基于TinyOS的无线传感器网络数据汇聚协议研究

Wireless sensor network is an application dependent network with limited energy and computing ability. CTP is a data collection protocol for wireless sensor network based on TinyOS. It adopts Collection tree theory，and sets some sink nodes as tree roots in the network. Each node exchanges the link quality estimates with its neighbor nodes to choose parent node as a next hop. Nodes establish a reliable route to one of the collection roots. This paper analyses the principal and implementation of CTP. A test application is written for simulating the protocol. The simulation result shows that CTP has a good performance of relatively high transmission efficiency in a network with low traffic rates，and is suited to small-scale wireless sensor network for environment monitoring.