公开(公告)号：US07242686B1

公开(公告)日：2007-07-10

申请号：US10403566

申请日：2003-03-31

申请人： David Thomas Dougherty ,  Michael Alec Sluyski ,  Kenneth Yi Yun ,  George Beshara Bendak ,  John David Huber ,  Kirk Alvin Miller ,  Peter John Holzer

发明人： David Thomas Dougherty ,  Michael Alec Sluyski ,  Kenneth Yi Yun ,  George Beshara Bendak ,  John David Huber ,  Kirk Alvin Miller ,  Peter John Holzer

IPC分类号： H04L12/56

CPC分类号： H04L12/5601 ,  H04L49/106 ,  H04L2012/5665 ,  H04L2012/5675

摘要： A system and method are provided for communicating TDM communications through a packet switch fabric. The method comprises: accepting native TDM frames; converting the native TDM frames to fabric-cellified TDM frames; differentiating the cells of each frame into time slots; interleaving the frame time slots; TDM scheduling the interleaved frame time slots; and, routing the interleaved frame time slots between input port cards and output port cards on backplane data links through an intervening crossbar. TDM scheduling the interleaved frame time slots includes: an input port card ingress memory subsystem (iMS) receiving a first TDM configuration schedule including interleaved frame time slots cross-referenced to backplane transmission times; and, an output port card egress MS (eMS) receiving a second TDM configuration schedule including interleaved frame time slots cross-referenced to egress channel transmission times. Then, the routing is performed in response to the TDM schedules.

摘要翻译： 提供了一种用于通过分组交换结构传送TDM通信的系统和方法。 该方法包括：接收本机TDM帧; 将本机TDM帧转换成结构化的TDM帧; 将每个帧的单元区分成时隙; 交织帧时隙; TDM调度交错帧时隙; 并且通过插入的交叉开关将输入端口卡和输出端口卡之间的交错帧时隙路由在背板数据链路上。 TDM调度交错帧时隙包括：接收第一TDM配置调度的输入端口卡入口存储器子系统（iMS），其包括交叉参考背板传输时间的交织帧时隙; 以及输出端口卡出口MS（eMS），其接收第二TDM配置调度，所述第二TDM配置调度包括交叉参考出口信道传输时间的交织帧时隙。 然后，响应于TDM时间表执行路由。

公开(公告)号：US07263066B1

公开(公告)日：2007-08-28

申请号：US10395369

申请日：2003-03-24

申请人： Kenneth Yi Yun ,  Jianfeng Shi ,  Viet Linh Do ,  Michael John Hellmer ,  Kevin Warren James ,  Kirk Alvin Miller ,  Sushil Kumar Singh ,  David Thomas Dougherty ,  John Calvin Leung

发明人： Kenneth Yi Yun ,  Jianfeng Shi ,  Viet Linh Do ,  Michael John Hellmer ,  Kevin Warren James ,  Kirk Alvin Miller ,  Sushil Kumar Singh ,  David Thomas Dougherty ,  John Calvin Leung

IPC分类号： H04L12/26

CPC分类号： H04L12/5601 ,  H04L49/106 ,  H04L2012/5665 ,  H04L2012/5675

摘要： A credit-based system and method are provided for managing backplane traffic flow in a packet communications switch fabric. The method comprises: accepting information packets including cells and cell headers with destination information; modifying the destination information in the received cell headers; routing information packets between an input port card and output port cards on backplane data links through an intervening crossbar; at the input port card, maintaining a credit counter for each output port card channel; decrementing the counter in response to transmitting cells from the input port card; generating credits in response to transmitting cells from an output port card channel; and, using modified destination information, sending the generated credits to increment the counter. In some aspects, modifying the destination information in the received packet headers includes: extracting the output port card termination from the card field; and, inserting the input port card source in the card field.

摘要翻译： 提供了基于信用的系统和方法来管理分组通信交换结构中的背板业务流。 该方法包括：接收目的地信息包括小区和小区标题的信息包; 修改所接收的信元头部中的目的地信息; 在输入端口卡和背板数据链路上的输出端口卡之间通过插入的交叉开关路由信息包; 在输入端口卡处，保持每个输出端口卡通道的信用计数器; 响应于从输入端口卡传输单元而递减计数器; 响应于从输出端口卡信道发送信元而产生信用; 并且使用修改的目的地信息，发送生成的信用以递增计数器。 在一些方面，修改接收到的分组头部中的目的地信息包括：从卡片段提取输出端口卡终端; 并将输入端口卡卡插入卡片区域。

公开(公告)号：US07209453B1

公开(公告)日：2007-04-24

申请号：US10378521

申请日：2003-03-03

申请人： Kenneth Yi Yun ,  Michael John Hellmer ,  David Thomas Dougherty ,  Philip Michael Clovis ,  Eli James Aubrey Fernald ,  Peter John Holzer

发明人： Kenneth Yi Yun ,  Michael John Hellmer ,  David Thomas Dougherty ,  Philip Michael Clovis ,  Eli James Aubrey Fernald ,  Peter John Holzer

IPC分类号： H04J1/16 ,  H04J3/14

CPC分类号： H04L49/557 ,  H04L49/101 ,  H04L49/555

摘要： A system and method are provided for tolerating control link faults in a packet communications switch fabric. The method comprises: accepting information packets including a plurality of cells, at a plurality of port card ports, the plurality of information packets addressing a plurality of port card ports; selectively connecting port card ports to port card backplane data links; in response to backplane control link communications, selectively connecting port card backplane data links and crossbars; sensing a connection fault in a control link; and, in response to sensing the control link fault, reselecting connections between the port card ports and the port card backplane data links. In some aspects, selectively connecting port card backplane data links and crossbars includes: for a particular backplane data link, fixedly connecting each port card to a corresponding interface of an assigned crossbar; and, selectively enabling the connection to each crossbar.

摘要翻译： 提供了一种用于容忍分组通信交换结构中的控制链路故障的系统和方法。 该方法包括：在多个端口卡端口处接收包括寻址多个端口卡端口的多个信息分组的包括多个小区的信息分组; 选择性地将端口卡端口连接到端口卡背板数据链路; 响应于背板控制链路通信，选择性地连接端口卡背板数据链路和交叉连接; 感测控制链路中的连接故障; 并且响应于感测到控制链路故障，重新选择端口卡端口和端口卡背板数据链路之间的连接。 在一些方面，选择性地连接端口卡背板数据链路和交叉开关包括：对于特定的背板数据链路，将每个端口卡固定地连接到所分配的交叉开关的相应接口; 并且选择性地启用与每个横杆的连接。

公开(公告)号：US07002996B1

公开(公告)日：2006-02-21

申请号：US09829214

申请日：2001-04-09

申请人： David Thomas Dougherty ,  Philip Michael Clovis

发明人： David Thomas Dougherty ,  Philip Michael Clovis

IPC分类号： H04J3/06

CPC分类号： H04L49/10 ,  H04J3/0685

摘要： A system and method have been provided for synchronizing the timing of line cards and switch cards in a broadband switch. Synchronization is accomplished using an auxiliary data link between the line and switch cards. One of the switch cards is selected as the master switch card. The master switch card receives timing information from the line cards, and in turn, sends timing correction signals to each of the line cards. Each line card acquires synchronization using its respective timing correction. A master line card is selected from among the line cards, and the slave switch cards adopt the timing of the master line card, becoming synchronized to the master switch card.

摘要翻译： 已经提供了一种用于使宽带交换机中的线路卡和交换机卡的定时同步的系统和方法。 使用线路和交换机卡之间的辅助数据链路实现同步。 选择其中一个开关卡作为主开关卡。 主开关卡从线路卡接收定时信息，然后将定时校正信号发送到每个线路卡。 每个线卡使用其相应的定时校正来获取同步。 从线路卡中选择主线卡，从交换卡采用主线卡的定时，与主交换卡同步。