The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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An ANP-based Resource Management Scheme in Heterogeneous Wireless Networks Considering Multiple Criteria

다기준 요소를 고려한 ANP 기반 이기종 무선 네트워크 자원관리 방안

  • 신충용 (경희대학교 컴퓨터공학과 모바일 & 임베디드 시스템 연구실) ;
  • 조진성 (경희대학교 컴퓨터공학과 모바일 & 임베디드 시스템 연구실)
  • Received : 2011.07.06
  • Accepted : 2011.08.01
  • Published : 2011.08.31
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Abstract

In a heterogeneous wireless environment, a variety of Radio Access Technologies (RATs) coexist. Since the number of RATs is anticipated to increase in the near future, it is desirable to have radio and network resources managed in a cooperative manner using the Common Radio Resource Management (CRRM) strategy. In order to make RAT-specific radio resources manageable in CRRM, this paper proposes the Analytical Network Process (ANP) based resource management scheme that efficiently allocates resources among heterogeneous wireless networks. The proposed ANP-based method is flexible enough to be used in any network environment and can consider a multitude of decision factors. In addition, the proposed scheme uses a radio bandwidth model, which properly reflects transmission rates under given channel conditions, as the actual radio resources to be allocated. The model considers the AMC (Adaptive Modulation and Coding) scheme that is widely used in current broadband wireless access technologies, and thus, packet service characteristics, such as response time, can be analyzed. The effectiveness and flexibility of the proposed method are demonstrated by implementing a number of existing factors on heterogeneous networks environment.

다양한 무선 기술이 증가함에 따라 이기종 네트워크 환경은 여려 우선 기술들이 중첩 되어 공존하는 환경으로 변화되고 있다. 이렇게 혼재하여 공존하는 여러 우선 네트워크들의 효율적인 관리를 위해 통합자원관리 방안(Common Radio Resource Management: CRRM)이 제안되었다. 통합자원관리 방안은 중첩되어 존재하는 다양한 이기종 네트워크들의 자원을 하나의 자원과 같이 통합적으로 관리하는 방안이다. 다양한 네트워크가 중첩되어 존재하고 네트워크에 따른 우선 서비스의 종류도 증가함에 따라 CRRM에서 다양한 네트워크들의 통합적인 자원관리를 위해서는 고려해야 할 사항이 더욱 증가하게 된다. 본 논문에서는 여러 가지 고려요소를 바탕으로 최적의 선택을 결정하는 다기준 의사 기법의 하나인 Analytical Network Process (ANP)를 사용해 통합자원관리 방안을 제안하였다. 또한 본 논문에서는 우선 환경에서 널리 사용되고 있는 Adaptive Modulation and Coding (AMC)를 고려하여 채널 상태 (channel condition) 에 따라 할당되는 대역폭 모델을 제안하였다. 시뮬레이션에서는 자원관리시에 고려될 수 있는 다양한 요소를 적용하여 고려하는 요소에 따라 최적의 자원관리가 적용됨을 확인하였다.

Keywords

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