9th International Conference on Communications and Networking in China

Research Article

TSCR-MAC:Time Slotted Channel Reservation Based Cognitive MAC

  • @INPROCEEDINGS{10.4108/icst.chinacom.2014.256545,
        author={Juanmei Wu and Yichen Wang and Jianguo Deng},
        title={TSCR-MAC:Time Slotted Channel Reservation Based Cognitive MAC},
        proceedings={9th International Conference on Communications and Networking in China},
        publisher={IEEE},
        proceedings_a={CHINACOM},
        year={2015},
        month={1},
        keywords={channel reservation; mac protocol; cognitive radio},
        doi={10.4108/icst.chinacom.2014.256545}
    }
    
  • Juanmei Wu
    Yichen Wang
    Jianguo Deng
    Year: 2015
    TSCR-MAC:Time Slotted Channel Reservation Based Cognitive MAC
    CHINACOM
    IEEE
    DOI: 10.4108/icst.chinacom.2014.256545
Juanmei Wu1, Yichen Wang1,*, Jianguo Deng1
  • 1: Xi'an Jiaotong University
*Contact email: wangyichen0819@mail.xjtu.edu.cn

Abstract

A novel multichannel MAC protocol called time slotted channel reservation based MAC protocol (TSCR-MAC) for cognitive radio networks is introduced, specified, illustrated and simulated. TSCR-MAC demands only one half-duplex CR radio and employs common control channel for information exchange. In TSCR-MAC a time slot is assigned a separate frequency channel. It allows a pair of communicating nodes to reserve a channel in the allocated slot via reservation operation and handshake mechanism. Fresh node pairs contend the unoccupied channel by a p-persistent fashion in the meantime and the probability value is dynamically adjusted according to the historical information and current available channel. In this paper, TSCR-MAC protocol and frame structure are fully described. The simulated results show that TSCR-MAC can not only achieve much higher average throughput but also provide better spectrum utilization and delay performance, compared with multichannel ALOHA and traditional reservation schedule.