g. for less sensitive applications such as streaming video (buffer level management for video bitstream receiver H04N 21/44004)} [2023-01] |
H04L 1/1841 | . . . . . . | {Resequencing} [2023-01] |
H04L 1/1845 | . . . . . . | {Combining techniques, e.g. code combining} [2023-01] |
H04L 1/1848 | . . . . . | {Time-out mechanisms} [2023-01] |
H04L 1/1851 | . . . . . . | {using multiple timers} [2023-01] |
H04L 1/1854 | . . . . . | {Scheduling and prioritising arrangements} [2023-01] |
H04L 1/1858 | . . . . . | {Transmission or retransmission of more than one copy of acknowledgement message} [2023-01] |
H04L 1/1861 | . . . . . | {Physical mapping arrangements (for ACK signaling see also H04L 5/0053)} [2023-01] |
H04L 1/1864 | . . . . . | {ARQ related signaling (H04L 1/1607 takes precedence)} [2023-01] |
H04L 1/1867 | . . . . | Arrangements specially adapted for the transmitter end [2023-01] |
H04L 1/187 | . . . . . | {Details of sliding window management} [2023-01] |
H04L 1/1874 | . . . . . | {Buffer management} [2023-01] |
H04L 1/1877 | . . . . . . | {for semi-reliable protocols, e.g. for less sensitive applications like streaming video (buffer level management for video bitstream control arrangements H04N 21/44004)} [2023-01] |
H04L 1/188 | . . . . . | {Time-out mechanisms} [2023-01] |
H04L 1/1883 | . . . . . . | {using multiple timers} [2023-01] |
H04L 1/1887 | . . . . . | {Scheduling and prioritising arrangements} [2023-01] |
H04L 1/189 | . . . . . | {Transmission or retransmission of more than one copy of a message} [2023-01] |
H04L 1/1893 | . . . . . | {Physical mapping arrangements (physical resource mapping in general H04L 5/00)} [2023-01] |
H04L 1/1896 | . . . . . | {ARQ related signaling} [2023-01] |
H04L 1/20 | . | using signal quality detector [2020-01] |
H04L 1/201 | . . | {Frame classification, e.g. bad, good or erased (frame indication per se H04L 1/0082)} [2013-01] |
H04L 1/203 | . . | {Details of error rate determination, e.g. BER, FER or WER} [2013-01] |
H04L 1/205 | . . | {jitter monitoring} [2013-01] |
H04L 1/206 | . . | {for modulated signals} [2013-01] |
H04L 1/208 | . . | {involving signal re-encoding} [2013-01] |
H04L 1/22 | . | using redundant apparatus to increase reliability [2021-08] |
H04L 1/24 | . | Testing correct operation [2013-01] |
H04L 1/241 | . . | {using pseudo-errors} [2013-01] |
H04L 1/242 | . . | {by comparing a transmitted test signal with a locally generated replica} [2013-01] |
H04L 1/243 | . . . | {at the transmitter, using a loop-back} [2013-01] |
H04L 1/244 | . . . | {test sequence generators} [2013-01] |
H04L 1/245 | . . | {by using the properties of transmission codes} [2013-01] |
H04L 1/246 | . . . | {two-level transmission codes, e.g. binary} [2013-01] |
H04L 1/247 | . . . | {three-level transmission codes, e.g. ternary} [2013-01] |
H04L 1/248 | . . | {Distortion measuring systems (measurement of non-linear distortion G01R 23/20; measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time, duration G01R 29/02)} [2013-01] |
H04L 5/00 | Arrangements affording multiple use of the transmission path [2021-01] |
H04L 5/0001 | . |
H04L 5/0003 | . . | {Two-dimensional division (time-code division H04J 11/00, H04J 13/00; for time-space division H04B 7/0413, H04B 7/0697)} [2013-01] |
H04L 5/0005 | . . . | {Time-frequency} [2013-01] |
H04L 5/0007 | . . . . | {the frequencies being orthogonal, e.g. OFDM(A), DMT} [2016-08] |
H04L 5/0008 | . . . . . | {Wavelet-division} [2013-01] |
H04L 5/001 | . . . . . | {the frequencies being arranged in component carriers} [2013-01] |
H04L 5/0012 | . . . . . | {Hopping in multicarrier systems (for frequency hopping in spread spectrum systems H04B 1/713)} [2013-01] |
H04L 5/0014 | . . | {Three-dimensional division (time-code-space division H04B 7/0413, H04B 7/0697)} [2013-01] |
H04L 5/0016 | . . . | {Time-frequency-code} [2013-01] |
H04L 5/0017 | . . . . | {in which a distinct code is applied, as a temporal sequence, to each frequency} [2013-01] |
H04L 5/0019 | . . . . | {in which one code is applied, as a temporal sequence, to all frequencies} [2013-01] |
H04L 5/0021 | . . . . | {in which codes are applied as a frequency-domain sequences, e.g. MC-CDMA} [2013-01] |
H04L 5/0023 | . . . | {Time-frequency-space} [2013-01] |
H04L 5/0025 | . . . . | {Spatial division following the spatial signature of the channel} [2013-01] |
H04L 5/0026 | . . | {Division using four or more dimensions} [2013-01] |
H04L 5/0028 | . . | {Variable division (signaling therefor H04L 5/0092)} [2013-01] |
H04L 5/003 | . | {Arrangements for allocating sub-channels of the transmission path} [2013-01] |
H04L 5/0032 | . . | {Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation} [2013-01] |
H04L 5/0033 | . . . | {each allocating device acting autonomously, i.e. without negotiation with other allocating devices} [2013-01] |
H04L 5/0035 | . . . | {Resource allocation in a cooperative multipoint environment} [2013-01] |
H04L 5/0037 | . . | {Inter-user or inter-terminal allocation} [2013-01] |
H04L 5/0039 | . . . | {Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another} [2013-01] |
H04L 5/0041 | . . . | {Frequency-non-contiguous} [2013-01] |
H04L 5/0042 | . . | {intra-user or intra-terminal allocation} [2013-01] |
H04L 5/0044 | . . | {allocation of payload} [2023-05] |
H04L 5/0046 | . . . | {Determination of how many bits are transmitted on different sub-channels} [2013-01] |
H04L 5/0048 | . . | {Allocation of pilot signals, i.e. of signals known to the receiver} [2023-05] |
H04L 5/005 | . . . | {of common pilots, i.e. pilots destined for multiple users or terminals} [2013-01] |
H04L 5/0051 | . . . | {of dedicated pilots, i.e. pilots destined for a single user or terminal} [2013-01] |
H04L 5/0053 | . . | {Allocation of signaling, i.e. of overhead other than pilot signals} [2013-01] |
H04L 5/0055 | . . . | {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L 1/1861)} [2013-01] |
H04L 5/0057 | . . . | {Physical resource allocation for CQI} [2013-01] |
H04L 5/0058 | . . | {Allocation criteria} [2013-01] |
H04L 5/006 | . . . | {Quality of the received signal, e.g. BER, SNR, water filling} [2013-01] |
H04L 5/0062 | . . . | {Avoidance of ingress interference, e.g. ham radio channels} [2013-01] |
H04L 5/0064 | . . . | {Rate requirement of the data, e.g. scalable bandwidth, data priority} [2013-01] |
H04L 5/0066 | . . . | {Requirements on out-of-channel emissions} [2013-01] |
H04L 5/0067 | . . . | {Allocation algorithms which involve graph matching} [2013-01] |
H04L 5/0069 | . . . | {Allocation based on distance or geographical location (allocation based on terminal or device properties in general, H04W 72/51)} [2023-01] |
H04L 5/0071 | . . . | {Allocation based on fairness other than the proportional kind} [2013-01] |
H04L 5/0073 | . . . | {Allocation arrangements that take into account other cell interferences (for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J 11/005)} [2013-01] |
H04L 5/0075 | . . . | {Allocation using proportional fairness} [2013-01] |
H04L 5/0076 | . . . | {Allocation utility-based} [2013-01] |
H04L 5/0078 | . . | {Timing of allocation} [2013-01] |
H04L 5/008 | . . . | {once only, on installation} [2013-01] |
H04L 5/0082 | . . . | {at predetermined intervals} [2013-01] |
H04L 5/0083 | . . . . | {symbol-by-symbol} [2013-01] |
H04L 5/0085 | . . . | {when channel conditions change} [2013-01] |
H04L 5/0087 | . . . | {when data requirements change} [2013-01] |
H04L 5/0089 | . . . . | {due to addition or removal of users or terminals} [2013-01] |
H04L 5/0091 | . | {Signaling for the administration of the divided path} [2013-01] |
H04L 5/0092 | . . | {Indication of how the channel is divided} [2013-01] |
H04L 5/0094 | . . | {Indication of how sub-channels of the path are allocated} [2013-01] |
H04L 5/0096 | . . | {Indication of changes in allocation} [2013-01] |
H04L 5/0098 | . . . | {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} [2013-01] |
H04L 5/02 | . | Channels characterised by the type of signal [2013-01] |
H04L 5/023 | . . | {Multiplexing of multicarrier modulation signals (multicarrier modulation H04L 27/2601)} [2013-01] |
H04L 5/026 | . . . | {using code division} [2013-01] |
H04L 5/04 | . . | the signals being represented by different amplitudes or polarities, e.g. quadriplex [2017-08] |
H04L 5/06 | . . | the signals being represented by different frequencies (combined with time-division multiplexing H04L 5/26) [2013-01] |
H04L 5/08 | . . . | each combination of signals in different channels being represented by a fixed frequency [2021-08] |
H04L 5/10 | . . . | with dynamo-electric generation of carriers; with mechanical filters or demodulators [2013-01] |
H04L 5/12 | . . | the signals being represented by different phase modulations of a single carrier [2013-01] |
H04L 5/14 | . | Two-way operation using the same type of signal, i.e. duplex [2021-01] |
H04L 5/1407 | . . | {Artificial lines or their setting (for line transmission systems in general H04B 3/40)} [2013-01] |
H04L 5/1415 | . . | {using control lines} [2013-01] |
H04L 5/1423 | . . | {for simultaneous baseband signals} [2013-01] |
H04L 5/143 | . . | {for modulated signals (H04L 5/1469 takes precedence)} [2013-01] |
H04L 5/1438 | . . | {Negotiation of transmission parameters prior to communication (modified according to link quality H04L 1/0001)} [2013-01] |
H04L 5/1446 | . . . | {of transmission speed} [2013-01] |
H04L 5/1453 | . . . | {of modulation type} [2013-01] |
H04L 5/1461 | . . | {Suppression of signals in the return path, i.e. bidirectional control circuits} [2013-01] |
H04L 5/1469 | . . | {using time-sharing} [2013-01] |
H04L 5/1476 | . . . | {operating bitwise} [2013-01] |
H04L 5/1484 | . . . | {operating bytewise} [2013-01] |
H04L 5/1492 | . . . . | {with time compression, e.g. operating according to the ping-pong technique} [2013-01] |
H04L 5/16 | . . | Half-duplex systems; Simplex/duplex switching; Transmission of break signals {non-automatically inverting the direction of transmission} [2021-08] |
H04L 5/18 | . . | Automatic changing of the traffic direction [2013-01] |
H04L 5/20 | . | using different combinations of lines, e.g. phantom working [2021-08] |
H04L 5/22 | . | using time-division multiplexing [2021-01] |
H04L 5/225 | . . | {combined with the use of transition coding (transition coding H04L 25/493)} [2013-01] |
H04L 5/24 | . . | with start-stop synchronous converters [2013-01] |
H04L 5/245 | . . . | {with a number of discharge tubes or semiconductor elements which successively connect the different channels to the transmission channels (see: H04L 13/00 - H04L 23/00, H03K 5/15, H03K 17/62, H04J 3/047)} [2016-05] |
H04L 5/26 | . . | combined with the use of different frequencies [2013-01] |
H04L 7/00 | Arrangements for synchronising receiver with transmitter {(synchronisation of generators of electric oscillations or pulses H03L 7/00)} [2021-08] |
H04L 7/0004 | . | {Initialisation of the receiver (H04L 7/0075 and H04L 7/10 take precedence)} [2013-01] |
H04L 7/0008 | . | {Synchronisation information channels, e.g. clock distribution lines} [2013-01] |
H04L 7/0016 | . | {correction of synchronization errors} [2013-01] |
H04L 7/002 | . . | {correction by interpolation} [2013-01] |
H04L 7/0025 | . . . | {interpolation of clock signal} [2013-01] |
H04L 7/0029 | . . . | {interpolation of received data signal} [2013-01] |
H04L 7/0033 | . . | {Correction by delay} [2013-01] |
H04L 7/0045 | . . | {Correction by a latch cascade} [2013-01] |
H04L 7/005 | . . | {Correction by an elastic buffer} [2013-01] |
H04L 7/0054 | . | {Detection of the synchronisation error by features other than the received signal transition (by means of signal transition H04L 7/033)} [2013-01] |
H04L 7/0058 | . . | {detection of error based on equalizer tap values} [2013-01] |
H04L 7/0062 | . . | {detection of error based on data decision error, e.g. Mueller type detection} [2013-01] |
H04L 7/0066 | . . | {detection of error based on transmission code rule} [2013-01] |
H04L 7/007 | . . | {detection of error based on maximum signal power, e.g. peak value, maximizing autocorrelation} [2013-01] |
H04L 7/0075 | . | {with photonic or optical means} [2013-01] |
H04L 7/0079 | . | {Receiver details} [2013-01] |
H04L 7/0083 | . . | {taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using redundant clocks} [2013-01] |
H04L 7/0087 | . . | {Preprocessing of received signal for synchronisation, e.g. by code conversion, pulse generation or edge detection} [2013-01] |
H04L 7/0091 | . | {Transmitter details} [2013-01] |
H04L 7/0095 | . | {with mechanical means} [2013-01] |
H04L 7/02 | . | Speed or phase control by the received code signals, the signals containing no special synchronisation information {(H04L 7/0075 takes precedence)} [2021-08] |
H04L 7/027 | . . | extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit [2013-01] |
H04L 7/0272 | . . . | {with squaring loop} [2013-01] |
H04L 7/0274 | . . . | {with Costas loop} [2013-01] |
H04L 7/0276 | . . . | {Self-sustaining, e.g. by tuned delay line and a feedback path to a logical gate} [2013-01] |
H04L 7/0278 | . . . | {Band edge detection} [2013-01] |
H04L 7/033 | . . | using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop [2013-01] |
H04L 7/0331 | . . . | {with a digital phase-locked loop [PLL] processing binary samples, e.g. add/subtract logic for correction of receiver clock (H04L 7/0337 takes precedence)} [2022-02] |
H04L 7/0332 | . . . | {with an integrator-detector} [2013-01] |
H04L 7/0334 | . . . | {Processing of samples having at least three levels, e.g. soft decisions} [2013-01] |
H04L 7/0335 | . . . . | {Gardner detector} [2013-01] |
H04L 7/0337 | . . . | {Selecting between two or more discretely delayed clocks or selecting between two or more discretely delayed received code signals} [2013-01] |
H04L 7/0338 | . . . . | {the correction of the phase error being performed by a feed forward loop} [2013-01] |
H04L 7/04 | . |
H04L 7/041 | . . | {using special codes as synchronising signal} [2013-01] |
H04L 7/042 | . . . | {Detectors therefor, e.g. correlators, state machines (digital correlators in general G06F 17/15)} [2013-01] |
H04L 7/043 | . . . | {Pseudo-noise [PN] codes variable during transmission (synchronisation of spread spectrum receivers H04B 1/69)} [2013-01] |
H04L 7/044 | . . . | {using a single bit, e.g. start stop bit} [2013-01] |
H04L 2007/045 | . . . | {Fill bit or bits, idle words} [2013-01] |
H04L 7/046 | . . . | {using a dotting sequence} [2013-01] |
H04L 2007/047 | . . . | {using a sine signal or unmodulated carrier} [2013-01] |
H04L 7/048 | . . | {using the properties of error detecting or error correcting codes, e.g. parity as synchronisation signal} [2013-01] |
H04L 7/06 | . . | the synchronisation signals differing from the information signals in amplitude, polarity or frequency {or length} [2021-08] |
H04L 7/08 | . . | the synchronisation signals recurring cyclically [2013-01] |
H04L 7/10 | . . | Arrangements for initial synchronisation [2018-05] |
| H04L 9/00 | {Cryptographic mechanisms or cryptographic} arrangements for secret or secure communications; Network security protocols [2022-05] NOTES
|
H04L 9/001 | . | {using chaotic signals} [2013-01] |
H04L 9/002 | . | {Countermeasures against attacks on cryptographic mechanisms (network architectures or network communication protocols for protection against malicious traffic H04L 63/1441)} [2013-01] |
H04L 9/003 | . . | {for power analysis, e.g. differential power analysis [DPA] or simple power analysis [SPA]} [2013-01] |
H04L 9/004 | . . | {for fault attacks} [2013-01] |
H04L 9/005 | . . | {for timing attacks} [2013-01] |
H04L 9/006 | . | {involving public key infrastructure [PKI] trust models (network architecture or network communication protocol for supporting authentication of entities using certificates in a packet data network H04L 63/0823)} [2013-01] |
H04L 9/007 | . . | {involving hierarchical structures} [2013-01] |
H04L 9/008 | . | {involving homomorphic encryption} [2013-01] |
H04L 9/06 | . | the encryption apparatus using shift registers or memories for block-wise {or stream} coding, e.g. DES systems {or RC4; Hash functions; Pseudorandom sequence generators} [2013-01] |
H04L 9/0618 | . . | {Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation} [2013-01] |
H04L 9/0625 | . . . | {with splitting of the data block into left and right halves, e.g. Feistel based algorithms, DES, FEAL, IDEA or KASUMI} [2013-01] |
H04L 9/0631 | . . . | {Substitution permutation network [SPN], i.e. cipher composed of a number of stages or rounds each involving linear and nonlinear transformations, e.g. AES algorithms} [2013-01] |
H04L 9/0637 | . . . | {Modes of operation, e.g. cipher block chaining [CBC], electronic codebook [ECB] or Galois/counter mode [GCM]} [2013-01] |
H04L 9/0643 | . . | {Hash functions, e.g. MD5, SHA, HMAC or f9 MAC} [2013-01] |
H04L 9/065 | . . | {Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3} [2013-01] |
H04L 9/08 | . | Key distribution {or management, e.g. generation, sharing or updating, of cryptographic keys or passwords (network architectures or network communication protocols for supporting key management in a packet data network H04L 63/06)} [2017-08] |
H04L 9/0816 | . . | {Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use} [2013-01] |
H04L 9/0819 | . . . | {Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) (network architectures or network communication protocols for key distribution in a packet data network H04L 63/062)} [2013-01] |
H04L 9/0822 | . . . . | {using key encryption key} [2013-01] |
H04L 9/0825 | . . . . | {using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates} [2013-01] |
H04L 9/0827 | . . . . | {involving distinctive intermediate devices or communication paths (network architectures or network communication protocols using different networks H04L 63/18)} [2013-01] |
H04L 9/083 | . . . . | {involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]} [2013-01] |
H04L 9/0833 | . . . . . | {involving conference or group key (network architectures or network communication protocols for key management in group communication in a packet data network H04L 63/065)} [2013-01] |
H04L 9/0838 | . . . | {Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these (network architectures or network communication protocols for key exchange in a packet data network H04L 63/061)} [2013-01] |
H04L 9/0841 | . . . . | {involving Diffie-Hellman or related key agreement protocols} [2013-01] |
H04L 9/0844 | . . . . . | {with user authentication or key authentication, e.g. ElGamal, MTI, MQV-Menezes-Qu-Vanstone protocol or Diffie-Hellman protocols using implicitly-certified keys} [2013-01] |
H04L 9/0847 | . . . . | {involving identity based encryption [IBE] schemes} [2013-01] |
H04L 9/085 | . . . | {Secret sharing or secret splitting, e.g. threshold schemes} [2013-01] |
H04L 9/0852 | . . . | {Quantum cryptography (transmission systems employing electromagnetic waves other than radio waves, e.g. light, infrared H04B 10/00; wavelength-division multiplex systems H04J 14/02; WDM arrangements H04J 14/03)} [2023-08] |
H04L 9/0861 | . . | {Generation of secret information including derivation or calculation of cryptographic keys or passwords} [2013-01] |
H04L 9/0863 | . . . | {involving passwords or one-time passwords (network architectures or network communication protocols for using one-time keys in a packet data network H04L 63/067)} [2013-01] |
H04L 9/0866 | . . . | {involving user or device identifiers, e.g. serial number, physical or biometrical information, DNA, hand-signature or measurable physical characteristics} [2013-01] |
H04L 9/0869 | . . . | {involving random numbers or seeds} [2013-01] |
H04L 9/0872 | . . . | {using geo-location information, e.g. location data, time, relative position or proximity to other entities} [2013-01] |
H04L 9/0875 | . . . | {based on channel impulse response [CIR]} [2013-01] |
H04L 9/0877 | . . . | {using additional device, e.g. trusted platform module [TPM], smartcard, USB or hardware security module [HSM]} [2013-01] |
H04L 9/088 | . . | {Usage controlling of secret information, e.g. techniques for restricting cryptographic keys to pre-authorized uses, different access levels, validity of crypto-period, different key- or password length, or different strong and weak cryptographic algorithms (network architectures or network communication protocols for using time-dependent keys in a packet data network H04L 63/068)} [2013-01] |
H04L 9/0891 | . . | {Revocation or update of secret information, e.g. encryption key update or rekeying} [2013-01] |
H04L 9/0894 | . . | {Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage} [2013-01] |
H04L 9/10 | . | with particular housing, physical features or manual controls [2019-05] |
H04L 9/12 | . | Transmitting and receiving encryption devices synchronised or initially set up in a particular manner [2013-01] |
H04L 9/14 | . | using a plurality of keys or algorithms [2022-08] |
H04L 9/30 | . | Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy [2017-08] |
H04L 9/3006 | . . | {underlying computational problems or public-key parameters} [2013-01] |
H04L 9/3013 | . . . | {involving the discrete logarithm problem, e.g. ElGamal or Diffie-Hellman systems} [2013-01] |
H04L 9/302 | . . . | {involving the integer factorization problem, e.g. RSA or quadratic sieve [QS] schemes} [2013-01] |
H04L 9/3026 | . . . | {details relating to polynomials generation, e.g. generation of irreducible polynomials} [2013-01] |
H04L 9/3033 | . . . | {details relating to pseudo-prime or prime number generation, e.g. primality test} [2013-01] |
H04L 9/304 | . . | {based on error correction codes, e.g. McEliece} [2013-01] |
H04L 9/3066 | . . | {involving algebraic varieties, e.g. elliptic or hyper-elliptic curves} [2013-01] |
H04L 9/3073 | . . . | {involving pairings, e.g. identity based encryption [IBE], bilinear mappings or bilinear pairings, e.g. Weil or Tate pairing} [2013-01] |
H04L 9/3093 | . . | {involving Lattices or polynomial equations, e.g. NTRU scheme} [2013-01] |
H04L 9/321 | . . | {involving a third party or a trusted authority} [2013-01] |
H04L 9/3213 | . . . | {using tickets or tokens, e.g. Kerberos (network architectures or network communication protocols for entities authentication using tickets in a packet data network H04L 63/0807)} [2013-01] |
H04L 9/3215 | . . | {using a plurality of channels (network architectures or network communication protocols using different networks H04L 63/18)} [2013-01] |
H04L 9/3218 | . . | {using proof of knowledge, e.g. Fiat-Shamir, GQ, Schnorr, ornon-interactive zero-knowledge proofs} [2013-01] |
H04L 9/3226 | . . | {using a predetermined code, e.g. password, passphrase or PIN (network architectures or network communication protocols for supporting authentication of entities using passwords in a packet data network H04L 63/083)} [2013-01] |
H04L 9/3228 | . . . | {One-time or temporary data, i.e. information which is sent for every authentication or authorization, e.g. one-time-password, one-time-token or one-time-key} [2013-01] |
H04L 9/3231 | . . . | {Biological data, e.g. fingerprint, voice or retina (network architectures or network communication protocols for supporting authentication of entities using biometrical features in a packet data network H04L 63/0861)} [2013-01] |
H04L 9/3234 | . . | {involving additional secure or trusted devices, e.g. TPM, smartcard, USB or software token (network architectures or network communication protocols for supporting authentication of entities using an additional device in a packet data network H04L 63/0853)} [2013-01] |
H04L 9/3236 | . . | {using cryptographic hash functions} [2013-01] |
H04L 9/3239 | . . . | {involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD} [2013-01] |
H04L 9/3242 | . . . | {involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC} [2013-01] |
H04L 9/3247 | . . | {involving digital signatures} [2013-01] |
H04L 9/3249 | . . . | {using RSA or related signature schemes, e.g. Rabin scheme} [2013-01] |
H04L 9/3252 | . . . | {using DSA or related signature schemes, e.g. elliptic based signatures, ElGamal or Schnorr schemes} [2013-01] |
H04L 9/3255 | . . . | {using group based signatures, e.g. ring or threshold signatures} [2013-01] |
H04L 9/3257 | . . . | {using blind signatures} [2013-01] |
H04L 9/3263 | . . | {involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements (network architectures or network communication protocols for supporting authentication of entities using certificates in a packet data network H04L 63/0823)} [2013-01] |
H04L 9/3265 | . . . | {using certificate chains, trees or paths; Hierarchical trust model} [2013-01] |
H04L 9/3268 | . . . | {using certificate validation, registration, distribution or revocation, e.g. certificate revocation list [CRL]} [2013-01] |
H04L 9/3271 | . . | {using challenge-response} [2013-01] |
H04L 9/3273 | . . . | {for mutual authentication (network architectures or network communication protocols for achieving mutual authentication in a packet data network H04L 63/0869)} [2013-01] |
H04L 9/3278 | . . . | {using physically unclonable functions [PUF]} [2013-01] |
H04L 9/3297 | . . | {involving time stamps, e.g. generation of time stamps} [2013-01] |
H04L 9/34 | . | Bits, or blocks of bits, of the telegraphic message being interchanged in time {(for speech signals H04K 1/06)} [2013-01] |
H04L 9/36 | . | with means for detecting characters not meant for transmission [2013-01] |
H04L 9/38 | . | Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers [2013-01] |
| H04L 9/40 | . | Network security protocols [2022-05] NOTE
WARNING
|
H04L 9/50 | . | {using hash chains, e.g. blockchains or hash trees} [2022-05] |
H04L 12/00 | Data switching networks (interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units G06F 13/00) [2013-01] |
H04L 12/02 | . | Details [2013-01] |
H04L 12/04 | . . | Switchboards [2013-01] |
H04L 12/06 | . . | Answer-back mechanisms or circuits [2013-01] |
H04L 12/08 | . . | Allotting numbers to messages; Counting characters, words or messages [2017-08] |
H04L 12/10 | . . | Current supply arrangements [2013-01] |
H04L 12/12 | . . | Arrangements for remote connection or disconnection of substations or of equipment thereof [2013-01] |
H04L 12/14 | . . | Charging {, metering or billing} arrangements {for data wireline or wireless communications} [2021-08] |
H04L 12/1403 | . . . | {Architecture for metering, charging or billing} [2013-01] |
H04L 12/141 | . . . | {Indication of costs} [2013-01] |
H04L 12/1414 | . . . . | {in real-time} [2013-01] |
H04L 12/1417 | . . . . . | {Advice of charge with threshold, e.g. user indicating maximum cost} [2013-01] |
H04L 12/1421 | . . . . | {Indication of expected costs} [2013-01] |
H04L 12/1425 | . . . | {involving dedicated fields in the data packet for billing purposes} [2013-01] |
H04L 12/1428 | . . . | {Invoice generation, e.g. customization, lay-out, database processing, algorithms for calculating the bill or formatting invoices as WWW pages (invoicing in general G06Q 30/04)} [2013-01] |
H04L 12/1432 | . . . | {Metric aspects} [2013-01] |
H04L 12/1442 | . . . | {at network operator level} [2013-01] |
H04L 12/1446 | . . . . | {inter-operator billing} [2013-01] |
H04L 12/145 | . . . . | {trading network capacity or selecting route based on tariff} [2013-01] |
H04L 12/1453 | . . . | {Methods or systems for payment or settlement of the charges for data transmission involving significant interaction with the data transmission network} [2013-01] |
H04L 12/1457 | . . . . | {using an account} [2013-01] |
H04L 12/146 | . . . . | {using digital cash} [2013-01] |
H04L 12/1464 | . . . . | {using a card, such as credit card, prepay card or SIM} [2013-01] |
H04L 12/1467 | . . . . | {involving prepayment} [2013-01] |
H04L 12/1471 | . . . . | {splitting of costs} [2013-01] |
H04L 12/1475 | . . . . . | {the splitting involving a third party} [2013-01] |
H04L 12/1478 | . . . . . | {the splitting involving only the communication parties} [2013-01] |
H04L 12/1482 | . . . . | {involving use of telephony infrastructure for billing for the transport of data, e.g. call detail record [CDR] or intelligent network infrastructure} [2013-01] |
H04L 12/1485 | . . . | {Tariff-related aspects} [2013-01] |
H04L 12/16 | . . | Arrangements for providing special services to substations [2019-05] |
H04L 12/18 | . . . | for broadcast or conference {, e.g. multicast} [2021-08] |
H04L 12/1804 | . . . . | {for stock exchange and similar applications} [2013-01] |
H04L 12/1809 | . . . . | {for auctioneering devices} [2013-01] |
H04L 12/1813 | . . . . | {for computer conferences, e.g. chat rooms (instant messaging H04L 51/04; protocols for multimedia communication H04L 65/1101; arrangements for multi-party communication H04L 65/403; telephonic conference arrangements H04M 3/56; television conference systems H04N 7/15)} [2022-05] |
H04L 12/1818 | . . . . . | {Conference organisation arrangements, e.g. handling schedules, setting up parameters needed by nodes to attend a conference, booking network resources, notifying involved parties} [2013-01] |
H04L 12/1822 | . . . . . | {Conducting the conference, e.g. admission, detection, selection or grouping of participants, correlating users to one or more conference sessions, prioritising transmission} [2013-01] |
H04L 12/1827 | . . . . . | {Network arrangements for conference optimisation or adaptation} [2013-01] |
H04L 12/1831 | . . . . . | {Tracking arrangements for later retrieval, e.g. recording contents, participants activities or behavior, network status} [2013-01] |
H04L 12/1836 | . . . . | {with heterogeneous network architecture} [2013-01] |
H04L 12/184 | . . . . . | {with heterogeneous receivers, e.g. layered multicast} [2013-01] |
H04L 12/1845 | . . . . | {broadcast or multicast in a specific location, e.g. geocast (protocols for adapting network applications to user terminal location H04L 67/52; services specially adapted for wireless communication networks making use of the location of users or terminals H04W 4/02)} [2022-05] |
H04L 12/185 | . . . . | {with management of multicast group membership} [2013-01] |
H04L 12/1854 | . . . . | {with non-centralised forwarding system, e.g. chaincast} [2013-01] |
H04L 12/1859 | . . . . | {adapted to provide push services, e.g. data channels} [2013-01] |
H04L 12/1863 | . . . . | {comprising mechanisms for improved reliability, e.g. status reports (arrangements for detecting or preventing errors by carrying supervisory signal the return channel H04L 1/16)} [2013-01] |
H04L 12/1868 | . . . . . | {Measures taken after transmission, e.g. acknowledgments} [2013-01] |
H04L 12/1872 | . . . . . . | {avoiding ACK or NACK implosion} [2013-01] |
H04L 12/1877 | . . . . . | {Measures taken prior to transmission} [2013-01] |
H04L 12/1881 | . . . . | {with schedule organisation, e.g. priority, sequence management} [2013-01] |
H04L 12/1886 | . . . . | {with traffic restrictions for efficiency improvement, e.g. involving subnets or subdomains} [2013-01] |
H04L 12/189 | . . . . | {in combination with wireless systems (selective distribution or broadcast in wireless communication networks H04W 4/06)} [2013-01] |
H04L 12/1895 | . . . . | {for short real-time information, e.g. alarms, notifications, alerts, updates} [2013-01] |
H04L 12/22 | . . | Arrangements for preventing the taking of data from a data transmission channel without authorisation (means for verifying the identity or the authority of a user of a secure or secret communication system H04L 9/32) [2013-01] |
H04L 12/28 | . | characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks] (wireless communication networks H04W {; arrangements for dividing the transmission path H04W 40/00}) [2021-08] |
H04L 12/2801 | . . | {Broadband local area networks} [2013-01] |
H04L 12/2803 | . . | {Home automation networks} [2013-01] |
H04L 12/2805 | . . . | {Home Audio Video Interoperability [HAVI] networks} [2013-01] |
H04L 12/2807 | . . . | {Exchanging configuration information on appliance services in a home automation network (arrangements for maintenance or administration involving network analysis for automatically determining the actual topology of a network H04L 41/12; hardware or software tools for network management using graphical user interfaces H04L 41/22; address allocation H04L 61/50)} [2022-05] |
H04L 12/2809 | . . . . | {indicating that an appliance service is present in a home automation network (monitoring functionality H04L 43/0817; discovery or management thereof, e.g. service location protocol [SLP] or web services, H04L 67/51)} [2022-05] |
H04L 12/281 | . . . . | {indicating a format for calling an appliance service function in a home automation network (for remote control or remote monitoring of applications H04L 67/025)} [2022-05] |
H04L 12/2812 | . . . . | {describing content present in a home automation network, e.g. audio video content (retrieval from the Internet G06F 16/95)} [2019-01] |
H04L 12/2814 | . . . . | {Exchanging control software or macros for controlling appliance services in a home automation network (arrangements for maintenance or administration involving configuration of the network and network elements H04L 41/08)} [2017-05] |
H04L 12/2816 | . . . | {Controlling appliance services of a home automation network by calling their functionalities (arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station; in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom H04Q 9/00)} [2013-01] |
H04L 12/2818 | . . . . | {from a device located outside both the home and the home network (access arrangements H04L 12/2856; for remote control or remote monitoring of applications H04L 67/025; arrangements for transmitting signals characterised by the use of a wireless eletrical link G08C 17/00; telephonic communication systems adapted for combination with remote control systems H04M 11/007)} [2022-05] |
H04L 12/282 | . . . . | {based on user interaction within the home (receiver circuitry for displaying additional information being controlled by a remote control apparatus H04N 21/42204)} [2020-08] |
H04L 12/2821 | . . . . | {Avoiding conflicts related to the use of home appliances (cryptographic protocols H04L 9/00; protocols for network security H04L 63/00)} [2022-05] |
H04L 12/2823 | . . . | {Reporting information sensed by appliance or service execution status of appliance services in a home automation network (device-related reporting H04L 43/065; arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom H04Q 9/00)} [2013-01] |
H04L 12/2825 | . . . . | {Reporting to a device located outside the home and the home network (access arrangements H04L 12/2856; for remote control or remote monitoring of applications H04L 67/025; telephonic communication systems adapted for combination with telemetering systems H04M 11/002)} [2022-05] |
H04L 12/2827 | . . . . | {Reporting to a device within the home network; wherein the reception of the information reported automatically triggers the execution of a home appliance functionality} [2013-01] |
H04L 12/283 | . . . | {Processing of data at an internetworking point of a home automation network} [2013-01] |
H04L 12/2832 | . . . . | {Interconnection of the control functionalities between home networks (single bridge functionality H04L 12/4625)} [2013-01] |
H04L 12/2834 | . . . . | {Switching of information between an external network and a home network (access arrangements H04L 12/2856)} [2013-01] |
H04L 12/2836 | . . . . | {Protocol conversion between an external network and a home network (controlling appliance services of a home automation network from a device located outside the home and the home network H04L 12/2818; protocol conversion H04L 69/08; adaptation of digital video signals for transport over a specific home network H04N 7/24)} [2022-05] |
H04L 12/2838 | . . . | {Distribution of signals within a home automation network, e.g. involving splitting/multiplexing signals to/from different paths (adaptations of television systems for transmission by electric cable for domestic distribution H04N 7/106; hybrid transport H04L 12/6418; home network arrangements specially adapted for distribution of digital video signals H04N 7/24)} [2015-07] |
H04L 2012/284 | . . . | {characterised by the type of medium used} [2013-01] |
H04L 2012/2841 | . . . . | {Wireless} [2013-01] |
H04L 2012/2843 | . . . . | {Mains power line} [2013-01] |
H04L 2012/2845 | . . . . | {Telephone line} [2013-01] |
H04L 2012/2847 | . . . | {characterised by the type of home appliance used} [2013-01] |
H04L 2012/2849 | . . . . | {Audio/video appliances} [2013-01] |
H04L 2012/285 | . . . . | {Generic home appliances, e.g. refrigerators} [2013-01] |
H04L 12/2852 | . . | {Metropolitan area networks} [2013-01] |
H04L 12/2854 | . . | {Wide area networks, e.g. public data networks} [2013-01] |
| H04L 12/2856 | . . . | {Access arrangements, e.g. Internet access (asynchronous transfer mode networks H04L 12/5601; broadband local area networks H04L 12/2801; optical access or distribution networks H04Q 11/0067; access to open networks H04L 12/5691; digital subscriber line end-user equipment and bit-level processing of data on a PSTN-based network H04M 11/00; home network gateways H04L 12/2834; wireless access networks H04W)} [2019-01] NOTES
|
H04L 12/2858 | . . . . | {Access network architectures} [2013-01] |
H04L 12/2859 | . . . . . | {Point-to-point connection between the data network and the subscribers (encapsulation H04L 12/4633; virtual LANs H04L 12/4641; routing of packets H04L 45/00)} [2017-05] |
H04L 12/2861 | . . . . . | {Point-to-multipoint connection from the data network to the subscribers} [2013-01] |
H04L 12/2863 | . . . . | {Arrangements for combining access network resources elements, e.g. channel bonding (modem pooling H04L 25/14; routing of packets H04L 45/00; multichannel or multilink protocols H04L 69/14)} [2022-05] |
H04L 12/2865 | . . . . . | {Logical combinations} [2013-01] |
H04L 12/2867 | . . . . . | {Physical combinations} [2013-01] |
H04L 12/2869 | . . . . | {Operational details of access network equipments (admission control or resource allocation in access networks H04L 12/5692)} [2013-01] |
H04L 12/287 | . . . . . | {Remote access server, e.g. BRAS} [2013-01] |
H04L 12/2872 | . . . . . . | {Termination of subscriber connections} [2013-01] |
H04L 12/2874 | . . . . . . | {Processing of data for distribution to the subscribers} [2013-01] |
H04L 12/2876 | . . . . . . | {Handling of subscriber policies (group policies management H04L 41/0893)} [2017-05] |
H04L 12/2878 | . . . . . | {Access multiplexer, e.g. DSLAM (generic distributed time multiplexers, e.g. TDM/TDMA H04J 3/1694)} [2013-01] |
H04L 12/2879 | . . . . . . | {characterised by the network type on the uplink side, i.e. towards the service provider network} [2013-01] |
H04L 12/2881 | . . . . . . . | {IP/Ethernet DSLAM} [2013-01] |
H04L 12/2883 | . . . . . . . | {ATM DSLAM} [2013-01] |
H04L 12/2885 | . . . . . . . | {Arrangements interfacing with optical systems (optical network equipment H04B 10/00; optical multiplexers H04J 14/05 and H04J 14/07)} [2023-08] |
H04L 12/2887 | . . . . . . | {characterised by the offered subscriber services} [2013-01] |
H04L 12/2889 | . . . . . . . | {Multiservice, e.g. MSAN} [2013-01] |
H04L 12/289 | . . . . . . . | {Single service} [2013-01] |
H04L 12/2892 | . . . . . . | {characterised by the access multiplexer architecture} [2013-01] |
H04L 12/2898 | . . . . . | {Subscriber equipments (DSL modems H04M 11/062; cable modems H04L 12/2801)} [2013-01] |
H04L 12/40 | . . | Bus networks [2013-01] |
| H04L 12/40006 | . . . | {Architecture of a communication node (current supply arrangements H04L 12/10; intermediate storage or scheduling H04L 49/90)} [2017-05] NOTE
|
H04L 12/40013 | . . . . | {Details regarding a bus controller} [2013-01] |
H04L 12/40019 | . . . . | {Details regarding a bus master} [2013-01] |
H04L 12/40026 | . . . . | {Details regarding a bus guardian} [2013-01] |
H04L 12/40032 | . . . . | {Details regarding a bus interface enhancer} [2013-01] |
H04L 12/40039 | . . . . | {Details regarding the setting of the power status of a node according to activity on the bus} [2013-01] |
H04L 12/40045 | . . . . | {Details regarding the feeding of energy to the node from the bus} [2013-01] |
H04L 12/40052 | . . . | {High-speed IEEE 1394 serial bus (bus transfer protocol on a daisy chain bus using an embedded synchronisation G06F 13/426)} [2013-01] |
H04L 12/40058 | . . . . | {Isochronous transmission} [2013-01] |
H04L 12/40065 | . . . . | {Bandwidth and channel allocation (home automation networks H04L 12/2803; flow control H04L 47/10)} [2017-05] |
H04L 12/40071 | . . . . | {Packet processing; Packet format (adaptation of digital video signals for transport over a specific network H04N 21/2381, H04N 21/4363, H04N 21/4381; packet switches H04L 49/00; intermediate storage or scheduling H04L 49/90)} [2017-05] |
H04L 12/40078 | . . . . | {Bus configuration (home automation networks H04L 12/2803; arrangements for maintenance or administration H04L 41/00)} [2017-05] |
H04L 12/40084 | . . . . | {Bus arbitration} [2013-01] |
H04L 12/40091 | . . . . | {Bus bridging (LAN interconnection over a bridge based backbone H04L 12/462; single bridge functionality H04L 12/462)} [2013-01] |
H04L 12/40097 | . . . . | {Interconnection with other networks (LAN interconnection over a bridge based backbone H04L 12/462; single bridge functionality H04L 12/462)} [2013-01] |
H04L 12/40104 | . . . . | {Security; Encryption; Content protection (cryptographic protocols H04L 9/00; protocols for network security H04L 63/00)} [2022-05] |
H04L 12/40117 | . . . . | {Interconnection of audio or video/imaging devices (home automation networks H04L 12/2803; bitstream network arrangements specially adapted for distribution of digital video signals H04N 7/24)} [2015-07] |
H04L 12/40123 | . . . . | {Interconnection of computers and peripherals (printer information exchange with computer G06F 3/1293)} [2013-01] |
H04L 12/4013 | . . . | {Management of data rate on the bus (systems modifying transmission characteristics according to link quality H04L 1/0001)} [2021-01] |
H04L 12/40136 | . . . . | {Nodes adapting their rate to the physical link properties (LAN switches H04L 49/351)} [2013-01] |
H04L 12/40143 | . . . | {involving priority mechanisms (hybrid switching fabrics H04L 12/6402; intermediate storage or scheduling H04L 49/90; time-division multiplex systems H04J 3/00)} [2017-05] |
H04L 12/4015 | . . . . | {by scheduling the transmission of messages at the communication node} [2013-01] |
H04L 12/40156 | . . . . | {by using dedicated slots associated with a priority level} [2013-01] |
H04L 12/40163 | . . . . | {by assigning priority to messages according to a message field} [2013-01] |
H04L 12/40169 | . . . | {Flexible bus arrangements (arrangements for maintenance or administration involving management of faults; events, alarms H04L 41/06; automatic restoration of network faults H04L 41/0654)} [2017-05] |
H04L 12/40176 | . . . . | {involving redundancy (error detection or correction of the data by redundancy in hardware using active fault-masking in interconnections G06F 11/2002; error detection or correction of the data by redundancy in hardware using active fault-masking in storage systems using spares or by reconfiguring G06F 11/2053)} [2013-01] |
| H04L 2012/40208 | . . . | {characterized by the use of a particular bus standard} [2013-01] NOTE
|
H04L 2012/40215 | . . . . | {Controller Area Network CAN} [2013-01] |
H04L 2012/40221 | . . . . | {Profibus} [2013-01] |
H04L 2012/40228 | . . . . | {Modbus} [2013-01] |
H04L 2012/40234 | . . . . | {Local Interconnect Network LIN} [2013-01] |
H04L 2012/40241 | . . . . | {Flexray} [2013-01] |
H04L 2012/40247 | . . . . | {LON} [2013-01] |
H04L 2012/40254 | . . . . | {Actuator Sensor Interface ASI} [2013-01] |
H04L 2012/4026 | . . . | {Bus for use in automation systems} [2013-01] |
H04L 2012/40267 | . . . | {Bus for use in transportation systems} [2013-01] |
H04L 2012/40273 | . . . . | {the transportation system being a vehicle} [2013-01] |
H04L 2012/4028 | . . . . | {the transportation system being an aircraft} [2013-01] |
H04L 2012/40286 | . . . . | {the transportation system being a waterborne vessel} [2013-01] |
H04L 2012/40293 | . . . . | {the transportation system being a train} [2013-01] |
H04L 12/403 | . . . | with centralised control, e.g. polling [2013-01] |
H04L 12/4035 | . . . . | {in which slots of a TDMA packet structure are assigned based on a contention resolution carried out at a master unit (TDM/TDMA multiplex systems per se H04J 3/1694; hybrid switching systems H04L 12/64)} [2013-01] |
H04L 12/407 | . . . | with decentralised control [2013-01] |
H04L 12/42 | . . | Loop networks [2013-01] |
H04L 2012/421 | . . . | {Interconnected ring systems} [2013-01] |
H04L 12/422 | . . . | {Synchronisation for ring networks (Time Division Multiplex ring networks, e.g. SDH/SONET H04J 3/085)} [2013-01] |
H04L 12/423 | . . . | with centralised control, e.g. polling [2013-01] |
H04L 12/427 | . . . | with decentralised control [2013-01] |
H04L 12/43 | . . . . | with synchronous transmission, e.g. time division multiplex [TDM], slotted rings [2013-01] |
H04L 12/433 | . . . . | with asynchronous transmission, e.g. token ring, register insertion [2013-01] |
H04L 12/437 | . . . |
H04L 12/44 | . . | Star or tree networks [2013-01] |
H04L 2012/445 | . . . | {with switching in a hub, e.g. ETHERNET switch} [2013-01] |
H04L 12/46 | . . | Interconnection of networks [2013-01] |
H04L 12/4604 | . . . | {LAN interconnection over a backbone network, e.g. Internet, Frame Relay} [2013-01] |
H04L 12/4608 | . . . . | {LAN interconnection over ATM networks} [2013-01] |
H04L 12/4612 | . . . . | {LAN interconnection over narrowband networks, e.g. N-ISDN, PSTN, X.25} [2013-01] |
H04L 12/4616 | . . . . | {LAN interconnection over a LAN backbone} [2013-01] |
H04L 12/462 | . . . . | {LAN interconnection over a bridge based backbone} [2013-01] |
H04L 12/4625 | . . . . . | {Single bridge functionality, e.g. connection of two networks over a single bridge} [2013-01] |
H04L 2012/4629 | . . . . | {using multilayer switching, e.g. layer 3 switching} [2013-01] |
H04L 12/4633 | . . . | {Interconnection of networks using encapsulation techniques, e.g. tunneling} [2013-01] |
H04L 12/4637 | . . . | {Interconnected ring systems} [2013-01] |
| H04L 12/4641 | . . . | {Virtual LANs, VLANs, e.g. virtual private networks [VPN] (LAN interconnection over a bridge based backbone H04L 12/462; encapsulation techniques H04L 12/4633; routing of packets H04L 45/00; packet switches H04L 49/00; virtual private networks for security H04L 63/0272)} [2022-05] NOTES
|
H04L 12/4645 | . . . . | {Details on frame tagging (routing of packets H04L 45/00; support for virtual LAN H04L 49/354)} [2017-05] |
H04L 12/465 | . . . . . | {wherein a single frame includes a plurality of VLAN tags} [2013-01] |
H04L 12/4654 | . . . . . . | {wherein a VLAN tag represents a customer VLAN, e.g. C-Tag} [2013-01] |
H04L 12/4658 | . . . . . . | {wherein a VLAN tag represents a service provider backbone VLAN, e.g. B-Tag, S-Tag} [2013-01] |
H04L 12/4662 | . . . . . . | {wherein a VLAN tag represents a service instance, e.g. I-SID in PBB} [2013-01] |
H04L 12/4666 | . . . . . | {Operational details on the addition or the stripping of a tag in a frame, e.g. at a provider edge node} [2013-01] |
H04L 12/467 | . . . . | {Arrangements for supporting untagged frames, e.g. port-based VLANs} [2013-01] |
H04L 12/4675 | . . . . | {Dynamic sharing of VLAN information amongst network nodes (configuration of the network or of network elements H04L 41/08)} [2017-05] |
H04L 12/50 | . | Circuit switching systems, i.e. systems in which the path is physically permanent during the communication [2014-02] |
H04L 12/52 | . . |
H04L 12/525 | . . . | {involving a stored program control} [2013-01] |
H04L 12/54 | . |
H04L 12/56 | . . | {Packet switching systems} [2013-01] |
H04L 12/5601 | . . . | {Transfer mode dependent, e.g. ATM} [2013-01] |
H04L 12/5602 | . . . . | {Bandwidth control in ATM Networks, e.g. leaky bucket} [2013-01] |
H04L 2012/5603 | . . . . | {Access techniques} [2022-01] |
H04L 2012/5604 | . . . . . | {Medium of transmission, e.g. fibre, cable, radio} [2022-01] |
H04L 2012/5605 | . . . . . . | {Fibre} [2022-01] |
H04L 2012/5606 | . . . . . . | {Metallic} [2022-01] |
H04L 2012/5607 | . . . . . . | {Radio} [2022-01] |
H04L 2012/5608 | . . . . . . | {Satellite} [2022-01] |
H04L 2012/5609 | . . . . . | {Topology} [2022-01] |
H04L 2012/561 | . . . . . . | {Star, e.g. cross-connect, concentrator, subscriber group equipment, remote electronics} [2022-01] |
H04L 2012/5612 | . . . . . . | {Ring} [2022-01] |
H04L 2012/5613 | . . . . . . | {Bus (including DQDB)} [2022-01] |
H04L 2012/5614 | . . . . | {User Network Interface} [2022-01] |
H04L 2012/5615 | . . . . . | {Network termination, e.g. NT1, NT2, PBX} [2022-01] |
H04L 2012/5616 | . . . . . | {Terminal equipment, e.g. codecs, synch.} [2022-01] |
H04L 2012/5617 | . . . . . | {Virtual LANs; Emulation of LANs} [2022-01] |
H04L 2012/5618 | . . . . . | {Bridges, gateways [GW] or interworking units [IWU]} [2022-01] |
H04L 2012/5619 | . . . . | {Network Node Interface, e.g. tandem connections, transit switching} [2022-01] |
H04L 2012/562 | . . . . . | {Routing} [2022-01] |
H04L 2012/5621 | . . . . . | {Virtual private network [VPN]; Private-network - network-interface (P-NNI)} [2022-01] |
H04L 2012/5623 | . . . . . | {Network design, dimensioning, topology or optimisation} [2022-01] |
H04L 2012/5624 | . . . . . | {Path aspects, e.g. path bundling} [2022-01] |
H04L 2012/5625 | . . . . | {Operations, administration and maintenance [OAM]} [2022-01] |
H04L 2012/5626 | . . . . . | {Network management, e.g. Intelligent nets} [2022-01] |
H04L 2012/5627 | . . . . . | {Fault tolerance and recovery} [2022-01] |
H04L 2012/5628 | . . . . | {Testing} [2022-01] |
H04L 2012/5629 | . . . . | {Admission control} [2022-01] |
H04L 2012/563 | . . . . . | {Signalling, e.g. protocols, reference model} [2022-01] |
H04L 2012/5631 | . . . . . | {Resource management and allocation} [2022-01] |
H04L 2012/5632 | . . . . . . | {Bandwidth allocation} [2022-01] |
H04L 2012/5634 | . . . . . . . | {In-call negotiation} [2022-01] |
H04L 2012/5635 | . . . . . . . | {Backpressure, e.g. for ABR} [2022-01] |
H04L 2012/5636 | . . . . . . | {Monitoring or policing, e.g. compliance with allocated rate, corrective actions} [2022-01] |
H04L 2012/5637 | . . . . . . . | {Leaky Buckets} [2022-01] |
H04L 2012/5638 | . . . . | {Services, e.g. multimedia, GOS, QOS} [2022-01] |
H04L 2012/5639 | . . . . . | {Tariffs or charging} [2022-01] |
H04L 2012/564 | . . . . . | {Connection-oriented} [2022-01] |
H04L 2012/5641 | . . . . . . | {Unicast/point-to-point} [2022-01] |
H04L 2012/5642 | . . . . . . | {Multicast/broadcast/point-multipoint, e.g. VOD} [2022-01] |
H04L 2012/5643 | . . . . . . | {Concast/multipoint-to-point} [2022-01] |
H04L 2012/5645 | . . . . . | {Connectionless} [2022-01] |
H04L 2012/5646 | . . . . . | {Cell characteristics, e.g. loss, delay, jitter, sequence integrity} [2022-01] |
H04L 2012/5647 | . . . . . . | {Cell loss} [2022-01] |
H04L 2012/5648 | . . . . . . . | {Packet discarding, e.g. EPD, PTD} [2022-01] |
H04L 2012/5649 | . . . . . . | {Cell delay or jitter} [2022-01] |
H04L 2012/565 | . . . . . . | {Sequence integrity} [2022-01] |
H04L 2012/5651 | . . . . . . | {Priority, marking, classes} [2022-01] |
H04L 2012/5652 | . . . . . . | {Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly} [2022-01] |
H04L 2012/5653 | . . . . . . . | {using the ATM adaptation layer [AAL]} [2022-01] |
H04L 2012/5654 | . . . . . . . . | {using the AAL1} [2022-01] |
H04L 2012/5656 | . . . . . . . . | {using the AAL2} [2022-01] |
H04L 2012/5657 | . . . . . . . . | {using the AAL3/4} [2022-01] |
H04L 2012/5658 | . . . . . . . . | {using the AAL5} [2022-01] |
H04L 2012/5659 | . . . . . . . . | {usint the AALX} [2022-01] |
H04L 2012/566 | . . . . . . . | {using the ATM layer} [2022-01] |
H04L 2012/5661 | . . . . . . . . | {Minicells} [2022-01] |
H04L 2012/5662 | . . . . . . . . | {Macrocells or frames} [2022-01] |
H04L 2012/5663 | . . . . . | {Support of N-ISDN} [2022-01] |
H04L 2012/5664 | . . . . . | {Support of Video, e.g. MPEG} [2022-01] |
H04L 2012/5665 | . . . . . | {Interaction of ATM with other protocols} [2022-01] |
H04L 2012/5667 | . . . . . . | {IP over ATM} [2022-01] |
H04L 2012/5668 | . . . . . . | {Next hop resolution protocol [NHRP]} [2022-01] |
H04L 2012/5669 | . . . . . . | {Multiprotocol over ATM [MPOA]} [2022-01] |
H04L 2012/567 | . . . . . . | {Frame Relay over ATM} [2022-01] |
H04L 2012/5671 | . . . . . | {Support of voice} [2022-01] |
H04L 2012/5672 | . . . . | {Multiplexing, e.g. coding, scrambling} [2022-01] |
H04L 2012/5673 | . . . . . | {Coding or scrambling} [2022-01] |
H04L 2012/5674 | . . . . . | {Synchronisation, timing recovery or alignment} [2022-01] |
H04L 2012/5675 | . . . . . | {Timeslot assignment, e.g. TDMA} [2022-01] |
H04L 2012/5676 | . . . . . | {Code Division Multiple Access [CDMA]} [2022-01] |
H04L 2012/5678 | . . . . | {Traffic aspects, e.g. arbitration, load balancing, smoothing, buffer management} [2022-01] |
H04L 2012/5679 | . . . . . | {Arbitration or scheduling} [2022-01] |
H04L 2012/568 | . . . . . | {Load balancing, smoothing or shaping} [2022-01] |
H04L 2012/5681 | . . . . . | {Buffer or queue management} [2022-01] |
H04L 2012/5682 | . . . . . . | {Threshold; Watermark} [2022-01] |
H04L 2012/5683 | . . . . . . | {for avoiding head of line blocking} [2022-01] |
H04L 2012/5684 | . . . . . | {Characteristics of traffic flows} [2022-01] |
H04L 2012/5685 | . . . . | {Addressing issues} [2022-01] |
H04L 2012/5686 | . . . . | {Use of neural networks} [2022-01] |
H04L 2012/5687 | . . . . | {Security aspects} [2022-01] |
H04L 12/5691 | . . . | {Access to open networks; Ingress point selection, e.g. ISP selection} [2013-01] |
H04L 12/5692 | . . . . | {Selection among different networks} [2013-01] |
H04L 12/64 | . | Hybrid switching systems [2013-01] |
H04L 12/6402 | . . | {Hybrid switching fabrics} [2013-01] |
H04L 2012/6405 | . . . | {Space} [2013-01] |
H04L 2012/6408 | . . . | {Shared Medium, e.g. memory, bus, ring} [2013-01] |
H04L 2012/641 | . . . | {Time switching} [2013-01] |
H04L 2012/6413 | . . . | {Switch peripheries} [2013-01] |
H04L 2012/6416 | . . . | {Switch multicast} [2013-01] |
H04L 12/6418 | . . | {Hybrid transport} [2013-01] |
H04L 2012/6421 | . . . | {Medium of transmission, e.g. fibre, cable, radio, satellite} [2013-01] |
H04L 2012/6424 | . . . | {Access arrangements} [2013-01] |
H04L 2012/6427 | . . . . | {Subscriber Access Module; Concentrator; Group equipment} [2013-01] |
H04L 2012/6429 | . . . | {Terminal adapters} [2013-01] |
H04L 2012/6432 | . . . | {Topology} [2013-01] |
H04L 2012/6435 | . . . . | {Bus} [2013-01] |
H04L 2012/6437 | . . . . | {Ring} [2013-01] |
H04L 2012/644 | . . . . | {Star} [2013-01] |
H04L 2012/6443 | . . . | {Network Node Interface, e.g. Routing, Path finding} [2013-01] |
H04L 2012/6445 | . . . | {Admission control} [2013-01] |
H04L 2012/6448 | . . . . | {Medium Access Control [MAC]} [2013-01] |
H04L 2012/6451 | . . . . . | {Deterministic, e.g. Token, DQDB} [2013-01] |
H04L 2012/6454 | . . . . . | {Random, e.g. Ethernet} [2013-01] |
H04L 2012/6456 | . . . . | {Channel and bandwidth allocation} [2013-01] |
H04L 2012/6459 | . . . . | {Multiplexing, e.g. TDMA, CDMA} [2013-01] |
H04L 2012/6462 | . . . . | {Movable boundaries in packets or frames} [2013-01] |
H04L 2012/6464 | . . . | {Priority} [2013-01] |
H04L 2012/6467 | . . . | {Information loss recovery, e.g. error correction, prediction} [2013-01] |
H04L 2012/647 | . . . | {Frame Relay, X.25} [2013-01] |
H04L 2012/6472 | . . . | {Internet} [2013-01] |
H04L 2012/6475 | . . . | {N-ISDN, Public Switched Telephone Network [PSTN]} [2013-01] |
H04L 2012/6478 | . . . | {Digital subscriber line, e.g. DSL, ADSL, HDSL, XDSL, VDSL} [2013-01] |
H04L 2012/6481 | . . . | {Speech, voice} [2013-01] |
H04L 2012/6483 | . . . | {Video, e.g. MPEG} [2013-01] |
H04L 2012/6486 | . . . | {Signalling Protocols} [2013-01] |
H04L 2012/6489 | . . . | {Buffer Management, Threshold setting, Scheduling, Shaping} [2013-01] |
H04L 2012/6491 | . . . | {Echo cancellation} [2013-01] |
H04L 2012/6494 | . . . | {Silence suppression} [2013-01] |
H04L 2012/6497 | . . . | {Feedback to the source} [2013-01] |
H04L 12/66 | . | Arrangements for connecting between networks having differing types of switching systems, e.g. gateways [2013-01] |
H04L 13/00 | Details of the apparatus or circuits covered by groups H04L 15/00 or H04L 17/00 [2013-01] |
H04L 13/02 | . | Details not particular to receiver or transmitter [2013-01] |
H04L 13/04 | . . | Driving mechanisms; Clutches [2021-08] |
H04L 13/06 | . . | Tape or page guiding or feeding devices [2013-01] |
H04L 13/08 | . . | Intermediate storage means [2013-01] |
H04L 13/10 | . . | Distributors [2013-01] |
H04L 13/16 | . | of transmitters, e.g. code-bars, code-discs [2013-01] |
H04L 13/18 | . | of receivers [2013-01] |
H04L 13/182 | . . | {Printing mechanisms} [2013-01] |
H04L 13/184 | . . . | {Photographic printing and recording} [2013-01] |
H04L 13/186 | . . | {Page printing; tabulating} [2013-01] |
H04L 13/188 | . . | {Projection of the printed matter} [2013-01] |
H04L 15/00 | Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code (teaching apparatus therefor G09B; telegraph tapping keys H01H 21/86) [2021-08] |
H04L 15/03 | . | Keys structurally combined with sound generators [2013-01] |
H04L 15/04 | . | Apparatus or circuits at the transmitting end [2013-01] |
H04L 15/06 | . . | with a restricted number of keys, e.g. separate key for each type of code element [2013-01] |
H04L 15/08 | . . . | with a single key which transmits dots in one position and dashes in a second position [2013-01] |
H04L 15/10 | . . . | combined with perforating apparatus [2013-01] |
H04L 15/12 | . . | with keyboard co-operating with code-bars [2013-01] |
H04L 15/14 | . . . | combined with perforating apparatus [2013-01] |
H04L 15/16 | . . | with keyboard co-operating with code discs [2013-01] |
H04L 15/18 | . . | Automatic transmitters, e.g. controlled by perforated tape [2013-01] |
H04L 15/20 | . . . | with optical sensing means [2013-01] |
H04L 15/22 | . . | Apparatus or circuits for sending one or a restricted number of signals, e.g. distress signals [2013-01] |
H04L 15/24 | . | Apparatus or circuits at the receiving end [2013-01] |
H04L 15/26 | . . | operating only on reception of predetermined code signals, e.g. distress signals, party-line call signals [2017-08] |
H04L 15/28 | . . | Code reproducing apparatus [2013-01] |
H04L 15/285 | . . . | {Telegraph sounders; Apparatus for acoustic reception} [2013-01] |
H04L 15/30 | . . . | Writing recorders [2013-01] |
H04L 15/32 | . . . | Perforating recorders [2013-01] |
H04L 15/34 | . . | Apparatus for recording received coded signals after translation, e.g. as type-characters [2013-01] |
H04L 17/00 | Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code [2021-08] |
H04L 17/02 | . | Apparatus or circuits at the transmitting end [2013-01] |
H04L 17/04 | . . | with keyboard co-operating with code-bars [2013-01] |
H04L 17/06 | . . . | Contact operating means [2013-01] |
H04L 17/08 | . . . | combined with perforating apparatus [2013-01] |
H04L 17/10 | . . | with keyboard co-operating with code-discs [2013-01] |
H04L 17/12 | . . | Automatic transmitters, e.g. controlled by perforated tape [2013-01] |
H04L 17/14 | . . . | with optical sensing means [2013-01] |
H04L 17/16 | . | Apparatus or circuits at the receiving end [2013-01] |
H04L 17/18 | . . | Code selection mechanisms [2013-01] |
H04L 17/20 | . . | using perforating recorders [2013-01] |
H04L 17/22 | . . | using mechanical translation and type-bar printing [2013-01] |
H04L 17/24 | . . | using mechanical translation and type-head printing, e.g. type-wheel, type-cylinder [2013-01] |
H04L 17/26 | . . | using aggregate motion translation [2013-01] |
H04L 17/28 | . . | using pneumatic or hydraulic translation [2013-01] |
H04L 17/30 | . . | using electric or electronic translation [2013-01] |
H04L 19/00 | Apparatus or local circuits for step-by-step systems [2013-01] |
H04L 21/00 | Apparatus or local circuits for mosaic printer telegraph systems [2013-01] |
H04L 21/02 | . | at the transmitting end [2013-01] |
H04L 21/04 | . | at the receiving end [2013-01] |
H04L 23/00 | Apparatus or local circuits for systems other than those covered by groups H04L 15/00 - H04L 21/00 [2016-05] |
H04L 25/00 | Baseband systems [2013-01] |
H04L 25/02 | . | Details {; arrangements for supplying electrical power along data transmission lines (systems for transmitting signals via power distribution lines H04B 3/54)} [2022-05] |
H04L 25/0202 | . . | {Channel estimation} [2013-01] |
H04L 25/0204 | . . . | {of multiple channels} [2013-01] |
H04L 25/021 | . . . | {Estimation of channel covariance} [2013-01] |
H04L 25/0212 | . . . | {of impulse response} [2013-01] |
H04L 25/0214 | . . . . | {of a single coefficient} [2013-01] |
H04L 25/0216 | . . . . | {with estimation of channel length} [2013-01] |
H04L 25/0218 | . . . . | {with detection of nulls} [2013-01] |
H04L 25/022 | . . . | {of frequency response} [2013-01] |
H04L 25/0222 | . . . | {Estimation of channel variability, e.g. coherence bandwidth, coherence time, fading frequency} [2013-01] |
H04L 25/0224 | . . . | {using sounding signals} [2013-01] |
H04L 25/0226 | . . . . | {sounding signals per se} [2013-01] |
H04L 25/0228 | . . . . | {with direct estimation from sounding signals} [2013-01] |
H04L 25/0238 | . . . | {using blind estimation} [2013-01] |
H04L 25/024 | . . . | {channel estimation algorithms} [2013-01] |
H04L 25/0242 | . . . . | {using matrix methods} [2013-01] |
H04L 25/0244 | . . . . . | {with inversion} [2013-01] |
H04L 25/0246 | . . . . . | {with factorisation} [2013-01] |
H04L 25/0248 | . . . . . | {Eigen-space methods} [2013-01] |
H04L 25/025 | . . . . | {using least-mean-square [LMS] method} [2013-01] |
H04L 25/0252 | . . . . | {using third or higher order statistics} [2013-01] |
H04L 25/0254 | . . . . | {using neural network algorithms} [2013-01] |
H04L 25/0256 | . . . . | {Channel estimation using minimum mean square error criteria} [2013-01] |
H04L 25/0258 | . . . . | {Channel estimation using zero-forcing criteria} [2013-01] |
H04L 25/026 | . . | {Arrangements for coupling transmitters, receivers or transceivers to transmission lines; Line drivers (duplexing arrangements H04L 5/14)} [2013-01] |
H04L 25/0262 | . . | {Arrangements for detecting the data rate of an incoming signal} [2013-01] |
H04L 25/0264 | . . | {Arrangements for coupling to transmission lines (duplexing arrangements H04L 5/14; line equalisers, line build-out devices H04L 25/03878)} [2015-11] |
H04L 25/0266 | . . . | {Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling} [2013-01] |
H04L 25/0268 | . . . . | {with modulation and subsequent demodulation} [2013-01] |
H04L 25/027 | . . . . | {specifically for telegraph signals (induction coil interrupters H01H 51/34; dynamo-electric generators H02K)} [2023-08] |
H04L 25/0272 | . . . | {Arrangements for coupling to multiple lines, e.g. for differential transmission} [2013-01] |
H04L 25/0274 | . . . . | {Arrangements for ensuring balanced coupling} [2013-01] |
H04L 25/0276 | . . . . | {Arrangements for coupling common mode signals} [2013-01] |
H04L 25/0278 | . . . | {Arrangements for impedance matching} [2013-01] |
H04L 25/028 | . . . | {Arrangements specific to the transmitter end} [2013-01] |
H04L 25/0282 | . . . . | {Provision for current-mode coupling} [2013-01] |
H04L 25/0284 | . . . . | {Arrangements to ensure DC-balance} [2013-01] |
H04L 25/0286 | . . . . | {Provision of wave shaping within the driver (wave shaping per se H04L 25/03834)} [2013-01] |
H04L 25/0288 | . . . . . | {the shape being matched to the transmission line (pre-equalisation per se H04L 25/03343)} [2013-01] |
H04L 25/029 | . . . . | {Provision of high-impedance states} [2013-01] |
H04L 25/0292 | . . . | {Arrangements specific to the receiver end} [2013-01] |
H04L 25/0294 | . . . . | {Provision for current-mode coupling} [2013-01] |
H04L 25/0296 | . . . . | {Arrangements to ensure DC-balance} [2013-01] |
H04L 25/0298 | . . . | {Arrangement for terminating transmission lines} [2013-01] |
H04L 25/03 | . . | Shaping networks in transmitter or receiver, e.g. adaptive shaping networks [2022-05] |
H04L 25/03006 | . . . | {Arrangements for removing intersymbol interference} [2013-01] |
H04L 25/03012 | . . . . | {operating in the time domain (H04L 25/03165, H04L 25/03178 take precedence)} [2013-01] |
H04L 25/03019 | . . . . . | {adaptive, i.e. capable of adjustment during data reception} [2013-01] |
H04L 25/03025 | . . . . . . | {using a two-tap delay line} [2013-01] |
H04L 25/03031 | . . . . . . | {using only passive components (H04L 25/03025 takes precedence)} [2013-01] |
H04L 25/03038 | . . . . . . | {with a non-recursive structure (H04L 25/03031 takes precedence)} [2013-01] |
H04L 25/03044 | . . . . . . . | {using fractionally spaced delay lines or combinations of fractionally integrally spaced taps} [2013-01] |
H04L 25/0305 | . . . . . . . | {using blind adaptation} [2013-01] |
H04L 25/03057 | . . . . . . | {with a recursive structure (H04L 25/03031 takes precedence)} [2013-01] |
H04L 25/03063 | . . . . . . . | {using fractionally spaced delay lines or combinations of fractionally and integrally spaced taps} [2013-01] |
H04L 25/0307 | . . . . . . . | {using blind adaptation} [2013-01] |
H04L 25/03076 | . . . . . . . | {not using decision feedback} [2013-01] |
H04L 25/03082 | . . . . . . | {Theoretical aspects of adaptive time domain methods} [2013-01] |
H04L 25/03089 | . . . . . . . | {Theory of blind algorithms, recursive or not} [2013-01] |
H04L 25/03095 | . . . . . . . | {Theory of fractional equalisers, recursive or not} [2013-01] |
H04L 25/03101 | . . . . . . . | {Theory of the Kalman algorithm} [2013-01] |
H04L 25/03108 | . . . . . . . | {Theory of recursive equalisers, other than Kalman} [2013-01] |
H04L 25/03114 | . . . . . | {non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals} [2013-01] |
H04L 25/03121 | . . . . . . | {using a two-tap delay line} [2013-01] |
H04L 25/03127 | . . . . . . | {using only passive components (H04L 25/03121 takes precedence)} [2013-01] |
H04L 25/03133 | . . . . . . | {with a non-recursive structure (H04L 25/03127 takes precedence)} [2013-01] |
H04L 25/0314 | . . . . . . . | {using fractionally spaced delay lines or combinations of fractionally integrally spaced taps} [2013-01] |
H04L 25/03146 | . . . . . . | {with a recursive structure (H04L 25/03127 takes precedence)} [2013-01] |
H04L 25/03152 | . . . . . . | {Theoretical aspects of non-adaptive time domain methods} [2013-01] |
H04L 25/03159 | . . . . | {operating in the frequency domain (H04L 25/03165, H04L 25/03178 take precedence)} [2013-01] |
H04L 25/03165 | . . . . | {using neural networks} [2013-01] |
| H04L 25/03171 | . . . . | {Arrangements involving maximum a posteriori probability [MAP] detection} [2013-01] NOTE
|
H04L 25/03178 | . . . . | {Arrangements involving sequence estimation techniques} [2013-01] |
H04L 25/03184 | . . . . . | {Details concerning the metric} [2013-01] |
H04L 25/03191 | . . . . . . | {in which the receiver makes a selection between different metrics} [2013-01] |
H04L 25/03197 | . . . . . . | {methods of calculation involving metrics} [2013-01] |
H04L 25/03203 | . . . . . | {Trellis search techniques} [2013-01] |
H04L 25/0321 | . . . . . . | {Sorting arrangements therefor} [2013-01] |
H04L 25/03216 | . . . . . . | {using the M-algorithm} [2013-01] |
H04L 25/03222 | . . . . . . | {using the T-algorithm} [2013-01] |
H04L 25/03229 | . . . . . . | {with state-reduction using grouping of states} [2013-01] |
H04L 25/03235 | . . . . . . | {with state-reduction using feedback filtering} [2013-01] |
H04L 25/03242 | . . . . . . | {Methods involving sphere decoding} [2013-01] |
| H04L 25/03248 | . . . . . | {Arrangements for operating in conjunction with other apparatus} [2013-01] NOTE
|
H04L 25/03254 | . . . . . . | {Operation with other circuitry for removing intersymbol interference} [2013-01] |
H04L 25/03261 | . . . . . . . | {with impulse-response shortening filters} [2013-01] |
H04L 25/03267 | . . . . . . . | {with decision feedback equalisers} [2013-01] |
H04L 25/03273 | . . . . . . | {with carrier recovery circuitry} [2013-01] |
H04L 25/0328 | . . . . . . | {with interference cancellation circuitry (adaptations for interference cancellation within a sequence estimator H04L 25/03305; interference related aspects of direct sequence spread spectrum H04B 1/7097; interference related aspects of frequency hopping spread spectrum H04B 1/715; see also H04B 1/10)} [2013-01] |
H04L 25/03286 | . . . . . . | {with channel-decoding circuitry} [2013-01] |
H04L 25/03292 | . . . . . . | {with channel estimation circuitry} [2013-01] |
H04L 25/03299 | . . . . . . | {with noise-whitening circuitry} [2013-01] |
H04L 25/03305 | . . . . . | {Joint sequence estimation and interference removal (joint detection of several desired signals H04L 25/03331)} [2013-01] |
H04L 25/03312 | . . . . . | {Arrangements specific to the provision of output signals} [2013-01] |
H04L 25/03318 | . . . . . . | {Provision of soft decisions} [2013-01] |
H04L 25/03324 | . . . . . . | {Provision of tentative decisions} [2013-01] |
H04L 25/03331 | . . . . . | {Arrangements for the joint estimation of multiple sequences} [2013-01] |
H04L 25/03337 | . . . . . | {Arrangements involving per-survivor processing} [2013-01] |
H04L 25/03343 | . . . . | {Arrangements at the transmitter end} [2013-01] |
H04L 2025/0335 | . . . . | {characterised by the type of transmission} [2013-01] |
H04L 2025/03356 | . . . . . | {Baseband transmission} [2013-01] |
H04L 2025/03363 | . . . . . . | {Multilevel (H04L 2025/03369 takes precedence)} [2013-01] |
H04L 2025/03369 | . . . . . . | {Partial response} [2013-01] |
H04L 2025/03375 | . . . . . | {Passband transmission} [2013-01] |
H04L 2025/03382 | . . . . . . | {Single of vestigal sideband} [2013-01] |
H04L 2025/03388 | . . . . . . | {ASK} [2013-01] |
H04L 2025/03394 | . . . . . . | {FSK} [2013-01] |
H04L 2025/03401 | . . . . . . | {PSK} [2013-01] |
H04L 2025/03407 | . . . . . . . | {Continuous phase} [2013-01] |
H04L 2025/03414 | . . . . . . | {Multicarrier} [2013-01] |
H04L 2025/0342 | . . . . . . | {QAM} [2013-01] |
H04L 2025/03426 | . . . . . | {transmission using multiple-input and multiple-output channels} [2013-01] |
H04L 2025/03433 | . . . . | {characterised by equaliser structure} [2013-01] |
H04L 2025/03439 | . . . . . | {Fixed structures} [2013-01] |
H04L 2025/03445 | . . . . . . | {Time domain} [2013-01] |
H04L 2025/03452 | . . . . . . . | {Systolic arrays} [2013-01] |
H04L 2025/03458 | . . . . . . . | {Lattice} [2013-01] |
H04L 2025/03464 | . . . . . . . | {Neural networks} [2013-01] |
H04L 2025/03471 | . . . . . . . | {Tapped delay lines (H04L 2025/03464 takes precedence)} [2015-07] |
H04L 2025/03477 | . . . . . . . . | {not time-recursive} [2013-01] |
H04L 2025/03484 | . . . . . . . . | {time-recursive} [2013-01] |
H04L 2025/0349 | . . . . . . . . . | {as a feedback filter} [2013-01] |
H04L 2025/03496 | . . . . . . . . . | {as a prediction filter} [2013-01] |
H04L 2025/03503 | . . . . . . . . . | {as a combination of feedback and prediction filters} [2013-01] |
H04L 2025/03509 | . . . . . . . . | {fractionally spaced (H04L 2025/03515 takes precedence)} [2013-01] |
H04L 2025/03515 | . . . . . . . . | {irregularly spaced} [2013-01] |
H04L 2025/03522 | . . . . . . | {Frequency domain} [2013-01] |
H04L 2025/03528 | . . . . . . | {Other transform domain} [2013-01] |
H04L 2025/03535 | . . . . . | {Variable structures} [2013-01] |
H04L 2025/03541 | . . . . . . | {Switching between domains, e.g. between time and frequency} [2013-01] |
H04L 2025/03547 | . . . . . . | {Switching between time domain structures} [2013-01] |
H04L 2025/03554 | . . . . . . . | {between neural networks and tapped delay lines} [2013-01] |
H04L 2025/0356 | . . . . . . . | {Switching the time direction of equalisation} [2013-01] |
H04L 2025/03566 | . . . . . . . | {between different tapped delay line structures} [2013-01] |
H04L 2025/03573 | . . . . . . . . | {between recursive and non-recursive} [2013-01] |
H04L 2025/03579 | . . . . . . . . | {Modifying the tap spacing} [2013-01] |
H04L 2025/03585 | . . . . . . . . | {Modifying the length} [2013-01] |
H04L 2025/03592 | . . . . | {Adaptation methods} [2013-01] |
H04L 2025/03598 | . . . . . | {Algorithms} [2013-01] |
H04L 2025/03605 | . . . . . . | {Block algorithms} [2013-01] |
H04L 2025/03611 | . . . . . . | {Iterative algorithms} [2013-01] |
H04L 2025/03617 | . . . . . . . | {Time recursive algorithms (H04L 2025/03643 takes precedence)} [2015-07] |
H04L 2025/03624 | . . . . . . . . | {Zero-forcing} [2013-01] |
H04L 2025/0363 | . . . . . . . . | {Feature restoration, e.g. constant modulus} [2013-01] |
H04L 2025/03636 | . . . . . . . | {Algorithms using least mean square [LMS]} [2013-01] |
H04L 2025/03643 | . . . . . . . | {Order recursive} [2013-01] |
H04L 2025/03649 | . . . . . . . | {Algorithms using recursive least square [RLS]} [2013-01] |
H04L 2025/03656 | . . . . . . . | {Initialisation} [2013-01] |
H04L 2025/03662 | . . . . . . . . | {to a fixed value} [2013-01] |
H04L 2025/03668 | . . . . . . . . | {to the value at the end of a previous adaptation period} [2013-01] |
H04L 2025/03675 | . . . . . . | {Blind algorithms using gradient methods} [2013-01] |
H04L 2025/03681 | . . . . . . | {Control of adaptation} [2013-01] |
H04L 2025/03687 | . . . . . . . | {of step size} [2013-01] |
H04L 2025/03694 | . . . . . . . . | {Stop and go} [2013-01] |
H04L 2025/037 | . . . . . . . | {Detection of convergence state} [2013-01] |
H04L 2025/03707 | . . . . . . . | {Detection or avoidance of local extrema} [2013-01] |
H04L 2025/03713 | . . . . . . | {Subspace algorithms} [2013-01] |
H04L 2025/03719 | . . . . . . | {Super-exponential} [2013-01] |
H04L 2025/03726 | . . . . . | {Switching between algorithms} [2013-01] |
H04L 2025/03732 | . . . . . . | {according to the convergence state} [2013-01] |
H04L 2025/03738 | . . . . . | {Manual adaptation} [2013-01] |
H04L 2025/03745 | . . . . . | {Timing of adaptation} [2013-01] |
H04L 2025/03751 | . . . . . . | {only once, at installation (H04L 2025/03738 takes precedence)} [2015-07] |
H04L 2025/03757 | . . . . . . | {only on the request of a user} [2013-01] |
H04L 2025/03764 | . . . . . . | {only during predefined intervals} [2013-01] |
H04L 2025/0377 | . . . . . . . | {during the reception of training signals} [2013-01] |
H04L 2025/03777 | . . . . | {characterised by the signalling} [2013-01] |
H04L 2025/03783 | . . . . . | {Details of reference signals} [2013-01] |
H04L 2025/03789 | . . . . . . | {Codes therefore} [2013-01] |
H04L 2025/03796 | . . . . . . | {Location of reference signals} [2013-01] |
H04L 2025/03802 | . . . . . | {Signalling on the reverse channel} [2013-01] |
H04L 25/03821 | . . . . | {Inter-carrier interference cancellation [ICI]} [2013-01] |
H04L 25/03828 | . . . | {Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties (partial response systems H04L 25/497)} [2013-01] |
H04L 25/03834 | . . . . | {using pulse shaping} [2013-01] |
H04L 25/0384 | . . . . . | {Design of pulse shapes (pulse shape for impulse radio H04B 1/7172)} [2013-01] |
H04L 25/03847 | . . . . . | {Shaping by selective switching of amplifying elements} [2013-01] |
H04L 25/03853 | . . . . . | {Shaping by digital methods other than look up tables or up/down converters} [2013-01] |
H04L 25/03859 | . . . . . | {shaping using look up tables for partial waveforms} [2013-01] |
H04L 25/03866 | . . . . | {using scrambling} [2013-01] |
H04L 25/03872 | . . . . . | {Parallel scrambling or descrambling} [2013-01] |
H04L 25/03878 | . . . | {Line equalisers; line build-out devices} [2013-01] |
H04L 25/03885 | . . . . | {adaptive} [2013-01] |
H04L 25/03891 | . . . | {Spatial equalizers (MIMO diversity systems H04B 7/0413)} [2013-01] |
H04L 25/03898 | . . . . | {codebook-based design (selection of codebook or precoding matrix for MIMO diversity systems H04B 7/0456)} [2013-01] |
H04L 25/03904 | . . . . . | {cooperative design, e.g. exchanging of codebook information between base stations} [2013-01] |
H04L 25/0391 | . . . . . | {construction details of matrices} [2013-01] |
H04L 25/03917 | . . . . . . | {according to the size of the codebook} [2013-01] |
H04L 25/03923 | . . . . . . | {according to the rank} [2013-01] |
H04L 25/03929 | . . . . . | {with layer mapping, e.g. codeword-to layer design (for space-time coding H04L 1/0618)} [2013-01] |
H04L 25/03936 | . . . . . | {multi-resolution codebooks} [2013-01] |
H04L 25/03942 | . . . . . | {switching between different codebooks} [2013-01] |
H04L 25/03949 | . . . . | {equalizer selection or adaptation based on feedback (multiple signaling inclusive of a precoding command for adapting the transmitter H04L 1/0031; feedback for transmit diversity systems H04B 7/0619; selection of codebook or precoding matrix for MIMO diversity systems H04B 7/0456)} [2013-01] |
H04L 25/03955 | . . . . . | {in combination with downlink estimations, e.g. downlink path losses} [2013-01] |
H04L 25/03961 | . . . . | {design criteria} [2013-01] |
H04L 25/03968 | . . . . . | {mean-square error [MSE]} [2013-01] |
H04L 25/03974 | . . . . . | {throughput maximization} [2013-01] |
H04L 25/0398 | . . . | {Restoration of channel reciprocity} [2013-01] |
H04L 25/03987 | . . . | {Equalisation for sparse channels} [2013-01] |
H04L 25/03993 | . . . | {Noise whitening} [2013-01] |
H04L 25/05 | . . | Electric or magnetic storage of signals before transmitting or retransmitting for changing the transmission rate [2013-01] |
H04L 25/06 | . . | Dc level restoring means; Bias distortion correction {; Decision circuits providing symbol by symbol detection} [2021-08] |
H04L 25/061 | . . . | {providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset (removal of dc offset in coupling arrangements H04L 25/029, H04L 25/0296)} [2013-01] |
H04L 25/062 | . . . . | {Setting decision thresholds using feedforward techniques only} [2013-01] |
H04L 25/063 | . . . . | {Setting decision thresholds using feedback techniques only} [2013-01] |
H04L 25/064 | . . . . . | {Subtraction of the threshold from the signal, which is then compared to a supplementary fixed threshold} [2013-01] |
H04L 25/065 | . . . . | {Binary decisions} [2013-01] |
H04L 25/066 | . . . . | {Multilevel decisions, not including self-organising maps} [2013-01] |
H04L 25/067 | . . . | {providing soft decisions, i.e. decisions together with an estimate of reliability (H04L 25/068 and H04L 25/069 take precedence; sequence estimation techniques H04L 25/03178)} [2013-01] |
H04L 25/068 | . . . | {by sampling faster than the nominal bit rate} [2013-01] |
H04L 25/069 | . . . | {by detecting edges or zero crossings} [2013-01] |
H04L 25/08 | . . | Modifications for reducing interference; Modifications for reducing effects due to line faults {; Receiver end arrangements for detecting or overcoming line faults} [2017-08] |
H04L 25/085 | . . . | {Arrangements for reducing interference in line transmission systems, e.g. by differential transmission} [2013-01] |
H04L 25/10 | . . | Compensating for variations in line balance [2021-08] |
H04L 25/12 | . . | Compensating for variations in line impedance [2021-08] |
H04L 25/14 | . . | Channel dividing arrangements {, i.e. in which a single bit stream is divided between several baseband channels and reassembled at the receiver} [2021-08] |
H04L 25/20 | . . | Repeater circuits; Relay circuits [2013-01] |
H04L 25/202 | . . . | {using mechanical devices (H04L 25/205 takes precedence)} [2013-01] |
H04L 25/205 | . . . | {using tuning forks or vibrating reeds} [2013-01] |
H04L 25/207 | . . . | {using electromagnetic switches} [2013-01] |
H04L 25/22 | . . . | Repeaters for converting two wires to four wires; Repeaters for converting single current to double current [2021-08] |
H04L 25/24 | . . . | Relay circuits using discharge tubes or semiconductor devices {(H04L 25/22 takes precedence)} [2013-01] |
H04L 25/242 | . . . . | {with retiming} [2013-01] |
H04L 25/245 | . . . . . | {for start-stop signals (detection of start or stop bits H04J 3/0602)} [2013-01] |
H04L 25/247 | . . . . . | {for synchronous signals} [2013-01] |
H04L 25/26 | . . . | Circuits with optical sensing means {, i.e. using opto-couplers for isolation} [2017-08] |
H04L 25/38 | . | Synchronous or start-stop systems, e.g. for Baudot code [2013-01] |
H04L 25/40 | . . | Transmitting circuits; Receiving circuits {(repeater circuits, relay circuits H04L 25/20)} [2021-08] |
H04L 25/42 | . . . | using mechanical distributors [2013-01] |
H04L 25/44 | . . . | using relay distributors [2013-01] |
H04L 25/45 | . . . | using electronic distributors [2021-08] |
H04L 25/46 | . . . | using tuning forks or vibrating reeds [2013-01] |
H04L 25/49 | . . . | using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels {; Baseband coding techniques specific to data transmission systems (spectral shaping H04L 25/03828)} [2017-08] |
H04L 25/4902 | . . . . | {Pulse width modulation; Pulse position modulation} [2013-01] |
H04L 25/4904 | . . . . | {using self-synchronising codes, e.g. split-phase codes} [2013-01] |
H04L 25/4906 | . . . . | {using binary codes} [2013-01] |
H04L 25/4908 | . . . . . | {using mBnB codes} [2013-01] |
H04L 25/491 | . . . . . . | {using 1B2B codes} [2013-01] |
H04L 25/4912 | . . . . . . . | {using CMI or 2-HDB-3 code} [2013-01] |
H04L 25/4915 | . . . . . | {using pattern inversion or substitution (H04L 25/4908 takes precedence)} [2013-01] |
H04L 25/4917 | . . . . | {using multilevel codes} [2013-01] |
H04L 25/4919 | . . . . . | {using balanced multilevel codes (H04L 25/4927 takes precedence)} [2013-01] |
H04L 25/4921 | . . . . . . | {using quadrature encoding, e.g. carrierless amplitude-phase coding} [2013-01] |
H04L 25/4923 | . . . . . | {using ternary codes (H04L 25/4927 takes precedence)} [2013-01] |
H04L 25/4925 | . . . . . . | {using balanced bipolar ternary codes} [2013-01] |
H04L 25/4927 | . . . . . | {using levels matched to the quantisation levels of the channel} [2013-01] |
H04L 25/493 | . . . . | by transition coding, i.e. the time-position or direction of a transition being encoded before transmission [2013-01] |
H04L 25/497 | . . . . | by correlative coding, e.g. partial response coding or echo modulation coding {transmitters and receivers for partial response systems (transversal equalizers at the transmitter end H04L 25/03343)} [2021-08] |
H04L 25/4975 | . . . . . | {Correlative coding using Tomlinson precoding, Harashima precoding, Trellis precoding or GPRS} [2013-01] |
H04L 27/00 | Modulated-carrier systems [2021-08] |
H04L 27/0002 | . | {analog front ends; means for connecting modulators, demodulators or transceivers to a transmission line (duplex arrangements H04L 5/143)} [2013-01] |
H04L 27/0004 | . | {using wavelets} [2013-01] |
H04L 27/0006 | . | {Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio (for spectrum sharing between different networks H04W 16/14)} [2013-01] |
H04L 27/0008 | . | {arrangements for allowing a transmitter or receiver to use more than one type of modulation (negotiating modulation type for two-way transmission paths H04L 5/1453)} [2013-01] |
H04L 27/001 | . | {using chaotic signals (for secret or secure communication H04L 9/001)} [2013-01] |
H04L 27/0012 | . | {arrangements for identifying the type of modulation} [2013-01] |
H04L 27/0014 | . | {Carrier regulation (of chaotic carriers H04L 27/001; for multicarrier receivers H04L 27/2657)} [2013-01] |
H04L 2027/0016 | . . | {Stabilisation of local oscillators} [2013-01] |
H04L 2027/0018 | . . | {Arrangements at the transmitter end} [2013-01] |
H04L 2027/002 | . . . | {using feedback from a remote receiver} [2013-01] |
H04L 2027/0022 | . . . | {using the carrier of the associated receiver of a transceiver} [2013-01] |
H04L 2027/0024 | . . | {at the receiver end} [2013-01] |
H04L 2027/0026 | . . . | {Correction of carrier offset} [2013-01] |
H04L 2027/0028 | . . . . | {at passband only} [2013-01] |
H04L 2027/003 | . . . . | {at baseband only} [2013-01] |
H04L 2027/0032 | . . . . | {at baseband and passband} [2013-01] |
H04L 2027/0034 | . . . . | {using hypothesis testing} [2013-01] |
H04L 2027/0036 | . . . . | {using a recovered symbol clock} [2013-01] |
H04L 2027/0038 | . . . . | {using an equaliser} [2013-01] |
H04L 2027/004 | . . . . . | {the equaliser providing control signals} [2013-01] |
H04L 2027/0042 | . . . . . | {the equaliser providing the offset correction per se} [2013-01] |
H04L 2027/0044 | . . | {Control loops for carrier regulation} [2013-01] |
H04L 2027/0046 | . . . | {Open loops} [2013-01] |
H04L 2027/0048 | . . . . | {Frequency multiplication} [2013-01] |
H04L 2027/0051 | . . . . | {Harmonic tracking} [2013-01] |
H04L 2027/0053 | . . . | {Closed loops} [2013-01] |
H04L 2027/0055 | . . . . | {single phase} [2013-01] |
H04L 2027/0057 | . . . . | {quadrature phase} [2013-01] |
H04L 2027/0059 | . . . . | {more than two phases} [2013-01] |
H04L 2027/0061 | . . . . | {remodulation} [2013-01] |
H04L 2027/0063 | . . . | {Elements of loops} [2013-01] |
H04L 2027/0065 | . . . . | {Frequency error detectors (H04L 2027/0067 takes precedence)} [2013-01] |
H04L 2027/0067 | . . . . | {Phase error detectors} [2013-01] |
H04L 2027/0069 | . . . . | {Loop filters} [2013-01] |
H04L 2027/0071 | . . . | {Control of loops} [2013-01] |
H04L 2027/0073 | . . . . | {Detection of synchronisation state} [2013-01] |
H04L 2027/0075 | . . . . | {Error weighting} [2013-01] |
H04L 2027/0077 | . . . . . | {stop and go} [2013-01] |
H04L 2027/0079 | . . . . | {Switching between loops} [2013-01] |
H04L 2027/0081 | . . . . . | {between loops of different bandwidths} [2013-01] |
H04L 2027/0083 | . . | {Signalling arrangements} [2013-01] |
H04L 2027/0085 | . . . | {with no special signals for synchronisation} [2013-01] |
H04L 2027/0087 | . . . | {Out-of-band signals, (e.g. pilots)} [2013-01] |
H04L 2027/0089 | . . . | {In-band signals} [2013-01] |
H04L 2027/0091 | . . . . | {Continuous signals} [2013-01] |
H04L 2027/0093 | . . . . | {Intermittant signals} [2013-01] |
H04L 2027/0095 | . . . . . | {in a preamble or similar structure} [2013-01] |
H04L 2027/0097 | . . . | {Adaptive synchronisation signals} [2013-01] |
H04L 27/01 | . | Equalisers {(baseband equalizers at the transmitter end H04L 25/03343; in analogue transmission systems H04B 3/04, H04B 7/005)} [2021-08] |
H04L 27/02 | . | Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation (H04L 27/32 takes precedence) [2013-01] |
H04L 27/04 | . . | Modulator circuits; Transmitter circuits [2021-01] |
H04L 27/06 | . . | Demodulator circuits; Receiver circuits [2021-01] |
H04L 27/063 | . . . | {Superheterodyne receivers} [2013-01] |
H04L 27/066 | . . . | {Carrier recovery circuits (H04L 27/2271 takes precedence)} [2013-01] |
H04L 27/08 | . . | Amplitude regulation arrangements [2013-01] |
H04L 27/10 | . | Frequency-modulated carrier systems, i.e. using frequency-shift keying (H04L 27/32 takes precedence) [2021-08] |
H04L 27/103 | . . | {Chirp modulation (for spread spectrum techniques H04B 1/69)} [2022-05] |
H04L 27/106 | . . | {M-ary FSK} [2013-01] |
H04L 27/12 | . . | Modulator circuits; Transmitter circuits [2022-05] |
H04L 27/122 | . . . | {using digital generation of carrier signals (digital function generators G06F 1/02, H04L 17/10; generating pulses having stepped portions using digital techniques H03K 4/026)} [2013-01] |
H04L 27/125 | . . . | {using a controlled oscillator in an open loop} [2013-01] |
H04L 27/127 | . . . | {using a controlled oscillator in a feedback loop} [2013-01] |
H04L 27/14 | . . | Demodulator circuits; Receiver circuits [2022-05] |
H04L 27/142 | . . . | {Compensating direct current components occurring during the demodulation and which are caused by mistuning} [2013-01] |
H04L 27/144 | . . . | with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements [2013-01] |
H04L 27/148 | . . . . | using filters, including PLL-type filters [2013-01] |
H04L 27/152 | . . . . | using controlled oscillators, e.g. PLL arrangements [2013-01] |
H04L 27/1525 | . . . . . | {using quadrature demodulation} [2013-01] |
H04L 27/156 | . . . | with demodulation using temporal properties of the received signal, e.g. detecting pulse width [2013-01] |
H04L 27/1563 | . . . . | {using transition or level detection} [2013-01] |
H04L 27/1566 | . . . . | {using synchronous sampling} [2013-01] |
H04L 27/16 | . . | Frequency regulation arrangements [2013-01] |
H04L 27/18 | . | Phase-modulated carrier systems, i.e. using phase-shift keying (H04L 27/32 takes precedence) [2021-01] |
H04L 27/183 | . . | {Multiresolution systems} [2013-01] |
H04L 27/186 | . . | {in which the information is carried by both the individual signal points and the subset to which the individual signal points belong, e.g. coset coding or related schemes} [2013-01] |
H04L 27/20 | . . | Modulator circuits; Transmitter circuits [2021-01] |
H04L 27/2003 | . . . | {for continuous phase modulation (frequency shift keying H04L 27/10)} [2013-01] |
H04L 27/2007 | . . . . | {in which the phase change within each symbol period is constrained (coset coding H04L 27/186)} [2013-01] |
H04L 27/201 | . . . . . | {in which the allowed phase changes vary with time, e.g. multi-h modulation} [2013-01] |
H04L 27/2014 | . . . . . | {in which the phase changes in a piecewise linear manner during each symbol period, e.g. minimum shift keying, fast frequency shift keying (H04L 27/201 takes precedence)} [2013-01] |
H04L 27/2017 | . . . . . | {in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation (H04L 27/201 takes precedence)} [2013-01] |
H04L 27/2021 | . . . . | {in which the phase change per symbol period is not constrained} [2013-01] |
H04L 27/2025 | . . . . . | {in which the phase changes in a piecewise linear manner within each symbol period} [2013-01] |
H04L 27/2028 | . . . . . | {in which the phase changes are non-linear} [2013-01] |
H04L 27/2032 | . . . | {for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner} [2013-01] |
H04L 27/2035 | . . . . | {using a single or unspecified number of carriers} [2013-01] |
H04L 27/2039 | . . . . . | {using microwave technology} [2013-01] |
H04L 27/2042 | . . . . . | {with more than two phase states} [2013-01] |
H04L 27/2046 | . . . . . . | {in which the data are represented by carrier phase} [2013-01] |
H04L 27/205 | . . . . . . | {in which the data are represented by the change in phase of the carrier} [2013-01] |
H04L 27/2053 | . . . . | {using more than one carrier, e.g. carriers with different phases} [2013-01] |
H04L 27/2057 | . . . . . | {with a separate carrier for each phase state} [2013-01] |
H04L 27/206 | . . . . . | {using a pair of orthogonal carriers, e.g. quadrature carriers} [2013-01] |
H04L 27/2064 | . . . . . . | {using microwave technology} [2013-01] |
H04L 27/2067 | . . . . . . | {with more than two phase states (H04L 27/2064 takes precedence)} [2013-01] |
H04L 27/2071 | . . . . . . . | {in which the data are represented by the carrier phase, e.g. systems with differential coding} [2013-01] |
H04L 27/2075 | . . . . . . . | {in which the data are represented by the change in carrier phase} [2013-01] |
H04L 27/2078 | . . . . . . . | {in which the phase change per symbol period is constrained (coset coding H04L 27/186)} [2013-01] |
H04L 27/2082 | . . . . . . . . | {for offset or staggered quadrature phase shift keying} [2013-01] |
H04L 27/2085 | . . . . . . . | {with more than one phase shift per symbol period} [2013-01] |
H04L 27/2089 | . . . . . . . | {with unbalanced quadrature channels} [2013-01] |
H04L 27/2092 | . . . . | {with digital generation of the modulated carrier (does not include the modulation of a digitally generated carrier)} [2013-01] |
H04L 27/2096 | . . . | {Arrangements for directly or externally modulating an optical carrier (optical modulation H04B 10/503)} [2013-01] |
H04L 27/22 | . . | Demodulator circuits; Receiver circuits [2021-01] |
H04L 27/223 | . . . | {Demodulation in the optical domain (optical demodulation H04B 10/676)} [2013-01] |
H04L 27/227 | . . . | using coherent demodulation [2013-01] |
H04L 27/2271 | . . . . | {wherein the carrier recovery circuit uses only the demodulated signals} [2013-01] |
H04L 27/2272 | . . . . . | {using phase locked loops (H04L 27/2273 takes precedence)} [2013-01] |
H04L 27/2273 | . . . . . | {associated with quadrature demodulation, e.g. Costas loop} [2013-01] |
H04L 27/2275 | . . . . | {wherein the carrier recovery circuit uses the received modulated signals} [2013-01] |
H04L 27/2276 | . . . . . | {using frequency multiplication or harmonic tracking} [2013-01] |
H04L 27/2277 | . . . . . | {using remodulation} [2013-01] |
H04L 27/2278 | . . . . . | {using correlation techniques, e.g. for spread spectrum signals} [2013-01] |
H04L 27/233 | . . . | using non-coherent demodulation [2013-01] |
H04L 27/2331 | . . . . | {wherein the received signal is demodulated using one or more delayed versions of itself} [2013-01] |
H04L 27/2332 | . . . . | {using a non-coherent carrier} [2013-01] |
H04L 27/2334 | . . . . | {using filters} [2013-01] |
H04L 27/2335 | . . . . | {using temporal properties of the received signal} [2013-01] |
H04L 27/2337 | . . . . . | {using digital techniques to measure the time between zero-crossings} [2013-01] |
H04L 27/2338 | . . . . | {using sampling (H04L 27/2331 - H04L 27/2335 take precedence)} [2016-05] |
H04L 27/24 | . . | Half-wave signalling systems [2013-01] |
H04L 27/26 | . |
H04L 27/2601 | . . | {Multicarrier modulation systems} [2013-01] |
H04L 27/2602 | . . . | {Signal structure} [2023-05] |
H04L 27/26025 | . . . . | {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L 5/003)} [2023-05] |
H04L 27/2603 | . . . . | {Signal structure ensuring backward compatibility with legacy system} [2023-05] |
H04L 27/26035 | . . . . | {Maintenance of orthogonality, e.g. for signals exchanged between cells or users, or by using covering codes or sequences (using different training sequence per antenna H04B 7/0684; code allocation H04J 13/16)} [2023-05] |
H04L 27/2604 | . . . . | {Multiresolution systems (by means of multiresolution subcarriers H04L 27/183, H04L 27/3488)} [2013-01] |
H04L 27/2605 | . . . . | {Symbol extensions, e.g. Zero Tail, Unique Word [UW]} [2021-01] |
H04L 27/261 | . . . . | {Details of reference signals} [2023-05] |
H04L 27/2613 | . . . . . | {Structure of the reference signals} [2023-05] |
H04L 27/26132 | . . . . . . | {using repetition} [2023-05] |
H04L 27/26134 | . . . . . . | {Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain} [2023-05] |
H04L 27/26136 | . . . . . . | {Pilot sequence conveying additional information} [2023-05] |
H04L 27/2614 | . . . | {Peak power aspects} [2013-01] |
H04L 27/2615 | . . . . | {Reduction thereof using coding} [2013-01] |
H04L 27/2617 | . . . . . | {using block codes} [2013-01] |
H04L 27/2618 | . . . . | {Reduction thereof using auxiliary subcarriers} [2013-01] |
H04L 27/262 | . . . . | {Reduction thereof by selection of pilot symbols} [2023-05] |
H04L 27/2621 | . . . . | {Reduction thereof using phase offsets between subcarriers} [2013-01] |
H04L 27/2623 | . . . . | {Reduction thereof by clipping} [2013-01] |
H04L 27/2626 | . . . | {Arrangements specific to the transmitter only} [2023-05] |
H04L 27/26265 | . . . . | {Arrangements for sidelobes suppression specially adapted to multicarrier systems, e.g. spectral precoding} [2023-05] |
H04L 27/2627 | . . . . | {Modulators} [2013-01] |
H04L 27/2628 | . . . . . | {Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators (H04L 27/2634 takes precedence)} [2023-05] |
H04L 27/263 | . . . . . . | {modification of IFFT/IDFT modulator for performance improvement} [2023-05] |
H04L 27/2631 | . . . . . . | {with polyphase implementation} [2023-05] |
H04L 27/2633 | . . . . . . | {using partial FFTs} [2023-05] |
H04L 27/2634 | . . . . . | {Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation} [2023-05] |
H04L 27/26362 | . . . . . . | {Subcarrier weighting equivalent to time domain filtering, e.g. weighting per subcarrier multiplication (arrangements for removing intersymbol interference at the transmitter end H04L 25/03343)} [2023-05] |
H04L 27/2637 | . . . . . | {with direct modulation of individual subcarriers} [2013-01] |
H04L 27/2639 | . . . . . | {Modulators using other transforms, e.g. discrete cosine transforms, Orthogonal Time Frequency and Space [OTFS] or hermetic transforms} [2021-01] |
H04L 27/264 | . . . . . | {Pulse-shaped multi-carrier, i.e. not using rectangular window} [2023-05] |
H04L 27/26412 | . . . . . . | {Filtering over the entire frequency band, e.g. filtered orthogonal frequency-division multiplexing [OFDM]} [2023-05] |
H04L 27/26414 | . . . . . . | {Filtering per subband or per resource block, e.g. universal filtered multicarrier [UFMC] or generalized frequency division multiplexing [GFDM]} [2023-05] |
H04L 27/26416 | . . . . . . | {Filtering per subcarrier, e.g. filterbank multicarrier [FBMC]} [2023-05] |
H04L 27/2642 | . . . . . | {Wavelet transform modulators (wavelet-division H04L 5/0008)} [2021-01] |
H04L 27/2643 | . . . . . | {using symbol repetition, e.g. time domain realization of distributed FDMA} [2013-01] |
H04L 27/2644 | . . . . . | {with oversampling} [2013-01] |
H04L 27/2646 | . . . . | {using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length} [2013-01] |
H04L 27/2647 | . . . | {Arrangements specific to the receiver only (equalisation H04L 27/01)} [2021-01] |
H04L 27/2649 | . . . . | {Demodulators} [2023-05] |
H04L 27/265 | . . . . . | {Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators (H04L 27/26524 takes precedence)} [2023-05] |
H04L 27/2651 | . . . . . . | {Modification of fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators for performance improvement} [2023-05] |
H04L 27/2652 | . . . . . . | {with polyphase implementation} [2013-01] |
H04L 27/26522 | . . . . . . | {using partial FFTs} [2023-05] |
H04L 27/26524 | . . . . . | {Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation} [2023-05] |
H04L 27/26526 | . . . . . . | {with inverse FFT [IFFT] or inverse DFT [IDFT] demodulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] receiver or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]} [2021-01] |
H04L 27/2653 | . . . . . | {with direct demodulation of individual subcarriers} [2013-01] |
H04L 27/26532 | . . . . . | {Demodulators using other transforms, e.g. discrete cosine transforms, Orthogonal Time Frequency and Space [OTFS] or hermetic transforms} [2023-05] |
H04L 27/26534 | . . . . . | {Pulse-shaped multi-carrier, i.e. not using rectangular window} [2023-05] |
H04L 27/26536 | . . . . . . | {Filtering over the entire frequency band, e.g. filtered orthogonal frequency division multiplexing [OFDM]} [2021-01] |
H04L 27/26538 | . . . . . . | {Filtering per subband or per resource block, e.g. universal filtered multicarrier [UFMC] or generalized frequency division multiplexing [GFDM]} [2021-01] |
H04L 27/2654 | . . . . . . | {Filtering per subcarrier, e.g. filterbank multicarrier [FBMC]} [2021-01] |
H04L 27/26542 | . . . . . | {Wavelet transform demodulators (wavelet-division H04L 5/0008)} [2023-05] |
H04L 27/26544 | . . . . . | {Demodulators for signals generated by symbol repetition (synchronisation arrangements H04L 27/2655)} [2023-05] |
H04L 27/26546 | . . . . . | {with oversampling} [2023-05] |
H04L 27/2655 | . . . . | {Synchronisation arrangements} [2013-01] |
H04L 27/2656 | . . . . . | {Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation} [2021-01] |
H04L 27/2657 | . . . . . | {Carrier synchronisation} [2013-01] |
H04L 27/2659 | . . . . . . | {Coarse or integer frequency offset determination and synchronisation} [2013-01] |
H04L 27/266 | . . . . . . | {Fine or fractional frequency offset determination and synchronisation} [2013-01] |
H04L 27/2662 | . . . . . | {Symbol synchronisation} [2013-01] |
H04L 27/2663 | . . . . . . | {Coarse synchronisation, e.g. by correlation} [2013-01] |
H04L 27/2665 | . . . . . . | {Fine synchronisation, e.g. by positioning the FFT window} [2013-01] |
H04L 27/2666 | . . . . . | {Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length} [2013-01] |
H04L 27/2668 | . . . . . | {Details of algorithms} [2013-01] |
H04L 27/2669 | . . . . . . | {characterised by the domain of operation} [2013-01] |
H04L 27/2671 | . . . . . . . | {Time domain} [2013-01] |
H04L 27/2672 | . . . . . . . | {Frequency domain} [2013-01] |
H04L 27/2673 | . . . . . . | {characterised by synchronisation parameters} [2013-01] |
H04L 27/2675 | . . . . . . . | {Pilot or known symbols} [2021-01] |
H04L 27/2676 | . . . . . . . | {Blind, i.e. without using known symbols} [2013-01] |
H04L 27/2681 | . . . . . . | {characterised by constraints} [2023-05] |
H04L 27/2682 | . . . . . . . | {Precision} [2013-01] |
H04L 27/2684 | . . . . . . . | {Complexity} [2013-01] |
H04L 27/2685 | . . . . . . . | {Speed of convergence} [2013-01] |
H04L 27/2686 | . . . . . . . | {Range of frequencies or delays tested} [2013-01] |
H04L 27/2688 | . . . . . . . | {Resistance to perturbation, e.g. noise, interference or fading} [2013-01] |
H04L 27/26885 | . . . . . . . | {Adaptation to rapid radio propagation changes, e.g. due to velocity} [2023-05] |
H04L 27/2689 | . . . . . | {Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation} [2013-01] |
H04L 27/2691 | . . . . . . | {involving interference determination or cancellation} [2021-01] |
H04L 27/2692 | . . . . . . | {with preamble design, i.e. with negotiation of the synchronisation sequence with transmitter or sequence linked to the algorithm used at the receiver} [2013-01] |
H04L 27/2694 | . . . . . . . | {adaptive design} [2013-01] |
H04L 27/2695 | . . . . . . | {with channel estimation, e.g. determination of delay spread, derivative or peak tracking (channel estimation H04L 25/0202)} [2021-01] |
H04L 27/2697 | . . . | {in combination with other modulation techniques} [2013-01] |
H04L 27/28 | . . | with simultaneous transmission of different frequencies each representing one code element [2013-01] |
H04L 27/30 | . . | wherein each code element is represented by a combination of frequencies [2013-01] |
H04L 27/32 | . | Carrier systems characterised by combinations of two or more of the types covered by groups H04L 27/02, H04L 27/10, H04L 27/18 or H04L 27/26 [2013-01] |
H04L 27/34 | . . | Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems [2013-01] |
H04L 27/3405 | . . . | {Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power} [2013-01] |
H04L 27/3411 | . . . . | {reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set} [2013-01] |
H04L 27/3416 | . . . . | {in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes} [2013-01] |
H04L 27/3422 | . . . . . | {in which the constellation is not the n - fold Cartesian product of a single underlying two-dimensional constellation} [2013-01] |
H04L 27/3427 | . . . . . | {in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation} [2013-01] |
H04L 27/3433 | . . . . . . | {using an underlying square constellation} [2013-01] |
H04L 27/3438 | . . . . . . | {using an underlying generalised cross constellation} [2013-01] |
H04L 27/3444 | . . . . | {by applying a certain rotation to regular constellations} [2013-01] |
H04L 27/345 | . . . | {Modifications of the signal space to allow the transmission of additional information} [2013-01] |
H04L 27/3455 | . . . . | {in order to facilitate carrier recovery at the receiver end, e.g. by transmitting a pilot or by using additional signal points to allow the detection of rotations} [2013-01] |
H04L 27/3461 | . . . . | {in order to transmit a subchannel} [2013-01] |
H04L 27/3466 | . . . . . | {by providing an alternative to one signal point} [2013-01] |
H04L 27/3472 | . . . . . | {by switching between alternative constellations} [2013-01] |
H04L 27/3477 | . . . . . | {by using the outer points of the constellation or of the constituent two-dimensional constellations} [2013-01] |
H04L 27/3483 | . . . . . | {using a modulation of the constellation points} [2013-01] |
H04L 27/3488 | . . . | {Multiresolution systems} [2013-01] |
H04L 27/3494 | . . . | {using non - square modulating pulses, e.g. using raised cosine pulses; Partial response QAM, i.e. with partial response pulse shaping (QAM over partial response channels H04L 25/497)} [2013-01] |
H04L 27/36 | . . . | Modulator circuits; Transmitter circuits [2013-01] |
H04L 27/361 | . . . . | {Modulation using a single or unspecified number of carriers, e.g. with separate stages of phase and amplitude modulation} [2013-01] |
H04L 27/362 | . . . . | {Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated (H04L 27/366 takes precedence)} [2013-01] |
H04L 27/363 | . . . . . | {using non - square modulating pulses, modulators specifically designed for this (transmission of non - square QAM H04L 27/3494)} [2013-01] |
H04L 27/364 | . . . . . | {Arrangements for overcoming imperfections in the modulator, e.g. quadrature error or unbalanced I and Q levels} [2013-01] |
H04L 27/365 | . . . . | {Modulation using digital generation of the modulated carrier (not including modulation of a digitally generated carrier)} [2013-01] |
H04L 27/366 | . . . . | {Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator} [2013-01] |
H04L 27/367 | . . . . . | {using predistortion} [2013-01] |
H04L 27/368 | . . . . . . | {adaptive predistortion} [2013-01] |
H04L 27/38 | . . . | Demodulator circuits; Receiver circuits [2013-01] |
H04L 27/3809 | . . . . | {Amplitude regulation arrangements} [2013-01] |
H04L 27/3818 | . . . . | {using coherent demodulation, i.e. using one or more nominally phase synchronous carriers (H04L 27/227 and H04L 27/389 take precedence)} [2013-01] |
H04L 27/3827 | . . . . . | {in which the carrier is recovered using only the demodulated baseband signals} [2013-01] |
H04L 27/3836 | . . . . . | {in which the carrier is recovered using the received modulated signal or the received IF signal, e.g. by detecting a pilot or by frequency multiplication} [2013-01] |
H04L 27/3845 | . . . . | {using non - coherent demodulation, i.e. not using a phase synchronous carrier} [2013-01] |
H04L 27/3854 | . . . . . | {using a non - coherent carrier, including systems with baseband correction for phase or frequency offset} [2013-01] |
H04L 27/3863 | . . . . . . | {Compensation for quadrature error in the received signal} [2013-01] |
H04L 27/3872 | . . . . . . | {Compensation for phase rotation in the demodulated signal} [2013-01] |
H04L 27/3881 | . . . . . | {using sampling and digital processing, not including digital systems which imitate heterodyne or homodyne demodulation} [2013-01] |
H04L 27/389 | . . . . | {with separate demodulation for the phase and amplitude components} [2013-01] |
| H04L 41/00 | Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks [2022-05] WARNING
|
H04L 41/02 | . | Standardisation; Integration [2022-05] |
H04L 41/0213 | . . | Standardised network management protocols, e.g. simple network management protocol [SNMP] [2022-05] |
H04L 41/022 | . . | Multivendor or multi-standard integration [2022-05] |
H04L 41/0226 | . . | Mapping or translating multiple network management protocols [2022-05] |
H04L 41/0233 | . . | Object-oriented techniques, for representation of network management data, e.g. common object request broker architecture [CORBA] [2022-05] |
H04L 41/024 | . . | {using relational databases for representation of network management data, e.g. managing via structured query language [SQL]} [2022-05] |
H04L 41/0246 | . . | Exchanging or transporting network management information using the Internet; Embedding network management web servers in network elements; Web-services-based protocols [2022-05] |
H04L 41/0253 | . . . | using browsers or web-pages for accessing management information [2022-05] |
H04L 41/026 | . . . | using e-messaging for transporting management information, e.g. email, instant messaging or chat [2022-05] |
H04L 41/0266 | . . . | using meta-data, objects or commands for formatting management information, e.g. using eXtensible markup language [XML] [2022-05] |
H04L 41/0273 | . . . | using web services for network management, e.g. simple object access protocol [SOAP] [2022-05] |
H04L 41/028 | . . . . | {for synchronisation between service call and response} [2022-05] |
H04L 41/0286 | . . . . | {for search or classification or discovery of web services providing management functionalities} [2022-05] |
H04L 41/0293 | . . . . | {for accessing web services by means of a binding identification of the management service or element} [2022-05] |
| H04L 41/04 | . | Network management architectures or arrangements [2022-05] WARNING
|
H04L 41/042 | . . | comprising distributed management centres cooperatively managing the network [2022-05] |
H04L 41/044 | . . | comprising hierarchical management structures [2022-05] |
| H04L 41/045 | . . | comprising client-server management architectures [2022-05] WARNING
|
H04L 41/046 | . . | comprising network management agents or mobile agents therefor [2022-05] |
| H04L 41/052 | . . | using standardised network management architectures, e.g. telecommunication management network [TMN] or unified network management architecture [UNMA] [2022-05] WARNING
|
H04L 41/06 | . | Management of faults, events, alarms or notifications [2022-05] |
H04L 41/0604 | . . | using filtering, e.g. reduction of information by using priority, element types, position or time [2022-05] |
H04L 41/0609 | . . . | {based on severity or priority} [2022-01] |
H04L 41/0613 | . . . | {based on the type or category of the network elements} [2022-01] |
H04L 41/0618 | . . . | {based on the physical or logical position} [2022-01] |
H04L 41/0622 | . . . | {based on time} [2022-01] |
H04L 41/0627 | . . . | {by acting on the notification or alarm source} [2022-01] |