Method and system for synchronizing access node clock of synchronization Mesh network based on channel associated signaling

Abstract

The invention relates to a method and system for synchronizing an access node clock of the synchronization Mesh network based on a channel associated signaling. The method comprises the steps that a Hello greeting package is utilized for achieving fast network access of an AN belonging to a BN / GN; timestamp information of local nodes is recorded at the same time through at least three times of channel associated signaling interaction; a clock drifting value, relative to the BN / GN, of the AN and wireless link transmission delay is calculated, and clock compensation is provided; interaction is carried out regularly or irregularly to achieve long time synchronization of the AN. According to the method, the problems that a role of a host node and a slave node is firstly determined through the spanning tree algorithm in the process of Mesh network synchronization in the prior art, too many service resources are occupied due to the interaction of related information when time for synchronization carried out on the host node and the slave node is shortened, the message data volume of information interaction is not reduced, the synchronization of the AN is achieved not through the information resources of the AN, and the synchronization of the AN depends too much on the host node information resources are solved.

Description

technical field [0001] The present invention relates to a synchronous Mesh network access node clock synchronization method and system based on channel-associated signaling, in particular to a synchronous Mesh network in which a BN / GN node and an AN node interact to realize the clock of the AN node based on channel-associated signaling A synchronization method and a system thereof belong to the technical field of communication. Background technique [0002] Wireless Mesh Network (Wireless Mesh Network) is a high-capacity, high-bandwidth distributed network, which can be regarded as the integration of wireless local area network WLAN and Ad hoc mobile ad hoc network, and gives full play to the advantages of both. [0003] The wireless Mesh network emphasizes the realization of multi-hops (Multi-hops) wireless communication in a wide area. Based on the characteristics of this multi-hops wireless channel, the network system can be set up flexibly and has strong invulnerability....

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that in the wireless Mesh network synchronization process in the prior art, the role of the master-slave node is first determined through the spanning tree algorithm, and the interaction of relevant information when the master-slave node performs time synchronization is reduced, resulting in excessive occupation of business resources , does not reduce the amount of message data for information exchange, does not use the information resources of the access node itself to realize the synchronization of the access nodes, and relies too much on the information resources of the master node, thus providing a synchronous Mesh network based on the path Access node clock synchronization method and system for signaling

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