Asynchronous Quorum-Based Blind Rendezvous Schemes for Cognitive Radio Networks

Jang Ping Sheu, Chih Wei Su, Guey Yun Chang

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


In cognitive radio networks, unlicensed users [secondary users (SU)] need to rendezvous on licensed channels before establishing communication links. Dedicated common control channel is the simplest way to achieve rendezvous. However, due to the absolute priority of licensed users [primary users (PU)] on accessing licensed channels, a dedicated common control channel may cause the PU long-time blocking problem, and the control channel saturation problem in a high SU density environment. Channel hopping schemes have been proposed to avoid the problems mentioned above. In this paper, we introduce two quorum-based channel hopping schemes. Our schemes outperform in terms of the four metrics: maximum time to rendezvous, channel loading, degree of rendezvous, and maximum conditional time to rendezvous.

Original languageEnglish
Article number7355336
Pages (from-to)918-930
Number of pages13
JournalIEEE Transactions on Communications
Issue number3
StatePublished - 1 Mar 2016


  • Channel hopping
  • cognitive radio networks
  • quorum system


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