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무선 전송환경의 링크품질을 고려한 개선된 AODV 라우팅프로토콜

Improved AODV Routing Protocol Considering the Link Quality of Wireless Transmission Environments

  • Lee, Tae-Hoon (Department of Network Centric Warfare, Ajou University) ;
  • Jeun, Sung-Woo (Department of Computer Engineering, University of Illinois) ;
  • Kim, Young-Ho (KIDA(Korea Institute for Defense Analyses) & Adjunct Professor of Ajou University)
  • 투고 : 2016.06.06
  • 심사 : 2016.09.27
  • 발행 : 2016.10.31

초록

오늘날 MANET에 대한 관심의 증대와 더불어 효율적인 MANET 라우팅프로토콜에 대한 연구가 활발히 진행중에 있다. 본 논문은 전술적 MANET 환경에서 Topology의 빈번한 변화와 제한적 무선환경에 적응된 라우팅 프로토콜을 개선하기 위해, 기존의 AODV라우팅 경로설정과정에서 Hop-Count만을 참조하던 방식에서 각 구간의 채널용량을 참조하는 LQA-AODV를 제안하였다. 제안된 LQA-AODV는 기존의 AODV라우팅프로토콜의 경로탐색과정에서 발생하는 RREQ메시지 포맷에 채널용량에 대한 Cost값을 추가하고 경로설정 시 구간별 누적 Cost값을 비교하여 경로를 설정하도록 하였다. 성능검증을 위해 NS2.35를 사용하였으며, 전술무선환경이 반영하기 위해 Link-Qualty모델을 적용하였다. 시뮬레이션은 LQA-AODV와 기존의 AODV를 비교분석하였으며, 그 결과 Packet Delivery Ratio와 End-to-End Delay 측면에서 성능이 일부 개선된 것을 확인할 수 있었다.

As interest in MANET is increasing nowadays, research upon an efficient MANET routing protocol is actively under way. A LQA(Link Qualty Aware)-AODV routing protocol to deal with frequent changes of topology and wireless link variations under tactical operating conditions is proposed in this paper. The suggested LQA-AODV takes into account the channel capacity of each hop during the route request process of the traditional AODV protocol. In detail, LQA-AODV adds a channel capacity cost value to the RREQ message format that occurs during the routing process of the existing AODV Routing Protocol causing the accumulated channel capacity cost values of each sections to be compared before establishing a route. To verify the performance of LQA-AODV, NS2.35 was utilized and the Link-Quality Model was applied in order to reflect the tactical wireless environment. The simulation compares and analyzes LQA-AODV and the existing AODV, showing a large improvement over the traditional AODV in regards to the Packet Delivery Ratio, and End-to-End Delay.

키워드

참고문헌

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피인용 문헌

  1. 교차 계층 설계 기법을 사용한 새로운 AODV 라우팅 프로토콜 설계 및 성능평가 vol.24, pp.6, 2016, https://doi.org/10.6109/jkiice.2020.24.6.768