The invention discloses an access network bandwidth scheduling method based on the energy saving mechanism of dormancy, the total bandwidth business system can not fully meet the three types of service requests of the total bandwidth priority, fully meet the EF business, then the remaining total bandwidth allocated to AF service and BE service, the ONU bandwidth allocation for AF and BE service the request is calculated for each ONU sleep benefit factor through ONU bandwidth, then calculated the residual bandwidth for each ONU in different sleep efficiency values in ONU bandwidth allocation, by comparing to the ONU bandwidth and not to sleep the benefit of ONU bandwidth allocation value to determine whether the allocation of bandwidth to ONU, in order to get the best sleep benefit. When the remaining total bandwidth is allocated, the QoS can also be guaranteed by setting the priority balance factor so as to improve the overall performance of the system. Moreover, the invention adopts the soft control method to achieve the energy saving effect without increasing the hardware cost.
【技术实现步骤摘要】
本专利技术属于接入网
,更为具体地讲,涉及。
技术介绍
光纤宽带接入网中的PON (Passive Optical Network,无源光网络)系统结构主要由中心局的光线路终端(0LT:0ptical Line Terminal)、包含无源光器件的光分配网(0DN:0ptical Distribution Network)、用户端的光网络单兀(ONU:0ptical NetworkUnit)组成,通常采用点到多点的树型拓扑结构。在下行方向,IP数据、语音、视频等多种业务由位于中心局的0LT,采用广播方式通过ODN中的1:N无源光分配器分配到PON上的所有ONU单元。在上行方向,来自各个ONU的多种业务信息互不干扰地通过ODN中的1:N无源光合路器稱合到同一根光纤,最终传输到位于局端的OLT接收端,类似于点到点的结构。在高速率、大带宽需求的驱动下,接入网带宽的需求量呈指数增长,这导致采用PON技术的光纤宽带接入网取得了迅猛的发展,但其系统过高的能耗问题也逐渐引起了广泛的关注。目前国内外研究主要集中在物理层节能方式和数据链路层节能方式,具体如下:a)基于物理层的节能方式基于物理层的节能方式无需改变上层协议,通常改进一些物理层的设备或器件结构,如 Claudio BIANCO, Flavio CUCCHIETTI 等在“Energy consumption trends in theNext Generation Access Network-a Telco perspective”一文中通过不断改进集成电路技术达到节能效果;EITETSU ...
【技术保护点】
一种基于休眠节能机制的接入网带宽调度方法,其特征在于,包括以下步骤:S1:光线路终端OLT接收来自光网络单元ONU对各个业务的带宽请求,记为带宽请求矩阵B:B=BEF,1···BEF,i···BEF,NBAF,1···BAF,i···BAF,NBBE,1···BBE,i···BBE,N其中,Bm,i表示第i个ONU对m类业务的带宽请求,m∈{EF,AF,BE},EF表示该业务类型为加速转发型业务,AF表示该业务类型为确保转发型业务,BE表示该业务类型为尽力转发型业务,i=1,2,…,N,N表示ONU的数量;系统总业务带宽记为Wt,并且Σi=1NBEF,i<Wt<Σi=1N(BEF,i+BAF,i+ ...
【技术特征摘要】
1.一种基于休眠节能机制的接入网带宽调度方法,其特征在于,包括以下步骤: S1:光线路终端OLT接收来自光网络单元ONU对各个业务的带宽请求,记为带宽请求矩阵B: 2.根据权利要求1所述的基于休眠节能机制的接入网带宽调度方法,其特征在于,...
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