A diagnosis-based soft vertical handoff mechanism for TCP performance improvement

Tong Shu*, Min Liu, Zhongcheng Li, Anfu Zhou

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

Most existing soft handoff approaches lead to plenty of out-of-order packets during downward vertical handoffs (VHOs). We have presented a soft VHO scheme, called SHORDER, to avoid packet reordering caused by downward VHOs. In this paper, we analyze the effects of our SHORDER scheme and another typical existing soft VHO method on the handoff latency and the received data size during a downward VHO for TCP applications. Then, we approximately derive the applicable conditions of the two approaches, and further propose a diagnosis-based soft vertical handoff (DSVH) mechanism which can self-adaptively deal with reordering packets. The mechanism has practical advantages of no changes to correspondent nodes and compatibility with various enhanced TCP variants. With numerical analysis and test-bed experiments, we show that the DSVH mechanism has better performance than the SHORDER scheme and the typical existing method. Furthermore, experimental and analytical results are consistent with each other.

Original languageEnglish
Title of host publication2010 Proceedings of 19th International Conference on Computer Communications and Networks, ICCCN 2010
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-6
Number of pages6
ISBN (Print)9781424471164
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event2010 19th International Conference on Computer Communications and Networks, ICCCN 2010 - Zurich, Switzerland
Duration: 2 Aug 20105 Aug 2010

Other

Other2010 19th International Conference on Computer Communications and Networks, ICCCN 2010
CountrySwitzerland
CityZurich
Period2/08/105/08/10

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