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1. 发明授权

US5617409A Flow control with smooth limit setting for multiple virtual circuits 失效
标题翻译：多个虚拟电路的流量控制具有平滑的极限设置
公开(公告)号：US5617409A
公开(公告)日：1997-04-01
申请号：US189398
申请日：1994-01-28
申请人： Cuneyt M. Ozveren , Hallam G. Murray, Jr. , Gregory M. Waters , Robert J. Simcoe
发明人： Cuneyt M. Ozveren , Hallam G. Murray, Jr. , Gregory M. Waters , Robert J. Simcoe
IPC分类号： H04L12/56 , H04J3/14
CPC分类号： H04L12/5601 , H04L12/5602 , H04L49/255 , H04L2012/568 , H04L2012/5681
摘要： A flow control system is disclosed, for a transmitting node and a receiving node. The transmitting node and the receiving node are linked together through multiple connections or virtual circuits. A flow control circuit in the transmitting node limits the number of data transmission units transmitted from the transmitting station, and not yet copied out of the receive buffers in the receiving node, to the total number of receive buffers in the receiving node. The flow control circuit in the transmitting node further controls the transmission of data transmission units on the multiple connections fairly, such that all connections are provided a proportional amount of the total available receive buffers in the receiving node. In an example embodiment, a global counter is used to maintain the total number of receive buffers containing data in the receiving node, and a global limit register contains the maximum number of receive buffers containing data in the receiving node allowed for a single connection. The flow control circuit further includes logic providing fair and efficient allocation of receive buffers across all virtual circuits between a transmitting node and a destination node. The flow control circuit ensures that during steady state operation, receive buffers in the receiving node, which are used to store data transmission units received from the transmitting node, are fairly divided among all active virtual circuits in the transmitting node.
摘要翻译：公开了一种用于发射节点和接收节点的流控制系统。发送节点和接收节点通过多个连接或虚拟电路链接在一起。发送节点中的流控制电路将从发送站发送的数据传输单元的数量限制为接收节点中的接收缓冲器的数量，而不是从接收节点中的接收缓冲器中复制出来。发送节点中的流控制电路进一步控制多个连接上的数据传输单元的传输，使得所有连接都被提供在接收节点中的总可用接收缓冲器的比例量。在示例实施例中，使用全局计数器来维护在接收节点中包含数据的接收缓冲器的总数，并且全局限制寄存器包含包含允许单个连接的接收节点中的数据的最大数量的接收缓冲器。流控制电路还包括提供在发射节点和目的地节点之间的所有虚拟电路的接收缓冲器的公平和有效的分配的逻辑。流量控制电路确保在稳态操作期间，用于存储从发送节点接收的数据传输单元的接收节点中的接收缓冲器在发送节点中的所有活动虚拟电路中被相当分割。

2. 发明授权

US4531238A Statistical contention control for star configured communication networks 失效
标题翻译：星形配置通信网络的统计争用控制
公开(公告)号：US4531238A
公开(公告)日：1985-07-23
申请号：US326869
申请日：1981-12-03
申请人： Eric G. Rawson , Hallam G. Murray , Ronald V. Schmidt , Lawrence C. Stewart
发明人： Eric G. Rawson , Hallam G. Murray , Ronald V. Schmidt , Lawrence C. Stewart
IPC分类号： H04B10/20 , H04B10/16 , H04B10/207 , H04L12/44 , H04B9/00
CPC分类号： H04B10/27 , H04B10/272 , H04B10/29 , H04L12/44
摘要： An active repeater for a star configured communications network includes a threshold detector for collision detection. Whenever two or more terminals simultaneously feed data into the repeater, a threshold sensitive collision detector is triggered to logically isolate the data from the output of the repeater and to logically substitute a predetermined collision signal therefor, thereby causing the competing terminals to reset to retry the transmissions at randomly selected later times.
摘要翻译：用于星形配置通信网络的主动中继器包括用于冲突检测的阈值检测器。每当两个或多个终端同时将数据馈送到中继器时，触发阈值敏感的冲突检测器将数据与中继器的输出逻辑隔离，并逻辑地替代预定的冲突信号，从而使竞争的终端重新设置以重试后续随机选择的传输。

3. 发明授权

US5088091A High-speed mesh connected local area network 失效
标题翻译：高速连接的本地区域网络
公开(公告)号：US5088091A
公开(公告)日：1992-02-11
申请号：US370285
申请日：1989-06-22
申请人： Michael D. Schroeder , Roger M. Needham , Charles P. Thacker , Andrew D. Birrell , Thomas L. Rodeheffer , Edwin H. Satterthwaite, Jr. , Hallam G. Murray, Jr.
发明人： Michael D. Schroeder , Roger M. Needham , Charles P. Thacker , Andrew D. Birrell , Thomas L. Rodeheffer , Edwin H. Satterthwaite, Jr. , Hallam G. Murray, Jr.
IPC分类号： H04L12/28 , H04L12/44 , H04L12/56
CPC分类号： H04L45/00 , H04L12/28 , H04L45/02 , H04L45/16 , H04L45/28 , H04L45/48 , H04L49/351 , H04L2012/445 , H04L49/101 , H04L49/201 , H04L49/25 , H04L49/251 , H04L49/3009
摘要： A mesh connected local area network provides automatic packet switching and routing between host computers coupled to the network. The network has a multiplicity of cut-through, nonblocking switches, each capable of simultaneously routing a multiplicity of data packets. Low host-to-host latency is achieved through the use of cut-through switches with separate internal buffers for each packet being routed. The switches are interconnected with one another and are coupled to the host computers of the network by point to point full duplex links. While each switch can be coupled to ten or more network members, i.e., switches and hosts, each link is coupled to only two network members and is dedicated to carrying signals therebetween. Whenever a new switch or link is added to the network, and whenever a switch or link fails, the switches in the network automatically reconfigure the network by recomputing the set of legal paths through the network.

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