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1. 发明申请

WO1997004557A1 MINIMUM GUARANTEED CELL RATE METHOD AND APPARATUS 审中-公开
标题翻译：最小保证细胞率方法和装置
公开(公告)号：WO1997004557A1
公开(公告)日：1997-02-06
申请号：PCT/US1996011936
申请日：1996-07-18
申请人： ASCOM NEXION INC. , MANNING, Thomas, A. , CALDARA, Stephen, A. , HAUSER, Stephen, A.
发明人： ASCOM NEXION INC.
IPC分类号： H04L12/54
CPC分类号： H04L47/18 , G06F15/17375 , H04J3/0632 , H04J3/0682 , H04J3/0685 , H04L7/046 , H04L12/4608 , H04L12/5601 , H04L12/5602 , H04L41/0896 , H04L47/10 , H04L47/11 , H04L47/26 , H04L47/266 , H04L47/29 , H04L47/30 , H04L47/621 , H04L47/70 , H04L47/745 , H04L47/805 , H04L47/822 , H04L49/106 , H04L49/107 , H04L49/153 , H04L49/1553 , H04L49/1576 , H04L49/203 , H04L49/253 , H04L49/255 , H04L49/256 , H04L49/3081 , H04L49/309 , H04L49/455 , H04L49/552 , H04L49/555 , H04L69/32 , H04L69/324 , H04L2012/5614 , H04L2012/5616 , H04L2012/5627 , H04L2012/5628 , H04L2012/5629 , H04L2012/5631 , H04L2012/5632 , H04L2012/5634 , H04L2012/5635 , H04L2012/5642 , H04L2012/5643 , H04L2012/5647 , H04L2012/5648 , H04L2012/5649 , H04L2012/5651 , H04L2012/5652 , H04L2012/5672 , H04L2012/5679 , H04L2012/5681 , H04L2012/5682 , H04L2012/5683 , H04L2012/5685 , H04Q11/0478
摘要： A method and apparatus for providing a minimum per-connection banwidth guarantee and the ability to employ shared bandwidth thereabove in an environment having both virtual-connection and link-level flow control. A buffer pool (28) downstream of a transmitter (12) and disposed in a receiver (14) is divided among a first portion dedicated for allocated bandwidth cell traffic (300) and a second portion for dynamic bandwidth cell traffic (128). Link flow control enables the receiver buffer (28) sharing while maintaining the per-connection bandwidth guarantee. No cell-loss due to buffer overflows at the receiver (14) is also guaranteed, resulting in high link-utilization in a frame traffic environment, as well as low delay in the absence of cell retransmission. A higher and thus more efficient utilization of receiver cell buffers (28) is achieved.
摘要翻译：一种用于在具有虚拟连接和链路级流量控制的环境中提供最小每连接禁止带宽保证和在其上采用共享带宽的能力的方法和装置。在发射机（12）下游并且设置在接收机（14）中的缓冲池（28）在专用于分配的带宽小区业务（300）的第一部分和用于动态带宽小区业务（128）的第二部分之间划分。链路流控制使得接收缓冲器（28）共享同时保持每连接带宽保证。也保证在接收机（14）处由于缓冲器溢出而导致的信元丢失，导致帧业务环境中的高链路利用率，以及在不存在小区重传的情况下的低延迟。实现了接收器单元缓冲器（28）的更高且更有效的利用。

2. 发明申请

WO1997004555A1 METHOD AND APPARATUS FOR QUEUING DATA IN A COMMUNICATIONS DEVICE 审中-公开
标题翻译：在通信设备中排队数据的方法和装置
公开(公告)号：WO1997004555A1
公开(公告)日：1997-02-06
申请号：PCT/US1996011986
申请日：1996-07-18
申请人： ASCOM NEXION INC.
发明人： ASCOM NEXION INC. , HAUSER, Stephen, A. , CALDARA, Stephen, A. , MANNING, Thomas, A.
IPC分类号： H04L12/50
CPC分类号： H04L49/253 , G06F15/17375 , H04J3/0682 , H04J3/0685 , H04L7/046 , H04L12/4608 , H04L12/5601 , H04L12/5602 , H04L41/0896 , H04L47/10 , H04L47/11 , H04L47/18 , H04L47/26 , H04L47/266 , H04L47/29 , H04L47/30 , H04L47/621 , H04L49/106 , H04L49/107 , H04L49/153 , H04L49/1553 , H04L49/1576 , H04L49/203 , H04L49/255 , H04L49/256 , H04L49/3081 , H04L49/309 , H04L49/455 , H04L49/552 , H04L49/555 , H04L69/32 , H04L69/324 , H04L2012/5614 , H04L2012/5616 , H04L2012/5627 , H04L2012/5628 , H04L2012/5629 , H04L2012/5631 , H04L2012/5632 , H04L2012/5634 , H04L2012/5635 , H04L2012/5642 , H04L2012/5643 , H04L2012/5647 , H04L2012/5648 , H04L2012/5649 , H04L2012/5651 , H04L2012/5652 , H04L2012/5672 , H04L2012/5679 , H04L2012/5681 , H04L2012/5682 , H04L2012/5683 , H04L2012/5685 , H04Q11/0478 , H04W28/14
摘要： The invention comprises a method and apparatus for queuing data in a communications device (12). In accordance with the method of the invention, a plurality of input signals (36) are received on input ports (30) of the communications device (12). At least one input signal (36) comprises at least one virtual connection (38). A first unique queue (44) is associated with each virtual connection (38). Data (60) associated with a first virtual connection (38) are queued in the first unique queue (44) associated with the first virtual connection (38).
摘要翻译：本发明包括一种用于在通信设备（12）中排队数据的方法和装置。根据本发明的方法，在通信设备（12）的输入端口（30）上接收多个输入信号（36）。至少一个输入信号（36）包括至少一个虚拟连接（38）。第一唯一队列（44）与每个虚拟连接（38）相关联。与第一虚拟连接（38）相关联的数据（60）在与第一虚拟连接（38）相关联的第一唯一队列（44）中排队。

3. 发明申请

WO1997004548A1 REDUNDANT SWITCH SYSTEM AND METHOD OF OPERATION 审中-公开
标题翻译：冗余切换系统和操作方法
公开(公告)号：WO1997004548A1
公开(公告)日：1997-02-06
申请号：PCT/US1996011962
申请日：1996-07-18
申请人： ASCOM NEXION INC.
发明人： ASCOM NEXION INC. , MANNING, Thomas, A. , CALDARA, Stephen, A. , HAUSER, Stephen, A.
IPC分类号： H04L01/22
CPC分类号： H04L49/253 , G06F15/17375 , H04J3/0682 , H04J3/0685 , H04L7/046 , H04L12/4608 , H04L12/5601 , H04L12/5602 , H04L41/0896 , H04L47/10 , H04L47/11 , H04L47/18 , H04L47/26 , H04L47/266 , H04L47/29 , H04L47/30 , H04L47/621 , H04L49/106 , H04L49/107 , H04L49/153 , H04L49/1553 , H04L49/1576 , H04L49/203 , H04L49/255 , H04L49/256 , H04L49/3081 , H04L49/309 , H04L49/455 , H04L49/552 , H04L49/555 , H04L69/32 , H04L69/324 , H04L2012/5614 , H04L2012/5616 , H04L2012/5627 , H04L2012/5628 , H04L2012/5629 , H04L2012/5631 , H04L2012/5632 , H04L2012/5634 , H04L2012/5635 , H04L2012/5642 , H04L2012/5643 , H04L2012/5647 , H04L2012/5648 , H04L2012/5649 , H04L2012/5651 , H04L2012/5652 , H04L2012/5672 , H04L2012/5679 , H04L2012/5681 , H04L2012/5682 , H04L2012/5683 , H04L2012/5685 , H04Q11/0478 , H04W28/14
摘要： A redundant switch (50) is provided for performing a switch fabric test. The redundant switch (50) includes a foreground switch fabric controller (24) for controlling a foreground switch fabric (26), a background switch fabric controller (124) for controlling a background switch fabric (126), and a first I/O module (14) in communication with the foreground switch fabric controller (24). The first I/O module (14) sends, at the request of the foreground switch fabric controller (24), a test cell to an input of the background switch fabric (126) and receives the test cell from a corresponding output of the background switch fabric (126). The first I/O module (14) determines if an error occurred and provides an error signal to the foreground switch fabric controller (24) in response if an error occurred. The foreground switch fabric controller (24) may log the error signal or enable an alarm or indicator in response.
摘要翻译：提供冗余开关（50）用于执行交换结构测试。冗余开关（50）包括用于控制前台交换结构（26）的前台交换结构控制器（24），用于控制后台交换结构（126）的后台交换结构控制器（124）和第一I / O模块（14）与前景交换结构控制器（24）通信。第一I / O模块（14）根据前景交换结构控制器（24）的请求将测试单元发送到背景交换结构（126）的输入端，并从相应的背景输出端接收测试单元开关布（126）。如果发生错误，则第一I / O模块（14）确定是否发生错误并且向前台交换结构控制器（24）提供错误信号。前台交换结构控制器（24）可以记录错误信号或响应报警或指示器。

4. 发明申请

WO1997004543A3 ALLOCATED AND DYNAMIC SWITCH FLOW CONTROL 审中-公开
公开(公告)号：WO1997004543A3
公开(公告)日：1997-02-06
申请号：PCT/US1996011942
申请日：1996-07-18
申请人： ASCOM NEXION INC. , CALDARA, Stephen, A. , HAUSER, Stephen, A. , MANNING, Thomas, A.
发明人： ASCOM NEXION INC.
IPC分类号： H04L12/56

5. 发明申请

WO1997004542A2 MULTIPOINT-TO-POINT ARBITRATION IN A NETWORK SWITCH 审中-公开
标题翻译：网络交换机中的多点到点仲裁
公开(公告)号：WO1997004542A2
公开(公告)日：1997-02-06
申请号：PCT/US1996011922
申请日：1996-07-18
申请人： ASCOM NEXION INC. , MANNING, Thomas, A. , CALDARA, Stephen, A. , HAUSER, Stephen, A. , COLSMAN, Matthias, L.
发明人： ASCOM NEXION INC.
IPC分类号： H04J00/00
CPC分类号： H04L47/18 , G06F15/17375 , H04J3/0682 , H04J3/0685 , H04L7/046 , H04L12/18 , H04L12/4608 , H04L12/5601 , H04L12/5602 , H04L41/0896 , H04L47/10 , H04L47/11 , H04L47/26 , H04L47/266 , H04L47/29 , H04L47/30 , H04L47/621 , H04L49/106 , H04L49/107 , H04L49/153 , H04L49/1553 , H04L49/1576 , H04L49/203 , H04L49/253 , H04L49/255 , H04L49/256 , H04L49/3081 , H04L49/309 , H04L49/455 , H04L49/552 , H04L49/555 , H04L69/32 , H04L69/324 , H04L2012/5614 , H04L2012/5616 , H04L2012/5627 , H04L2012/5628 , H04L2012/5629 , H04L2012/5631 , H04L2012/5632 , H04L2012/5634 , H04L2012/5635 , H04L2012/5642 , H04L2012/5643 , H04L2012/5647 , H04L2012/5648 , H04L2012/5649 , H04L2012/5651 , H04L2012/5652 , H04L2012/5672 , H04L2012/5679 , H04L2012/5681 , H04L2012/5682 , H04L2012/5683 , H04L2012/5685 , H04Q11/0478
摘要： An apparatus and a method are disclosed for arbitrating between streams of ATM cells, or sources for a connection, on multiple input port processors vying for an opportunity to be transmitted as a fixed bandwidth, or allocated, connection on a single output port through a network switch. The network switch maintains a plurality of input port processors, at least one output port, and input and output buffers associated with the respective input and output ports. Streams of ATM cells enter the network switch as sources for a connection through the multiple input port processors and are buffered in the input buffers. The ATM cells are then routed from the input buffers to an output buffer in the output port. The network switch also provides a multipoint topology controller (MTC) and a bandwidth arbiter (BA) for performing the arbitration. The MTC looks up a Fan-In-Number (FIN) identifier for every cell time slot in a switch allocation table (SAT) for which a scheduling list has an entry, assuming that the input buffers, which are arranged into queues, that are listed on the scheduling list have ATM cells to send and the scheduling list has not exceeded its bandwidth allocation. The BA compares all the valid FIN identifies and, if there is a match, performs multipoint-to-point arbitration among the input port processors that have scheduling lists which reference that FIN. The BA reads the FIN state information and gives the bandwidth to the input port processor having the highest priority. The BA then updates the FIN state information with data that indicates which input port processor will have the highest priority on the next arbitration for this multipoint-to-point connection.
摘要翻译：公开了一种装置和方法，用于在多个输入端口处理器上的ATM信元流或连接源之间进行仲裁，以争取通过网络在单个输出端口上作为固定带宽传输的机会或分配的连接开关。网络交换机维护多个输入端口处理器，至少一个输出端口以及与各个输入和输出端口相关联的输入和输出缓冲器。 ATM信元的流进入网络交换机作为通过多个输入端口处理器进行连接的源，并被缓冲在输入缓冲器中。然后将ATM信元从输入缓冲器路由到输出端口中的输出缓冲器。网络交换机还提供用于执行仲裁的多点拓扑控制器（MTC）和带宽仲裁器（BA）。 MTC在调度列表具有条目的交换机分配表（SAT）中为每个小区时隙查找扇区号（FIN）标识符，假定排列成队列的输入缓冲区是列在调度列表上的ATM信元要发送，调度列表没有超过其带宽分配。 BA比较所有有效的FIN标识，如果有匹配，则在具有引用该FIN的调度列表的输入端口处理器之间进行多点对点仲裁。 BA读取FIN状态信息，并将带宽提供给具有最高优先级的输入端口处理器。然后，BA通过数据更新FIN状态信息，数据指示在该多点到点连接的下一个仲裁中哪个输入端口处理器将具有最高优先级。

6. 发明申请

WO1997026737A1 A RELIABLE AND FLEXIBLE MULTICAST MECHANISM FOR ATM NETWORKS 审中-公开
标题翻译：一种用于ATM网络的可靠和灵活的多播机制
公开(公告)号：WO1997026737A1
公开(公告)日：1997-07-24
申请号：PCT/US1997000488
申请日：1997-01-10
申请人： ASCOM NEXION INC.
发明人： ASCOM NEXION INC. , HUNT, Douglas, H. , NAIR, Raj, Krishnan
IPC分类号： H04L12/18
CPC分类号： H04Q11/0478 , H04L2012/5619 , H04L2012/5642
摘要： A method is disclosed for facilitating multicast operation in a network in which a data unit is multicast from a root node to a plurality of leaves via a plurality of branching point nodes in response to feedback processed at each branching point node. At least one cell forwarding technique is selected from a plurality of cell forwarding techniques at the respective branching point nodes. The cell forwarding techniques facilitate multicast operation by controlling forwarding and discard of multicast cells. The forwarding techniques are realized via use of a ring buffer (35) in which cells are stored prior to forwarding. Manipulating head (37) and tail (39) pointers associated with the ring buffer (35) allows for a plurality of desirable forwarding techniques.
摘要翻译：公开了一种方法，用于响应于在每个分支点节点处处理的反馈，在网络中促进多播操作，其中数据单元经由多个分支点节点从根节点多播到多个叶。从相应分支点节点处的多个小区转发技术中选择至少一个小区转发技术。小区转发技术通过控制组播小区的转发和丢弃来促进组播操作。转发技术通过使用其中在转发之前存储小区的环形缓冲器（35）来实现。与环形缓冲器（35）相关联的操纵头（37）和尾部（39）指针允许多种期望的转发技术。

7. 发明申请

WO1997004567A1 METHOD AND APPARATUS FOR DISCARDING FRAMES IN A COMMUNICATIONS DEVICE 审中-公开
标题翻译：用于在通信设备中拆除框架的方法和装置
公开(公告)号：WO1997004567A1
公开(公告)日：1997-02-06
申请号：PCT/US1996011960
申请日：1996-07-18
申请人： ASCOM NEXION INC.
发明人： ASCOM NEXION INC. , CALDARA, Stephen, A. , HAUSER, Stephen, A. , MANNING, Thomas, A. , PECK, David, N.
IPC分类号： H04L12/56
CPC分类号： H04L47/18 , G06F15/17375 , H04J3/0682 , H04J3/0685 , H04L7/046 , H04L12/4608 , H04L12/5601 , H04L12/5602 , H04L41/0896 , H04L47/10 , H04L47/11 , H04L47/26 , H04L47/266 , H04L47/29 , H04L47/30 , H04L47/621 , H04L49/106 , H04L49/107 , H04L49/153 , H04L49/1553 , H04L49/1576 , H04L49/203 , H04L49/253 , H04L49/255 , H04L49/256 , H04L49/3081 , H04L49/309 , H04L49/455 , H04L49/552 , H04L49/555 , H04L69/32 , H04L69/324 , H04L2012/5614 , H04L2012/5616 , H04L2012/5627 , H04L2012/5628 , H04L2012/5629 , H04L2012/5631 , H04L2012/5632 , H04L2012/5634 , H04L2012/5635 , H04L2012/5642 , H04L2012/5643 , H04L2012/5647 , H04L2012/5648 , H04L2012/5649 , H04L2012/5651 , H04L2012/5652 , H04L2012/5672 , H04L2012/5679 , H04L2012/5681 , H04L2012/5682 , H04L2012/5683 , H04L2012/5685 , H04Q11/0478 , H04W28/14
摘要： The invention comprises a method and apparatus for discarding frames in a communications device. In accordance with the method of the invention, a plurality of cells are received (24) representing a plurality of frames wherein each cell comprises a data portion and a header portion including a cell loss priority indicator. At least some of the cells are stored in a buffer. It is determined if the number of cells in the buffer exceeds a first threshold (32) when a first cell including an end of file marker is received (30). A series of cells received between the first cell and a second cell are discarded (42) if the first threshold was exceeded in the determining step and if the cell loss priority indicator for a cell in the series of cells is set to a first state. The second cell comprises a cell including an end of frame file marker.
摘要翻译：本发明包括一种用于在通信设备中丢弃帧的方法和装置。根据本发明的方法，接收表示多个帧的多个小区（24），其中每个小区包括数据部分和包括小区丢失优先级指示符的报头部分。至少一些单元格存储在缓冲器中。当接收到包括文件标记结束的第一个单元时，确定缓冲器中的单元数目是否超过第一阈值（32）（30）。如果在确定步骤中超过了第一阈值，并且该单元格系列中的单元的单元丢失优先级指示符被设置为第一状态，则在第一单元和第二单元之间接收的一系列单元被丢弃（42）。第二个单元包括一个包含帧文件标记结束的单元。

8. 发明申请

WO1997004566A1 CONVERTING BETWEEN AN INTERNAL CELL AND MULTIPLE STANDARD ASYNCHRONOUS TRANSFER MODE CELLS 审中-公开
标题翻译：内部细胞与多个标准异步转移模式细胞之间的转换
公开(公告)号：WO1997004566A1
公开(公告)日：1997-02-06
申请号：PCT/US1996011959
申请日：1996-07-18
申请人： ASCOM NEXION INC.
发明人： ASCOM NEXION INC. , CALDARA, Stephen, A. , HAUSER, Stephen, A. , MANNING, Thomas, A.
IPC分类号： H04L12/56
CPC分类号： H04L47/18 , G06F15/17375 , H04J3/0682 , H04J3/0685 , H04L7/046 , H04L12/4608 , H04L12/5601 , H04L12/5602 , H04L41/0896 , H04L47/10 , H04L47/11 , H04L47/26 , H04L47/266 , H04L47/29 , H04L47/30 , H04L47/621 , H04L49/106 , H04L49/107 , H04L49/153 , H04L49/1553 , H04L49/1576 , H04L49/203 , H04L49/253 , H04L49/255 , H04L49/256 , H04L49/3081 , H04L49/309 , H04L49/455 , H04L49/552 , H04L49/555 , H04L69/32 , H04L69/324 , H04L2012/5614 , H04L2012/5616 , H04L2012/5627 , H04L2012/5628 , H04L2012/5629 , H04L2012/5631 , H04L2012/5632 , H04L2012/5634 , H04L2012/5635 , H04L2012/5642 , H04L2012/5643 , H04L2012/5647 , H04L2012/5648 , H04L2012/5649 , H04L2012/5651 , H04L2012/5652 , H04L2012/5672 , H04L2012/5679 , H04L2012/5681 , H04L2012/5682 , H04L2012/5683 , H04L2012/5685 , H04Q11/0478 , H04W28/14
摘要： A switch control module (16) is provided for converting between an internal cell (23) and a first standard asynchronous transfer mode cell (34) and second standard asynchronous transfer mode cell (36). The internal cell (23) includes an internal header (42), payload information (44), and miscellaneous information (46). The first standard asynchronous transfer mode cell (34) includes the internal header (42) and miscellaneous information (46) of the internal cell (23). The second standard asynchronous transfer mode cell (36) includes the payload information (44) of the internal cell (23).
摘要翻译：提供了一种开关控制模块（16），用于在内部单元（23）和第一标准异步传输模式单元（34）和第二标准异步传输模式单元（36）之间进行转换。内部单元（23）包括内部标题（42），有效载荷信息（44）和杂项信息（46）。第一标准异步传输模式单元（34）包括内部单元（42）的内部标题（42）和杂项信息（46）。第二标准异步传输模式单元（36）包括内部单元（23）的有效载荷信息（44）。

9. 发明申请

WO1997004561A1 LINK SCHEDULING 审中-公开
标题翻译：链接调度
公开(公告)号：WO1997004561A1
公开(公告)日：1997-02-06
申请号：PCT/US1996011919
申请日：1996-07-18
申请人： ASCOM NEXION INC. , HAUSER, Stephen, A. , BUBENIK, Richard, G. , CALDARA, Stephen, A. , GADDIS, Michael, E. , MANNING, Thomas, A. , MERIDETH, James, M. , STROUBLE, Raymond, L.
发明人： ASCOM NEXION INC.
IPC分类号： H04L12/56
CPC分类号： H04L47/18 , G06F15/17375 , H04J3/0682 , H04J3/0685 , H04L7/046 , H04L12/4608 , H04L12/5601 , H04L12/5602 , H04L41/0896 , H04L47/10 , H04L47/11 , H04L47/26 , H04L47/266 , H04L47/29 , H04L47/30 , H04L47/621 , H04L49/106 , H04L49/107 , H04L49/153 , H04L49/1553 , H04L49/1576 , H04L49/203 , H04L49/253 , H04L49/255 , H04L49/256 , H04L49/3081 , H04L49/309 , H04L49/455 , H04L49/552 , H04L49/555 , H04L2012/5614 , H04L2012/5616 , H04L2012/5627 , H04L2012/5628 , H04L2012/5629 , H04L2012/5631 , H04L2012/5632 , H04L2012/5634 , H04L2012/5635 , H04L2012/5642 , H04L2012/5643 , H04L2012/5647 , H04L2012/5648 , H04L2012/5649 , H04L2012/5651 , H04L2012/5652 , H04L2012/5672 , H04L2012/5679 , H04L2012/5681 , H04L2012/5682 , H04L2012/5683 , H04L2012/5685 , H04Q11/0478
摘要： Methods and apparatus for scheduling cell transmission over a network link by a switch. The switch includes a plurality of queues associated with each link. Lists of queues are maintained for each link. In one embodiment, each link is associated with more than one type of list (with the list type corresponding to a scheduling category) (61) and more than one prioritized list of each type (with the priority of the list corresponding to a quality of service). The scheduling lists (61) are accessed to permit cell transmission from a queue (35, 28) contained therein in a predetermined sequence as a function of scheduling category, priority within a particular scheduling category and whether the bandwidth requirement for the particular scheduling category has been met. With this arrangement, maximum permissible delay requirements for each scheduling category are met.
摘要翻译：用于通过交换机在网络链路上调度小区传输的方法和装置。交换机包括与每个链路相关联的多个队列。维护每个链接的队列列表。在一个实施例中，每个链路与多于一种类型的列表（具有对应于调度类别的列表类型）（61）和多于一种每种类型的优先级列表（列表的优先级对应于服务）。访问调度列表（61）以允许以预定顺序从包含在其中的队列（35,28）进行小区传输，作为调度类别的函数，特定调度类别内的优先级，以及特定调度类别的带宽需求是否具有已经满足通过这种安排，满足每个调度类别的最大允许延迟要求。

10. 发明申请

WO1997010656A1 TRANSMITTER CONTROLLED FLOW CONTROL FOR BUFFER ALLOCATION IN WIDE AREA ATM NETWORKS 审中-公开
标题翻译：发送机控制流量控制在宽域ATM网络中的缓冲区分配
公开(公告)号：WO1997010656A1
公开(公告)日：1997-03-20
申请号：PCT/US1996014433
申请日：1996-09-13
申请人： ASCOM NEXION INC. , NAIR, Raj, Krishnan , HUNT, Douglas, H.
发明人： ASCOM NEXION INC.
IPC分类号： H04J03/24
CPC分类号： H04L12/5602 , H04J3/247 , H04L2012/5619 , H04L2012/5636
摘要： A flow control technique for wide area ATM networks is disclosed in which allocation of buffers in a receiver switch (10) is controlled by a transmitter switch (12). The receiver switch (10) periodically transmits feedback messages to the transmitter switch (12) indicative of the state of the fullness of the receiver switch buffers (32). The transmitter switch (12) calculates updated receiver buffer fullness based upon the feedback message and the number of cells (16) transmitted from the transmitter switch (12) to the receiver switch (10) since the feedback message was sent. Transmission of cells (22) from the transmitter switch (12) to the receiver switch (10) is then controlled in accordance with an allocation technique, thereby allocating buffers (32) in the receiving switch (10). The technique may be a roll-off technique in which the number of buffers (32) available to each flow in the transmitter switch (12) is reduced geometrically as the updated receiver buffer state is calculated to be more full. The flow control technique may be applied on either a per link or per flow basis.
摘要翻译：公开了一种用于广域ATM网络的流控制技术，其中接收器开关（10）中的缓冲器的分配由发射机开关（12）控制。接收器开关（10）周期性地将反馈消息发送到指示接收器开关缓冲器（32）的充满状态的发射器开关（12）。发送器开关（12）根据反馈消息和从发送器开关（12）发送到接收器开关（10）的单元（16）的数量，计算更新的接收器缓冲器充满度。然后根据分配技术来控制从发射机交换机（12）向接收机交换机（10）发送小区（22），由此在接收交换机（10）中分配缓冲区（32）。该技术可以是滚降技术，其中当更新的接收器缓冲器状态被计算为更加满时，在发射器开关（12）中的每个流可用的缓冲器（32）的数量几何地减小。流控制技术可以在每个链路或每个流的基础上应用。

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