Cognitive Radio Oriented Wireless Networks. 12th International Conference, CROWNCOM 2017, Lisbon, Portugal, September 20-21, 2017, Proceedings

Research Article

Cognitive Radio Policy-Based Adaptive Blind Rendezvous Protocols for Disaster Response

  • @INPROCEEDINGS{10.1007/978-3-319-76207-4_8,
        author={Saim Ghafoor and Cormac Sreenan and Kenneth Brown},
        title={Cognitive Radio Policy-Based Adaptive Blind Rendezvous Protocols for Disaster Response},
        proceedings={Cognitive Radio Oriented Wireless Networks. 12th International Conference, CROWNCOM 2017, Lisbon, Portugal, September 20-21, 2017, Proceedings},
        proceedings_a={CROWNCOM},
        year={2018},
        month={3},
        keywords={Adaptive radio Blind rendezvous Cognitive radio network Cognitive radio operating policy Disaster response network Primary radio activity},
        doi={10.1007/978-3-319-76207-4_8}
    }
    
  • Saim Ghafoor
    Cormac Sreenan
    Kenneth Brown
    Year: 2018
    Cognitive Radio Policy-Based Adaptive Blind Rendezvous Protocols for Disaster Response
    CROWNCOM
    Springer
    DOI: 10.1007/978-3-319-76207-4_8
Saim Ghafoor1,*, Cormac Sreenan1,*, Kenneth Brown1,*
  • 1: University College Cork
*Contact email: saim.ghafoor@insight-centre.org, cjs@cs.ucc.ie, k.brown@cs.ucc.ie

Abstract

In disaster scenarios, with damaged network infrastructure, cognitive radio (CR) can be used to provide temporary network access in the first few hours. Since spectrum occupancy will be unknown, the radios must rely on spectrum sensing and opportunistic access. An initial goal is to establish rendezvous between CR nodes to set up the network. The unknown primary radio (PR) activity and CR node topology makes this a challenging task. Existing blind rendezvous strategies provide guarantees on time to rendezvous, but assume channels with no PR activity and no external interferers. To handle this problem of blind multi-node rendezvous in the presence of primary users, we propose an Extended Modular Clock Algorithm which abandons the guarantee on time to rendezvous, an information exchange mechanism for the multi-node problem, and various cognitive radio operating policies. We show that the adapted protocols can achieve up to 80% improvement in the expected time to rendezvous and reduce the harmful interference caused to the primary radio.