公开(公告)号：US5606559A

公开(公告)日：1997-02-25

申请号：US515183

申请日：1995-08-11

申请人： Ryan L. Badger ,  Kenneth J. Barker ,  Paul H. Nichols ,  Russell E. Schroter ,  John K. Stacy ,  Mark C. Wartski

发明人： Ryan L. Badger ,  Kenneth J. Barker ,  Paul H. Nichols ,  Russell E. Schroter ,  John K. Stacy ,  Mark C. Wartski

IPC分类号： H04Q3/00 ,  H04L12/56 ,  H04Q11/04 ,  H04L12/54

CPC分类号： H04Q11/0478 ,  H04L2012/5615 ,  H04L2012/5616 ,  H04L2012/5652 ,  H04L2012/5681

摘要： An ATM communications network includes a system processor having a device driver and a memory coupled to an adapter at an interface. Frames stored in the memory are transmitted to the network using a transmit ready queue residing in the adapter and defined by transmit control registers. The frames are linked together by descriptors and pointers to received ready lists maintained by the device driver. A transmit frame complete list is established in the system memory using the transmit control registers. An interrupt is generated by the adapter indicating when frame transmission is complete. Simultaneously, cells are received from the network and stored in system memory according to a free buffer list established by the device driver. A pointer is maintained by the device driver to the last entry of the receive free buffer list. The adapter maintains a pointer to the next buffer to be used from the receive free buffer list. A receive ready list is established by the device driver in system memory with the location indicated to the adapter via the receive control registers in the adapter. The receive data cells are reassembled into frames in buffers from the free buffer list. At completion of a received frame, the frame is added to an appropriate receive ready list. An interrupt is generated to the processor by the adapter when one or more completed frames reside on the receive ready list for transmission to the network.

摘要翻译： ATM通信网络包括具有设备驱动器和耦合到接口处的适配器的存储器的系统处理器。 存储在存储器中的帧使用驻留在适配器中并由发送控制寄存器定义的发送就绪队列发送到网络。 这些帧通过描述符和指针链接在一起，以接收由设备驱动程序维护的准备好的列表。 使用发送控制寄存器在系统存储器中建立发送帧完整列表。 适配器产生中断，指示何时帧传输完成。 同时，根据由设备驱动程序建立的空闲缓冲器列表，从网络接收单元并将其存储在系统存储器中。 指针由设备驱动程序维护到接收空闲缓冲区列表的最后一个条目。 适配器维护指向要从接收空闲缓冲区列表中使用的下一个缓冲区的指针。 系统存储器中的设备驱动程序建立接收就绪列表，并通过适配器中的接收控制寄存器向适配器指示位置。 接收数据单元从缓冲区列表中重新组装成缓冲区中的帧。 在完成接收到的帧时，帧被添加到适当的接收就绪列表。 当一个或多个完成的帧驻留在接收就绪列表上以传输到网络时，由适配器向处理器产生中断。

公开(公告)号：US06246699B1

公开(公告)日：2001-06-12

申请号：US09324464

申请日：1999-06-02

申请人： Mark C. Wartski ,  Thomas E. O'Shea

发明人： Mark C. Wartski ,  Thomas E. O'Shea

IPC分类号： H04J316

CPC分类号： H04Q11/04 ,  H04Q2213/13003 ,  H04Q2213/13107 ,  H04Q2213/13141 ,  H04Q2213/13292

摘要： A centralized cross-connect (DS0)-time slot routing scheme for multiple bandwidth communication circuit cards is executed by a supervisory control card installed in a distributed backplane of a time division multiplex (TDM)-based communication system equipment shelf. The distributed backplane supports a plurality of TDM time slots, and has a plurality of card slots in which communication circuits cards are installed. A relational database provides a transport association among the TDM time slots of the backplane and DS0 communication channels of communication circuits cards that allows any DS0 communication channel of any port of any communication circuit card to be associated with any TDM communication transport time slot of the backplane. The supervisory control card controls the transport of DS0 communication channels in selected TDM communication transport time slots in accordance with the contents of the relational database.

摘要翻译： 用于多个带宽通信电路卡的集中交叉连接（DS0）时隙路由方案由安装在基于时分复用（TDM）的通信系统设备机架的分布式背板中的监控卡执行。 分布式背板支持多个TDM时隙，并且具有多个卡槽，其中安装有通信电路卡。 关系数据库在背板的TDM时隙和通信电路卡的DS0通信信道之间提供传输关联，其允许任何通信电路卡的任何端口的任何DS0通信信道与背板的任何TDM通信传输时隙相关联 。 监控控制卡根据关系数据库的内容控制DSO通信信道在选定的TDM通信传输时隙中的传输。