Rate-loss based channel assignment in multi-rate wireless mesh networks

Ching-Ju Lin, Sz Ting Shen, Cheng Fu Chou

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations


Recently, much attention has been paid to the problem of how to efficiently utilize multiple orthogonal channels and communication radios to enhance the aggregate throughput of a Wireless Mesh Network (WMN). Most of prior works on the channel assignment problem assume that all transmission links can only transmit at the base rate and do not consider the presence of multiple bit-rates. However, in a multi-rate environment, the achievable throughput of a high-rate link is critically affected by neighboring low-rate links when they share the same channel. This problem is called performance anomaly [1]. To cope with the problem, we propose a Rate-Loss function, which is a quantitative metric used to evaluate how critical the performance anomaly problem occurred in each orthogonal channel. In addition, we present a distributed Rate-Loss based Channel Assignment (RL-CA), which enables each router to select channels suffering from the slightest performance anomaly problem in a distributed manner. The simulation results show that RL-CA outperforms existing schemes and can adapt to network dynamics efficiently.

Original languageEnglish
Title of host publication2010 IEEE 71st Vehicular Technology
StatePublished - 30 Jul 2010
Event2010 IEEE 71st Vehicular Technology Conference, VTC 2010-Spring - Taipei, Taiwan
Duration: 16 May 201019 May 2010

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252


Conference2010 IEEE 71st Vehicular Technology Conference, VTC 2010-Spring

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