Channel-hopping based on available channel set for rendezvous of cognitive radios

Lu Yu, Hai LIU, Yiu Wing LEUNG, Xiaowen CHU, Zhiyong Lin

Research output: Chapter in book/report/conference proceedingConference contributionpeer-review

15 Citations (Scopus)

Abstract

Rendezvous is a necessary operation for cognitive users to establish communication links in cognitive radio networks (CRNs). To guarantee the rendezvous in finite time, all existing rendezvous algorithms generate CH (channel-hopping) sequences using the whole channel set and attempt rendezvous on each of the channels (i.e., both available channels and unavailable channels). In practice, the available channel set is usually a small portion of the whole channel set due to dynamics of channel availabilities and limited sensing capabilities of cognitive users. Thus, the CH sequences using the whole channel set may attempt unnecessary rendezvous in uncertain channels (e.g., unavailable channels or randomly-selected channels) which greatly degrades the performance. In this study, we propose a new rendezvous algorithm that generates channel-hopping sequences based on available channel set (CSAC) for more efficient rendezvous. We prove that CSAC gives guaranteed rendezvous and derive its upper-bound on maximum time-to-rendezvous (MTTR) which is an expression of the number of available channels instead of the number of all potential channels. To the best of our knowledge, CSAC is the first one in the literature that exploits the only available channels in designing CH sequences while providing guaranteed rendezvous. Experimental results show that CSAC can significantly improve the MTTR compared to state-of-the-art.

Original languageEnglish
Title of host publication2014 IEEE International Conference on Communications, ICC 2014
PublisherIEEE Computer Society
Pages1573-1579
Number of pages7
ISBN (Print)9781479920037
DOIs
Publication statusPublished - 2014
Event2014 1st IEEE International Conference on Communications, ICC 2014 - Sydney, NSW, Australia
Duration: 10 Jun 201414 Jun 2014

Publication series

Name2014 IEEE International Conference on Communications, ICC 2014

Conference

Conference2014 1st IEEE International Conference on Communications, ICC 2014
Country/TerritoryAustralia
CitySydney, NSW
Period10/06/1414/06/14

Scopus Subject Areas

  • Computer Networks and Communications

User-Defined Keywords

  • channel hopping
  • cognitive radio
  • rendezvous

Fingerprint

Dive into the research topics of 'Channel-hopping based on available channel set for rendezvous of cognitive radios'. Together they form a unique fingerprint.

Cite this