Journal of the Korea Society for Simulation (한국시뮬레이션학회논문지)

The Korea Society for Simulation (한국시뮬레이션학회)
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Comparison Study of Helper Node Selection Schemes of Cooperative Communications at Ad Hoc Networks

애드혹 네트워크에서 협력통신을 위한 도움노드 선정방법 비교연구

  • 장재신 (인제대학교 정보통신공학과)
  • Received : 2012.03.18
  • Accepted : 2012.05.23
  • Published : 2012.06.30
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Abstract

In this paper, a study on finding an appropriate helper node that can help increase effective frame transmission rate for cooperative communications at ad hoc networks is carried out. Those researches from reference use the reactive helper node selection mechanism which starts its role after exchanging RTS and CTS frames between source and destination nodes, and are implemented into our simulator for performance comparison. System throughput and average channel access delay are used for performance measures and all communicating nodes are assumed to move independently within the communication range. It is anticipated that this research result can be used as basic information for designing a new efficient helper node selection scheme.

본 논문에서는 애드혹 무선 네트워크에서 채널 전송속도를 높일 수 있는 협력통신 기법에서 도움노드를 선정하는 방법에 대한 연구를 수행하였다. 송수신 노드가 RTS/CTS 제어 프레임을 서로 교환한 이후에 도움노드를 선정하는 사후선정 기법을 채용한 참고문헌 연구결과를 컴퓨터 모의실험을 사용하여 성능비교를 수행하기 위해 시뮬레이터를 구현하였다. 성능평가 척도는 시스템 처리량과 채널 액세스 지연시간을 사용하였으며, 통신노드는 모두 지정된 통신영역 내에서 독립적으로 이동하는 모델을 사용하였다. 성능비교와 장단점 분석을 통해 취합된 결과는 성능이 우수한 새로운 도움노드 선정기법을 설계하는데 귀중한 자료가 될 것으로 판단된다.

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