with the method of differentiated services ( diffserv) for reference, we classified network services into three classes and correspondingly classified the up transmission bandwidth of epon into three portions: reserved bandwidth, high priority bandwidth and low priority bandwidth.

the simulation results show that the proposed scheme can effectively utilize helpers' spare upload capacity, and can support large-scale on-demand services with relative low server load in the condition of lower ratio of upload bandwidth provided.

仿真实验证明，所提方案可以有效地利用helper节点资源。在上行带宽提供率较低的情况下，仍只需较低的服务器带宽便可以支持大规模的点播服务。

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in this dissertation, some key technologies in epon system are investigated, including study on structure, mpcp protocol, and band allocation algorithm, especial focused on band allocation schemes of epon up channel.

本论文主要对EPON系统的一些关键技术进行了深入的研究，包括系统的体系结构、多点控制协议、带宽分配算法的设计，特别是上行带宽分配算法上的研究。

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upstream bandwidth resource is assigned according to different t-cont priority in the algorithm.

该算法按照不同T-CONT业务的优先级顺序分配上行带宽资源。

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allocation schemes of the uplink bandwidth have attracted much attention in the epon system owing to the topology structure of onu sharing bandwidth in the uplink.

由于EPON系统上行链路多个ONU共享带宽的拓扑结构，因此系统的上行带宽分配算法一直是EPON系统讨论的热点。

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it is shown from the simulation results that the algorithm improves bandwidth utilization of uplink and ensures the qos of different services and shows satisfied delay performance.

通过仿真实验证明，本算法不仅保证了上行带宽的高效利用率，同时保证了不同业务的服务质量（QOS），具有良好的时延特性。

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in order to study the support structure of the distributed epon access dba algorithm, on the epon system upstream bandwidth allocation and scheduling mechanism typical dba algorithm theoretical research.

为了研究支持分布式EPON接入结构的DBA算法，对EPON系统的上行带宽分配调度机制和典型的DBA算法进行了理论研究。

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a improved scheme based on upstream bandwidth for pon

PON上行带宽的改进分配方案

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as the bandwidth of satellite downlink channel is limited, remote sensing image must be compressed first.

在卫星下行信道传输带宽有限的条件下，遥感图像数据必须经过压缩编码处理。

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such unsymmetry is embodied in two aspects, one is the difference between the bandwidths for uplink and downlink, and the other is the difference between common and individual characteristics of information requirement.

这种不对称性具体体现在两个方面：第一，上下行带宽的差异；第二，信息需求的共性和个性的差异。

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cable tv network of new generation has a great unsymmetry exists between bandwidths for uplink and downlink, since it is a network designed originally in the mode of broadcast transmission.

新一代有线电视网络作为原设计为广播传输模式的网络，其上下行带宽具有显著的不对称性。

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simulation indicates that the scheme proposed can improve channel throughput effectively with downlink/ uplink bandwidth controlled.

仿真结果符合数学模型，有效地提高了信道利用率，实现上下行带宽控制。

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a bandwidth allocation scheme between uplink and downlink flows in ieee 802.11 wlan

一种IEEE802·11无线局域网的上下行带宽分配策略

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also introduced a method of a epon dvb network hosting business, to achieve the best epon downward bandwidth use factor.

还提出了一种EPON网络中承载DVB业务的方法，达到最佳的EPON下行带宽利用率。

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as one of the best solutions for ftth, epon provides 1 gbit/ s upstream/ downstream bandwidth.

作为光纤到户（FTTH）的理想解决方案之一，以太无源光网络（EPON）提供了1Gbit/s的上下行带宽。

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meanwhile, best effort ( internet type) data traffic is ensured equal access and a "fair" share of the remaining ring bandwidth.

同时，最大努力（因特网类型）的数据传输也保证有平等的访问和“公平”分享剩余环的带宽。

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to reduce the delay of remote memory access, with abundant network bandwidth, we can use the spare network bandwidth while cpu runs to prefetch data from the remote memory.

为了降低DSAG这种远程内存结构增加的访存时延，我们考虑到CPU正常访存没有充分利用网络的高带宽，因此可以利用剩余的网络带宽来进行远程内存数据的预取。

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the algorithm uses a passive measurement method without any additional communications load to wireless mesh network.

该算法采用被动式测量的方法，没有给网络增加任何的开销，并且能够有效地测量出信道的剩余可用带宽。

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this scheme periodically measures the metrics in local buffer of router, and calculates the scheduling weights for fair bandwidth allocation among the queues.

该方案通过对本地节点缓存区指标的定期测量，计算得到在各队列间公平分配剩余带宽的调度权值。

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the algorithm employed the delay, residual bandwidth and server load as routing metric to guarantee the quality of service.

该算法以路径延时、剩余带宽、服务器负载这三个参量为选路依据，保证了选播路由的服务质量。

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this section explains how the queueing system distributes any remaining bandwidth.

这节解释了排队系统如何分配任何剩余带宽。

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