Under the wireless communication network environment , based on the average queue length and waiting time , an improved random early detection ( red ) algorithm is proposed 摘要在无线通信网络环境下，提出了一种改进的基于平均队列长度和等待时间的随机提前检测算法。
Each of these objects has an associated set of counters that measure device usage , queue lengths , delays , and other indicators of throughput and internal congestion 每个对象都有一个相关的的计数器集，用于测量设备使用情况、队列长度、延时情况，另外还有吞吐量及内部拥塞指示器。
In this model , the rules of updating the node throughput and the packet queue length is deigned , and the probability of reducing the throughput is also defined for describing the node random behaviors 制定了节点吞吐量和分组队列长度的更新规则，引入了减速概率来模拟节点发送分组的随机行为。
The simulation results show that this algorithm can significantly improve the quality - of - service ( qos ) performances in terms of low delay , small buffer and high utilization 仿真实验表明，所提出的算法能够准确地对实时可变比特率视频流量进行预测，有效地降低排队时延，减小队列长度并提高带宽利用率。
The method adopted the self - discarding packet technique that was a means of determining transfer by comparing the queue length of the transiting router with a specified queue value on the packet 该方法采用数据包丢失技术，通过比较传送的数据报文中的特殊队列值和所经过的路由器中数据包的排队队列长度值来决定是否对当前数据报文丢弃。
However , with many burst traffic simultaneously arriving at a node , the queue length may become larger and buffer overflow in a moment , or high - speed link is emerged into slower one , there will be in congestion 然而，当多个突发业务同时到达一个节点时，缓存队列长度迅速增加，在极短的时间内出现缓冲溢出，或高速链路接入慢速网络中引起输入链路速率大于输出链路速率，则导致网络拥塞。
Although the simplicity of binary flow control is very attractive , the queue length and allowed cell rate ( acr ) controlled by the standard efci algorithm oscillate with great amplitude , which must have negative impact on the performance , so its applicability was doubted 尽管二进制abr流量控制的简洁性具有相当的吸引力，但标准的efci算法控制的队列长度和允许信元速率( acr )却易出现大幅振荡的现象，这势必会降低链路的利用率，严重影响交换机的性能。
It is found ecn could n ' t solve the problem that the sender responds to congestion slowly , and the average queue length of router is sensitive to the static parameters of ecn . in chapter four we propose an algorithm called fecn , which provides congestion control and indication messages in router , so that the sender could response to congestion in good time . this algorithm can also adjust the max drop probability according to the active conne Ik的特性，而且平均队列长度和网络吞吐量对ecn的静态参数较为敏感，因此本文在第4章中提出了一种fecn算法，该算法在路山器处提供拥塞控制和指示机制，使源端能够快速响应路由器发回的拥塞指示消息，调整发送速率，避兔拥塞的发生，该算法还可以通过估计链路中的活动连接数动态调整最大丢弃概率。
We use a colorful noise to describe traffic flow and regard it as the uncontrolled input ( equaled to noise ) . then we use the multi - rate sampling pi controller to eliminate the error caused by noise , and make the length of queue stabilize at the threshold . the availability of the strategies and stability of systems are proved by doing some analysis and simulation 文中我们将一有色噪声看作不可控输入的扰动,采用基于pi的多采样速率控制器以消除由此不可控输入所造成的对系统输出(交换节点缓冲区队列长度)误差的影响,使得系统输出(队列长度)稳定在阈值附近。
With regard to the flow regulation of the best - effort traffic , the controllable traffic in high speed computer communication networks , the present paper proposes a novel control theoretic approach that designs a proportional - integrative ( pi ) controller based on multi - rate sampling for congestion controlling . based on the traffic model of a single node and on system stability criterion , it is shown that this pi controller can regulate the source rate on the basis of the knowledge of buffer occupancy of the destination node in such a manner that the congestion - controlled network is asymptotically stable without oscillation in terms of the buffer occupancy of the destionation node ; and the steady value of queue length is consistent with the specified threshold value 本文从控制理论的角度出发,针对计算机高速互联网中最大服务交通流即能控交通流的调节问题提出了一种基于多速率采样的具有比例积分( pi )控制器结构的拥塞控制理论和方法,在单个节点的交通流的模型基础上,运用控制理论中的系统稳定性分析方法,讨论如何利用信终端节点缓冲占有量的比例加积分的反馈形式来调节信源节点的能控交通流的输入速率,从而使被控网络节点的缓冲占有量趋于稳定;同时使被控网络节点的稳定队列长度逼近指定的门限值。
