公开(公告)号：US6104714A

公开(公告)日：2000-08-15

申请号：US932547

申请日：1997-09-17

申请人： Francis Baudelot ,  Alain Benayoun ,  Jean-Fracois LePennec ,  Patrick Michel

发明人： Francis Baudelot ,  Alain Benayoun ,  Jean-Fracois LePennec ,  Patrick Michel

IPC分类号： H04L12/70 ,  H04Q11/04 ,  H04L12/28 ,  H04L12/56

CPC分类号： H04Q11/0478 ,  H04L2012/5612

摘要： A method and apparatus for an isochronous traffic of Asynchronous Transfer Mode (ATM) cells in a ring network having at least two stations (101,102) and a ring server (001). The communication within the ring is based on specific isochronous control and data cells. The control cell contains a cell header, sequence number, type of command and parameter fields. The data cell contains a header and a payload divided into N m-bit slots. The isochronous data cells are shared by a plurality of stations on the ring by allocating corresponding slotlist whose identification is carried in the parameter field. Furthermore, the server provides for each station's communication link a transmit identifier in the header associated to a reference in a list of allocated slots for transmission and a receive identifier associated to a reference in a list of allocated slots for reception. The implementation of two pairs of registers whose bits correspond to each byte of the isochronous data cell enables processing in real time transmission and reception of the isochronous data cells and to concatenate the bytes to be stored in a memory and to transmit transparently unmodified or substituted bytes on the ring.

摘要翻译： 一种用于具有至少两个站（101,102）和环形服务器（001）的环形网络中的异步传输模式（ATM）小区的等时业务的方法和装置。 环内的通信基于特定的等时控制和数据信元。 控制单元包含单元头，序列号，命令类型和参数字段。 数据信元包含标题和分为N个m位时隙的净荷。 同步数据信元由环路上的多个站共享，分配对应的在列表中携带标识的槽位列表。 此外，服务器为每个站的通信链路提供与在分配的用于传输的时隙的列表中的参考相关联的头部中的发送标识符以及与用于接收的所分配的时隙的列表中的参考相关联的接收标识符。 位对应于同步数据单元的每个字节的两对寄存器的实现使得能够实时处理同步数据单元的发送和接收，并且将要存储在存储器中的字节连接并且透明地未修改或替换的字节 在戒指上