Title:
通信システム、及び通信方法
Document Type and Number:
Japanese Patent JP6696879
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To efficiently use a band by avoiding redundant transmission of data having the same content.SOLUTION: A communication system includes: a plurality of subscriber side optical line terminal devices to which terminal devices are connected; and an office side optical line terminal device connected to the subscriber side optical line terminal devices by a multiplex distributor. When a terminal device connected to any subscriber side optical line terminal device transmits a distribution request signal for requesting reception of data from the outside; the office side optical line terminal device, if the office side optical line terminal device is transmitting data having the same content as that of the data to another terminal device, transmits the data during the transmission as broadcast distribution to the multiplex distributor without transmitting data corresponding to the distribution request signal. When receiving data transmitted using broadcast distribution from the multiplex distributor, the subscriber side optical line terminal device to which the terminal device, a transmission source of the distribution request signal, is connected replaces a destination of the received data with a terminal address of the terminal device of the transmission source of the distribution request signal before transmitting the received data.SELECTED DRAWING: Figure 1
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Inventors:
Kasahara Yasunobu
Tomonori Sugawa
Tomohiro Taniguchi
Toshihisa Fujiwara
Tomonori Sugawa
Tomohiro Taniguchi
Toshihisa Fujiwara
Application Number:
JP2016203932A
Publication Date:
May 20, 2020
Filing Date:
October 17, 2016
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04L45/16; H04L12/44
Domestic Patent References:
| JP2006101259A | ||||
| JP2007306190A | ||||
| JP2003309601A | ||||
| JP2016174275A |
Attorney, Agent or Firm:
Shiga International Patent Office