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1. 发明授权

US07002911B1 Flow control mechanism 失效
公开(公告)号：US07002911B1
公开(公告)日：2006-02-21
申请号：US09353996
申请日：1999-07-15
申请人： John Walter Linville , Brad Alan Makrucki , Edward Stanley Suffern , Jeffrey Robert Warren
发明人： John Walter Linville , Brad Alan Makrucki , Edward Stanley Suffern , Jeffrey Robert Warren
IPC分类号： H04L12/24 , H04L12/56
CPC分类号： H04L49/50 , H04L49/351
摘要： Data bandwidth on a congested link of a Carrier Sense Multiple Access with Collision Detection (CSMA/CD) network, is controlled by a Pause MAC Frame which carries information identifying devices causing the problem on the link. The Recipient of the Pause MAC Frame can use the information to deactivate selected devices on the congested link. As a consequence, the data bandwidth is reduced without shutting down the link.

2. 发明授权

US06170022A Method and system for monitoring and controlling data flow in a network congestion state by changing each calculated pause time by a random amount 失效
标题翻译：通过将每个计算的暂停时间改变一个随机量来监测和控制网络拥塞状态中的数据流的方法和系统
公开(公告)号：US06170022A
公开(公告)日：2001-01-02
申请号：US09054768
申请日：1998-04-03
申请人： John Walter Linville , Brad Alan Makrucki , Edward Stanley Suffern , Jeffrey Robert Warren
发明人： John Walter Linville , Brad Alan Makrucki , Edward Stanley Suffern , Jeffrey Robert Warren
IPC分类号： G06F1300
CPC分类号： H04L47/10 , H04L47/266 , H04L47/30 , H04L49/351 , H04L49/50
摘要： Flow control is implemented at a given node in a network of LAN switches by having the node monitor the occupancy levels of buffers or queues. When a buffer is found to be occupied or filled beyond a predetermined threshold level, a pause command is generated for the source currently supplying traffic to the buffer. A pause time PT is calculated using an equation which takes into account: the transmission rate of the identified source, the transmission rate of the output link servicing the congested buffer and queue length that can be occupied without a congestion condition being declared. To reduce the chance that queue lengths will “oscillate” about their threshold point due to multiple sources resuming transmission at the same time, each calculated pause time is adjusted to a randomly selected value PT(ran) falling within a range of PT±kPT where k may be on the order of fifty percent.
摘要翻译：通过使节点监视缓冲区或队列的占用水平，在LAN交换机的网络中的给定节点处实现流控制。当发现缓冲器被占用或超过预定阈值电平时，为当前向缓冲器提供业务的源产生暂停命令。使用考虑到的方程式来计算暂停时间PT：所识别的源的传输速率，服务于拥塞缓冲区的输出链路的传输速率和可以在没有宣告拥塞的情况下被占用的队列长度。为了减少队列长度由于多个源同时恢复传输而“振荡”其机会，每个计算的暂停时间被调整为落在PT±kPT范围内的随机选择值PT（ran），其中 k可能在百分之五十左右。

3. 发明授权

US6026075A Flow control mechanism 失效
标题翻译：流量控制机构
公开(公告)号：US6026075A
公开(公告)日：2000-02-15
申请号：US806187
申请日：1997-02-25
申请人： John Walter Linville , Brad Alan Makrucki , Edward Stanley Suffern , Jeffrey Robert Warren
发明人： John Walter Linville , Brad Alan Makrucki , Edward Stanley Suffern , Jeffrey Robert Warren
IPC分类号： H04L12/56 , H04J3/14 , H04L12/413
CPC分类号： H04L49/50 , H04L49/351
摘要： Data bandwidth on a congested link of a Carrier Sense Multiple Access with Collision Detection (CSMA/CD) network, is controlled by a Pause MAC Frame which carries information identifying devices causing the problem on the link. The Recipient of the Pause MAC Frame can use the information to deactivate selected devices on the congested link. As a consequence, the data bandwidth is reduced without shutting down the link.
摘要翻译：具有冲突检测（CSMA / CD）网络的载波侦听多路访问（CSMA / CD）网络的拥塞链路上的数据带宽由暂停MAC帧控制，暂停MAC帧携带识别导致链路上的问题的设备的信息。暂停MAC帧的收件人可以使用该信息来停用拥塞链路上的所选设备。因此，在不关闭链路的情况下减少数据带宽。

4. 发明授权

US06208622B1 Traffic flow cutover to virtual connection transport 失效
标题翻译：流量切换到虚拟连接传输
公开(公告)号：US06208622B1
公开(公告)日：2001-03-27
申请号：US08963793
申请日：1997-11-04
申请人： Brad Alan Makrucki
发明人： Brad Alan Makrucki
IPC分类号： H04L100
CPC分类号： H04L45/12 , H04L45/123 , Y10S707/99952
摘要： Methods, apparatus and computer products are provided for allocating network resources for data transport between a source network node and a destination network node by selecting a transport mechanism from a plurality of transport mechanisms based upon a prediction of the cost of the utilization of the transport mechanism so as to provide the transport mechanism having the lowest predicted cost.
摘要翻译：提供方法，装置和计算机产品，用于通过基于传输机制的使用成本的预测从多个传输机制中选择传输机制来分配用于源网络节点和目的地网络节点之间的数据传输的网络资源从而提供具有最低预测成本的运输机构。

5. 发明授权

US06400686B1 Method and apparatus for network flow control 有权
标题翻译：网络流量控制的方法和装置
公开(公告)号：US06400686B1
公开(公告)日：2002-06-04
申请号：US09585830
申请日：2000-06-01
申请人： Anoop Ghanwani , Brad Alan Makrucki , Ken Van Vu
发明人： Anoop Ghanwani , Brad Alan Makrucki , Ken Van Vu
IPC分类号： H04J116
CPC分类号： H04L47/263 , H04L47/22 , H04L47/28 , Y02D50/10
摘要： A data transfer flow control system for a packet communications system includes a plurality of nodes interconnected by transmission links. The rate at which a sender node transmits information to a destination node in a network is modified in accordance with congestion information returned to the sender node from nodes along the path of the transmission or from the information receiver. The rate change for information being sent from the sender node is modified based upon the amount of elapsed time occurring since the last rate change of the same type. In first and second examples, the rate change is implemented in accordance with exponential and linear relationships, respectively, between the modified flow rate and the elapsed time since the last rate change.
摘要翻译：用于分组通信系统的数据传输流控制系统包括通过传输链路互连的多个节点。发送方节点向网络中的目的地节点发送信息的速率根据从发送路径的节点或从信息接收机返回给发送方节点的拥塞信息进行修改。基于从相同类型的上一次速率变化以来发生的经过时间量，修改从发送者节点发送的信息的速率变化。在第一和第二示例中，速率变化分别根据改变的流量与上一次速率变化之后的经过时间之间的指数和线性关系来实现。

6. 发明授权

US6075769A Method and apparatus for network flow control 失效
公开(公告)号：US6075769A
公开(公告)日：2000-06-13
申请号：US978831
申请日：1997-11-26
申请人： Anoop Ghanwani , Brad Alan Makrucki , Ken Van Vu
发明人： Anoop Ghanwani , Brad Alan Makrucki , Ken Van Vu
IPC分类号： G01R31/08 , G06F15/16 , H04J1/16 , H04J3/14 , H04L1/00
CPC分类号： H04L47/263 , H04L47/22 , H04L47/28 , Y02B60/31
摘要： A data transfer flow control system for a packet communications system includes a plurality of nodes interconnected by transmission links. The rate at which a sender node transmits information to a destination node in a network is modified in accordance with congestion information returned to the sender node from nodes along the path of the transmission or from the information receiver. The rate change for information being sent from the sender node is modified based upon the amount of elapsed time occurring since the last rate change of the same type. In first and second examples, the rate change is implemented in accordance with exponential and linear relationships, respectively, between the modified flow rate and the elapsed time since the last rate change.

7. 发明授权

US06657954B1 Adapting receiver thresholds to improve rate-based flow control 有权
标题翻译：适应接收器阈值以改进基于速率的流量控制
公开(公告)号：US06657954B1
公开(公告)日：2003-12-02
申请号：US09282691
申请日：1999-03-31
申请人： Raymond F. Bird , Ralph Benjamin Case , Brad Alan Makrucki , James John Martin
发明人： Raymond F. Bird , Ralph Benjamin Case , Brad Alan Makrucki , James John Martin
IPC分类号： H04L1226
CPC分类号： H04L47/29 , H04L47/10 , H04L47/11 , H04L47/12 , H04L47/263 , Y02D50/10
摘要： A technique for adapting receiver thresholds to improve rate-based flow control in a data communications network. With this invention, the flow control process becomes self-calibrating such that threshold values are dynamically adjusted to adapt to current network conditions, without requiring user intervention. Several different indicators of network conditions are monitored, and appropriate adjustments are made to the threshold(s) upon detecting these specific indicators. One monitor enables the threshold to increase when the network is uncongested, enabling the sender to increase its transmission rate. Conversely, the threshold is lowered if the network is congested, so that the transmission rate will be decreased. Another monitor balances bandwidth allocation among connections sharing a bottleneck resource, by lowering the threshold (and therefore decreasing the send rate) when a connection uses a high share of the resource. A third monitor detects the presence of traffic from protocols not using adaptive receiver thresholds, and adjusts the threshold (including an upper and lower threshold bound) in order to compete fairly for resources with these other protocols. The monitors may be implemented individually or in combination.
摘要翻译：一种适应接收机阈值以改进数据通信网络中基于速率的流量控制的技术。利用本发明，流量控制过程变为自校准，使得阈值被动态调整以适应当前网络状况，而不需要用户干预。监测网络条件的几个不同指标，并在检测到这些具体指标时对阈值进行适当的调整。一个监视器使得当网络不通信时，阈值增加，使发送方能够增加其传输速率。相反，如果网络拥塞，则阈值降低，从而传输速率降低。另一台显示器通过降低连接使用高资源份额的阈值（从而降低发送速率）来平衡共享瓶颈资源的连接之间的带宽分配。第三个监视器检测来自不使用自适应接收机阈值的协议的流量的存在，并且调整阈值（包括上限和下限阈值界限），以便与这些其他协议公平竞争资源。监视器可以单独地或组合地实现。

8. 发明授权

US06587436B1 Method and apparatus for allocation of available bandwidth 失效
标题翻译：用于分配可用带宽的方法和装置
公开(公告)号：US06587436B1
公开(公告)日：2003-07-01
申请号：US08977220
申请日：1997-11-24
申请人： Ken Van Vu , Anoop Ghanwani , Brad Alan Makrucki
发明人： Ken Van Vu , Anoop Ghanwani , Brad Alan Makrucki
IPC分类号： H04L1228
CPC分类号： H04L12/5602 , H04L47/26 , H04L47/263 , H04L2012/5631
摘要： A data transfer flow control system for a packet ATM communications system includes a plurality of nodes interconnected by transmission links. Available bandwidth allocation for data packets or cells is improved by defining a Nrm parameter to be the product of an allowable cell rate and a sampling period. Nrm is related to the number of data cells being transmitted between resource management cells in a transmission session, and is set to a number that is independent of round trip times between source and destination nodes, but varying with the allowable cell rate of the source. The allocation fairness problem is solved by normalizing the Nrm value to ensure that the inter-RM cell times for all sessions are fixed at a predetermined time interval. The selection of the predetermined time interval value is a trade-off between network overhead and the responsiveness of the traffic source to network congestion. The predetermined time interval is a function of link speed, buffer size and “burstiness” level of real time traffic sources.
摘要翻译：用于分组ATM通信系统的数据传输流控制系统包括通过传输链路互连的多个节点。通过将Nrm参数定义为允许的单元速率和采样周期的乘积，可以提高数据包或单元的可用带宽分配。 Nrm与在传输会话中的资源管理单元之间传输的数据单元的数量相关，并且被设置为与源节点和目的地节点之间的往返时间无关的数量，但是随着源的容许信元速率而变化。通过归一化Nrm值来解决分配公平性问题，以确保所有会话的RM小区时间以预定的时间间隔被固定。预定时间间隔值的选择是网络开销与流量源对网络拥塞的响应性之间的权衡。预定时间间隔是链路速度，缓冲器大小和实时流量源的“突发性”级别的函数。

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