JWCN_V1_N2_RP5 Karthikeyan S. S. Jayashri Journal On Wireless Communication Networks 2320 - 2351 1 2 32 40 Mobile Agent, DCA, MCA, Data Gathering, Network Lifetime The advancement in wireless communication is achieving a tremendous increase of low cost wireless sensor network. The activities around are sensed from the environment, gathered and transmitted to intended users. This paper focuses for a high efficient data gathering through the agent mobility with routing and event driven mechanism. Here the agent move towards the subhead of the event driven data, replacing the sink mobility and thereby reducing the energy consumption of the network. Based on the data gathering algorithm, the sub head chooses the closest fixed nodes along the path as roots to build a routing tree dynamically. The sub-heads perform data aggregation through direct communication area (DCA) between trajectories L1 and L2, multihop communication area (MCA) and sent to sink reversely by the tree. This paper has used priority based routing in which the sub heads are set with a priority according to which the agent moves. Since the energy consumption is minimized and the network lifetime is improved, the mobile agent-based data gathering protocol is better than others. Added to the agent based data gathering the priority based routing also increases the network lifetime. July - September 2012 Copyright © 2012 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=1943