关键词: 无线传感器网络，普适计算，消息分发，虚拟网格

Abstract: In the pervasive computing environment based on wireless sensor networks,as a result of nodes moving,the message distribution mechanism is no longer applicable.After analyzing the distribution of message influencing factors,it was found that the virtual grid can be used as the shortest path for message distribution.In the article,the new problems were also discussed that this mechanism will face when the source node moves.Therefore with simulation analysis,the feasibility of the distribution mechanism proposed by this paper was verified.

Key words: Wireless sensor networks, Pervasive computing, Message distribution, Virtual grid