NDLI: An enhancement of multicast congestion control over hybrid wired/wireless networks

Content Provider	IEEE Xplore Digital Library
Author	Yan Liu Cheng Peng Fu Zong Kai Yang Bu Sung Lee
Copyright Year	2004
Description	Author affiliation: Huazhong Univ. of Sci. & Technol., Wuhan, China (Yan Liu)
Abstract	In wireless networks, random loss due to bit error leads to significant performance degradation to conventional multicast congestion control schemes. In this paper, we propose and study an enhanced multicast congestion control scheme, called EPGMCC (enhanced PGMCC), which achieves significant performance improvement over PGMCC over loss-prone wireless links. The key idea of EPGMCC is to discriminate random loss from congestion loss according to the measured network congestion level, and perform different actions accordingly. Specifically: 1) at the sender, it adapts the AIMD algorithms in TCP Veno (Cheng Peng Fu et al., 2003) to avoid the unnecessary window-halving induced by random loss and 2) at the receiver, a new scheme is designed to better measure the loss rate and thus help the sender to select the right representative of the group. Our extensive simulation results demonstrate that EPGMCC achieves significant throughput improvement over PGMCC in hybrid wired/wireless networks, furthermore, the improved throughput achieved by EPGMCC is not grabbed from the bandwidth of coexisting connections but from the utilization of available bandwidth that left unused. Throughput improvement of up to 40% can be demonstrated over typical wireless access link with 1% random loss rate.
Starting Page	2563
Ending Page	2568
File Size	467311
Page Count	6
File Format	PDF
ISBN	0780383443
ISSN	15253511
DOI	10.1109/WCNC.2004.1311492
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-03-21
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless networks Multicast protocols Performance loss Degradation Loss measurement Throughput Transport protocols Error correction Bandwidth Wireless LAN
Content Type	Text
Resource Type	Article

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