A wireless sensor network data aggregation method

Abstract

The invention discloses a data aggregation method of a wireless sensor network. The data aggregation method comprises a path searching stage and a data aggregation stage, wherein the path searching stage is realized in an MAC (Media Access Control) layer, firstly a path searching beacon frame is initiated from a base station, each transfer node establishes an NHBT (Next-Hop Binding Table) per se by use of the receiving, reconstruction and resending process of the beacon frame, hop-by-hop searching is performed by taking hop count as an evaluating indicator so as to obtain a next-hop transfer node which has the shortest distance from the base station, so that the shortest path from each source node to the base station is reversely inquired; the data aggregation stage is as follows: each source node selects one shortest path from multiple shortest paths occurring in the path searching stage by utilizing the load balancing theory so as to transfer perception data to the base station. The data aggregation method disclosed by the invention has the effects and advantages of optimal path, concise calculation, small node storage table, less communication traffic and no loop.

Description

technical field [0001] The invention relates to the field of wireless network and mobile computing, in particular to a data aggregation method of a wireless sensor network. Background technique [0002] In recent years, the information collection and monitoring technology in the field of wireless sensor network (WSN) has received extensive attention from academia and industry. It has broad application prospects in business and other fields. WSN is generally composed of sensor nodes deployed in the same area. Multiple nodes coordinately monitor the same environmental object or target, and transmit their monitoring data to sink or base station for fusion processing. This process is called data aggregation. In order to prolong the life cycle of sensor networks with limited computing power, limited energy supply, limited storage space, and limited communication capabilities, the main idea of ​​effective data aggregation includes two aspects: one is to select the shortest path t...

AI Technical Summary

Problems solved by technology

It is an anycast protocol, which means that the protocol will try to transmit the message to at least one of any nodes, but this transmission is not guaranteed to be successful

In addition, there is the problem of transmitting to multiple root nodes, and the order of packet arrival is not guaranteed

[0010] To sum up, there is no data aggregation method for wireless sensor networks. The root node sends MAC layer frames hop by hop to construct a spanning tree, and then completes data aggregation.

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