End-to-end acknowledgments for indirect TCP over wireless internetworks

TitleEnd-to-end acknowledgments for indirect TCP over wireless internetworks
Publication TypeConference Paper
Year of Publication1997
AuthorsChim, V., and V. C. M. Leung
Conference NameCommunications, Computers and Signal Processing, 1997. '10 Years PACRim 1987-1997 - Networking the Pacific Rim'. 1997 IEEE Pacific Rim Conference on
Pagination774 -777 vol.2
Date Publishedaug.
Keywordsbit error rates, end to end acknowledgments, I-TCP, indirect TCP, Internet, internetworking, land mobile radio, mobile computing, mobile hosts, modified I-TCP, performance evaluation, radio networks, simulation results, TCP, TCP acknowledgments, TCP performance, transport protocols, wireless internetworks, wireless links

The Internet today is evolved from traditional networks made up of fixed hosts and links. Consequently, protocols for Internet communications, such as TCP, are designed to perform well over fixed networks. The next generation Internet will likely incorporate wireless links and mobile hosts. Characteristics of wireless networks such as higher bit error rates and host mobility result in degraded end-to-end TCP performance. Indirect TCP (I-TCP) has been proposed as an alternative to end-to-end TCP to improve performance. However, the protocol violates the end-to-end semantics of TCP acknowledgments. We propose a modification to I-TCP to maintain the end-to-end semantics, by delaying acknowledgments to the sender until correct reception of the corresponding data at the end host TCP receiver is verified. Preliminary simulation results indicate that our modified I-TCP with end-to-end acknowledgments does not compromise the performance gain obtained by I-TCP. Rather, a slight performance increase is seen at low bit error rates


a place of mind, The University of British Columbia

Electrical and Computer Engineering
2332 Main Mall
Vancouver, BC Canada V6T 1Z4
Tel +1.604.822.2872
Fax +1.604.822.5949

Emergency Procedures | Accessibility | Contact UBC | © Copyright 2021 The University of British Columbia