公开(公告)号：EP0786919A1

公开(公告)日：1997-07-30

申请号：EP96480010.6

申请日：1996-01-23

申请人： International Business Machines Corporation

发明人： Duault, Maurice ,  Nicolas, Laurent ,  Pucci, Bernard ,  Galand, Claude

IPC分类号： H04Q11/04

CPC分类号： H04Q11/0478 ,  H04L2012/5652

摘要： A data processing method for efficiently transporting multimedia data packets of fixed and/or variable length over an Assynchronous Transfer Mode (ATM) network made to transport fixed length ATM cells including a fixed length user data payload and a fixed length ATM header.
Said data processing method includes concatenating said fixed and/or variable length user data and appending said concatenated data with a so-called trailer defining the various concatenated user data lengths and identifications, for being further split into ATM cells payloads before being transmitted over said ATM network.

摘要翻译： 有效运行超过在Assynchronous传输模式（ATM）网络上传输的固定和/或可变长度的多媒体数据包的数据处理方法由传输固定长度ATM信元包括一个固定长度的用户数据有效载荷和一个固定长度的ATM标题。 所述数据处理方法包括：把所述固定的和/或可变长度的用户数据和与附加所述的连接数据的所谓的拖车限定为在所述ATM反mitted之前的各种联接的用户数据的长度和标识，用于进一步被分裂成ATM信元的有效载荷 网络。

公开(公告)号：EP0851706A1

公开(公告)日：1998-07-01

申请号：EP96480129.4

申请日：1996-12-24

申请人： International Business Machines Corporation

发明人： Fichou, Aline ,  Kermarec, François ,  Foriel, Pierre-André, Résidence "Marianne" B ,  Nicolas, Laurent

IPC分类号： H04Q11/04 ,  H04L12/56

CPC分类号： H04L47/805 ,  H04L47/70 ,  H04L47/724 ,  H04L2012/5614 ,  H04L2012/5636 ,  H04Q11/0478

摘要： In ATM networks, the Call Admission Control (CAC) procedure is performed on each connection according to a specified Traffic Descriptor. A mandatory parameter of the Traffic Descriptor is the Peak Cell Rate (PCR), associated with a Cell Delay Variation Tolerance (CDVT). Connections which specify a high CDVT value may potentially send into the network bursts of cells at a rate much higher than the declared Peak Cell Rate, which may lead to congestion in cell buffers of intermediate network nodes. Guaranteeing the Quality of Service (QoS) for such connections may require the reservation of a high amount of resources in the network, leading to poor utilization of those resources. On the other hand, standards allow to simply reject connections for which the CDVT value is greater than a given bound. For connections specifying a Sustainable Cell Rate, the associated Burst Tolerance defines a Maximum Burst Size for cells sent at Peak Cell Rate. A bandwidth reservation strategy based on this maximal value may also reserve too much resources to guarantee the QoS associated with those connections. The present method defines a Call Admission Control procedure, associated with an Usage Parameter Control/Network Parameter Control mechanism, for:

accepting not bursty connections and for guaranteeing the Quality of Service requested at connection setup,
accepting very bursty connections and for guaranteeing a minimal Quality of Service rather than simply rejecting them,
protecting the network from potentially too bursty traffic,
determining a bandwidth reservation method based on a Mean Burst Length,
for every connection, minimizing the bandwidth reservation while satisfying the required Quality of Service.

摘要翻译： 在ATM网络中，根据指定的流量描述符在每个连接上执行呼叫接纳控制（CAC）过程。 流量描述符的强制参数是峰值信元速率（PCR），与信元延迟变化容差（CDVT）相关联。 指定高CDVT值的连接可能潜在地以比所声明的峰值单元速率高得多的速率发送到单元的网络脉冲串，这可能导致中间网络节点的单元缓冲器的拥塞。 确保这种连接的服务质量（QoS）可能需要在网络中预留大量的资源，导致这些资源的利用不足。 另一方面，标准允许简单地拒绝CDVT值大于给定边界的连接。 对于指定可持续单元速率的连接，关联的突发公差定义了以峰值单元速率发送的单元的最大突发大小。 基于该最大值的带宽预留策略也可以保留太多资源以保证与这些连接相关联的QoS。 本方法定义了与使用参数控制/网络参数控制机制相关联的呼叫接纳控制过程，用于：不接受突发连接并保证在连接建立时请求的服务质量，接受非常突发的连接并保证最小质量 的服务，而不是简单地拒绝它们，保护网络免受潜在的突发性流量，为每个连接确定基于平均突发长度的带宽预留方法，使带宽预留最小化，同时满足所需的服务质量。

公开(公告)号：EP0849973B1

公开(公告)日：2005-12-28

申请号：EP97480057.5

申请日：1997-08-19

申请人： International Business Machines Corporation

发明人： Blanc, Alain ,  Nicolas, Laurent ,  Gohl, Sylvie

IPC分类号： H04L12/56

CPC分类号： H04L12/5601 ,  H04L49/108 ,  H04L49/203 ,  H04L49/255 ,  H04L49/256 ,  H04L49/309 ,  H04L2012/5627 ,  H04L2012/5672 ,  H04L2012/5681 ,  H04Q11/0478

公开(公告)号：EP0849973A2

公开(公告)日：1998-06-24

申请号：EP97480057.5

申请日：1997-08-19

申请人： International Business Machines Corporation

发明人： Blanc, Alain ,  Nicolas, Laurent ,  Gohl, Sylvie

IPC分类号： H04Q11/04

CPC分类号： H04L12/5601 ,  H04L49/108 ,  H04L49/203 ,  H04L49/255 ,  H04L49/256 ,  H04L49/309 ,  H04L2012/5627 ,  H04L2012/5672 ,  H04L2012/5681 ,  H04Q11/0478

摘要： A switching system comprising a switching structure (1130) for routing cells from a set of M input ports towards a set of M output ports. Each cell comprises a routing header defining to which of said M output ports the cell is to be routed. The system further includes a set of distributed individual Switch Core Access Layer elements (S.C.A.L.) ( 1000), each distributed SCAL element communicating through one communication link (1400, 1600) to the input and output port of the centralized switching structure (1130). Each SCAL element allows the attachment to at least one Protocol Adapter (Protocol Engine 1600- 1900) and comprises a set of corresponding PINT circuits which further includes a receive part receiving the data cells from the attached Protocol Adapter (Protocol Engine 1600). The receive part includes means for introducing at least one extra byte to every cell that will be reserved for carrying a routing header used for controlling the switching structure in a first step, then a second header that will be used for the PINT circuit when the cell will be received by the transmit part of the PINT element, in a second step. The transmit part of each PINT circuit comprises a control module that receives all the cells that are routed and generated at the considered output port. In accordance with the value carried by the extrabytes, the control means controls whether to discard or not the cell being presented at the input of the PINT circuit. While the receive part of the PINT circuit performs the introduction of the extrabytes needed for controlling the routing and multicasting operations, the accurate values that are needed for doing this are generated into the switching system by means of two successive table read operations. These two successive read operation achieves a two-level multicast feature that provides wide multicasting capabilities, even when the SCAL elements are distributed at different physical areas of the switching system.

摘要翻译： 一种开关系统，包括用于从一组的M个输入端口向一组M个输出端口的路由单元的开关结构（1130）。 每个单元包括一个路由报头限定到的所述m个输出端口的电池是将被路由。 该系统还包括一组分布式个人交换机核心访问层元件（S.C.A.L.）（1000），每个分布式SCAL元件通过一个通信链路（1400，1600）到集中式交换结构（1130）的输入和输出端口进行通信。 每个SCAL元件允许附接至至少一个协议适配器（协议引擎1600- 1900）和包括一组PINT电路CORRESPONDING其进一步包括：接收部分，接收从连接的协议适配器（协议引擎1600）中的数据单元。 接收部分包括：用于引入至少一个额外的字节thatwill被用于执行用于在第一步骤中控制开关结构的路由报头保留每一个细胞，然后进行第二次头thatwill用于PINT电路当电池 将由PINT元件的发射部分被接收，在第二步骤中。 每个PINT电路的发射部分包括一个控制模块没有接收到所有的细胞都被路由并生成在所考虑的输出端口。在与由所述额外的字节所携带的值雅舞蹈，所述控制装置控制是否丢弃或不属于细胞呈现 在PINT电路的输入端。 虽然接收的PINT电路的一部分进行介绍需要用于控制所述路由和多播业务的额外字节的，需要精确的值并用于执行此操作是通过手段的两个连续的表读操作生成到交换系统。 这两个连续的读取操作实现了两电平的多播功能没有提供宽多播能力，即使当SCAL元件在该交换系统的不同物理区域分布。

公开(公告)号：EP0814585A3

公开(公告)日：1999-08-11

申请号：EP97480026.0

申请日：1997-05-23

申请人： International Business Machines Corporation

发明人： Galand, Claude ,  Berthaud, Jean-Marc ,  Foriel, Pierre-André ,  Nicolas, Laurent ,  Lengelle, Stéphane

IPC分类号： H04L12/56 ,  H04Q11/04

CPC分类号： H04L49/105 ,  H04L12/5602 ,  H04L41/0816 ,  H04L41/142 ,  H04L41/32 ,  H04L43/0829 ,  H04L43/0894 ,  H04L49/205 ,  H04L49/254 ,  H04L49/30 ,  H04L49/3009 ,  H04L49/3081 ,  H04L49/503 ,  H04L2012/5632 ,  H04L2012/5636 ,  H04L2012/5684

摘要： Method and system for adapting access to a packet switching network including a dynamic bandwidth adjustment mechanism which continuously monitors the mean bit rate of the signal source and the loss probability of the connection. These values are filtered to remove noise and then used to test whether the values fall within a pre-defined acceptable adaptation region in the mean bit rate, loss probability plane. Values falling outside of this region trigger bandwidth adaptation procedures which, in turn, result in acquiring a new connection bandwidth, and determining new parameters for the adaptation mechanism. Furthermore, the mechanism controls the number of connections that can be adapted by a single processor, given its processing capability. It ensures fairness between the connections in the sense that it prevents a single connection to use, on the average, a unconsiderate portion of the processor capacity.

公开(公告)号：EP0849973A3

公开(公告)日：1998-12-16

申请号：EP97480057.5

申请日：1997-08-19

申请人： International Business Machines Corporation

发明人： Blanc, Alain ,  Nicolas, Laurent ,  Gohl, Sylvie

IPC分类号： H04Q11/04

CPC分类号： H04L12/5601 ,  H04L49/108 ,  H04L49/203 ,  H04L49/255 ,  H04L49/256 ,  H04L49/309 ,  H04L2012/5627 ,  H04L2012/5672 ,  H04L2012/5681 ,  H04Q11/0478

摘要： A switching system comprising a switching structure (1130) for routing cells from a set of M input ports towards a set of M output ports. Each cell comprises a routing header defining to which of said M output ports the cell is to be routed. The system further includes a set of distributed individual Switch Core Access Layer elements (S.C.A.L.) ( 1000), each distributed SCAL element communicating through one communication link (1400, 1600) to the input and output port of the centralized switching structure (1130). Each SCAL element allows the attachment to at least one Protocol Adapter (Protocol Engine 1600- 1900) and comprises a set of corresponding PINT circuits which further includes a receive part receiving the data cells from the attached Protocol Adapter (Protocol Engine 1600). The receive part includes means for introducing at least one extra byte to every cell that will be reserved for carrying a routing header used for controlling the switching structure in a first step, then a second header that will be used for the PINT circuit when the cell will be received by the transmit part of the PINT element, in a second step. The transmit part of each PINT circuit comprises a control module that receives all the cells that are routed and generated at the considered output port. In accordance with the value carried by the extrabytes, the control means controls whether to discard or not the cell being presented at the input of the PINT circuit. While the receive part of the PINT circuit performs the introduction of the extrabytes needed for controlling the routing and multicasting operations, the accurate values that are needed for doing this are generated into the switching system by means of two successive table read operations. These two successive read operation achieves a two-level multicast feature that provides wide multicasting capabilities, even when the SCAL elements are distributed at different physical areas of the switching system.

公开(公告)号：EP1001574A1

公开(公告)日：2000-05-17

申请号：EP98480078.9

申请日：1998-11-10

申请人： International Business Machines Corporation

发明人： Fichou, Aline ,  Galand, Claude ,  Nicolas, Laurent ,  Basso, Claude

IPC分类号： H04L12/56 ,  H04Q11/04

CPC分类号： H04L12/5602 ,  H04L2012/5619 ,  H04L2012/5634 ,  H04Q11/0478

摘要： The present invention relates to a system and method for dynamically adjusting the bandwidth of a continuous bit rate virtual path connection established between a source node and a destination node within a packet or cell switching network comprising a plurality of nodes interconnected with transmission links. In the network, a bandwidth management server having access to information concerning network nodes and transmission links is defined. This server is informed each time a virtual path connection or a virtual channel connection is established on the network with an indication concerning the initial bandwidth reserved for said connection. The server detects and shares, on a continuous or periodical mode, the bandwidth which is available on transmission links among the bandwidth adjustable continuous bit rate virtual path connections and determines for each connection a new bandwidth. The source node is informed each time a new bandwidth is computed. It adjusts the bandwidth of the corresponding bandwidth adjustable continuous bit rate virtual path connection accordingly.

摘要翻译： 本发明涉及一种系统和方法，用于动态地调整源节点和一个包或信元交换网络包括与传输链路互连的节点内的多个目的地节点之间建立的连续的比特速率虚拟通路连接的带宽。 在网络中，具有获取信息关于网络节点和传输链路的带宽管理服务器定义。 此服务器的每个虚拟路径连接或虚拟信道连接与上指示关于用于所述连接保留的初始带宽的网络上建立时间通知。 服务器检测和股，在一个连续的或周期性的方式，频带宽度的所有其可在带之间的传输链路宽度可调整的连续比特率虚通道连接和确定性地雷为每个连接一个新的带宽。 每一个新的带宽计算时间源节点被告知。 它相应bestimmt相应带宽可调连续比特率虚拟通路连接的带宽。

公开(公告)号：EP0814584A3

公开(公告)日：1999-08-11

申请号：EP97480023.7

申请日：1997-05-23

申请人： International Business Machines Corporation

发明人： Galand, Claude ,  Berthaud, Jean-Marc ,  Foriel, Pierre-André ,  Nicolas, Laurent ,  Lengelle, Stéphane

IPC分类号： H04L12/56 ,  H04Q11/04

CPC分类号： H04L12/5602 ,  H04L2012/5632 ,  H04L2012/5636 ,  H04L2012/5651 ,  H04Q11/0478

摘要： Method and system for adapting access to a packet switching network including a dynamic bandwidth adjustment mechanism which continuously monitors the mean bit rate of the signal source and the loss probability of the connection. These values are filtered to remove noise and then used to test whether the values fall within a pre-defined acceptable adaptation region in the mean bit rate, loss probability plane. Values falling outside of this region trigger bandwidth adaptation procedures which, in turn, result in acquiring a new connection bandwidth, and determining new parameters for the adaptation mechanism.

摘要翻译： 用于适应对包交换网络的访问的方法和系统，包括连续监视信号源的平均比特率和连接的丢失概率的动态带宽调整机制。 对这些值进行滤波以去除噪声，然后用于测试这些值是否落入平均比特率，丢失概率平面中的预定义可接受自适应区域内。 落在该区域之外的值触发带宽适配过程，这又导致获得新的连接带宽，并确定适应机制的新参数。

公开(公告)号：EP0781008A1

公开(公告)日：1997-06-25

申请号：EP95480199.9

申请日：1995-12-20

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： Duault, Maurice ,  Nicolas, Laurent ,  Galand, Claude

IPC分类号： H04L12/56 ,  H04Q11/04

CPC分类号： H04L49/3009 ,  H04L49/205 ,  H04L49/254 ,  H04L49/3081 ,  H04Q11/0478

摘要： In order to interconnect over the ATM cell switching network two end users which want to exchange different kinds of traffic, as voice in different coding schemes, fax, data traffic and signaling traffic, the two end users are connected with a plurality of virtual channel identifiers. However, within the network the plurality of virtual channel identifiers are treated as a single connection. There is only a single entry in the connection table of each network node. Part of the virtual channel identifier is ignored in the network nodes and remains unchanged. Each virtual channel can be considered independently at the end user level, while the network manages a single connection which saves network resources.

摘要翻译： 为了在ATM信元交换网络上互连两个希望交换不同业务的最终用户，作为不同编码方案，传真，数据业务和信令业务中的语音，两个终端用户与多个虚拟信道标识符 。 然而，在网络内，多个虚拟信道标识符被视为单个连接。 每个网络节点的连接表中只有一个条目。 虚拟通道标识符的一部分在网络节点中被忽略，并保持不变。 每个虚拟通道可以在最终用户级别独立考虑，而网络管理一个可以节省网络资源的连接。