关键词: 无线传感器网络, 多指标, 自适应, 熵, 服务质量, 路由

Abstract: Concerning the different QoS requirements in different services and the realtime change of QoS indicators during the networks operation, an Entropybased Adaptive QoS Routing (EAQR) algorithm for wireless sensor networks was proposed. In EAQR, the routing establishment process was abstracted as multiindex weighted mark problems, nodes load, average energy potential, as well as timedelay were selected as QoS evaluation indexes, index weights were adaptively determined by the method of entropy, and then a sensor node could choose an optimal node to relay the data. The simulation results show that compared with the algorithms of Sequential Assignment Routing (SAR) and Energyaware QoS Routing(EQR), EAQR algorithm can effectively reduce the average endtoend delay, decrease the packet loss, and prolong the network lifetime.

Key words: Wireless Sensor Network (WSN), multiindex, selfadaptive, entropy, Quality of Service (QoS), routing