한국멀티미디어학회논문지 (Journal of Korea Multimedia Society)

  • 제19권12호
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  • Pages.1992-1999
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  • 2016
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  • 1229-7771(pISSN)
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  • 2384-0102(eISSN)
한국멀티미디어학회 (Korea Multimedia Society)
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Adaptive ARQ Method for Enhancements of LTE MAC Protocol

  • Jung, Yonghak (Mobian Co., Ltd.) ;
  • Kwon, Youngmi (Dept. of Radio & Information Communications Engineering, Chungnam National University)
  • 투고 : 2016.10.10
  • 심사 : 2016.12.06
  • 발행 : 2016.12.30
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초록

In layered communication architecture, each layer is designed to service its own functions to higher layer while getting serviced by lower layer. Usually layered architectures are not optimized in a total view of whole services and functions. So cross layer design pursues performance enhancements by optimizing in various ways. In LTE, MAC layer uses HARQ mechanism and RLC layer uses ARQ mechanism for retransmission. According to the 3GPP 36.331 specification, two layers' cooperation may not happen in an optimized way. This paper suggests an adaptive MAC layer approach which RLC layer's function might be initiated in MAC layer in advance to utilize MAC layer's idling wasting time for RLC layer's next decision. This adaptive ARQ method in MAC layer speeds up the next retransmission and reduces the overall transmission time. Emulation shows the improved performance in total retransmission time and retransmission success ratio. In wireless shadow area, the retransmission occurs frequently. Our approach has strong points in this poor wireless condition.

키워드

참고문헌

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피인용 문헌

  1. LTE 무선통신을 활용한 TV 생방송 중계화면 안정화 비트레이트 조정 연구 vol.21, pp.3, 2018, https://doi.org/10.9717/kmms.2018.21.3.415