Research Of Multi-Path Routing In Wireless Sensor Networks

With multi-hop wireless sensor networks continuing to be welcomed by the practical application, effective and timely data transmission has become a hot topic in the network. Therefore, in recent years, with the development of wireless sensor networks, the study of routing protocol has been more and more important. Due to the nature and particularity of the wireless sensor networks, multi-path routing in wireless sensor networks have been widely used. Multi-path routing protocols solve the issues of limitation and application-specified in wireless sensor networks. Therefore, it is a primary question to improve the QoS when studying the multi-path routing protocol. Similarly, when sink node moves, it may reach out of the range that the node can be transmitted, causing the failure of node routing table path. Then the node need to rediscover the route. In this situation, when the sensor node needs to transmit data to Sink node, it may lead to packet transmission delay or lost because of no available path.With profound studying of AOMDV protocol, the paper analyze and compare the performance of end-end delay, network frequency and route discovery packet transmission rate. Modify the route discovery algorithm combining the characteristics and application scenarios of wireless sensor networks. When routing discovery, considering the number of nodes receive and transmit packets to choose the best path to improve network performance. These two parameters can effectively reflect the network status of transmission and node energy consumption. When Sink node moves, it will affect the route discovery frequency, which can use agent mechanism to solve this issue. The paper use NS2to verify the improved algorithm and protocol and analyze the results of the simulation protocol. Use end-end delay, network route discovery frequency and packet transmission rate as a measure of the standard. Experimental results show mat the improved protocol is better than the original protocol in the three metrics. This paper demonstrates the algorithm of improved protocol is effective and available.