The KIPS Transactions:PartC (정보처리학회논문지C)

Korea Information Processing Society (한국정보처리학회)
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A Traffic Management Scheme for Service Differentiation over MANETs

MANETs에서 차등서비스 제공을 위한 트래픽 관리 기법

  • 김관웅 (원광대학교 전기전자정보공학부) ;
  • 배성환 (한려대학교 멀티미디어정보통신공학부) ;
  • 김대익 (전남대학교 공학대학 정보소재공학과)
  • Published : 2006.08.01
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Abstract

Currently, the IETF group is working on service differentiation in the Internet. However, in wireless environments such as Ad-hoc networks, where channel conditions are variable and bandwidth is scarce, the Internet differentiated services are suboptimal without lower layers' support. The IEEE 802.11 standard for Wireless LANs is the most widely used WLAN standard today. 1t has a mode of operation that can be used to provide service differentiation, but it has been shown to perform badly. In this paper, we present a new service differentiation scheme for support QoS in the wireless IEEE 802.11, which is based on a multiple queuing system to provide priority of user's flow. We simulate and analyze the performance of our algorithm and compare its performance with the original IEEE 802.11b protocol. Simulation results show that our approach increases overall throughput in the MAC layer.

인터넷에서 차등서비스에 관한 연구는 IETF 그룹에서 표준화되었으나, Ad-hoc 네트워크와 같은 무선 환경에서 인터넷의 차등 서비스는 MAC과 같은 하위레벨 지원 없이는 구현하기가 어렵다. 현재 IEEE 802.11 프로토콜은 무선 랜 환경에 광범위하게 쓰이며 사실상의 표준으로 자리 잡았다. 그러나 차등서비스 제공을 위한 모드를 지원하지만, 성능이 낮은 것으로 나타났다. 본 논문에서는 802.11 에서 QoS 제공을 위해 우선순위를 지원하는 다중 큐 기반의 새로운 알고리즘을 제안하고 시뮬레이션을 통해 IEEE 802.11의 큐영시스템과 성능을 비교, 분석하였다. 컴퓨터 시뮬레이션 결과 제안한 알고리즘 방식의 성능이 우수했음을 보였다.

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References

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