A distributed channel assignment protocol for rate separation in wireless mesh networks
SCIE
SCOPUS
- Title
- A distributed channel assignment protocol for rate separation in wireless mesh networks
- Authors
- Kim, SH; Suh, YJ
- Date Issued
- 2010-07-01
- Publisher
- ELSEVIER SCIENCE BV
- 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) protocol to alleviate performance anomaly by using multiple channels in WMNs. RB-CA exploits a new metric, called Prioritized Transmission Time (PIT), in order to form High-rate Multi-channel Paths (HMPs). With HMPs, a large volume of traffics can be simultaneously delivered from or to the Internet via multiple non-overlapping channels as well as high-rate links. Extensive ns-2 simulations and experiments in a real test-bed have been performed to evaluate the performance of RB-CA and then we compared it with a well-known existing WMN architecture. Our simulation and experimental results show that RB-CA achieves improved performance in terms of aggregate throughput, packet delivery ratio, end-to-end delay, and fairness. (C) 2010 Elsevier B.V. All rights reserved.
- Keywords
- Channel assignment; Multi-channel; Multi-rate; Wireless mesh networks; INTERFACE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/25793
- DOI
- 10.1016/J.COMCOM.2010.02.009
- ISSN
- 0140-3664
- Article Type
- Article
- Citation
- COMPUTER COMMUNICATIONS, vol. 33, no. 11, page. 1281 - 1295, 2010-07-01
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