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

  • 제34권3B호
  • /
  • Pages.264-273
  • /
  • 2009
  • /
  • 1226-4717(pISSN)
  • /
  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

HR-WPAN에서 링크 상태에 따른 동적 채널 타임 할당 기법

Dynamic Allocation of Channel Times based on Link Quality of HR-WPAN

  • 강재은 (한양대학교 컴퓨터공학과 정보통신 연구실) ;
  • 변성원 (LG전자 HE(Home Entertainment) 사업부 LCD TV 연구소) ;
  • 이정규 (한양대학교 컴퓨터공학과 정보통신 연구실)
  • 발행 : 2009.03.31
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초록

본 논문에서는 IEEE 802.15.3 HR-WPAN(High Rate Wireless Personal Area Network)의 PNC(PincoNet Coordinator)에서 DEV(DEVice)의 링크 상태에 따라 동적으로 채널 시간을 할당하는 DABL(Dynamic Allocation of channel times Based on Link quality of the DEV) 알고리즘을 이용하여 시스템에서의 평균 트래픽 전송률을 향상시키고 지연시간을 감소시키는 방법을 제안한다. 좀 더 구체적으로, DABL 알고리즘은 DEV의 링크 상태에 따라 다중 변조 기법을 제공할 뿐만 아니라, 슈퍼프레임에서의 각 DEV를 위한 채널 타임도 동적으로 스케줄링하는 방법을 제공한다. 또한 트래픽의 QoS(Quality of Services)를 고려하여, 본 논문에서는 실시간 트래픽과 비실시간 트래픽으로 구분하여 DABL 알고리즘을 제안하였다. 마지막으로, 본 논문에서는 기존 균등 분할 방식과 DABL 방식의 성능 비교를 위해 시뮬레이션을 수행하였다.

For IEEE 802.15.3 HR-WPAN, we propose the DABL algorithm that PNC can allocate the channel times to the DEV in super frame in order that system frame throughput is increased and the delay is decreased. In detail, the DABL algorithm allows to dynamically allocate channel time as well as to adaptively apply the modulation and coding scheme based on the link quality of the DEV. In addition, due to the facts that QoS is quite different depending on service types, we provide the DABL algorithm taking into account RT(Real Time) traffic and Non-RT traffic respectively. Finally, we show simulation results of the DABL algorithm compared to the conventional algorithm that the PNC equally allocates channel times to the DEV regardless of the link quality of the DEV.

키워드

참고문헌

  1. IEEE 802.15 TG3, 'IEEE Standard for Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements Part 15.3: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for High Rate Wireless Personal Area Networks (WPANs) Amendment 1: MAC Sublayer,' pp. 1-146, May 2006
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