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1. (WO2018123710) COMMUNICATION SYSTEM, COMMUNICATION METHOD, TRANSFER DEVICE, AND TRANSFER METHOD

Pub. No.:    WO/2018/123710    International Application No.:    PCT/JP2017/045454
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Wed Dec 20 00:59:59 CET 2017
IPC: H04L 12/815
H04L 12/28
H04L 12/873
Applicants: NEC CORPORATION
日本電気株式会社
Inventors: AOKI Yuu
青木 優宇
Title: COMMUNICATION SYSTEM, COMMUNICATION METHOD, TRANSFER DEVICE, AND TRANSFER METHOD
Abstract:
In order that, in a system for notifying an upstream device of a communication band permitted for a communication path to a downstream device, a data transfer from the upstream device is transferred to the downstream device without being stopped and disposal of the data is prevented, a transfer device 10 has a buffer 11 for temporarily storing the data received from a first communication device 20 and transmitted to a second communication device 40, a notification band determination unit 12 for determining band information to be notified to the first communication device 20 on the basis of first information relating to a band usable in a traffic transfer path 50 to the second communication device 40 and second information relating to a band that corresponds to a free space of the buffer 11, and a band notification transmission unit 13 for transmitting the band information to the first communication device 20.