Wireless sensor network clustering method based on initiative avoidance of hotspots and NLOS

Abstract

The invention discloses a wireless sensor network clustering method based on initiative avoidance of hotspots and NLOS. The wireless sensor network clustering method comprises the following steps that firstly, a network is initialized, secondly, middleware of an upper computer builds a WSN environmental model, thirdly, the middleware of the upper computer analyzes analog information, and fourthly, cluster heads change in an operating period. According to the wireless sensor network clustering method, by means of regulation and control performed by the middleware of the upper computer connected to a base station, the overall life cycle of the WSN is improved and prolonged, and overall expandability and controllability of the network can be enhanced; as nodes in areas which can lead to cavities are bypassed, durability of the covering radius of the network is enhanced, and the hotspot effect is avoided. Besides, the nodes can be added or moved or abandoned randomly, and compared with traditional algorithms, the wireless sensor network clustering method achieves that the expandability is greatly enhanced. As for the wireless sensor network clustering method, most of the traditional algorithms belong to passive cluster head self-election algorithms. In addition, the wireless sensor network clustering method reduces loads of a routing list, simplifies the routing list, and prolongs the overall service life of the network.

Description

technical field [0001] The invention belongs to the technical field of clustering of wireless sensor network routing, in particular to a wireless sensor network clustering method based on actively avoiding hot spots and NLOS. Background technique [0002] The sensor nodes in WSN (Wireless Sensor Networks) are generally powered by batteries with very limited energy, and basically cannot replenish energy after deployment, so there is a serious energy constraint problem in the WSN network Therefore, the primary goal of WSN network protocol design is to efficiently use the energy of each sensor node, thereby prolonging the survival time of network nodes. This multidisciplinary research direction has always been a hot issue in this field. . [0003] In a wireless sensor network with a cluster structure, each node in the network is divided into cluster areas according to the area range, and each cluster is generally composed of a cluster head node (CH) and multiple member nodes (...

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a wireless sensor network clustering method based on actively avoiding hot spots and NLOS,

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