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Performance Enhancement Directional CSMA/CA Algorithm in mmWave Bands

밀리미터파 대역에서 지향성 CSMA/CA의 성능 향상을 위한 알고리즘

  • 김미정 (고려대학교 공과대학 정보통신기술연구소) ;
  • 이우용 (한국전자통신연구원)
  • Received : 2011.09.30
  • Accepted : 2011.11.02
  • Published : 2012.01.31

Abstract

In this paper, an algorithm that enhances the conventional directional CSMA/CA protocol in IEEE 802.15.3c is proposed under saturation environments. For the algorithm, a Markov chain model is presented and analyzed in no-ACK mode. The effects of directional antennas and the features of IEEE 802.15.3c MAC are considered in the model. The optimal sizes of contention window are derived from the numerical results. The numerical results show that the proposed directional CSMA/CA algorithm outperforms conventional one. The overall analysis is verified by simulation. The obtained results provide the criterion for selecting the optimal parameters and developing a MAC protocol that enhances the performance of mmWave WPANs.

Acknowledgement

Supported by : 한국연구재단

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