Optimization Method of Clock Synchronization of Nodes in Delay-compensated Downlink Communication Network

In the process of improving the performance of carrier communication networks, the ATS algorithm (average time synchronization algorithm) is usually used to optimize the clock synchronization of network nodes, ignoring the impact of communication delay between nodes, resulting in significant node synchronization errors after optimization. Therefore, a delay compensation download wave communication network node clock synchronization optimization method is proposed. Clarify the distribution of nodes within the communication network, and introduce the triangulation idea to achieve reasonable node connections and obtain the topology structure of the carrier communication network. Establish a time information interaction model that includes master and slave nodes, and estimate the clock drift and clock offset quantization values of network nodes. Provide the local clock corresponding to each node, and construct a synchronization communication model based on delay compensation. With the assistance of the reference node, complete the synchronization adjustment of the node clock. Finally, after identifying the identities of all reference nodes and neighboring nodes in the network, the joint synchronization optimization of multiple regional nodes in the entire network is achieved by exchanging synchronization information with each other. The experimental results show that after synchronization optimization processing, the average synchronization error of the carrier communication network nodes is less than 100 μs, greatly improving the network performance.