US 11,757,788 B2
Signal transfer system, signal transfer device, signal transfer method and signal transfer program
Hiroko Nomura, Musashino (JP); Naotaka Shibata, Musashino (JP); Keita Takahashi, Musashino (JP); and Tomoya Hatano, Musashino (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/910,277
Filed by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
PCT Filed Mar. 9, 2020, PCT No. PCT/JP2020/010094
§ 371(c)(1), (2) Date Sep. 8, 2022,
PCT Pub. No. WO2021/181478, PCT Pub. Date Sep. 16, 2021.
Prior Publication US 2023/0120429 A1, Apr. 20, 2023
Int. Cl. H04L 47/62 (2022.01); H04L 47/6275 (2022.01)
CPC H04L 47/6215 (2013.01) [H04L 47/6275 (2013.01)] 7 Claims
OG exemplary drawing
 
3. A signal transfer apparatus forming a network between a distribution station apparatus corresponding to a wireless base station apparatus, a central station apparatus configured to centrally control the wireless base station apparatus, the distribution station apparatus, and the central station apparatus, the signal transfer apparatus comprising:
a signal distribution unit configured to distribute received signals to priority based buffers;
a time gate unit configured to open and close gates for the signals of the buffers according to a command from a scheduler unit;
a signal transfer unit configured to transfer frames output from the gates of the time gate unit to designated output destinations;
a calculation unit configured to, when the signal transfer apparatus is a signal transfer apparatus on an upper side, determine a total amount of network traffic according to mobile scheduling information received from the plurality of signal transfer apparatuses on a lower side and, in response to determining that the total amount of network traffic exceeds transfer capacity of the plurality of signal transfer apparatuses, transmit a timing adjustment request to at least one of a plurality of the signal transfer apparatuses on a lower side, where the signal transfer apparatus on the upper side is located proximate to the central station apparatus and the signal transfer apparatuses on the lower side are located proximate to the distribution station apparatus; and
the scheduler unit configured to, when the signal transfer apparatus is a signal transfer apparatus on the lower side, adjust opening and closing timings of the gates based on the timing adjustment request received from the signal transfer apparatus on the upper side.