A Time Synchronization Method Based on the Minimal Average Synchronization Levels of Nodes in Communication Networks

Abstract

The invention discloses a time synchronization method based on minimum node average synchronization level in a communication network, and solves the problem that multi-hop errors and time delays are quickly accumulated along with the synchronization level in the time synchronization process of the communication network. The method comprises the following steps: firstly, calculating minimum synchronization series among all nodes in a communication network, and then calculating average time synchronization series of all the nodes; and selecting the node with the minimum required average time synchronization grade from all the nodes of the communication network as a time reference node of the communication network, and determining the level of each node, and performing time synchronization step by step by taking the time reference node as the zeroth level to complete the time synchronization of the whole network. By selecting the reference node for time synchronization in the communication network, the number of stages required for time synchronization completion of the communication network is reduced, the error and time delay of the whole communication network after time synchronization completion are reduced, and the optimization of the time synchronization performance of the communication network is realized.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a time synchronization method in the communication network based on the minimum average number of synchronization stages of nodes in the technical field of communication network. The invention is based on the time synchronization technology between communication nodes, and realizes a method for optimizing time synchronization performance in a communication network by introducing a time reference point selection technology based on the minimum average synchronization series of nodes. Background technique [0002] The time synchronization of the communication network is based on the basic method of two-way comparison of time synchronization between two points, creating a hierarchical structure according to the network topology, and completing the step-by-step synchronization from the time reference node to other nodes in the entire network. In the hierarchical structure...

AI Technical Summary

Problems solved by technology

The shortcomings of this time synchronization method are that in order to reduce the number of synchronization packets in the network, a clustered time synchronization method is adopted, which lacks further optimal selection of time reference nodes in the communication network, and there is a defect in the selection of time reference points. The number of time synchronization series in the time synchronization process of the communication network cannot be reduced, resulting in the rapid accumulation of multi-hop errors and delays, and the stability and accuracy of time synchronization are low

The steps of the method are as follows: the first step calculates the maximum number of synchronization stages from each node in the communication network to other nodes; The minimum maximum number of synchronization series ensures better time synchronization performance of the entire communication network, but this method still has the disadvantage that the average optimal time synchronization performance of the entire communication network cannot be guaranteed by the minimum average synchronization series of nodes. At the same time, when the time synchronization reference point with the smallest maximum number of synchronization stages is not unique, it is impossible to further optimize the candidate reference point, and the accuracy of time synchronization is also low

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