Article,

Improving Performance of TCP in Wireless Environment using TCP-P

, and .
ACEEE International Journal of Communications, 4 (1): 9 (July 2013)

Abstract

Improving the performance of the transmission control protocol (TCP) in wireless environment has been an active research area. Main reason behind performance degradation of TCP is not having ability to detect actual reason of packet losses in wireless environment. In this paper, we are providing a simulation results for TCP-P (TCP-Performance). TCP-P is intelligent protocol in wireless environment which is able to distinguish actual reasons for packet losses and applies an appropriate solution to packet loss. TCP-P deals with main three issues, Congestion in network, Disconnection in network and random packet losses. TCP-P consists of Congestion avoidance algorithm and Disconnection detection algorithm with some changes in TCP header part. If congestion is occurring in network then congestion avoidance algorithm is applied. In congestion avoidance algorithm, TCP-P calculates number of sending packets and receiving acknowledgements and accordingly set a sending buffer value, so that it can prevent system from happening congestion. In disconnection detection algorithm, TCP-P senses medium continuously to detect a happening disconnection in network. TCP-P modifies header of TCP packet so that loss packet can itself notify sender that it is lost.This paper describes the design of TCP-P, and presents results from experiments using the NS-2 network simulator. Results from simulations show that TCP-P is 4% more efficient than TCP-Tahoe, 5% more efficient than TCP-Vegas, 7% more efficient than TCP-Sack and equally efficient in performance as of TCP-Reno and TCP-New Reno. But we can say TCP-P is more efficient than TCP-Reno and TCP-New Reno since it is able to solve more issues of TCP in wireless environment.

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