5th International Mobile Multimedia Communications Conference

Research Article

MAC layer Cooperation Analysis in Cognitive Wireless Networks

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        author={Ferran Adelantado and Angel A. Juan and Christos Verikoukis},
        title={MAC layer Cooperation Analysis in Cognitive Wireless Networks},
        proceedings={5th International Mobile Multimedia Communications Conference},
  • Ferran Adelantado
    Angel A. Juan
    Christos Verikoukis
    Year: 2010
    MAC layer Cooperation Analysis in Cognitive Wireless Networks
    DOI: 10.4108/ICST.MOBIMEDIA2009.7508
Ferran Adelantado1,*, Angel A. Juan1,*, Christos Verikoukis2,*
  • 1: Universitat Oberta de Catalunya
  • 2: Centre Tecnològic de Telecomunicacions de Catalunya
*Contact email: ferranadelantado@uoc.edu, ajuanp@uoc.edu, cveri@cttc.es


Cognition and cooperation are two concepts closely connected in Cognitive Wireless Networks. In such distributed networks, where there is not any central node responsible for retrieving/forwarding the information from/to all the users, the monitoring of the spectrum availability must be carried out also in a distributed fashion. However, there exists a trade-off between the amount of monitoring information shared among the users and the overhead introduced to the network, particularly when users are equipped with a single antenna. As primary users may suddenly transmit on any licensed channel, all secondary users should monitor periodically alternative idle channels where to resume the ongoing communications in case such a situation occurs. In this paper we analyze the minimum spectrum monitoring frequency required for users to have a number of alternative idle channels.