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1.发明授权Memory and apparatus for input based control of discards in a lossy packet network 有权用于有损分组网络中丢弃物的基于输入的控制的方法和装置公开(公告)号：US06304552B1
公开(公告)日：2001-10-16
申请号：US09151709
申请日：1998-09-11
IPC分类号： H04L1226
摘要： The present invention relates to a lossy switch for processing data units, for example IP data packets. The switch can be implemented as a contained network that includes a plurality of input ports, a plurality of output ports and a lossy switch fabric capable of establishing logical pathways to interconnect a certain input port with a certain output port. A characterizing element of the switch is its ability to control the discard of data packets at a transport point within the switch. This control mechanism prevents and reduces congestion which may occur within the switch fabric and at the level of the input and output ports. The system also supports priorities, routing HI priority request data packets over the switch fabric before LO priority request data packets, and discarding LO priority data packets first when controlling congestion.
摘要翻译： 本发明涉及用于处理数据单元（例如IP数据分组）的有损开关。 交换机可以被实现为包含多个输入端口，多个输出端口和有损交换机结构的包含网络，其能够建立将特定输入端口与特定输出端口互连的逻辑路径。 交换机的特征元素是其在交换机内的传输点处控制丢弃数据分组的能力。 该控制机制可以防止和减少交换机结构内部和输入和输出端口级别可能发生的拥塞。 该系统还支持优先级，在LO优先级请求数据包之前通过交换机结构路由优先级高的请求数据包，并且在控制拥塞时首先丢弃LO优先级数据包。
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2.发明授权Method and apparatus for establishing a plurality of simultaneous conferences in a PCM switching system 失效用于在PCM交换系统中建立多个同时会议的方法和装置
公开(公告)号：US3984643A
公开(公告)日：1976-10-05
申请号：US571363
申请日：1975-04-24
摘要： A pair of interchangeable memories is provided, one of which receives a PCM frame while simultaneously transmitting one, while the other of which, containing the previous frame, outputs the channel bits for parallel processing. Each simultaneous conference is assigned a temporary storage location in which the associated channels are accumulated to yield the total conference signal. Subsequently, each channel is subtracted from its conference total to produce the final conference signal. The final conference signals replace the unprocessed frame in the memory where, at the end of the current frame, it is interchanged with the other memory. And so on.
摘要翻译： 提供一对可互换的存储器，其中一个可同时发送一个PCM帧，而另一个存储器包含前一帧，输出通道位用于并行处理。 每个同时的会议都被分配一个临时存储位置，其中相关联的信道被累积以产生总会议信号。 随后，从其会议总数中减去每个信道以产生最终的会议信号。 最后的会议信号取代了存储器中未处理的帧，在当前帧结束时，它与另一个存储器互换。 等等。
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公开(公告)号：US07742420B2
公开(公告)日：2010-06-22
申请号：US11222919
申请日：2005-09-09
IPC分类号： H04L12/28
CPC分类号： H04L47/27 , H04L1/16 , H04L47/10 , H04L47/263 , H04L69/16 , H04L69/162 , H04L69/163 , Y02D50/10
摘要： The present invention relates to a transmission device implementing a flow control mechanism for aggregate trunks. The transmission device can be implemented as a router that includes an input for receiving aggregate traffic streams, an output for releasing the aggregate traffic streams to a destination point and a control unit capable to regulate the rate of release of packets from the output. Specifically, the flow control operation effected by the control unit is dependent on receipt of acknowledgement messages issued at the destination point, each acknowledgement message confirming the receipt of one or more particular packets at the destination point. The control unit will continuously increase the packet sending rate until a packet is lost in the network between the transmission device and the destination point. On detection of packet loss, based on the lack of one or more corresponding acknowledgement messages from the destination point, the control unit will reduce the packet sending rate.
摘要翻译： 本发明涉及一种实现集束干线的流量控制机构的传动装置。 发送装置可以实现为路由器，其包括用于接收聚合业务流的输入，用于将聚合业务流释放到目的地点的输出，以及能够调节分组从所述输出释放速率的控制单元。 具体地说，由控制单元执行的流控制操作取决于在目的地点发出的确认消息的接收，每个确认消息确认在目的地点处接收到一个或多个特定分组。 控制单元将不断增加分组发送速率，直到分组在传输设备和目的地点之间的网络中丢失。 在检测到分组丢失时，基于从目的地点缺少一个或多个相应的确认消息，控制单元将降低分组发送速率。
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公开(公告)号：US4069399A
公开(公告)日：1978-01-17
申请号：US632548
申请日：1975-11-17
CPC分类号： H04Q11/0407
摘要： A TDM PCM communication system includes a plurality of user terminals, a switching network and a CPU for controlling the establishment of transmission paths between the user terminals and the switching network for the transfer of information between predetermined ones of the user terminals. An incoming path carries information bits from the user terminals to the switching network and an outgoing path carries information bits from the switching network to the user terminals. The switching network includes means for transferring single information bits each residing in a time slot period from the incoming path to the outgoing path. The transferring means includes an exchange means for effecting a bilateral exchange of information bits in fixed pairs of time slot periods, whereby paths for information bit transmission are periodically provided between ones of the user terminals, as determined by the CPU. PCM words are thereby exchanged bit by bit between user terminals enabled in fixed pairs of time slot periods.
摘要翻译： TDM PCM通信系统包括多个用户终端，交换网络和CPU，用于控制用户终端与交换网络之间的传输路径的建立，以便在预定的用户终端之间传送信息。 输入路径将用户终端的信息位传送到交换网络，并且输出路径将信息比特从交换网络传送到用户终端。 交换网络包括用于将每个驻留在时隙周期中的单个信息比特从传入路径传送到输出路径的装置。 传送装置包括交换装置，用于以固定的时隙周期对信息比特进行双向交换，由CPU确定的用户终端之间周期性地提供用于信息比特传输的路径。 因此，以固定的时隙周期对使能的用户终端之间逐位地交换PCM字。
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5.发明授权Method and apparatus for management of bandwidth in a data communication network 失效用于在数据通信网络中管理带宽的方法和装置公开(公告)号：US06233245B1
公开(公告)日：2001-05-15
申请号：US08997778
申请日：1997-12-24
IPC分类号： H04L1228
CPC分类号： H04L47/521 , H04L47/50 , H04L47/52 , H04L47/6215 , H04L2012/5618 , H04L2012/5667 , H04Q3/0091
摘要： The present invention relates to the field of data communication networks. More specifically, it pertains to devices and methods for the management of bandwidth on links between routing nodes in data networks. The system is particularly useful for reducing congestion caused by high volume traffic streams. The invention provides a novel router that separates traffic on the basis of data type into separate queues buffers. The various queue buffers are associated with virtual output ports on a common physical link. A scheduler regulates the data release from the queue buffers into the physical link to control the bandwidth portion that is made available to each type of data.
摘要翻译： 本发明涉及数据通信网络领域。 更具体地说，它涉及用于在数据网络中的路由节点之间的链路上管理带宽的设备和方法。 该系统对于减少由大量业务流引起的拥塞特别有用。 本发明提供了一种新颖的路由器，其将基于数据类型的业务分离成独立的队列缓冲器。 各种队列缓冲区与公共物理链路上的虚拟输出端口相关联。 调度器调度从队列缓冲区到物理链路的数据释放，以控制对每种数据类型可用的带宽部分。
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公开(公告)号：US6023456A
公开(公告)日：2000-02-08
申请号：US818612
申请日：1997-03-14
CPC分类号： A61F2/88 , A61F2/856 , A61F2/91 , A61F2/915 , H04L47/10 , H04L47/2441 , H04Q11/0478 , A61F2/885 , A61F2002/91541 , A61F2002/9155 , A61F2210/0019 , A61F2250/006 , H04L2012/5632 , H04L2012/5638 , H04L2012/564 , H04L2012/5645 , H04L2012/5651 , H04L2012/5667 , H04L69/16
摘要： Multi-media networks will require that a data flow be given certain quality-of-service (QOS) for a network connection but pre-negotiation of this sort is foreign to the current data networking model. The real time traffic flow in the data network requires distinct limits on the tolerance to delay, and the variations in that delay. Interactive voice and video demand that the total delay does not exceed the threshold beyond which human interaction is unacceptably impaired. The present invention allows the network to discover the nature of the service for each traffic flow, classifies it dynamically, and exercises traffic conditioning by means of such techniques as admission control and scheduling when delivering the traffic downstream to support the service appropriately.
摘要翻译： 多媒体网络将要求为网络连接提供一定数量的服务质量（QOS），但是这种类型的预先协商对于当前的数据网络模型来说是外在的。 数据网络中的实时流量需要对延迟容限以及该延迟的变化有明显的限制。 交互式语音和视频要求总延迟不超过人为交互不可接受的障碍。 本发明允许网络发现每个业务流的业务性质，对其进行动态分类，并在下行传输业务时适当地支持业务，借助于接纳控制和调度等技术来进行业务调节。
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公开(公告)号：US5978376A
公开(公告)日：1999-11-02
申请号：US786949
申请日：1997-01-23
CPC分类号： H04Q11/0478 , H04L2012/5614 , H04L2012/563 , H04L2012/5672
摘要： A plurality of end devices are coupled via a shared port to an asynchronous network in which traffic is carried in cells. A cell multiplexer is disposed between the devices and the port and is adapted to multiplex cells from the devices to the port in the order in which they are received by the multiplexer. The multiplexer broadcasts cells received from the network to all of the devices. Each said device is allocated a respective VCI so that it can identify its own cells from the broadcast cells.
摘要翻译： 多个终端设备经由共享端口耦合到异步网络，其中业务在小区中承载。 单元多路复用器设置在设备和端口之间，并且适于以多路复用器接收它们的顺序将单元从设备复用到端口。 多路复用器将从网络接收的单元广播到所有设备。 每个所述设备被分配相应的VCI，使得其可以从广播小区识别其自己的小区。
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8.发明授权公开(公告)号：US06493316B1
公开(公告)日：2002-12-10
申请号：US09201799
申请日：1998-12-01
IPC分类号： G06F1100
CPC分类号： H04L47/27 , H04L29/06 , H04L47/10 , H04L47/193 , H04L47/28 , H04L69/16 , H04L69/163 , H04L69/326
摘要： Flow control of packet based traffic by window is known. Novel modification is described which causes the flow control mechanism to reduce sending rate to some configured number rather than just reducing it by a fixed amount such as one half. The description also shows how the flow control mechanism can be constrained to a maximum rate. The configured numbers will assure that the connection can always run at a minimum rate but not more than a maximum rate. If the guaranteed minimum bandwidth is known and the round trip time between the end points is known or has been calculated, then the sender node needs only reduce its window to that which corresponds to a sending rate equal to that configured number. In this way the protocol will still probe for extra, opportunistic bandwidth but will be able to maintain the minimum rate. In a similar way a window that corresponds to the maximum rate can be calculated and used to constrain the maximum rate of sending.
摘要翻译： 已知基于分组流量的窗口流控制。 描述了新的修改，其导致流量控制机制将发送速率降低到某些配置的数量，而不是仅仅将其减少固定的量例如一半。 该描述还显示了流量控制机制如何被限制到最大速率。 配置的数字将确保连接始终可以以最小速率运行但不超过最大速率。 如果保证的最小带宽是已知的，并且端点之间的往返时间已知或已被计算，则发送方节点仅需将其窗口减少到对应于等于该配置数量的发送速率的窗口。 以这种方式，协议仍将探索额外的机会带宽，但将能够维持最低速率。 以类似的方式，可以计算对应于最大速率的窗口，并用于约束最大发送速率。
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公开(公告)号：US06483805B1
公开(公告)日：2002-11-19
申请号：US09221778
申请日：1998-12-28
IPC分类号： G01R3108
CPC分类号： H04L41/142 , H04L41/5003 , H04L41/5022 , H04L43/00 , H04L43/026 , H04L43/0852 , H04L43/0882 , H04L47/13 , H04L47/2408 , H04L69/16 , H04L69/161 , H04L69/163
摘要： A method of monitoring telecommunications network traffic comprising the steps of: receiving a packet stream comprising packets each identified as belonging to one of at least three classes; calculating a difference between the numbers of packets received identified as belonging to a first and a second of said classes; and deriving a measure of traffic load on the network responsive to said difference. The invention also relates to a method for admission control based on the above method of monitoring and a method for overcoming admission control avoidance. It also relates to apparatus embodying these methods.
摘要翻译： 一种监控电信网络业务的方法，包括以下步骤：接收包括被分类为属于至少三个类别之一的分组的分组流; 计算被识别为属于所述类别中的第一和第二类的接收的数量的数量之间的差; 以及响应于所述差异导出网络上的业务负载的量度。 本发明还涉及一种基于上述监控方法的接纳控制方法和一种克服接纳控制避免的方法。 它还涉及体现这些方法的装置。
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公开(公告)号：US06330226B1
公开(公告)日：2001-12-11
申请号：US09014110
申请日：1998-01-27
IPC分类号： B65H908
CPC分类号： H04L69/163 , H04L29/06 , H04L29/06027 , H04L47/10 , H04L47/12 , H04L47/15 , H04L47/193 , H04L47/50 , H04L47/54 , H04L47/70 , H04L47/741 , H04L47/745 , H04L47/801 , H04L47/826 , H04L69/16 , H04L69/161 , H04L69/326
摘要： Congestion at a network node can be aggravated by having too many TCP connections. A simple method of avoiding the bad effects of too many TCP connections is to limit the number of connections. Limiting the number of connections is achieved by an admission control which delays or even discards the connection set-up packets. TCP traffic flows are monitored to generate packet loss characteristics and when a certain condition is met, a connection request queue is disabled.
摘要翻译： 拥塞太多TCP连接可能会加剧网络节点的拥塞。 避免太多TCP连接的不良影响的简单方法是限制连接数量。 通过接纳控制来实现连接数量的限制，该接纳控制延迟甚至丢弃连接建立分组。 监视TCP流量流以产生分组丢失特性，并且当满足某个条件时，禁用连接请求队列。
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