無線傳感網(wǎng)中基于移動匯聚節(jié)點(diǎn)的節(jié)能路由算法研究
[Abstract]:In recent years, cloud computing technology is becoming more and more popular. With cloud computing technology, wireless sensor networks can support applications from the bottom to the top. Once deployed to the target area, the wireless sensor network can perceive the target area in real time, which is due to the cooperation between nodes in the network. Many fields in real life involve wireless sensor network, such as military field, agriculture field, intelligent medical field and so on. It is difficult to replace or recharge the node energy because of the battery power supply and the constraints of the application environment. Therefore, the efficient use of node energy has become the key point in the design of wireless sensor network routing protocol. In traditional routing protocols, multi-hop communication between nodes and convergent nodes is the most common. However, because the convergent nodes are stationary, the sensors near the convergent nodes need to forward a large number of packets, and the energy of these nodes will be consumed quickly and die prematurely, thus creating so-called "hot nodes". This phenomenon is called an energy hole. In recent years, researchers have proposed the idea of mobile convergence node, which has a remarkable performance in prolonging the network life cycle. Compared with the sensor networks based on fixed convergent nodes, the proposed method can alleviate the problem of thermal nodes and balance the energy consumption of the networks. In this paper, the energy-saving routing algorithm in wireless sensor networks based on mobile convergence nodes is studied to improve the network life cycle. The main work is as follows: (1) this paper summarizes the characteristics of wireless sensor network routing protocols based on mobile convergence nodes and the challenges brought by the introduction of mobile convergence nodes. The routing protocols are divided into three categories according to the mobile characteristics of mobile convergence nodes and are compared and analyzed. The shortcomings of MECA algorithm and PEGASIS algorithm are analyzed, and their shortcomings are improved by combining the advantages of these two algorithms. (2) aiming at the problem of frequent routing reconfiguration caused by converging node movement, MECA algorithm and PEGASIS algorithm are analyzed. This paper proposes a dynamic routing adjustment and energy-saving algorithm based on mobile convergence node. By setting some communication rules to manage the routing adjustment of cluster head nodes, it can realize that the whole network route reconfiguration will not occur every time the convergent node moves. The cluster head rotation mechanism can effectively alleviate the hot node problem and avoid frequent cluster head selection and intra-cluster routing reconstruction. (3) this paper combines clustering algorithm ant colony algorithm and mobile convergence node strategy to further improve the overall performance of the network. Considering the distance between cluster head nodes, the distance heuristic factor in ant colony algorithm is improved, and the global searching ability of the algorithm is improved and applied to wireless sensor networks. It is used to plan the optimal trajectory for convergent nodes to access all cluster heads.
【學(xué)位授予單位】:揚(yáng)州大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TN929.5;TP212.9
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