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1. 发明申请

WO2004043027A2 CELL BASED WRAPPED WAVE FRONT ARBITER (WWFA) WITH BANDWIDTH RESERVATION 审中-公开
标题翻译：基于细胞的包裹式波前载波（WWFA）带宽预留
公开(公告)号：WO2004043027A2
公开(公告)日：2004-05-21
申请号：PCT/US2003/034682
申请日：2003-10-31
申请人： TELLABS OPERATIONS, INC. , BODUCH, Mark, E. , RANCICH, David
发明人： BODUCH, Mark, E. , RANCICH, David
IPC分类号： H04L12/56
CPC分类号： H04L49/254 , H04L47/50 , H04L49/101 , H04L49/3009
摘要： Systems and methods for cell-based wrapped wave front arbiter (WFFA) with bandwidth reservation are disclosed. The method for reserving bandwidth of a given priority using the WWFA for arbitrating bandwidth among virtual links between input and output ports, each link supporting priorities and corresponding to an arbitration unit (AU) of the WWFA generally includes performing at least one arbitration pass of a wave front of the WWFA where AUs having a reserved bandwidth request of a given priority and reserved bandwidth credit of the given priority compete for the bandwidth associated with the wave front, and where AUs not having a reserved bandwidth request of the given priority and reserved bandwidth credit of the given priority do not compete for the bandwidth, and performing at least one subsequent arbitration pass where AUs having a reserved bandwidth request of the given priority compete for the bandwidth. Each virtual link perferably supports a high priority and a low priority such that the WWFA performs four passes. Each priority of each virtual link may be associated with a bandwidth credit accumulator register indicating the level of remaining reserved bandwidth credit, a reserved bandwidth weight register for programming a predetermined level of reserved bandwidth, a request counter register for tracking the number of bandwidth requests, a rate counter register that is periodically incremented to generate reserved bandwidth credits for the bandwidth credit accumulator register, and an optional burst register having a predetermined value for limiting the maximum value of the bandwidth credit accumulator register.
摘要翻译：公开了具有带宽保留的基于小区的包裹波前仲裁器（WFFA）的系统和方法。使用用于仲裁输入和输出端口之间的虚拟链路之间的带宽的WWFA来预留给定优先级的带宽的方法，每个支持优先级并对应于WWFA的仲裁单元（AU）的链路通常包括执行至少一个其中具有给定优先级的预留带宽请求的AU和给定优先级的预留带宽信用的AU竞争与波前相关联的带宽，并且其中不具有给定优先级和预留带宽的预留带宽请求的AU 给定优先级的信用不竞争带宽，并执行至少一个后续仲裁通过，其中具有给定优先级的预留带宽请求的AU竞争带宽。每个虚拟链路都支持高优先级和低优先级，以便WWFA执行四次传递。每个虚拟链路的每个优先级可以与指示剩余预留带宽信用级别的带宽信用累加器寄存器相关联，用于编程预定级别的预留带宽的预留带宽权重寄存器，用于跟踪带宽请求数量的请求计数器寄存器，一个速率计数器寄存器，该寄存器周期性增加以产生用于带宽积分累加器寄存器的预留带宽积分，以及一个可选的具有预定值的突发寄存器，用于限制带宽积分累加器寄存器的最大值。

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