전자공학회논문지 (Journal of the Institute of Electronics and Information Engineers)

  • 제52권6호
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  • Pages.85-94
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  • 2015
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  • 2287-5026(pISSN)
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  • 2288-159X(eISSN)
대한전자공학회 (The Institute of Electronics and Information Engineers)
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무선메쉬네트워크에서 실시간 이동 멀티미디어 응용을 위한 고성능 QoS 멀티캐스트 라우팅 기법

High Performance QoS Multicast Routing Scheme for Real-Time Mobile Multimedia Applications in Wireless Mesh Networks

  • 강문식 (강릉원주대학교 전자공학과)
  • Kang, Moonsik (Department of Electronic Engineering, GangneungWonju National University)
  • 투고 : 2015.04.05
  • 심사 : 2015.05.24
  • 발행 : 2015.06.25
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초록

본 논문에서는 무선 메쉬네트워크(WMN)를 위한 동적 이동성 트래픽 환경에 적응하는 향상된 QoS 멀티캐스트 라우팅 스케줄링 기법을 제안한다. 이는 멀티미디어 응용에 대한 지연의 제약 조건을 제어함으로써 네트워크 QoS 문제를 처리하도록 한다. 멀티캐스트 그룹의 크기는 현재 네트워크 상태 및 QoS 요구사항 등에 따라 결정되며, 멀티캐스트 트리의 동적 재구성은 부분적 멀티캐스트 라우팅 방식 및 트래픽 예측 기법을 사용하는 전처리과정을 통해 이루어진다. 제안된 방법의 성능 평가는 적합한 지연시간 제한과 관련된 최적의 값을 선택함으로써, 임의로 생성된 가상 무선메쉬 네트워크 그래프에서 수행된다. 시뮬레이션 결과로 부터 제안된 QoS 멀티캐스트 라우팅 기법의 성능이 향상됨을 확인하였다.

In this paper, an enhanced QoS multicast routing scheduling scheme is proposed to adapt to a dynamic mobile traffic condition for wireless mesh networks (WMNs). It handles the network QoS by controlling the delay constraints for multimedia applications. The group size will be controlled according to both the current network state and QoS requirements. The dynamic reconstruction of QoS multicast tree can be obtained from preprocessing with both the partial multicast routing scheme and the traffic estimation. Performance evaluation of the proposed scheme is carried out on randomly generated graph derived from the wireless mesh network, by choosing the optimal value related to the appropriate delay bounds. Simulation results show that the proposed scheme can improve the performance of QoS multicast routing for WMNs.

키워드

참고문헌

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