公开(公告)号：EP0753237B1

公开(公告)日：1998-10-07

申请号：EP95913229.1

申请日：1995-03-28

申请人： GPT LIMITED

发明人： ARNOLD, John, Spencer

IPC分类号： H04Q11/04

CPC分类号： H04Q11/0478 ,  H04J3/247 ,  H04L2012/561 ,  H04L2012/5613 ,  H04L2012/5615 ,  H04L2012/5616 ,  H04L2012/5619 ,  H04L2012/563 ,  H04L2012/5636 ,  H04L2012/5652 ,  H04L2012/5672

摘要： To increase the number of subscriber network ports which may be accessed on a Broadband Integrated Services Digital (B-ISDN) access network using Asynchronous Transfer Mode (ATM) technology where a Concentration Function is provided by statistical multiplexers, a Grooming Function by ATM switches and own-access-network connections is provided by combining "upstream" ports into the core network(s) and the "downstream" ports to subscribers into a common address group and each subscriber port and each core network(s) access port is allocated a unique OSI Layer 2 address the access network destination address being carried in the Virtual Path Identifier (VPI) field of each ATM cell formatted according to relevant CCITT recommendations for the User Network Interface (UNI) or the Network to Network Interface (NNI) and the Virtual Channel Identifier (VCI) field of the CCITT recommendations is divided into two sub-fields which carry the OSI Layer 2 source address and a Terminal Equipment Identifier (TEI) field respectively, the TEI field being used to identify a virtual channel at the source and destination ends of a path.

公开(公告)号：EP0797151A2

公开(公告)日：1997-09-24

申请号：EP97301829.4

申请日：1997-03-18

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Asano, Shigehiro, c/o Intellectual Property Div. ,  Masaki, Suzuki, c/o I.P. Div., Toshiba Corp.

IPC分类号： G06F13/362

CPC分类号： H04Q11/0478 ,  G06F13/362 ,  H04L12/5602 ,  H04L2012/5613 ,  H04L2012/5615 ,  H04L2012/5616 ,  H04L2012/5652 ,  H04L2012/5679

摘要： A continuous data server includes a storage unit connected to a buffer memory which is in turn connected to a plurality of communication control units which transfer data of the buffer memory to a network. The right to use a bus interconnecting the buffer memory and communication control units is deterministically assigned by a micro-scheduler in accordance with a program stored in a micro-schedule table. The micro-scheduler allocates the right to use the bus in accordance with a predetermined schedule, rather than by arbitration.

摘要翻译： 连续数据服务器包括连接到缓冲存储器的存储单元，缓冲存储器又连接到将缓冲存储器的数据传送到网络的多个通信控制单元。 使用连接缓冲存储器和通信控制单元的总线的权利由微调度器根据存储在微调度表中的程序确定性地分配。 微调度员根据预定的时间表而不是通过仲裁来分配使用总线的权利。

公开(公告)号：EP0760186A1

公开(公告)日：1997-03-05

申请号：EP95919137.0

申请日：1995-05-10

申请人： INTEGRATED NETWORK CORPORATION

发明人： GUPTA, Dev, Vrat ,  CHEN, Yu-Ren, Brian ,  SHARPER, Craig, A. ,  STONE, Alan, E.

IPC分类号： H04Q3 ,  H04L12 ,  H04L29 ,  H04N7 ,  H04Q11

CPC分类号： H04L65/1026 ,  H04L12/2801 ,  H04L12/2852 ,  H04L12/64 ,  H04L12/6402 ,  H04L29/06 ,  H04L29/06027 ,  H04L49/107 ,  H04L65/1036 ,  H04L69/08 ,  H04L2012/5612 ,  H04L2012/5613 ,  H04L2012/5614 ,  H04L2012/5615 ,  H04L2012/5627 ,  H04L2012/5638 ,  H04L2012/5651 ,  H04L2012/5652 ,  H04L2012/5679 ,  H04L2012/6427 ,  H04L2012/6443 ,  H04L2012/6448 ,  H04L2012/6459 ,  H04L2012/6464 ,  H04L2012/6483 ,  H04L2012/6486 ,  H04L2012/6489 ,  H04N7/173 ,  H04N7/17309 ,  H04N7/17336 ,  H04N7/17345 ,  H04N21/6118 ,  H04N21/64707 ,  H04Q11/0478

摘要： A Scalable Multimedia Network providing integrated networking of data, voice, video and image services over a variety of access facilities including metallic loops, fiber/coax or digital fiber is disclosed herein. The SMN establishes customer initiated switched virtual circuits for all traffic types and directs them to the appropriate backbone network. The SMN is based on a distributed switching platform that enables carriers to economically provide service to a small number of customers and add capacity incrementally as the customer base increases. The platform has a protocol adaptation capability which permits communications between customer premises equipment and potentially incompatible backbone networks or network servers.

公开(公告)号：EP0724796A1

公开(公告)日：1996-08-07

申请号：EP94929268.0

申请日：1994-09-20

申请人： TRANSWITCH CORPORATION

发明人： UPP, Daniel, C.

IPC分类号： G06F13 ,  H04L12 ,  H04Q11

CPC分类号： H04L12/5601 ,  H04L12/403 ,  H04L12/4035 ,  H04L2012/5613 ,  H04L2012/5615 ,  H04L2012/5679 ,  H04Q11/0478

摘要： An asynchronous data transfer and source traffic control system includes a bus master (100) and a plurality of bus users (112, 114, 116) coupled to a bidirectional data bus (120-128). The bus master (100) provides two clock signals (120, 122) to each bus user (112, 114, 116), a system clock (120) and a frame clock (122). The frame clock designates the start of a frame. A frame format preferably includes fifteen or sixteen system clock cycles, the first of which is designated the request field and the last of which includes a grant field. One or more other cycles may be assigned control and/or routing information and the remainder of the cycles comprise a data field of fixed length. During the request field, any number of bus users (112, 114, 116) may request access which is received by the bus master (100). During the grant field, the bus master (100) grants access to a selected bus user (112, 114, 116) for the entire data portion of the next frame. Which user (112, 114, 116) is granted access to the next frame is determined according to an arbitration algorithm in the bus master (100) which may be unknown to the bus users (112, 114, 116). The asynchronous data transfer and source traffic control system has particular application in accommodating the transfer of the contents of ATM cells used in BISDN systems.

公开(公告)号：EP0669780A3

公开(公告)日：1996-08-07

申请号：EP95300577.4

申请日：1995-01-30

申请人： Zheng, Liu

发明人： Zheng, Liu

IPC分类号： H04Q11/04 ,  H04L12/417 ,  H04L12/28

CPC分类号： H04L12/4035 ,  H04L12/2852 ,  H04L12/40156 ,  H04L12/40163 ,  H04L12/403 ,  H04L12/417 ,  H04L2012/5613

摘要： A method provides for priority data transmission utilizing medium access control protocol with a fair cell-access scheme having a two-level priority for access in a local area network having a unidirectional looped bus and a plurality of network stations coupled to the bus for asynchronous cell transmissions from one network station to other network stations. A head-of-bus is used to generate continuously time slots to the bus. Each of the time slots includes a busy bit, a high priority slot reserved bit, a low priority slot reserved bit, a high priority slot reservation bit, and a low priority slot reservation bit. The method further extends the two-level cell access to n-level cell access. Each of the time slots thus includes a busy bit, n priority slot reserved bits, and n priority slot reservation bits. The medium access control protocol makes use of the busy bit, the priority slot reserved bits, and the priority slot reservation bits so as to provide fair bandwidth sharing by all of the network stations connected to the bus.

公开(公告)号：EP0522430A3

公开(公告)日：1993-03-24

申请号：EP92111132.4

申请日：1992-07-01

申请人： FUJITSU LIMITED

发明人： Ishibashi, Ryoichi, c/o Fujitsu Limited ,  Tachibana, Tetsuo, c/o Fujitsu Limited ,  Ohmori, Hisakazu, c/o Fujitsu Limited

IPC分类号： H04Q11/04 ,  H04L12/28 ,  H04L12/26

CPC分类号： H04Q11/0478 ,  H04L2012/5613 ,  H04L2012/5615 ,  H04L2012/5627

摘要： In each of a plurality of subscriber systems included in a B-ISDN for controlling access competition among a plurality of terminals under the DQDB protocol, the terminals (13) are electrically connected to a dual bus comprising a downbus (2a) and an upbus (2b) both extending from a network terminal (1). Each of the terminals has data transmission processing means (8), downbus processing means (10a), upbus processing means (10b), a timer (11) and failure detecting means (12). When data transmission request is issued from the data transmission processing means (8), the failure detecting means (12) is activated in response to this request to start the timer (12) so as to count a given time interval which has elapsed. If either a request message or data cannot be sent even when the timer takes time out, then the failure detecting means (8) determines that a failure has occurred in the dual bus.

公开(公告)号：EP0462294A1

公开(公告)日：1991-12-27

申请号：EP90110996.7

申请日：1990-06-11

申请人： ALCATEL BUSINESS SYSTEMS

发明人： Le Cucq, Gérald ,  Moulehiawy, Abdelkrim

IPC分类号： H04L12/64

CPC分类号： H04Q11/0428 ,  H04L12/64 ,  H04L2012/5613 ,  H04Q11/0478

摘要： Cette interface pour accès en émission et en réception au support de transmission synchrone (1) d'un réseau de commutation réparti, ledit réseau étant architecturé autour d'un support de transmission partagé dans le temps entre différentes stations et chaque station comportant des moyens pour déterminer les positions temporelles correspondant aux données à écrire ou à lire sur ledit support, comporte dans chaque station, pour chaque sens de transmission, un couple de mémoires (A, B, A', B') dont l'une accède audit support respectivement en émission et en réception, en synchronisme avec la présentation des positions temporelles sur ledit support, tandis que l'autre est respectivement écrite ou lue, sous la commande desdits moyens de détermination de positions temporelles, et vice versa.

摘要翻译： 此接口用于发送和接收到分布式通信网络的同步传输介质（1）模式的访问，所述网络被围绕一个传输介质的所有这是时间共享的不同站和每个站确定性采矿的包括用于所述时间相对应的位置之间architectured 到数据要被写入或从所述介质读出，包括在每个站中，对其中的一个访问所述介质在发送和传输的每个方向，一对存储器（A，B，A“ B”） 分别接收模式下，分别与在介质。所述时间位置的呈现同步，而另一个写入或读取的，确定性的采矿时间位置的所述装置的控制下，并且反之亦然。 ... ...