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

대한전자공학회 (The Institute of Electronics and Information Engineers)
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애드혹 네트워크에서의 보조 경로를 이용한 에너지 인식 라우팅 알고리즘

Energy-Aware Routing Algorithm using Backup Route for Ad hoc Network

  • 정세원 (아주대학교 전자공학과) ;
  • 이채우 (아주대학교 전자공학과)
  • Jung Se-Won (Department of Electrical and Computer Engineering Ajou University) ;
  • Lee Chae-Woo (Department of Electrical and Computer Engineering Ajou University)
  • 발행 : 2005.06.01
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초록

본 논문에서는 에너지 제약적인 애드 혹 네트워크를 위해서 보조 경로 기법을 사용하여 네트워크의 에너지를 고르게 사용함으로써 네트워크 수명을 증가시키는 새로운 알고리즘을 제안한다. 최근 네트워크의 에너지를 효율적으로 사용하기 위한 On-Demanding 방식 기반의 다양한 알고리즘들이 제안되었다. 그 중 PSR(Power-aware Source Routing)은 경로 탐색 동안에 선택된 하나의 경로만을 지속적으로 사용하는 DSR(Dynamic Source Routing)의 단점을 극복하기 위해 에너지 사용량에 따라 경로를 주기적으로 교체함으로써 네트워크 수명을 늘린다. 그러나 이는 경로 교체 동안 발생되는 잦은 플러딩(Flooding)으로 인해 라우팅 오버헤드가 증가하는 문제점이 있다. 이러한 문제점을 해결하기 위해 본 논문에서는 경로 탐색 동안 설정된 보조경로(Backup Route)를 사용해 플러딩의 발생 없이 경로를 변경시키는 HPSR(Hierarchical Power-aware Source Routing)을 제안한다. HPSR은 보조 경로를 사용한 잦은 경로 변경 통해 네트워크 수명을 증가시키면서도 플러딩의 감소로 라우팅 오버헤드를 감소시킨다. 또한, 본 논문에서는 OPNET을 사용한 시뮬레이션을 통해 HPSR의 성능을 검증한다.

This paper proposes a new algorithm for the energy constraint ad-hoc network which efficiently spread the energy usage over the network through the backup route scheme in order to increase the network lifetime. Recently, the various energy-efficient routing algorithms based on On-demanding method are proposed. Among them, PSR(Power-aware Source Routing) increased the network lifetime through the periodical route alternation depended on the use of the battery while DSR(Dynamice Source Routing) uses only the route selected during the route discovery phase. But PSR has a problem that it increases the route overhead because of the frequent flooding for the route alternation. For solving this problem, we propose HPSR(Hierarchical Power-aware Source Routing) which uses the backup route set during the route discovery in order to alternation the route without the flooding. HPSR increases the network lifetime due to the frequent route alternation using backup route while it decreases the routing overhead due to the reduced flooding. In this paper, we also prove the performance of HPSR through the simulation using OPNET.

키워드

참고문헌

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