Journal of the Korea Society of Computer and Information (한국컴퓨터정보학회논문지)

Korean Society of Computer Information (한국컴퓨터정보학회)
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Resource Allocation Scheme for Macro-Femtocell Overlaid LTE-Advanced Networks

매크로-펨토셀 중첩 LTE-Advanced 망을 위한 자원 할당 방안

  • Lee, Jong-Chan (Dept. of Computer Information Engineering, Kunsan National University) ;
  • Lee, Moon-Ho (Dept. of Multimedia Science, Chungwoon University)
  • 이종찬 (국립군산대학교 컴퓨터정보공학과) ;
  • 이문호 (청운대학교 멀티미디어학과)
  • Received : 2014.09.30
  • Accepted : 2014.11.03
  • Published : 2014.12.31
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Abstract

The heterogeneous LTE-Advanced networks comprising a macrocell and femtocells can provide an efficient solution not only to extend macrocell coverage but also to deal with packet traffics increasing explosively within macrocells. Efficient resource management schemes are necessary to maintain the QoS requirements of versatile multimedia applications in LTE-Advanced networks because their service-continuity may be defected by some delay and information loss. In this paper, we propose a resource allocation method for the heterogeneous LTE-Advancedl networks overlaid with femtocells. Performances are analyzed by simulation.

매크로셀과 펨토셀로 중첩 구성된 LTE 펨토셀 망은 매크로셀 영역을 확대시키고 증가된 패킷 용량을 수용할 수 있다. 특히 이동 멀티미디어 서비스는 지연 및 손실에 의해 서비스 연속성이 영향을 받기 때문에 이동 멀티미디어 서비스의 QoS 요구사항을 유지하기 위한 효율적인 자원 관리 방안이 필요하다. 본 논문에서는 LTE 펨토셀 망에서 멀티미디어 서비스의 효율적인 QoS를 제공하기 위한 방안의 하나로 수락 제어와 부하 제어와 밀접하게 연계된 자원 할당 방안을 제안한다. 제안된 방안은 매크로셀 및 펨토셀내 자원 점유 상태의 변화에 따라 부하제어를 수행하고 실시간 서비스에는 자원 점유의 우선권을 주며, 비실시간 서비스에 대해서는 버퍼링을 통하여 최대 자원을 일시적으로 할당하는 방식을 적용한다. 제안된 방안의 성능을 시뮬레이션에 의하여 분석한다.

Keywords

References

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