A new reliable transmission protocol for wireless sensor network

Wireless sensor network (WSN) is a data-centric intelligent monitoring system and data transmission is the routine task. For the communication resource of WSN is very limited is most pivotal function, communication reliability becomes one of the most pivotal factors. However, the lack of wireless link and the loss of data make the study of communication reliability hardly. To solve these problems, a nodes cooperation based multi-path transmission protocol (NCMPT) is proposed in this paper. In this protocol, network is divided into several hierarchy areas, and a clustering construction mechanism is studied to take the amount of nodes in each clustering to meet the requirement of reliable transmission. On this basis, the selection strategy of optimal intermediate node is designed. Furthermore, a supporting data relay clustering of nodes is constructed, and the nodes cooperation based data synchronized reception scheme and asynchronized competition relaying scheme is studied to enables the end-to-end data transmission to be more reliable and accurate. To testify the performance of proposed protocol, a simulation experiment is designed, and the results show the proposed protocol can get improvement in communication reliability and time-delay.