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    • 1. 发明公开
    • 광대역 수동 광 네트워크들을 위한 동적 대역폭 할당 및서비스 구별
    • 宽带无源光网络的动态带宽分配和服务差异
    • KR1020080088351A
    • 2008-10-02
    • KR1020077026441
    • 2006-04-17
    • 뉴저지 인스티튜트 오브 테크놀로지
    • 안사리,니르완루오,유안키우
    • H04B10/2581H04L12/26H04L5/12
    • H04J3/1694H04J14/0226H04J14/0227H04J14/0247H04J14/0252H04J14/0282H04L47/15H04L47/2433H04L47/50H04L47/70H04L47/788H04L47/805H04L47/823H04Q11/0067H04Q2011/0064H04Q2011/0084
    • A dynamic upstream bandwidth allocation scheme is disclosed, i.e., limited sharing with traffic prediction (LSTP), to improve the bandwidth efficiency of upstream transmission over PONs. LSTP adopts the PON MAC control messages, and dynamically allocates bandwidth according to the on-line traffic load. The ONU bandwidth requirement includes the already buffered data and a prediction of the incoming data, thus reducing the frame delay and alleviating the data loss. ONUs are served by the OLT in a fixed order in LSTP to facilitate the traffic prediction. Each optical network unit (ONU) classifies its local traffic into three classes with descending priorities: expedited forwarding (EF), assured forwarding (AF), and best effort (BE). Data with higher priority replace data with lower priority when the buffer is full. In order to alleviate uncontrolled delay and unfair drop of the lower priority data, the priority-based scheduling is employed to deliver the buffered data in a particular transmission timeslot. The bandwidth allocation incorporates the service level agreements (SLAs) and the on-line traffic dynamics. The basic limited sharing with traffic prediction (LSTP) scheme is extended to serve the classified network traffic.
    • 公开了一种动态上行带宽分配方案,即与业务预测(LSTP)的有限共享,以提高PON上行传输的带宽效率。 LSTP采用PON MAC控制消息,根据在线流量负载动态分配带宽。 ONU带宽要求包括已经缓冲的数据和输入数据的预测,从而减少帧延迟并减轻数据丢失。 ONU在LSTP中以固定的顺序由OLT服务,以便于流量预测。 每个光网络单元(ONU)将其本地流量分为具有降序优先级的三个类:加速转发(EF),保证转发(AF)和尽力而为(BE)。 当缓冲区满时,具有较高优先级的数据将以较低的优先级替换数据。 为了减轻低优先级数据的不受控制的延迟和不公平的丢弃,采用基于优先级的调度来在特定的传输时隙中传送缓冲的数据。 带宽分配包含服务级别协议(SLA)和在线流量动态。 流量预测(LSTP)方案的基本有限共享扩展到分类网络流量。