关键词: 无线传感器网络, 簇, 接收信号强度, 组网

Abstract: Limited by application and node structure，wireless sensor networks call for low-cost and low-complexity algorithms.Therefore，a Received-signal-strength-indicator-based distributed network Organization Protocol（RSSIOP） is presented，in which no position information of any sensor node is needed.By receiving the control message transmitted by the base station equipped directional antenna the sensor node completed localization and clustering.According to the residual energy and the received signal strength，the cluster head was elected in each cluster，and the direct links were set up.According to the received signal strength each cluster member selected its own data relay node，and the data relay links were set up.Depending on the delay requirements specified by the users or applications，the cluster members selected either the direct links or the data relay links automatically to forward data to their cluster heads.Moreover，RSSIOP designed two methods for localized rotation of cluster heads and the management of dead nodes.The RSSIOP can reduce transmitting power and alleviate cluster heads’ workload in data receiving and fusing greatly.The simulation results under different scenes testified the validity of RSSIOP.

Key words: wireless sensor network, cluster, received signal strength indicator, network organization