基于功率控制的WSN跨層優(yōu)化關(guān)鍵技術(shù)研究
[Abstract]:Wireless Sensor Network (WSN) is an information monitoring network that collects, processes and transmits information. Traditional WSN can not satisfy the higher and higher application requirements because of its ability to transmit and process information. It often leads to information redundancy and network energy consumption. Network performance optimization is used to speed up network processing and improve network throughput. Cross-layer optimization technology is to use integrated protocol stack to regard the relatively independent layer of protocol stack as a whole, realize network information sharing, speed up information processing, avoid network congestion, prolong network life cycle and so on. As the MAC layer and the network layer in WSN mainly complete the functions of conflict detection, channel resource allocation, path selection and information transmission, and so on, the energy consumption is large, so this paper starts from the MAC layer and the network layer, focuses on the research of cross-layer optimization technology suitable for the two layers, and designs a power-based design. Power Channel Stable Clustering (PCSC) can avoid network congestion and save network energy. The main results are as follows: Firstly, due to the independence of MAC layer and network layer in the traditional WSN hierarchical structure, it can not realize resource sharing, which easily leads to low throughput and excessive energy consumption. This paper designs a protocol stack model that connects MAC layer and network layer by pipeline, establishes a direct information channel, guarantees fast and accurate information and saves energy. On this basis, a PCSC algorithm combining MAC layer power mechanism with network layer routing algorithm is designed. Secondly, aiming at the problem of information collision or delay caused by low channel utilization rate, the network with high time requirement usually does not adopt the channel strategy with low utilization rate such as single channel transmission. Therefore, this paper designs a dual-channel strategy for node transmission, that is, data channel and control channel exist, two kinds of information are transmitted simultaneously. Finally, the PCSC algorithm proposed in this paper is tested by MATLAB simulation tool. The test results show that compared with other clustering algorithms, PCSC algorithm can improve the network throughput, save network energy and prolong the network life cycle.
【學(xué)位授予單位】:沈陽理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TP212.9;TN929.5
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