Multicast Rendezvous in Fast-Varying DSA Networks

Mohammad J. Abdel-Rahman, Hanif Rahbari, Marwan Krunz

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Establishing communications between devices in a dynamic spectrum access (DSA) system requires the communicating parties to "rendezvous" before transmitting data packets. Frequency hopping (FH) is an effective rendezvous method that does not rely on a predetermined control channel. Previous FH-based rendezvous designs mainly target unicast rendezvous, and do not intrinsically support multicast rendezvous, where a group of nodes need to rendezvous simultaneously. Furthermore, these designs do not account for fast primary user (PU) dynamics, leading to long time-to-rendezvous (TTR). In this paper, we exploit the uniform k-arbiter and Chinese Remainder Theorem quorum systems to develop three FH-based multicast rendezvous algorithms, which provide different tradeoffs between rendezvous efficiency (e.g., low TTR) and security (e.g., robustness to node compromise). Our rendezvous algorithms are tailored for asynchronous and spectrum-heterogeneous DSA systems. To account for fast PU dynamics, we develop an algorithm for adapting the proposed FH designs on the fly. This adaptation is done through efficient mechanisms for channel ordering and quorum selection. Our simulations validate the effectiveness of the proposed rendezvous algorithms, their PU detection accuracy, and their robustness to insider attacks.

Original languageEnglish (US)
Article number6899689
Pages (from-to)1449-1462
Number of pages14
JournalIEEE Transactions on Mobile Computing
Issue number7
StatePublished - Jul 1 2015


  • Channel sorting
  • dynamic frequency hopping
  • dynamic spectrum access
  • multicast rendezvous
  • quorum systems

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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