Invention Grant
- Patent Title: Communication system, communication apparatus and time synchronization method
- Patent Title (中): 通信系统，通信设备和时间同步方法
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Application No.: US13509305Application Date: 2009-11-11
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Publication No.: US08953645B2Publication Date: 2015-02-10
- Inventor: Kenji Kitayama , Kazuyuki Kashima
- Applicant: Kenji Kitayama , Kazuyuki Kashima
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- International Application: PCT/JP2009/069209 WO 20091111
- International Announcement: WO2011/058625 WO 20110519
- Main IPC: H04J3/06
- IPC: H04J3/06 ; H04L12/403 ; H04L12/413 ; H04L12/42
Abstract:
A communication system that is constituted by a plurality of communication apparatuses, and performs time synchronization using a time synchronization frame, wherein one of the communication apparatuses is set as a starting point node, at least one of the communication apparatuses is set as a terminal point node, the starting point node generates a time synchronization frame in an outward-route direction and transmits the generated time synchronization frame in the outward-route direction, the terminal point node generates a time synchronization frame in a return-route direction and transmits the generated time synchronization frame in the return-route direction, and an intermediate node relays a received time synchronization frame when receiving a time synchronization frame transmitted in an outward-route direction and a return-route direction.
Public/Granted literature
- US20120224492A1 COMMUNICATION SYSTEM, COMMUNICATION APPARATUS AND TIME SYNCHRONIZATION METHOD Public/Granted day:2012-09-06
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