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Channel Statistical MAC Protocol for Cognitive Radio

Xiang, Gao    (Department of Information & Communication, Korea University of Technology and Education   ); Zhu, Wenmin    (Department of Information & Communication, Korea University of Technology and Education   ); Park, Hyung-Kun    (Department of Information & Communication, Korea University of Technology and Education  );
  • 초록

    opportunistic spectrum access (OSA) allows unlicensed users to share licensed spectrum in space and time with no or little interference to primary users, with bring new research challenges in MAC design. We propose a cognitive MAC protocol using statistical channel information and selecting appropriate idle channel for transmission. The protocol based on the CSMA/CA, exploits statistics of spectrum usage for decision making on channel access. Idle channel availability, spectrum hole sufficiency and available channel condition will be included in algorithm statistical information. The model include the control channel and data channel, the transmitter negotiates with receiver on transmission parameters through control channel, statistical decision results (successful rate of transmission) from exchanged transmission parameters of control channel should pass the threshold and decide the data transmission with spectrum hole on data channel. A dynamical sensing range as a important parameter introduced to maintain the our protocol performance. The proposed protocol's simulation will show that proposed protocol does improve the throughput performance via traditional opportunistic spectrum access MAC protocol.


  • 주제어

    cognitive radio .   opportunistic spectrum access .   channel availability .   spectrum hole sufficiency .   channel condition .   channel selecting .   ad-hoc networks.  

  • 참고문헌 (8)

    1. FCC, Spectrum Policy Task Force Report, No 02-155, November 2002 
    2. Spectrum efficient uni-and multicast services over dynamic multi-radio networks in vehicular environments. 
    3. DARPA ATO the next generation program. 
    4. IEEE 802.22 wireless regional area networks WRAN. 
    5. Hang Su and Xi Zhang, "Cross-layer based opportunistic MAC protocols for QoS provisionings over cognitive radio wireless networks," in IEEE Journal on Selected Areas in Communications, January, 2008. 
    6. Long Le and Ekram Hossain, "OSA-MAC:A MAC protocol for opportunistic spectrum access in cognitive radio networks," in WCNC, 2008. 
    7. Juncheng Jia, Qian Zhang, Xuemin Shen, "HC-MAC: A hardware-constrained cognitive MAC for efficient spectrum management," in IEEE Journal on Areas in Communications, January, 2008. 
    8. Alex Chia-Chun Hsu, David S. L. Wei, and C.-C. Jay Kuo, "A cognitive MAC protocol using statistical channel allocation for wireless Ad-hoc networks", in IEEE Communications Society, WCNE, 2007. 

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