NDLI: Rate-Based Channel Assignment Algorithm for Multi-Channel Multi-Rate Wireless Mesh Networks

Content Provider	IEEE Xplore Digital Library
Author	Sok-Hyong Kim Young-Joo Suh
Copyright Year	2008
Description	Author affiliation: Dept. of Comput. Sci. & Eng., Pohang Univ. of Sci. & Technol., Pohang (Sok-Hyong Kim; Young-Joo Suh)
Abstract	Wireless Mesh Networks (WMNs) support the cost-effective broadband access for Internet users. Although today's IEEE 802.11 PHY and MAC specifications provide multi-channel and multi-rate capabilities, exploiting available channels and data rates is a critical issue to guarantee high network performance. In multi-rate wireless networks, high-rate links heavily suffer from performance degradation due to the presence of low-rate links. This problem is often referred to as performance anomaly. In this paper, we propose a Rate-Based Channel Assignment (RB-CA) algorithm to alleviate performance anomaly in multi-channel multi-rate WMNs. By exploiting multiple channels, the proposed algorithm alters a low-rate single-hop path to a high-rate multi-hop path. With RB-CA, a large volume of traffics in WMNs can be simultaneously delivered from or to the Internet via multiple non-overlapping channels as well as high-rate links. Extensive ns-2 simulation experiments have been performed to evaluate the performance of RB-CA and compared it with the existing WMN architecture. Our simulation results show that RB-CA outperforms existing scheme in terms of packet delivery ratio and end-to-end delay.
Starting Page	1
Ending Page	5
File Size	275827
Page Count	5
File Format	PDF
ISBN	9781424423248
ISSN	1930529X
DOI	10.1109/GLOCOM.2008.ECP.125
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-11-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless mesh networks Internet IP networks Degradation Computer science Physical layer Traffic control Performance evaluation Delay Next generation networking
Content Type	Text
Resource Type	Article

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