Journal of the Institute of Convergence Signal Processing (융합신호처리학회논문지)

The Korea Institute of Convergence Signal Processing (한국융합신호처리학회)
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Hybrid ABS based Inter-Cell Scheduling Algorithms for QoS Improvement of Heterogeneous Networks

이기종 네트워크의 QoS 향상을 위한 Hybrid ABS기반 셀 간 스케줄링 알고리즘

  • Kim, Myung-Dong (School of Computer, Information, and Communication Engineering, Sangji University) ;
  • Seong, Hyeon-Kyeong (School of Computer, Information, and Communication Engineering, Sangji University)
  • 김명동 (상지대학교 컴퓨터정보공학부) ;
  • 성현경 (상지대학교 컴퓨터정보공학부)
  • Received : 2016.01.04
  • Accepted : 2016.03.17
  • Published : 2016.06.01
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Abstract

In this paper, for the improvement of quality of service(QoS) performance of heterogeneous networks, multi-cell scheduling is proposed. In order to implement the proposed algorithm, for the recognition of the impact on the throughput performance of users, macro-pico-cells that form distributed architecture were proposed. In operating heterogeneous networks, considering the centralized structure, a macro-RRH(Remote Radio Head) deployment scenario was proposed. For interference mitigation of the proposed system, by applying the optional sub-frame, through CQI(Channel Quality Indicator) measurement for each sub-frame period, constraint conditions were measured according to system situations. For the simplification, the pattern of the same ABS muting was assumed. In the above two multi-cell environments, the algorithm of high-speed load balancing maintenance was proposed.

본 논문에서는 이기종 네트워크의 QoS 성능 향상을 위한 멀티 셀 스케줄링을 제안한다. 제안된 알고리즘 구현을 위하여 UE 처리량에 미치는 영향을 인식하고자 분산형 구조의 매크로-피코 배치 시나리오와 중앙 집중식 구조의 매크로-RRH 배치 시나리오를 제안하여 이기종 네트워크 시스템을 구성한다. 제안되는 시스템의 간섭완화를 위해 선택적 서브프레임을 적용하고 각 서브프레임 기간의 CQI 측정을 통하여 시스템 상황에 따른 제약조건을 측정하며, 시스템의 단순화를 위해서 동일한 ABS를 적용하여 뮤팅 패턴을 가정한다. ABS를 이용하는 것은 전송시간 구간의 일부를 매크로 셀이 전송하지 않게 설정하고 이 구간에서 피코 셀에서만 전송하도록 설정하기 위한 것이다.

Keywords

References

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