한국통신학회논문지 (The Journal of Korean Institute of Communications and Information Sciences)

  • 제29권11B
  • /
  • Pages.974-979
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  • 2004
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  • 1226-4717(pISSN)
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  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

IEEE 무선랜에서 부분적인 큐 정보를 이용한 적응적인 MAC 스케쥴링 기법

Adaptive MAC Scheduling Scheme using Partial Queue Length Information in IEEE Wireless LAN

  • 발행 : 2004.11.01
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⟨ 이전 논문 다음 논문 ⟩

초록

IEEE 802.l1b에서는 기본서비스인 DCF와 QoS를 제공하기 위한 무경쟁 서비스인 PCF가 제공된다. DCF는 CSMA/CA(충돌을 회피하는 매체 접속 기법) 접속 프로토콜을 사용한다. 본 논문에서는 PCF를 수정하여 트래픽의 부하가 많아진 채널에 가충치를 두어 서비스하는 기법을 제시하였다. 스테이션 측으로부터 부분적인 큐의 정보를 받아 가중치를 계산하였으며 NS-2 시뮬레이터를 사용하여 PCF 기법을 수정한 기법의 우수성을 검증하였다.

In the IEEE 802.1 Ib, DCF provides contention based services and PCF provides contention free services for QoS suppof. DCF uses CSMA/CA (Carrier Sense Multiple Access/collision Avoidance) as an access protocol. In this paper, an enhanced PCF, which gives weights to channels with heavy traffic load, was proposed. The weight is depending on the partial queue length information from STAs. NS-2 simulation results show that the proposed scheme is an promising approach for enhancing the PCF.

키워드

참고문헌

  1. Z.Chen, and A. Khokhar, 'Improved MAC protocols for DCF and PCF modes over fading channels in wireless LANs,' IEEE Wireless Communications and Networking, Vol. 2, pp. 1297-1302, Mar. 2003
  2. L. Xu, X. Shen, and W. Jon, 'Dynamic Bandwidth Allocation with Fair Scheduling for WCDMA Systems,' IEEE Wireless Communications, Vol. 9, pp. 26-32, Apr. 2002
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