Hierarchical wireless sensor network time synchronization method
A wireless sensor, network time technology, applied in the direction of synchronization device, network topology, wireless communication, etc., can solve the problems of high energy consumption, classical time synchronization algorithm is not well balanced, large storage space and so on
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[0056] Embodiment 1: Refer to the TPSN and RBS synchronization mechanism and combine the maximum likelihood estimation and the least squares method to realize the above time synchronization, with figure 1 It is the wireless sensor network clustering network model of the application environment of the present invention. The nodes in the network are divided into multiple clusters, and each cluster includes a cluster head node and several common nodes, wherein the sink node is responsible for the data transmitted by the cluster head node For fusion and processing, the cluster head node is also responsible for the communication between the cluster and the sink node and task scheduling within the cluster. Generally, ordinary nodes only communicate with the cluster head node of the cluster to which they belong.
[0057] The time synchronization method is divided into two stages, one is the layer discovery and child node collection stage, and the other is the time synchronization stag...
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