Research Of Lifetime Based On Cirque Model In Wireless Sensor Networks

Wireless sensor network, which aimed at apperceiving,gathering and processing of information in network area and meanwhile sending to observers, is a multi-hop ad hoc network system that is formed by a large number of sensor nodes via wireless communication. It has high research value and very expansive application foreground, thus academe and industrialists pay high attention to it. Since sensors have significant power constraints, and the radio transceiver typically consumes more energy than any other hardware component onboard a sensor node, design of energy efficient communication protocols is of great importance.First of all in this paper, the research status of WSN, the communication protocol architecture, and the characteristics and application area of WSN are summarized. Then we give the classification of the routing protocols for WSN and summarize the characteristic of routing protocols.This paper analysises node energy consumes in different cirque under single-hop and multi-hop communication methods. And then it advances a communication mode of two-hop and a routing algorithm based on time division striking up to such foundation. Nodes adopt single-hop,multi-hop and two-hop respectively in different time slices in order to balance node energy consumes in different cirque, and consequently prolong the network lifetime.As node energy consumes in different cirque are not balanced, the paper advance a non-uniform node deployment algorithm. To think over that nodes near base station need afford data transmitting task of peripheral nodes and more energy consume, more nodes are arranged in the area near base station, and meanwhile network lifetime is prolonged by overcast dispatching.Cluster technique can prolong WSN lifetime efficiently, but non-balanced energy consume is also existed in ordinary cluster algorithm. So an unequal clustering clustering algorithm which balanced cluster heads energy consume of different locations by setting cluster scales is brought forward to prolong network lifecycle. Analytical results demonstrate that routing algorithm based on time division, non-uniform node deployment algorithm and unequal clustering algorithm can balance node energy consume in different cirque and prolong the network lifetime efficiently.