JSE_V1_N3_RP8 Kalpana M. Chandrasekaran M. Journal on Software Engineering 2230 – 7168 1 3 79 84 Wireless Sensor Networks, sensitivity pattern, node distribution, AODV, DSDV, TCP, Routing protocol, Congestion control algorithm, ns2 Distribution of sensor nodes for efficient sensitivity is analysed in this paper for finding out the Routing Protocol along with the Congestion Control Algorithm that could be used in Wireless Sensor Networks. The analysis is performed by the simulation of wireless sensor networks with two different routing protocols used in mobile ad hoc networks AODV and DSDV. The Protocol assumed in the Transmission layer is TCP. Four variants of TCP congestion control are assumed. They are TCP/Tahoe (simply called as TCP), TCP/New Reno, TCP/Vegas and TCP/Fast. The Network is simulated using ns2, the event driven network simulator used by most of the network researchers. Five different node distribution patterns are assumed. Their efficiency is compared by evaluating the throughput in each network topology with a single mobile source node, a fixed base station node and sensor nodes in a distribution pattern. The results show that the sensor nodes if implemented with AODV Routing protocol and TCP/Vegas congestion control algorithm perform more efficiently. January - March 2007 Copyright © 2007 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=994