Opportunistic routing in multi-channel cognitive radio networks

Changliang Zheng*, Eryk Dutkiewicz, Ren Ping Liu, Rein Vesilo, Gengfa Fang, Zheng Zhou

*Corresponding author for this work

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

11 Citations (Scopus)

Abstract

Cognitive radio (CR) is an exciting technology to improve spectrum utilization. However, spectrum availability can change very fast due to primary user's activity, which makes most of existing CR routing protocols fail to work because they are designed for cognitive radio networks (CRNs) with slow variation of spectrum availability. Opportunistic routing is a promising routing paradigm for CRNs with fast variation of spectrum availability. We propose a multi-channel spectrum aware opportunistic routing (MSAOR) algorithm based on link delay analysis. By introducing channel access probability to characterize the opportunistic CR link, access delay is integrated into queuing delay. Our analysis shows that our algorithm achieves a lower link delay than the existing routing algorithm SAOR (spectrum aware opportunistic routing). Our simulation results also show that our MSAOR algorithm can reduce end-to-end delay by up to 50%, can increase the supported offered load by up to 190% and is more robust than SAOR.

Original languageEnglish
Title of host publication11th International Symposium on Communications and Information Technologies, ISCIT 2011
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages532-537
Number of pages6
ISBN (Electronic)9781457712951, 9781457712937
ISBN (Print)9781457712944
DOIs
Publication statusPublished - 2011
Event11th International Symposium on Communications and Information Technologies, ISCIT 2011 - Hangzhou, China
Duration: 12 Oct 201114 Oct 2011

Other

Other11th International Symposium on Communications and Information Technologies, ISCIT 2011
CountryChina
CityHangzhou
Period12/10/1114/10/11

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