By Topic

A Cross-layer Approach to Enhance TCP Fairness in Wireless Ad-hoc Networks

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
G. Boggia ; DEE - Politecnico di Bari, Via E. Orabona, 4 - 70125 Bari (Italy) Email: g.boggia@poliba.it ; P. Camarda ; L. A. Grieco ; T. Mastrocristino
more authors

Wireless ad-hoc networks represent an emerging technology, well suited for providing temporary network connectivity where a wired infrastructure cannot be easily set up. The very popular 802.11 standard enables wireless ad-hoc networking, using the distributed coordination function (DCF) for multiple access to the shared radio channel. Unfortunately, the interaction between TCP dynamics, driven by the additive increase multiplicative decrease (AIMD) paradigm, and DCF channel access rules, which are based on the carrier sense multiple access with collision avoidance (CSMA/CA) algorithm, leads to an inefficient spatial channel usage. As a consequence, 802.11 ad-hoc networks provide an unfair service to TCP flows. In order to achieve a reasonable trade-off between throughput and fairness, this paper proposes a cross-layer algorithm that dynamically limits the number of in flight segments in a TCP connection by taking into account measurements of frame collision probability, collected at the MAC layer along the path. Performance of the proposed algorithm have been evaluated by ns-2 simulations; results have shown that the developed cross-layer scheme provides the same goodput, improves fairness in bandwidth sharing, and reduces segment retransmission ratios with respect to the standard TCP over 802.11 MAC

Published in:

2005 2nd International Symposium on Wireless Communication Systems

Date of Conference:

7-7 Sept. 2005