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1. 发明授权

EP0457620B1 Chordal ring network 失效转让
标题翻译：环网络的节点之间的附加的弦状的连接
公开(公告)号：EP0457620B1
公开(公告)日：1995-12-20
申请号：EP91304489.7
申请日：1991-05-17
申请人： AT&T Corp.
发明人： Karol, Mark J.
IPC分类号： H04L12/43
CPC分类号： H04L12/42

2. 发明公开

EP0549122A2 A concentrator-based growable packet switch 失效
标题翻译： Erweiterbare Paketvermittlungseinrichtung mit einem Konzentrator
公开(公告)号：EP0549122A2
公开(公告)日：1993-06-30
申请号：EP92310490.5
申请日：1992-11-18
申请人： AT&T Corp.
发明人： Eng, Kai Y. , Karol, Mark J. , Pashan, Mark Allen
IPC分类号： H04L12/56 , H04Q11/04
CPC分类号： H04L12/5601 , H04L49/1553 , H04L49/1576 , H04L2012/561 , H04L2012/5681 , H04Q11/0478
摘要： An mxn (m > n) output Packet Switch Unit is implemented by using an nxn Packet Switch Module and an m:n Concentrator. The arriving packet cells are supplied from the m Concentrator inputs to the n Concentrator outputs in a "first-in first-out" (FIFO) sequence. The Concentrator provides for buffering of arriving packet cells on the m Concentrator inputs in excess of available packet cell positions in the n Concentrator outputs until they can be supplied to a concentrator output in the FIFO sequence. In turn, packet cells from the n Concentrator outputs are supplied to n inputs of the Packet Switch Module which supplies them to appropriate output destinations associated with the n outputs of the Packet Switch Module. A plurality of the Concentrator-Based output Packet Switch Units is readily employed to implement any "larger" Packet Switch architecture.
摘要翻译： mxn（m> n）输出分组交换单元通过使用nxn分组交换模块和m：n集中器来实现。到达的分组信元以“先进先出”（FIFO）序列从m个集中器输入提供给n个集中器输出。集中器提供缓冲m集中器输入端上的到达分组信元，超过n个集中器输出中的可用分组信元位置，直到它们可以提供给FIFO序列中的集中器输出。反过来，来自n个集中器输出的分组信元被提供给分组交换模块的n个输入端，分组交换模块将它们提供给与分组交换机模块的n个输出相关联的适当的输出目的地。多个基于集中器的输出分组交换单元容易地用于实现任何“较大的”分组交换机架构。

3. 发明公开

EP0450974A3 Transmission congestion control method and apparatus 失效转让
标题翻译：传动控制方法和装置
公开(公告)号：EP0450974A3
公开(公告)日：1992-09-23
申请号：EP91303017.7
申请日：1991-04-05
申请人： AT&T Corp.
发明人： Eng, Kai Y. , Gitlin, Richard D. , Karol, Mark J.
IPC分类号： H04J3/16 , H04L12/56
CPC分类号： H04J3/247 , H04J3/1682
摘要： A congestion control method and apparatus for use with a communications link (111) comprising a plurality of N channels (106-110). A plurality of at most N-1 queues (101-104) are sequentially polled, and data is output therefrom to the communications link, thereby leaving at least one remaining channel (110). After the at most N-1 queues are polled, a determination is made as to at least one of the at most N-1 queues which is closest to a data overflow condition. The remaining at least one channel is then utilized to transmit data from the at least one queue which is closest to a data overflow condition.

4. 发明授权

EP0680168B1 System and method for optimizing spectral efficiency using time-frequency-code slicing 无效
标题翻译：的系统和方法使用的时间 - 频率码分优化频谱效率
公开(公告)号：EP0680168B1
公开(公告)日：2006-05-31
申请号：EP95302876.8
申请日：1995-04-27
申请人： AT&T Corp.
发明人： Gitlin, Richard D. , Karol, Mark J. , Haas, Zygmunt , Woodworth, Clark
IPC分类号： H04J13/00 , H04J4/00 , H04J13/02 , H04L5/02 , H04B7/26
CPC分类号： H04W28/16 , H04B7/2618 , H04J4/00 , H04J13/16 , H04L5/0005 , H04L5/0016 , H04W72/0466

5. 发明公开

EP0569172A3 Improved controller for input-queued packet switch 失效转让
标题翻译：改进的用于分组交换机控制器具有缓冲输入。
公开(公告)号：EP0569172A3
公开(公告)日：1995-01-25
申请号：EP93303225.2
申请日：1993-04-26
申请人： AT&T Corp.
发明人： Eng, Kai Y. , Karol, Mark J.
IPC分类号： H04L12/56 , H04Q11/04
CPC分类号： H04L49/508 , B06B2201/55 , H04L49/254 , H04L49/3018 , H04L49/3081 , H04L2012/5679 , H04Q11/0478
摘要： Significant throughput improvement is achieved for an input queued packet switch using output port schedulers by permitting the output schedulers to recycle or reassign cell transmission times from input ports which are unable to use them. When an output scheduler assigns a cell transmission time to an input port and that input port is unable to use the assigned transmission time due to a scheduling conflict, for example, the input port makes a new request for the same output port during the next subsequent request period and then returns the unusable transmission time assignment back to the output scheduler. The output scheduler stores the returned transmission time in a separate queue for assignment to later requests for the particular output port. Throughput performance is improved from 58% (without time slot recycling) to 92% (with time slot recycling) for random packet cell traffic models.

6. 发明公开

EP0533391A2 Packet switching apparatus using pipeline controller 失效
标题翻译： Paketvermittlungseinrichtung mit einem Pipeline-Steuergerät。
公开(公告)号：EP0533391A2
公开(公告)日：1993-03-24
申请号：EP92308209.3
申请日：1992-09-10
申请人： AT&T Corp.
发明人： Eng, Kai Y. , Karol, Mark J.
IPC分类号： H04L12/56 , H04Q11/00 , H04Q11/04
CPC分类号： H04L12/5601 , H04L49/106 , H04L49/1507 , H04L49/1553 , H04L49/254 , H04L49/255 , H04Q11/0001 , H04Q11/0066 , H04Q11/0478
摘要： A high-speed, high-capacity, asynchronous transfer mode packet switching system (10,12) comprises electronic and optical components. The switching system may be a high-capacity multiple-gigabit-per-second optical system controlled by a relatively low-speed electronic controller operating at one hundred megabit-per-second rates. The switching system comprises a plurality of N input lines (1 to N). Each of the N lines carries a succession of data packets or cells to the switching system. Each of the cells is input to the switch in time slots or cell periods of predetermined duration. A laser transmitter (in 10) producing a separate and distinct carrier frequency identifying its associated input is responsive to each of the N input lines. The laser transmitters are connected to the input of an optical star coupler (in 10) which is connected to a series of tunable receivers (in 10). There is one tunable receiver for each output of the switching system. Groups of tunable receivers are connected to the inputs of a series of relatively small packet switching modules (12). The receivers are tuned by a relatively low-speed electronic controller. The controller is responsive to header information in the incoming cells and produces a series of control packets having, for example, activity, priority, and source information. The control packets are pipelined through the controller and sent to the appropriate tunable receivers where they indicate which frequency coming out of the star coupler they should be tuned, thereby causing each receiver to be receptive to the output of an appropriate one of the laser transmitters.
摘要翻译：高速，高容量的异步传输模式分组交换系统（10,12）包括电子和光学组件。交换系统可以是由以百兆比特速率操作的相对低速的电子控制器控制的大容量的每千兆千兆位光学系统。切换系统包括多条N条输入线（1〜N）。 N行中的每一行将一系列数据分组或单元传送到交换系统。每个小区在预定时间的时隙或小区周期中被输入到交换机。产生识别其相关输入的单独和不同载波频率的激光发射器（10）响应于N个输入线中的每一个。激光发射器连接到连接到一系列可调谐接收器（10）中的光学星形耦合器（10）的输入端。交换系统的每个输出都有一个可调接收器。可调谐接收器组连接到一系列相对较小的分组交换模块（12）的输入端。接收机由相对低速的电子控制器进行调谐。控制器响应于进入的小区中的报头信息，并产生一系列具有例如活动，优先级和源信息的控制分组。控制分组通过控制器流水线并发送到适当的可调谐接收机，其中它们指示哪些频率从星形耦合器出来，它们应该被调谐，从而使每个接收机接收适当的一个激光发射器的输出。

7. 发明公开

EP0457620A3 Chordal ring network 失效转让
标题翻译：和弦环网
公开(公告)号：EP0457620A3
公开(公告)日：1992-04-08
申请号：EP91304489.7
申请日：1991-05-17
申请人： AT&T Corp.
发明人： Karol, Mark J.
IPC分类号： H04L12/43
CPC分类号： H04L12/42
摘要： A plurality of network interface units (NIU) (401-405) are interconnected by a multiple channel communications medium, and each NIU includes a sequence of inputs (E,F,G) and outputs (A,B,C). Each channel is connected to a separate input, and exits the NIU at a separate output. The output that each channel exits is connected to the next input in the sequence of inputs on the next connector in the chordal ring. Further, channels which enter at a predetermined input (G) of the NIU are cut and connected to a user equipment before exiting the NIU (A). Thus, if a predetermined channel is cut and connected to a particular user equipment, it will not be cut again at the next NIU since it will enter the next NIU at a different input in the input sequence. Indeed, the channel will not be cut again and until N NIU's are traversed, where N is the length of the sequence. Thus, by choosing N to be the chordal length, an NIU is constructed which may be connected in an identical fashion to each user equipment in order to automatically establish chords in the network.
摘要翻译：多个网络接口单元（NIU）（401-405）通过多通道通信介质互连，并且每个NIU包括一系列输入（E，F，G）和输出（A，B，C）。每个通道连接到一个单独的输入，并在单独的输出端退出NIU。每个通道退出的输出连接到和弦环中下一个连接器输入序列中的下一个输入。此外，在离开NIU（A）之前，进入NIU的预定输入（G）的信道被切断并连接到用户设备。因此，如果预定频道被切断并连接到特定的用户设备，它将不会在下一个NIU再次被切断，因为它将在输入序列中的不同输入处进入下一个NIU。事实上，通道不会再被切断，直到N个NIU被遍历，其中N是序列的长度。因此，通过选择N作为弦长，构建NIU，其可以以与每个用户设备相同的方式连接以便在网络中自动建立和弦。

8. 发明公开

EP0472296A1 High-performance packet-switched wdm ring networks with tunable lasers 失效
标题翻译：分组交换，波分复用环网络具有高功率的波长可调谐激光器。
公开(公告)号：EP0472296A1
公开(公告)日：1992-02-26
申请号：EP91306812.8
申请日：1991-07-25
申请人： AT&T Corp.
发明人： Eng, Kai Y. , Karol, Mark J.
IPC分类号： H04L12/28 , H04B10/20
CPC分类号： H04L12/42 , H04J14/0227 , H04J14/0241 , H04J14/028 , H04J14/0283 , H04L12/2801
摘要： A communications network comprising a plurality of "subnetworks" multiplexed onto a single communications medium. A separate group of network interface units (NIUs) communicates on each predetermined "subnetwork", and each NIU also includes a tunable transmitter for transmitting data to NIUs of other subnetworks. Data from a user equipment is transmitted via the tunable transmitter if it is destined for an NIU from another subnetwork, and via a fixed transmitter if it is destined for an NIU on the same subnetwork. In one embodiment, fiber optics are utilized in order to provide a high speed network with tunable lasers.
摘要翻译：一种通信网络，包括多路复用到单个通信介质“子网”的复数。的网络接口单元的单独组（NIU）进行通信的每个预定的“子网”的，因此各NIU包括用于传输数据到其它子网的NIU可调谐发射器。来自用户设备的数据经由调谐发射机反mitted如果从其它子网络去往在NIU，并且经由固定发射机如果在NIU去往于同一个子网。在一个，实施例纤维光学被利用，以便提供一个高速网络具有可调谐激光器。

9. 发明公开

EP0415629A2 Interconnect fabric providing connectivity between an input and arbitrary output(s) of a group of outputs 有权转让
标题翻译：连接结构，从一组输出的输入和任意的输出之间的连接。
公开(公告)号：EP0415629A2
公开(公告)日：1991-03-06
申请号：EP90309161.9
申请日：1990-08-21
申请人： AT&T Corp.
发明人： Eng, Kai Y. , Karol, Mark J. , Yeh, Yu Shuan
IPC分类号： H04L12/56
CPC分类号： H04L49/101 , H04L49/106 , H04L49/1515 , H04L49/253 , H04L49/3018 , H04L49/3027 , H04L49/55
摘要： This invention is an inventive N input by L output interconnect fabric (109). In operation, packets comprising an information field and an address are received at the N inputs (101-108) to the interconnect fabric, and the address in each packet is mapped to a group of outputs (e.g. 122-125) rather than to any particular output. Each packet is then routed to any available one of the interconnect fabric outputs associated with the group to which the packet is mapped. If a number of packets destined for the same group simultaneously arrive at the interconnect fabric inputs and the group to which they are all destined does not comprise enough outputs to accept them, then all packets in excess of the number that the destined group can accept are simply discarded. The probability of lost packets due to such discarded packets is acceptably small. In one exemplary embodiment, the invention can be utilized to build arbitrarily large packet switches.
摘要翻译：本发明是用L输出互连结构（109）的本发明的N个输入。在外科手术中，包括数据包的信息字段，并解决在N个输入（101-108），以互连结构被接收，并且在每个数据包中的地址被映射到一组输出（例如122-125），而不是任何特定的输出。然后，每个数据包被路由到与该分组所映射到的组相关联的互连结构输出中的任一个可用的。如果一些发往同一组分组中的互连结构的输入和它们注定不包含足够的输出，接受他们的小组同时到达，然后超过数DASS的所有数据包死注定组可以接受的简单地丢弃。丢失的数据包，由于搜索丢弃的包的概率是可以接受的小。在一个示例性实施例，本发明可以被利用来建立任意大的分组交换机。

10. 发明授权

EP0569172B1 Improved controller for input-queued packet switch 失效转让
标题翻译：改进的用于分组交换机控制器具有缓冲输入
公开(公告)号：EP0569172B1
公开(公告)日：2001-07-04
申请号：EP93303225.2
申请日：1993-04-26
申请人： AT&T Corp.
发明人： Eng, Kai Y. , Karol, Mark J.
IPC分类号： H04L12/56 , H04Q11/04
CPC分类号： H04L49/508 , B06B2201/55 , H04L49/254 , H04L49/3018 , H04L49/3081 , H04L2012/5679 , H04Q11/0478

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