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1.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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2.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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公开(公告)号：US06643292B2
公开(公告)日：2003-11-04
申请号：US09066888
申请日：1998-04-28
IPC分类号： H04L1256
CPC分类号： H04L29/12018 , H04L12/4633 , H04L29/06 , H04L29/12009 , H04L47/10 , H04L47/12 , H04L47/193 , H04L47/2441 , H04L47/27 , H04L61/10 , H04L69/16 , H04L69/161 , H04L69/163 , H04L69/32
摘要： Transport networks are facing new challenges and opportunities because of the explosive growth of data traffic. Besides having to meet the ever increasing bandwidth demand, transport networks need to provide new functionalities for the support of data applications. Novel enhanced transport systems with inherent packet multiplexing to meet these challenges are described. It uses Internet protocols and technologies to implement these packet transport systems, and thereby re-use much of the existing Internet infrastructure already widely deployed.
摘要翻译： 由于数据流量的爆炸式增长，运输网络面临新的挑战和机遇。 除了必须满足日益增长的带宽需求外，传输网络还需要提供新的功能来支持数据应用。 描述了具有固有分组复用以满足这些挑战的新型增强型传输系统。 它使用互联网协议和技术实现这些分组传输系统，从而重新使用已经广泛部署的大量现有的互联网基础设施。
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公开(公告)号：US06628609B2
公开(公告)日：2003-09-30
申请号：US09069845
申请日：1998-04-30
IPC分类号： H04J314
CPC分类号： H04L47/12 , H04L41/0896 , H04L47/10 , H04L47/50
摘要： The present invention relates to a switch for processing data units, such as IP data packets. The switch can be implemented as a router that includes a plurality of input ports, a plurality of output ports and a switch fabric capable of establishing logical pathways to interconnect a certain input port with a certain output port. A characterizing element of the router is its ability to control bandwidth usage on a basis of a logical pathway. This prevents congestion to occur in the switch fabric and also at the level of the output ports. For every active logical pathway the router sets-up a bandwidth control mechanism including at least one queue to hold data units received at an input port. The bandwidth control mechanism performs an accounting operation to determine the average bandwidth usage and if less than a threshold requests for releasing data units in the switch fabric are sent to the switch fabric controller. When the threshold is exceeded the bandwidth control mechanism stops sending requests for service to the switch fabric controller. The system also supports priorities. Instead of stopping the issuance of signals requesting release of data packets the priority level of the queue (reflected in a priority field in the signal requesting release of a data packet) changes from HI to LO. The switch fabric controller is designed to recognize priority requests and will accept LO priority requests only when there are no other HI priority requests pending. The present invention also provides a data transport device which includes a plurality of nodes interconnected by a physical link that establishes two ring-shaped paths on which data is transported on opposite directions. Each node is capable of sending a control message to the upstream node to advise the upstream node of the data carrying requirements of the node at which the message has originated. The upstream node can then throttle the introduction of data in the paths to preserve capacity that can be used by the downstream nodes.
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7.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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8.发明授权公开(公告)号：US06246684B1
公开(公告)日：2001-06-12
申请号：US08998347
申请日：1997-12-24
IPC分类号： H04L1256
摘要： The invention provides a method and apparatus for re-ordering data traffic units, such as IP data packets, that may have been miss-ordered during a transmission over a multi-pathway link between a source node and a destination node in a network. The re-ordering apparatus includes a storage medium for intercepting the IP data packets and holding the IP data packets to allow IP data packets delayed on slower pathways to catch-up. The IP data packets in the storage medium are re-ordered based on their sequence number in an attempt to restore the original order of the IP data packets. A maximal time delay variable determines how long a certain IP data packet can be held in the storage medium. The TP data packet is released prior to the maximal time delay variable or as the maximal time delay variable is exceeded.
摘要翻译： 本发明提供了一种用于重新排序在网络中的源节点和目的地节点之间的多路径链路的传输期间可能被错过排序的数据业务单元（例如IP数据分组）的方法和装置。 重新排序装置包括用于拦截IP数据分组并保持IP数据分组的存储介质，以允许在较慢路径上延迟的IP数据分组追赶。 为了恢复IP数据包的原始顺序，存储介质中的IP数据包根据其序列号进行重新排序。 最大时间延迟变量确定某个IP数据包可以在存储介质中保持多长时间。 TP数据包在最大时间延迟变量之前被释放，或者超过最大时间延迟变量。
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公开(公告)号：US6028842A
公开(公告)日：2000-02-22
申请号：US772256
申请日：1996-12-23
CPC分类号： H04L47/10 , H04L47/2441 , H04Q11/0478 , 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.
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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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