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

대한전자공학회 (The Institute of Electronics and Information Engineers)
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무선 애드혹 네트워크에서 다중경로 라우팅을 위한 경로 안정성 측정 방법

A Way to Evaluate Path Stability for Multipath Routing in Wireless Ad Hoc Networks

  • 장복전 (한양대학교 전자컴퓨터통신공학부) ;
  • 박용진 (한양대학교 전자컴퓨터통신공학부)
  • Zhang, Fu-Quan (Dept. of Electronics and Communications, Hanyang University) ;
  • Park, Yong-Jin (Dept. of Electronics and Communications, Hanyang University)
  • 투고 : 2009.12.22
  • 심사 : 2010.04.13
  • 발행 : 2010.04.25
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초록

무선 애드혹 네트워크에서 노드들의 이동성은 각각 다르다. 각 경로를 구성하는 노드는 라우터로서 동작하고 있고, 따라서 이러한 노드들이 이동하게 되면 빈번하게 새로운 경로를 탐색해야 한다. 경로를 구성하고 있는 노드 중 일 노드가 높은 이동성을 갖을 경우, 이러한 노드는 경로의 단절을 수시로 야기시키므로 경로 선택에서 최대한 회피해야만 한다. 본 논문에서는 무선 애드혹 네트워크에서 다중경로 라우팅을 위한 경로 안정성 평가를 위해 기존에 알려져 있는 다중경로 라우팅 프로토콜인 Ad hoc on-demand multipath distance vector (AOMDV)를 확장한 한 이동성 인식 방법으로, path stability evaluation (PSE) 프로토콜을 제안한다. AOMDV와 PSE 프로토콜을 ns-2를 통해 비교하였으며, 시뮬레이션 결과에서는 PSE가 패킷 전달, 종단간 딜레이(end-to-end delay), 라우팅 오버헤드(routing overhead) 및 처리율 측면에서 보다 optimistic한 성능을 보여주고 있음을 증명한다.

The mobility of nodes are different in wireless ad hoc networks. Routes have to be refreshed frequently due to the mobility of the nodes acting as routers. Path consists of a few highly mobile nodes should be avoided to forward packets, because even only one highly mobile node may result in the break of path. We develop a mobility aware method to evaluate path stability for multipath routing in wireless Ad Hoc networks. Specifically, we extend it to a well-studied multipath routing protocol known as ad hoc on-demand multipath distance vector (AOMDV). The resulting protocol is referred to as path stability evaluation (PSE). Performance comparison of AOMDV with PSE are studied through ns-2. Simulation shows that PSE has optimistic results in performance metrics such as packet delivery, end-to-end delay, routing overhead and throughput.

키워드

참고문헌

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