TCP Performance Analysis of CDMA Systems with RLP and MAC Layer Retransmissions

Authors:
H. Lin;S. K. Das
Affiliations:
-;-
Venue:
MASCOTS '02 Proceedings of the 10th IEEE International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems
Year:
2002

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Abstract

Providing Internet services is very important in 3Gnetworks. TCP is the transport layer protocol used bythe majority of the applications on the Internet. Westudied the performance of TCP when utilizing linklayer retransmission (e.g. RLP in IS95 and IS2000)and MAC layer retransmission in CDMA system.There is not much work on how retransmissions inthese layers can work together and how theperformance of TCP with RLP and MACretransmissions would be. In this paper we propose ananalytical model for RLP performance when MACretransmission is presented in this architecture. Wealso studied the performance of TCP based on RLPand MAC with extensive simulation experiments. Westudy in detail the interactions between different layersand characterize the performance using delaydistributions and throughput. Our results showsignificant improvement in TCP performance withMAC layer retransmission. For example, for packetloss rate of 0.1, the TCP packet delay is reduced by20.94%, and throughput is increased by 39.57%.