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

  • 제40권8호
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  • Pages.1532-1541
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  • 2015
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  • 1226-4717(pISSN)
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  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
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D2D 통신을 위한 그룹핑 자원 할당 기법

Grouping Resource Allocation Scheme for D2D Communications

  • 투고 : 2015.06.02
  • 심사 : 2015.08.07
  • 발행 : 2015.08.31
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⟨ 이전 논문 다음 논문 ⟩

초록

D2D 통신은 시스템의 용량 및 스펙트럼의 효율성을 향상시키는 유망한 기술이다. 전체 스펙트럼의 효율성을 향상시킬 수 있는 이유는 기지국이 이미 셀룰러 단말에 할당한 무선 자원을 D2D 통신에 할당하여 자원을 재사용할 수 있기 때문이다. 하지만 동일한 자원을 셀룰러 및 D2D 통신이 공유함으로써 셀 내에 간섭이 발생할 수 있다. 따라서 동일한 자원을 사용하는 셀룰러 통신과 D2D 통신 간에 간섭 조정을 위한 적절한 자원 할당 기법이 필요하다. 본 논문에서는 영역 그룹 및 D2D pair 그룹화를 통해 간섭을 최소화하는 그룹핑 자원 할당 기법을 제안한다. 제안 기법의 성능 분석 결과 자원 할당에 쓰인 셀룰러 자원의 수, 자원 할당을 위한 계산량 등의 성능이 향상됨을 확인하였다.

D2D(Device-to-Device) communication is a promising technology to improve the system capacity and spectral efficiency. By sharing the same radio resources with cellular user equipments, D2D communications can significantly enhance the overall spectral efficiency. However, it may cause interference between D2D link and cellular link. So, careful resource allocation and interference coordination between them are very important and need to be properly handled. This paper proposes a radio resource allocation scheme that decreases interference through the use of area grouping and D2D pair grouping. Simulations results are provided to verify the performance improvement of the proposed scheme in terms of the number of assigned resource blocks and computational complexity.

키워드

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  3. D2D 셀룰러 네트워크에서 위치기반 자원할당 vol.42, pp.4, 2015, https://doi.org/10.7840/kics.2017.42.4.750