Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Wireless Packet Scheduling Algorithm for Delay Proportional Internet Differentiated Services

무선 망에서의 지연 비례 인터넷 차별화 서비스 제공을 위한 스케줄링 알고리즘

  • 유상조 (인하대학교 정보통신대학원) ;
  • 이훈철 (LG전자 디지털TV연구소)
  • Published : 2003.06.01
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Abstract

In this paper, we propose a wireless scheduling algorithm to provide the Internet delay proportional differentiated services in wireless networks. For considering network environments that have burst and location-dependent channel errors, our proposed WDPS(Wireless Delay Proportional Service) scheduling algorithm adaptively serves packets in class queues based on the delivered delay performance for each class. The remarkable characteristics of WDPS scheduler are supporting a fair relative delay service, providing graceful throughput and delay compensation, and avoiding class queue blocking problem. Through simulations, we show that the algorithm achieves the desirable properties to provide delay proportional services in wireless networks.

본 논문에서는 인터넷 차별화 서비스 구조인 지연 비례 서비스를 무선 망 환경에서도 제공할 수 있는 WDPS(Wireless Delay Proportional Service) 스케줄링 알고리즘을 제안한다. WDPS는 무선 망의 버스트 하고 위치-종속적인 채널 에러 특성을 고려하여 현재까지 서비스 된 클래스간 지연 서비스 정도를 근거로 적응적으로 다음에 서비스할 클래스를 선택한다. 제안된 스케줄링 방법은 무선 망 에러로 생기는 클래스큐의 블록킹 문제를 해결하고, 클래스간 공정한 지연 서비스 품질을 제공하며 서비스 보상이 점진적으로 이루어져 하나의 클래스가 독점적으로 무선자원을 사용하지 못하도록 하였다. 모의 실험에서는 제안된 WDPS 스케줄링 방법을 사용하여 기존 인터넷 지연 차별화 서비스를 무선 망에서도 원하는 서비스 요구조건에 맞게 서비스 할 수 있음을 보였다.

Keywords

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