Subclass Full Title From Class 370 MULTIPLEX COMMUNICATIONS

Class 370

MULTIPLEX COMMUNICATIONS

200

PHANTOM

201

CROSSTALK SUPPRESSION

202

AMPLITUDE COMPRESSION OR EXPANSION

203

GENERALIZED ORTHOGONAL OR SPECIAL MATHEMATICAL TECHNIQUES

204

. Plural diverse modulation techniques

205

.. Pulse width and pulse position modulation

206

. Quadrature carriers

207

.. Having a signaling constellation

208

. Particular set of orthogonal functions

209

.. Walsh functions

210

. Fourier transform

211

. Level multiplex

212

PULSE WIDTH (PULSE DURATION) MODULATION

213

PULSE POSITION MODULATION

214

SIMULTANEOUS TELEGRAPHY AND TELEPHONY

215

PHASE MODULATION

216

FAULT RECOVERY

217

. Bypass an inoperative switch or inoperative element of a switching system

218

.. Packet switching system or element

219

... Standby switch

220

.. Standby switch

221

. Bypass an inoperative station

222

.. In a ring or loop network

223

... Using a secondary ring or loop

224

.... Loopback of signals on the secondary ring or loop

225

. Bypass an inoperative channel

226

.. In a repeater system

227

... Using a spare channel

228

.. Spare channel

229

DATA FLOW CONGESTION PREVENTION OR CONTROL

230

. Control of data admission to the network

230.1

.. Traffic shaping

231

.. End-to-end flow control

232

.. Based on data flow rate measurement

233

... Measurement of the peak data flow rate

234

... Measurement of the average data flow rate

235

. Flow control of data transmission through a network

235.1

.. Using leaky bucket technique

236

.. Including signaling between network elements

236.1

... Using RM (Resource Management) cells

236.2

... Using OAM (Operation, Administration and Maintenance) cells

237

.. Congestion based rerouting

238

.. Least cost or minimum delay routing

238.1

... ATM least cost routing

239

. Using antijabber circuit

240

.. In a star coupler

241

DIAGNOSTIC TESTING (OTHER THAN SYNCHRONIZATION)

241.1

. Using OAM (Operation, Administration and Maintenance) cells

242

. Fault detection

243

.. Of a repeater system

244

.. Of a switching system

245

.. Of a local area network

246

. Of a repeater

247

.. Having a dedicated test line or channel

248

. Path check

249

. Loopback

250

. Of a switching system

251

.. Having dedicated test line or channel

252

. Determination of communication parameters

253

.. Measurement of flow rate of messages having an address header

254

NETWORK CONFIGURATION DETERMINATION

255

. Using a particular learning algorithm or technique

256

.. Spanning tree

257

. In a bus system

258

.. In a ring system

259

SPECIAL SERVICES

260

. Conferencing

261

.. Technique for setting up a conference call

262

... Operator setup of the conference

263

.. Conferee signals combined or distributed via time channels

264

... Using plural diverse channel communications with a dedicated signaling channel (i.e., ISDN)

265

... Particular technique for combining diverse information types

266

... Using summation of conferee signals

267

.... Digital summation

268

..... Including cancellation of certain signals

269

.... Including cancellation of certain signals

270

. Distribution of signal to multiple agent stations

271

. Special feature of multiplex telephone terminal

272

SEXTUPLEX

273

QUADRUPLEX

274

. Repeater

275

. Duplex diplex

276

DUPLEX

277

. Communication over free space

278

.. Transmit/receive interaction control

279

.. Duplex repeaters

280

.. Time division

281

.. Frequency division

282

. Transmit/receive interaction control

283

.. Artificial line

284

.. Differential

285

.. Bridge

286

.. Echo suppression or cancellation

287

... Disabling or inhibiting

288

... Using an attenuator

289

... Having residual echo cancellation or suppression

290

... Using a particular adaptive filter

291

.... Using a transversal filter

292

... Using a training sequence

293

. Duplex repeaters or extenders

294

. Time division

295

. Frequency division

296

. Convertible to half duplex

297

DIPLEX

298

LOW SPEED ASYNCHRONOUS DATA SYSTEM (E.G., TELETYPEWRITER SERVICE)

299

. Data switching exchange

300

. Data assembly or formatting

301

. Transmitting time of transition and logic state

302

. Channels separated in frequency

303

. Rotary distributor

304

.. Synchronizer

305

... Start-Stop

306

.... Nonmechanical

307

TRASMULTIPLEXERS

308

RESONANT TRANSFER TECHNIQUES

309

RESONANT TRANSFER SUBSTITUTES

310

COMMUNICATION OVER FREE SPACE

310.1

. Using ATM as a wireles protocol

310.2

.. Having a plurality of contiguous regions served by respective fixed stations

311

. Signaling for performing battery saving

312

. Message addressed to multiple destinations

313

. Portable address responsive receiver

314

.. Using time division multiplexing

315

. Repeater

316

.. Airborne or space satellite repeater

317

... Including noise compensation

318

.... Including power control

319

... Multiple access (e.g., FDMA)

320

.... Code division (CDMA)

321

.... Time division (TDMA)

322

..... Channel reservation scheme

323

..... Including onboard switching

324

..... Synchronization

325

.... Including onboard switching

326

... Combining or distributing information via time channels

327

.. In a trunking system

328

. Having a plurality of contiguous regions served by respective fixed stations

329

.. Channel assignment

330

... Having both time and frequency assignment

331

... Hand-off control

332

.... Based upon a particular signal quality measurement

333

..... Signal quality determined by bit error rate

334

..... Using multiple antennas at a station

335

... Combining or distributing information via code word channels using multiple access techniques (e.g., CDMA)

336

... Combining or distributing information via time channels

337

.... Multiple access (e.g., TDMA)

338

.. Contiguous regions interconnected by a local area network

339

. Plural usage of common antenna

340

. Using trunking

341

.. Channel assignment

342

. Combining or distributing information via code word channels using multiple access techniques (e.g., CDMA)

343

. Combining or distributing information via frequency channels

344

.. Multiple access (e.g., FDMA)

345

. Combining or distributing information via time channels

346

.. Polling

347

.. Multiple access (e.g., TDMA)

348

... Channel reservation scheme

349

.. Using messages having an address field as header

350

.. Synchronization

351

PATHFINDING OR ROUTING

352

. Combined circuit switching and packet switching

353

.. Switching network having common elements to handle both circuit switched traffic and packet switched traffic

354

.. Switching network having separate elements to handle circuit switched traffic and packet switched traffic

355

.. Routing packets through a circuit switching network

356

.. Routing circuit switched traffic through a packet switching network

357

. Through a circuit switch

358

.. Switching input signals having different aggregate bit rates

359

.. Input or output circuit, per se (i.e., line interface)

360

.. Switching control

361

... Folded network

362

... Bus switch

363

.... Having details of control storage arrangement

364

.... Having plural buses

365

..... Separate transmit and receive buses

366

... Including serial-parallel or parallel-serial conversion for input or output

367

.... For distribution to a multiplanar switching network

368

.... Having details of control storage arrangement

369

... Having time and space switches

370

.... Having space switch as intermediate stage (e.g., T-S-T, T-S-S, or S-S-T)

371

..... Having details of control storage arrangement

372

.... Having time switch as intermediate stage (e.g., S-T-S or T-T-S)

373

.... Having supervisory signaling

374

.... Having details of control storage arrangement

375

... Time switch, per se (e.g., T or T-T)

376

.... Time slot interchange, per se

377

.... Having supervisory signaling

378

.... Having details of control storage arrangement

379

..... Data memory addressing

380

... Space switch, per se (e.g., S or S-S)

381

... Having details of control storage arrangement

382

.... Data memory addressing

383

.... Control storage addressing

384

... Having a supervisory signaling feature

385

.... Having a separate signaling network

386

.. Particular switching network arrangement

387

... Multiplanar switch

388

... Multistage switch

389

. Switching a message which includes an address header

390

.. Replicate messages for multiple destination distribution

391

.. Switching input signals having different aggregate bit rates

392

.. Processing of address header for routing, per se

393

... Address concatenation

394

.. Sequencing or resequencing of packets to insure proper output sequence order

395.1

.. Message transmitted using fixed length packets (e.g., ATM cells)

396

... Distributed switching

397

.... Employing logical addressing for routing (e.g., VP or VC)

398

... Centralized switching

399

.... Employing logical addressing for routing (e.g., VP or VC)

395.2

... Connection set-up/disconnect (e.g., Connection Admission Control)

395.21

.... Based on traffic contract (including using setup messages, QoS, delay/bandwidth requirement)

395.3

... Connection identifier assignment

395.31

.... Including routing table

395.32

..... Employing particular searching function (e.g., hashing, alternate, re-routing)

395.4

... Assigning period of time for information to be transmitted (e.g., scheduling)

395.41

.... Based on bandwidth allocation (e.g., Weighted Round Robin)

395.42

.... Based on priority

395.43

..... Based on service category (e.g., CBR, VBR, UBR, or ABR)

395.5

... Multiprotocol network

395.51

.... Utilizing a plurality of ATM networks (e.g., MPOA, SONET, or SDH)

395.52

.... Internet Protocol (including TCP/IP or UDP/IP) over fixed length packet network (e.g., IP over ATM)

395.53

.... Emulated LAN (LANE/ELAN/VLAN, e.g., Ethernet or token ring legacy LAN over a single ATM network/LAN)

395.54

.... Address resolution (e.g., ARP, or NHRP)

395.6

... Adapting detail (e.g., converting to/from ATM, or detail of ATM Adaption Layers (AALs))

395.61

.... Adapting constant bit rate (CBR) data (e.g., voice, or narrow band ISDN over ATM, or using AAL1)

395.62

..... Detail of clock recovery or synchronization

395.63

.... Adapting frame relay/X.25 data (e.g., using AAL 3/4)

395.64

.... Adapting connection-oriented variable bit rate (VBR) data (e.g., MPEG/HDTV packet video/audio over ATM or using AAL2)

395.65

.... Adapting connectionless variable bit rate (VBR) data (e.g., adapting 802.X, or using AAL5)

395.7

... Having detail of switch memory reading/writing

395.71

.... Having input or output storage or both

395.72

.... Having central (e.g., common) storage

400

.. Having a plurality of nodes performing distributed switching

401

... Bridge or gateway between networks

402

.... Bridge between bus systems

403

..... At least one bus is a ring network

404

...... Ring or loop forms backbone for interconnecting other networks

405

....... The other networks are ring or loop networks

406

... Plurality of rings or loops to form a mesh network

407

... Interconnected star couplers

408

... Nodes interconnected in hierarchy to form a tree

409

... Employing logical addressing for routing (e.g., VP or VC)

410

... Having a signaling feature

411

.. Including sorting and merging networks

412

.. Queuing arrangement

413

... Having both input and output queuing

414

.... Contention resolution for output

415

... Having input queuing only

416

.... Contention resolution for output

417

... Having output queuing only

418

.... Contention resolution for output

419

.. Input or output circuit, per se (i.e., line interface)

420

... For connecting plural subscribers to a network (i.e., network termination)

421

.... Subscribers connected to input or output circuit by a common bus

422

.. Centralized switching

423

... Including a bus for interconnecting inputs and outputs

424

.... Including a ring or loop for interconnecting inputs and outputs

425

... Star configuration

426

... Having a signaling feature

427

.. Space switching

428

. Store and forward

429

.. Particular storing and queuing arrangement

430

. FDM switching

431

CHANNEL ASSIGNMENT TECHNIQUES

432

. Messages addressed to multiple destinations

433

. Only active channels transmitted

434

.. Concentrator

435

... TASI (Time Assignment Speech Interpolation)

436

. Combined time and frequency assignment

437

. Adaptive selection of channel assignment technique

438

. Using a separate control line or bus for access control

439

.. Control line is used to request or reserve access

440

... Dual bus dynamic queuing (i.e., DQDB)

441

. Combining or distributing information via code word channels using multiple access techniques (e.g., CDMA)

442

. Combining or distributing information via time channels using multiple access technique (e.g., TDMA)

443

.. Using channel reservation

444

... With priority resolution

445

. Carrier sense multiple access (CSMA)

446

.. Using a star coupler

447

.. Arbitration for access between contending stations

448

... Using weighted back-off timing

449

. Polling

450

.. Passing a signal identifying the idle or busy state of a channel (e.g., token passing)

451

... On bus

452

.... On ring or loop

453

..... Initialization or reinitialization of network

454

..... Having multiple idle or busy signals simultaneously on the network

455

..... Including priority resolution

456

..... Idle or busy signal erasure or frame erasure

457

... Initialization or reinitialization of network

458

. Using time slots

459

.. Having indication of idle or busy state of time slot

460

... On ring or loop network

461

.. Arbitration for access between contending stations

462

. Arbitration for access to a channel

463

. Details of circuit or interface for connecting user to the network

464

COMMUNICATION TECHNIQUES FOR INFORMATION CARRIED IN PLURAL CHANNELS

465

. Adaptive

466

.. Converting between protocols

467

... Conversion between signaling protocols

468

.. Assignment of variable bandwidth or time period for transmission or reception

469

.. Processing multiple layer protocols

470

.. Frame length

471

... Message having an address header

472

.. Byte length

473

.. Transmission of a single message having multiple packets

474

. Assembly or disassembly of messages having address headers

475

. Address transmitted

476

. Byte assembly and formatting

477

. Transmission bandwidth conservation

478

. Combined time division and frequency division

479

. Combining or distributing information via code word channels

480

. Combining or distributing information via frequency channels

481

.. Multiple frequency translations

482

.. Particular carrier generation

483

.. Using angle modulation

484

.. Digital analysis or synthesis of a group

485

.. Subscriber carrier

486

... Program distribution

487

.... Combined communication of diverse information types

488

... Connecting filters

489

.. Bus (distributed stations)

490

... Combined communication of diverse information types

491

.. Pilot

492

.. Repeater

493

.. Combined voice and data transmission

494

... Data over voice

495

... Data under voice

496

.. Signaling

497

.. Using particular filtering technique

498

. Combining or distributing information via time channels

499

.. Polarity multiplex

500

.. Pilot

501

.. Repeater

502

... Bus extenders

503

.. Synchronizing

504

... Reference indication consists of a gap

505

... Pulse stuffing or deletion

506

.... Frame or bit stream justification

507

... Mutual (reciprocal) synchronization

508

.... Transmission time into time slots adjusted based upon propagation delay time

509

... Using synchronization information contained in a frame

510

.... Synchronization information is distributed over multiple frames

511

..... Using redundant synchronization words

512

.... Synchronization information is distributed within a frame

513

..... Plural synchronization words

514

.... Unique synchronization word or unique bit sequence

515

..... Pseudo-random

516

... Adjusting for phase or jitter

517

.... Including delay device

518

..... Provide plural phases of a clocking signal

519

..... Delay based upon propagation delay time

520

... Unique synchronization pulse

521

.. Time compression or expansion

522

.. Signaling (ancillary to main information)

523

... Using bit robbing

524

... Using a dedicated signaling channel (i.e., D-channel)

525

... Digital tone signal generation

526

... Digital tone detection

527

... Superimposed or modulated on principal information

528

... Inserted in gaps in main information

529

.. Information superimposed on other information

530

.. Staircase wave

531

.. Magnetic core for switching or storage

532

.. Multiplexer or distributor and technique for handling low level input signal

533

.. Multiplexer or distributor using pulse amplitude modulation

534

.. Multiplexer or distributor using electron beam switching device

535

.. Multiplexing combined with demultiplexing

536

.. Demultiplexing single signal into plural parallel channels (e.g., parallel transmission for increasing transmission speed)

537

.. Multiplexing plural input channels to a common output channel

538

... Plural input channels of different rates to a single common rate output channel

539

.... Multiple levels of multiplexing to form a multiplex hierarchy

540

... Plural input channels of same rate to a single common rate output channel

541

.... Multiple levels of multiplexing to form a multiplex hierarchy

542

.. Demultiplexing single input channel to plural output channels

543

... Different rate output channels

544

... Same rate output channels

545

.. Conversion of rate from a single input to a single output

546

MISCELLANEOUS

901

WIDE AREA NETWORK

902

. Packet switching

903

.. OSI Compliant Network

904

... Integrated Services Digital Network (ISDN)

905

... Asynchronous Transfer Mode (ATM)

906

... Fiber Data Distribution Interface (FDDI)

907

... Synchronous Optical network (SONET)

908

LOCAL AREA NETWORK

909

. Token ring

910

. Carrier sense multiple access (e.g., Ethernet, 10Base-T)

911

. Bridge (e.g., brouter, bus extender, etc.)

912

PACKET COMMUNICATIONS

913

. Wireless or radio

914

RATE CONVERTER

915

TIME DIVISION CELLULAR RADIO SYSTEMS

916

MULTIPLEXER/DEMULTIPLEXER

FOR000

CLASS-RELATED FOREIGN DOCUMENTS

FOR100

SIMULTANEOUS TELEGRAPHY AND TELEPHONY (370/125)

FOR101

MULTIPLEX SWITCHING (370/53)

FOR102

. Pathfinding (370/54)

FOR103

. Drop channel (370/55)

FOR104

. Concentrators (370/56)

FOR105

. FDM switching (frequency division multiplexing) (370/57)

FOR106

. TDM switching (time division multiplexing) (370/58.1)

FOR107

.. Control processing (370/58.2)

FOR108

... Distributed (370/58.3)

FOR109

.. T-S (Time-Space) or S-T (370/59)

FOR110

.. Packet or addressed data (370/60)

FOR111

... Combined with circuit-switching (370/60.1)

FOR112

.. Store and forward (370/61)

FOR113

.. Special services with switching (e.g., conference) (370/62)

FOR114

.. TST (Time-Space-Time) (370/63)

FOR115

.. STS (Space-Time-Space) (370/64)

FOR116

.. Folded network (370/65)

FOR117

.. Space stage, per se (370/65.5)

FOR118

.. Time only (370/66)

FOR119

... Bus switch (370/67)

FOR120

.. Time slot interchangers, per se (370/68)

FOR121

.. With signalling feature (370/68.1)

FOR122

FREQUENCY DIVISION (370/69.1)

FOR123

. Multiple frequency translations (370/120)

FOR124

. Carrier generation (370/121)

FOR125

. Angle modulation (370/122)

FOR126

. Filtering techniques (370/123)

FOR127

. Digital analysis or synthesis of group (370/70)

FOR128

. Subscriber carrier (370/71)

FOR129

.. Connecting filters (370/72)

FOR130

.. Program distribution (370/73)

FOR131

. Bus (distributed stations) (370/124)

FOR132

. Pilot (370/74)

FOR133

. Repeaters (370/75)

FOR134

. Signalling (370/76)

FOR135

TIME DIVISION (370/77)

FOR136

. Polarity multiplex (370/78)

FOR137

. Adaptive systems (370/79)

FOR138

.. Only active channels transmitted (370/80)

FOR139

... TASI (Time assigned speech interpolation) (370/81)

FOR140

.. Frame length (370/82)

FOR141

.. Byte length (370/83)

FOR142

.. Rate (370/84)

FOR143

. Bus transmission (370/85.1)

FOR144

.. Contention (370/85.2)

FOR145

... Carrier sense (370/85.3)

FOR146

... Token passing (370/85.4)

FOR147

.... Loop or ring (370/85.5)

FOR148

.. Priority (370/85.6)

FOR149

.. Variable channel assignment (370/85.7)

FOR150

... Polling (370/85.8)

FOR151

.. Plural bus (370/85.9)

FOR152

... With separate control bus (370/85.11)

FOR153

... Loop or ring (370/85.12)

FOR154

... Bridge between bus systems (370/85.13)

FOR155

.... Interconnection between ring or loop (370/85.14)

FOR156

.. Loop or ring (370/85.15)

FOR157

. Asynchronous and nonsynchronous (370/91)

FOR158

.. Address transmitted (370/92)

FOR159

... Multiple access, discrete address (370/93)

FOR160

... Packet (370/94.1)

FOR161

.... Combined with synchronous information (370/94.2)

FOR162

.... Star, tree, or mesh networks (370/94.3)

FOR163

. Variable channel assignment (370/95.1)

FOR164

.. Polling (370/95.2)

FOR165

.. Time division multiple access (370/95.3)

FOR166

. TDM pulse repeater (370/97)

FOR167

. Pilot (370/98)

FOR168

. Byte assembly and formatting (370/99)

FOR169

. Synchronizing (370/100.1)

FOR170

.. Reference indication consists of a gap (370/101)

FOR171

.. Pulse stuffing or deletion (370/102)

FOR172

.. Mutual (reciprocal) synchronization (370/103)

FOR173

.. Moving satelite (370/104.1)

FOR174

.. Distributed (370/105)

FOR175

.. Frame (370/105.1)

FOR176

.. Channel (370/105.2)

FOR177

.. Bit phase or jitter (370/105.3)

FOR178

.. Unique synchronization word (370/105.4)

FOR179

.. Unique sychronization pulse (370/105.5)

FOR180

.. Plural sychronizing words (370/106)

FOR181

.. Pseudo-random (370/107)

FOR182

.. Including delay device (370/108)

FOR183

. Time compression or expansion (370/109)

FOR184

. Signalling (ancilliary to main information) (370/110.1)

FOR185

.. Digital tone signal generation (370/110.2)

FOR186

.. Digital tone detection (370/110.3)

FOR187

.. Superimposed or modulated on principal information (370/110.4)

FOR188

.. Inserted in gaps in main information (370/111)

FOR189

. Multiplexers/distributors (hierarchy and level) (370/112)

FOR190

.. Apparatus and techniques for handling low level input signals (370/113)

FOR191

.. Pulse amplitude modulation (370/114)

FOR192

.. Electron beam switching device (370/115)

FOR193

. Staircase wave (370/116)

FOR194

. Magnetic core for switching or storage (370/117)

FOR195

TRANSMISSION BANDWIDTH CONSERVATION (370/118)

FOR196

MISCELLANEOUS (370/119)

PATHFINDING OR ROUTING

. Switching a message which includes an address header

FOR197

.. Message transmitted using regularly occurring fixed length time intervals (e.g., ATM) (370/395)