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1. (WO2017148445) SYNCHRONIZATION METHOD, NODE DEVICE AND WIRELESS MESH NETWORK SYSTEM

Pub. No.:    WO/2017/148445    International Application No.:    PCT/CN2017/075784
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Tue Mar 07 00:59:59 CET 2017
IPC: H04W 56/00
Applicants: HYTERA COMMUNICATIONS CORPORATION LIMITEDHYTERA COMMUNICATIONS CORPORATION LIMIT
海能达通信股份有限公司
Inventors: LU, Zhibing
鲁志兵
ZHANG, Qingli
张庆利
YU, Qingxiang
余庆祥
SHEN, Qian
沈谦
HU, Jun
胡军
Title: SYNCHRONIZATION METHOD, NODE DEVICE AND WIRELESS MESH NETWORK SYSTEM
Abstract:
The present application relates to a synchronization method and a node device for a wireless MESH network and the wireless MESH network system comprising the node device. According to the method of the present invention, a slave node detects a synchronization signal broadcast by a main node; a frame boundary is acquired locally; and an access signal is sent to a main node. The main node detects the access signal sent by the at least one slave node, estimates corresponding delay information and broadcasting the delay information. The slave node detects the delay information issued by the main node. If the slave node has detected the delay information, then the frame boundary is adjusted according to the delay information, thus realizing the synchronization with the main node. The technical solution of the present application can promote the synchronization performance of a MESH network node.