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Improvement of OLSR Through MIMC's Decreased Overhead in MANET

모바일 애드 혹 네트워크 환경 하에서 멀티인터페이스 멀티채널의 오버헤드 감소를 통한 OLSR의 성능 개선

  • 장재영 (한밭대학교 정보통신대학원) ;
  • 김정호 (한밭대학교 컴퓨터공학과)
  • Received : 2015.12.09
  • Accepted : 2016.03.05
  • Published : 2016.03.31

Abstract

The most critical research issue in MANET environment is on supporting reliable communication between various devices. Various Multi-Hop Routing Protocol studies have proceeded. However, some problems you might have found when you use the existing link state routing technique are that it increases Control Message Overhead and it is unstable when node moves in CR circumstance which has transformation of using channel and MIMC circumstance which uses a number of interfaces. This essay offers a technique which is based on On-Demand Hello and the other technique which used Broadcast Interface of optimization as a solution to decrease Control Message Overhead. Also it proposes Quick Route Restoration technique which is utilized by GPS and MPR Selection technique which consider mobility as a solution of stable communication when node moves. Those offered Routing Protocol and OPNET based simulator result will be expected to be an excellent comparison in related research fields.

MANET(Mobile Ad-hoc Network) 환경에서 가장 중요시되는 것은 여러 장비간의 신뢰성 있는 통신이다. 이를 위해 다양한 멀티 홉 라우팅 프로토콜 연구가 진행되어 왔다. 하지만 기존의 Link State Routing 기법은 사용채널의 변화가 존재하는 CR(Cognitive Radio) 환경과 다수의 인터페이스를 사용하는 MIMC(Multi-Interface Multi-Channel) 환경에서 제어 메시지 오버헤드를 증가시키는 단점 및 노드가 이동할 때 안정적이지 않은 문제점이 있다. 본 논문은 Control Message Overhead를 감소시키기 위한 방안으로 On-demand Hello를 사용한 기법, Broadcast Interface의 최적화를 이용한 기법을 제시한다. 또한 노드가 이동할 때 안정적인 통신을 위한 방안으로 노드의 이동성을 고려한 MPR 선정기법, 위치정보를 활용한 빠른 경로 복구기법을 제시한다. 제시한 라우팅 프로토콜과 OPNET 기반의 시뮬레이터 결과는 관련 분야 연구에 비교 대상으로 활용할 수 있을 것으로 기대한다.

Keywords

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