Node performance model of wireless sensor networks

The communication system of intelligence vehicle platform is consisted of a series of wireless communicators which is formed like wireless sensor network (WSN). Each of the vehicles behaves like a sensor in the WSN. The status data of the environment and the vehicle have been gathered and transmitted to a certain sink, another vehicle or the control center. So the quality-of-service (QoS) of the network should be guaranteed to ensure the reliability of the whole platform. The transmission path is consisted with nodes. The nodes´ performance directly influence the performance of the network. This paper is established models of the nodes and packet behavior during the transmission. Data loss possibility and the delay can be reflected from the models. The result can provide a reference for the estimation of the reliability of the control system based on the WSN such as intelligence vehicle platform.