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Cross-layer design to improve wireless TCP performance with link-layer adaptation

Research output: Chapter in Book/Report/Conference proceedingConference paper

Original languageEnglish
Title of host publication2007 IEEE 66th Vehicular Technology Conference
Place of PublicationPiscataway, N.J
Pages1504 - 1508
Number of pages5
ISBN (Print)9781424402632
Publication statusPublished - 2007
Event66th IEEE Vehicular Technology Conference - Baltimore, Moldova, Republic of
Duration: 30 Sep 20073 Oct 2007

Publication series

NameIEEE VTS Vehicular Technology Conference Proceedings
ISSN (Print)1090-3038


Conference66th IEEE Vehicular Technology Conference
CountryMoldova, Republic of

King's Authors


Transmission Control Protocol (TCP), the almost universally used reliable transport protocol in the Internet, has been engineered to perform well in wired networks where packet loss is mainly due to congestion. TCP throughput, however, degrades over wireless links, which are characterized by a high and greatly varying bit error rate and by intermittent connectivity. Over such wireless links, the performance achieved by TCP can be improved through the use of cross-layer algorithms at the link-level, which interact with the TCP state machine. In this paper, a TCP-aware dynamic ARQ algorithm is therefore proposed, which utilizes TCP timing information to prioritize ARQ packet retransmissions. Numerical investigation of the proposed algorithm demonstrates the performance improvements that can be attained through this approach, in comparison with TCP-agnostic link-layer approaches.

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