Title :
TCP over wireless with differentiated services
Author :
Walingo, Tom ; Takawira, Fambirai
Author_Institution :
Univ. of KwaZulu-Natal, KwaZulu Natal, South Africa
Abstract :
The focus of this paper is to analyze the throughput performance of TCP Tahoe and Reno on a differentiated services network with correlated wireless losses. An analytical model of TCP on a wireless link with differentiated services (DiffServ) based on the packet train model is developed. The network model is based on the state dependent arrival process. A major contribution of this paper is an analytical model combining the performance of TCP throughput and DiffServ leading to a model that represents an almost complete network scenario. It is shown that DiffServ in a wireless channel with correlated error losses is possible if the probability of the channel changing from a good state to a bad state is less than a particular value. It is also shown that TCP Reno has a higher sensitivity to DiffServ than Tahoe. Our analytical model is validated through a number of simulations.
Keywords :
DiffServ networks; Internet; radio links; telecommunication channels; telecommunication services; transport protocols; TCP; assured service; differentiated services network; packet train model; state dependent arrival process; wireless channels; Africa; Analytical models; Bandwidth; Diffserv networks; Error analysis; Performance analysis; Performance loss; Throughput; Transport protocols; Wireless sensor networks; 65; Assured service; RED; RIO; TCP window; differentiated services; wireless channels;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2004.836962