A Multi-path Transmission Method for Wireless Sensor Network Based on Network Coding

How to ensure high quality multi-path transmission is of great importance for wireless sensor network, hence, in this paper, we propose a novel multi-path transmission method based on network coding. Wireless sensor networks are made up of three types nodes, among which the base station records the data of each cluster from the gateways, and the sensor can collect data from external environment. Afterwards, wireless sensors receive information from the gateway, and send it to neighbor nodes. Afterwards, we propose a novel multi-path transmission model for wireless sensor network, which is represented as a directed hypergraph. To solve the issue of packet loss which is obtained by the high bit error rate, the actual number of packets transmitted by the source node is obtained. Then, we calculate the times of network coding, and the group numbers is randomly selected by the source code from the sensing area. Finally, the proposed algorithm can achieve lower transmission cost, energy consumption and time cost than other methods.