A Extended DCCP Congestion Control in Wireless Sensor Networks

Transmission control protocol (TCP) is a reliable, end-to-end transport protocol, which is widely used for data services and is very efficient for wired networks. However, experiments and research showed that TCP´s congestion control algorithm performs very poorly over wireless sensor networks with degraded throughputs. This paper studies TCP´s throughput issues in wireless sensor networks, and designs an improved congestion control algorithm based on the characteristics of the wireless sensor networks. The protocol is designed as extension to DCCP (datagram congestion control protocol) with a new congestion control component. We also implemented this congestion control algorithm in NS2.Simulation results show improvements on throughput achieved by using Extended congestion control algorithm.