关键词: 无线传感器网络, LEACH协议, 生物免疫原理, 状态转换

Abstract: The low energy adaptive clustering hierarchy （LEACH） protocol is one of the early and integrated wireless sensor network protocols. Based on the LEACH， a new kind of immune architecture using the biological immunity principle is proposed， which can be used in wireless sensor network （WSN）. In order to build this architecture， the backup cluster head election algorithm is also proposed based on coverage， the immune response algorithm with embedded digital genes and the conversion mechanisms for state nodes. The introduction of backup cluster head reduces the damage of the entire cluster caused by malicious cluster head. Through the cooperation of each function node， the immune response algorithm can defend against the intrusion from the malicious node and minimize the influence of malevolence data. The simulation validates the effectiveness of the architecture that it doesn’t reduce the network lifetime and meanwhile improves the security.

Key words: wireless sensor network （WSN）, low energy adaptive clustering hierarchy （LEACH） protocol, biolo-gical immune principle, state transition