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756 IEEE/ACM TRANSACTIONS ON NETWORKING, VOL. 5, NO. 6, DECEMBER 1997 A Comparison of Mechanisms for Improving
 

Summary: 756 IEEE/ACM TRANSACTIONS ON NETWORKING, VOL. 5, NO. 6, DECEMBER 1997
A Comparison of Mechanisms for Improving
TCP Performance over Wireless Links
Hari Balakrishnan, Student Member, IEEE, Venkata N. Padmanabhan, Student Member, IEEE,
Srinivasan Seshan, and Randy H. Katz, Fellow, IEEE
Abstract--Reliable transport protocols such as TCP are tuned
to perform well in traditional networks where packet losses occur
mostly because of congestion. However, networks with wireless
and other lossy links also suffer from significant losses due to
bit errors and handoffs. TCP responds to all losses by invok-
ing congestion control and avoidance algorithms, resulting in
degraded end-to-end performance in wireless and lossy systems.
In this paper, we compare several schemes designed to improve
the performance of TCP in such networks. We classify these
schemes into three broad categories: end-to-end protocols, where
loss recovery is performed by the sender; link-layer protocols
that provide local reliability; and split-connection protocols that
break the end-to-end connection into two parts at the base
station. We present the results of several experiments performed
in both LAN and WAN environments, using throughput and

  

Source: Akella, Aditya - Department of Computer Sciences, University of Wisconsin at Madison

 

Collections: Computer Technologies and Information Sciences