Journal of Digital Contents Society (디지털콘텐츠학회 논문지)

Digital Contents Society (한국디지털콘텐츠학회)
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Fixed Multi-Thread Polling based Dynamic Bandwidth Allocation in Long-Reach PON

LR-PON에서 고정형 다중 스레드 기반의 동적대역할당

  • Choi, Su-il (School of Electronics and Computer Engineering, Chonnam National University,) ;
  • Kim, Jinsul (School of Electronics and Computer Engineering, Chonnam National University,)
  • 최수일 (전남대학교 전자컴퓨터공학부) ;
  • 김진술 (전남대학교 전자컴퓨터공학부)
  • Received : 2017.09.21
  • Accepted : 2017.10.25
  • Published : 2017.10.31
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Abstract

Long-Reach PON (LR-PON) is a broadband access network using passive optical network (PON) technology which the reach is extended to 100 km or higher. A major challenge in LR-PON is that the propagation delay between OLT and ONUs is increased by a very significant amount. To effectively and fairly distribute the upstream bandwidth dynamically in LR-PON, we propose a new periodic and multi-thread polling based dynamic bandwidth allocation (DBA) algorithm. We compare the proposed algorithm with traditional DBAs and show its advantage on average packet delay. Numerical results are analyzed under varying offered loads.

LR-PON은 수동형 광가입자망 기술을 사용하여 서비스 영역이 100 km이상 확장된 광대역 가입자망이다. 서비스 영역이 확장된 LR-PON의 경우 OLT와 ONU들간 전송 지연시간이 큰 폭으로 증가하는 문제점으로 인해 효과적인 상향 대역할당에 어려움이 있다. 본 논문에서는 LR-PON망에서 동적인 상향 대역 할당을 효과적이며 공정하게 하기 위해서, 고정형 폴링 주기를 갖는 다중 스레드 기반의 새로운 동적대역할당 방안을 제안한다. 제시한 동적대역할당 방안의 우수성을 입증하기 위하여 상향 트래픽의 평균 지연시간을 기존의 DBA 방안들과 비교하였다. 특히, CoS 특성 분석을 위하여 다양한 트래픽 로드별로 지연 특성을 분석하였다.

Keywords

References

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