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Resource Allocation Based on Interference Awareness for Device-to-Device Communication in Cellular Networks

셀룰러 네트워크에서 간섭 인지 기반의 단말간 직접 통신 자원할당 방법

  • Yang, Mochan (School of Electronic Engineering, Soongsil University) ;
  • Shin, Oh-Soon (School of Electronic Engineering, Soongsil University) ;
  • Shin, Yoan (School of Electronic Engineering, Soongsil University)
  • Received : 2014.08.03
  • Accepted : 2014.08.26
  • Published : 2014.09.30

Abstract

We propose an efficient resource allocation scheme based on interference awareness for D2D (Device-to-Device) communication in cellular networks. Recently, many researchers have studied how to allocate frequency resources to DUE (D2D User Equipment) with full interference channel information. However, it is difficult to assume a scenario where instantaneous interference information between the CUE (Cellular UE) and DUE is known to the BS (Base Station). To tackle this problem, we proposed in this paper a new scheme in which the BS allocates a resource to CUE and DUE without a full channel information and can aware interference based on only transmit power and distance between UEs. Simulation results show effectiveness of the proposed scheme.

본 논문에서는 셀룰러 네트워크에서 단말간 직접(D2D; Device-to-Device) 통신을 위한 간섭 인지 기반의 효율적인 자원할당 방법을 제시한다. 최근 들어, 기지국이 주 채널 정보뿐만 아니라 CUE (Cellular UE)와 DUE 사이의 간섭 채널 정보까지 알고 있는 상황에서 DUE (D2D User Equipment)에 자원을 할당하는 방법들이 많이 연구되었으나, 현실적으로 이러한 간섭 채널 정보를 획득하는 것은 어렵다. 이와 같은 문제점을 해결하기 위하여, 본 논문에서는 기지국이 간섭 채널 정보를 전달 받지 않고 전송 전력과 거리 정보를 이용하여 CUE의 간섭을 인지하고 자원을 할당하는 방법을 제시한다. 모의실험 결과는 제안 기법의 효율성을 보여준다.

Keywords

References

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