ABSTRACT
Reliable transport protocols such as TCP are tuned to perform well in traditional networks where
packet losses occur mostly because of congestion. Many applications of wireless sensor networks
are useful only when connected to an external network. Previous research on transport layer
protocols for sensor networks has focused on designing protocols specifically targeted for sensor
networks. The deployment of TCP/IP in sensor networks would, however, enable direct
connection between the sensor network and external TCP/IP networks. In this paper we focus on
the performance of TCP in the context of wireless sensor networks. TCP is known to exhibit poor
performance in wireless environments, both in terms of throughput and energy efficiency. To
overcome these problems we introduce a mechanism called TCP Segment Caching .We show by
simulation that TCP Segment Caching significantly improves TCP Performance so that TCP can
be useful even in wireless sensor
Keywords: Energy Efficiency, Transport Protocol, Wireless Sensor Network