e-Infrastructure and e-Services for Developing Countries. Third International ICST Conference, AFRICOMM 2011, Zanzibar, Tanzania, November 23-24, 2011, Revised Selected Papers

Research Article

Providing Some Quality of Service for Secondary Users in Cognitive Radios Using Time Slotted Systems

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  • @INPROCEEDINGS{10.1007/978-3-642-29093-0_3,
        author={Hudson Okii and Idris Rai},
        title={Providing Some Quality of Service for Secondary Users in Cognitive Radios Using Time Slotted Systems},
        proceedings={e-Infrastructure and e-Services for Developing Countries. Third International ICST Conference, AFRICOMM 2011, Zanzibar, Tanzania, November 23-24, 2011, Revised Selected Papers},
        proceedings_a={AFRICOMM},
        year={2012},
        month={5},
        keywords={cognitive radio networks spectrum assignment quality of service queueing theory},
        doi={10.1007/978-3-642-29093-0_3}
    }
    
  • Hudson Okii
    Idris Rai
    Year: 2012
    Providing Some Quality of Service for Secondary Users in Cognitive Radios Using Time Slotted Systems
    AFRICOMM
    Springer
    DOI: 10.1007/978-3-642-29093-0_3
Hudson Okii1,*, Idris Rai1,*
  • 1: Makerere University
*Contact email: Okihudsn@yahoo.com, rai@cit.mak.ac.ug

Abstract

The current research in cognitive radio has been considering absolute guarantee for primary users allowing secondary users access to spectrum only if there is no primary users with data to send. At high arrival rate of primary users this might lead to complete starvation of secondary users and yet it is possible to release some spectrum to secondary users by delaying primary users without affecting their quality. We propose a resource allocation scheme that uses delayed time periods of primary users to transmit secondary user’s data packets without jeopardizing the quality of primary users. We analytically modeled the scheme using M/G/1 queue. Our numerical experiments demonstrate that secondary users can be offered some quality of service by delaying primary users in the system to a limit that does not degrade their performance.