ZHANG Xiao-min, LI Wei-min, LI Fa-qing. Improving dynamic bandwidth distribution algorithm in EPON[J]. Journal of Applied Optics, 2009, 30(6): 1016-1019.
Citation: ZHANG Xiao-min, LI Wei-min, LI Fa-qing. Improving dynamic bandwidth distribution algorithm in EPON[J]. Journal of Applied Optics, 2009, 30(6): 1016-1019.
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Improving dynamic bandwidth distribution algorithm in EPON

  • 1.

    Telecommunication Engineering Institute,Air Force Engineering University,Xi’an 710077,China;

  • 2.

    Shaanxi Province Productivity Promotion Center,Xi’an 710077,China

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    • Abstract
  • Dynamic bandwidth allocation of the uplink is a hot technique in EPON system. By analyzing the merits and weaknesses of the existing algorithms, a novel dynamic bandwidth allocation algorithm is proposed, which supports differentiating service levels and guarantees the quality of the service. The new algorithm determines the polling cycle, allocates the requested bandwidth to high-priority services, and allocates bandwidth to middle and low priority sevices by weight. It also takes the reallocation of the excess bandwidth into account. Simulation results show that this scheme can meet the bandwidth need of high priority service while taking low priority service into account. The algorithm makes the distribution of system bandwidth more rational and improves the efficiency of up-link bandwidth and the quality of service.
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    • References (1)
  • ［1］KRAMER G, MUKHERJEE B, PESAVENTO G. Interleaved polling with adaptive cycle time(IPACT): a dynamic-bandwidth distribution scheme in an optical access-network［J］. Photonic Network Communications,2002,4(1):89-107.
    ［2］KRAMER G, MUKHERJEE B, PESAVENTO G. Ethernet PON(ePON): design and analysis of an optical access-network［J］. Photonic Network Communications,2001,3(3):307-319.
    ［3］CHOI S. Cyclic polling-based dynamic bandwidth allocation for differentiated classes of service in Ethernet passive optical networks［J］. Photonic Network Communications,2004,7(1):87-96.
    ［4］徐宝才,董光辉.EPON中一种改进的DBA算法［J］.中国新技术新产品,2009(1):20.
    XU Bao-cai,DONG Guang-hui.An improved dynamic bandwidth allocation algorithm in EPON［J］.China New Technologies and Products,2009(1):20. (in Chinese with an English abstract)
    ［5］李精华,曾丽珍,李云. EPON上行信道中的动态带宽分配算法研究［J］. 光通信技术,2006,30(1):17-19.
    LI Jing-hua,ZENG Li-zhen,LI Yun. The research of dynamic bandwidth allocation algorithm in the upstream channel of EPON［J］. Optical Communication Technology,2006,30(1):17-19. (in Chinese with an English abstract)
    ［6］吴欢.一种在EPON中支持多业务接入的DBA公平算法［J］. 光通信研究,2007(3):13-15.
    WU Huan. A fair DBA algorithm for multiservice access in EPON［J］. Study on Optical Communications,2007(3):13-15. (in Chinese with an English abstract)
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