Journal of IKEEE (전기전자학회논문지)

Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
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A Study of PCI (Physical Cell Identification) Assignment in LTE (Long Term Evolution) SON (Self-Organization Network)

LTE 자가 구성 네트워크망에서 물리적 셀 ID할당 방법 연구

  • Received : 2019.09.02
  • Accepted : 2019.09.26
  • Published : 2019.09.30
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Abstract

In this paper, the author analyzed the PCI (Physical Cell Identification) allocation methods in the LTE (Long Term Evolution) SON (Self Organization Network) environment. A variety of techniques have been proposed for how to allocate PCI, and the LTE standard fundamentally explained that collision between a cell and neighbor cells arise while a cell assign the PCI. Therefore, in this paper, the author examined the scenarios of PCI collision, weak collision, and confusion proposed by LTE specification. In addition, the cell central approach and the distributed approach were discussed as solutions for each scenario. In this paper, the author reviewed the approach of graphic coloring technique which was studied recently and explained the strategy of central approach.

본 논문에서는 LTE(Long Term Evolution) SON(Self Organization Network) 환경에서 PCI(Physical Cell Identification)를 할당하는 방법에 대하여 분석하였다. PCI를 할당하는 방법에 다양한 기법들이 제시되었고 규격에서는 기본적으로 PCI를 할당하는 과정에서 다른 셀과 ID가 '충돌'(Collision) 또는 '혼란'(Confusion)을 일으킬 수 있다는 것을 제시하였다. 따라서 본 논문에서는 LTE 규격에서 제시하는 PCI '충돌', '약한충돌'(Weak Collision) 그리고 '혼란'의 시나리오가 무엇인지 내용을 살펴보았다. 또한, 각 시나리오에 대한 해결 방법으로 셀 중앙적접근과 분산적 접근 방법에 대해 살펴보았다. 논문에서는 최근 연구되고 있는 그래픽 컬러링(Graphic Coloring) 기법에 대한 접근 방법에 대해 살펴보았고 중앙접근적 방법에 대한 전략에 대해 설명하였다.

Keywords

References

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