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1. 发明授权

US5440565A Test method and apparatus capable of testing reception of a desired cell through a virtual path 失效
标题翻译：能够通过虚拟路径测试所需单元的接收的测试方法和装置
公开(公告)号：US5440565A
公开(公告)日：1995-08-08
申请号：US259120
申请日：1994-06-13
申请人： Akihiro Miyamoto , Ryuichi Ikematsu , Haruhiko Matsunaga , Hiromi Ueda
发明人： Akihiro Miyamoto , Ryuichi Ikematsu , Haruhiko Matsunaga , Hiromi Ueda
IPC分类号： H04Q11/04 , H04L12/26 , H04L12/70 , G06F11/30 , H04B3/46
CPC分类号： H04Q11/0478 , H04L2012/5628
摘要： In a test method and apparatus for testing a virtual path in an asynchronous transfer mode system, a sequence number is included in an operation administrating monitoring (OAM) cell to specify the OAM cell for testing a virtual path between transmission and reception sides. The sequence number is inserted into the OAM cell by the use of an idle cell and is received by a sequence number test circuit included in the reception side. The sequence number in the OAM is collated with a result of counting the OAM cell in the reception side to detect coincidence or non-coincidence between the sequence number and the result of counting. On detecting the non-coincidence, a loss of the OAM cell or wrong reception of the OAM cell is detected on the reception side. Otherwise normal operation is confirmed between the transmission and the reception sides.
摘要翻译：在用于测试异步传输模式系统中的虚拟路径的测试方法和装置中，在操作管理监视（OAM）小区中包括序列号，以指定用于测试发送侧和接收侧之间的虚拟路径的OAM小区。通过使用空闲单元将序列号插入到OAM小区中，并且由包括在接收侧的序列号测试电路接收。将OAM中的序列号与接收侧的OAM单元进行计数的结果对照，以检测序列号与计数结果之间的一致性或不一致性。在检测到不一致时，在接收侧检测到OAM信元的丢失或OAM信元的错误接收。否则在发送侧和接收侧之间确认正常操作。

2. 发明授权

US5634097A Virtual path connector and virtual path tracing method and apparatus 失效
标题翻译：虚拟路径连接器和虚拟路径跟踪方法和设备
公开(公告)号：US5634097A
公开(公告)日：1997-05-27
申请号：US027643
申请日：1993-03-08
申请人： Yoshihiro Ashi , Toshihiko Fujita , Hiromi Ueda , Haruhiko Matsunaga
发明人： Yoshihiro Ashi , Toshihiko Fujita , Hiromi Ueda , Haruhiko Matsunaga
IPC分类号： H04L12/70 , H04Q11/04 , G06F11/00 , H04L12/56
CPC分类号： H04Q11/0478 , H04L2012/5623 , H04L2012/5626
摘要： A method and apparatus of tracing VP's (virtual paths) wherein operational information of VP connectors are collected through OAM (operation and maintenance) cells. The VP connectors establish a connection at a VP level within a network in which the cells are transferred in an ATM (asynchronous transfer mode). Each VP connector detects an OAM cell for VP tracing as received from another of the VP connectors, and judges if an area for affixing the operational information in the VP connector itself exists in the detected OAM cell. In the VP connector when the area exists, the detected OAM cell is specified to be the OAM cell for writing the operational information thereinto, and the specified OAM cell is sent out after affixing the operational information thereto. When the area does not exit, the OAM cell received from the other VP connector is sent out after indicating therein that the received OAM cell is not the rearmost cell, the OAM cell for the VP tracing is generated anew, and the generated cell is sent out after indicating therein that the generated OAM cell is the rearmost cell. Also the operational information is affixed to newly generated OAM cell.
摘要翻译：追踪VP（虚拟路径）的方法和装置，其中通过OAM（操作和维护）单元收集VP连接器的操作信息。 VP连接器在网络中的VP级建立连接，其中小区在ATM（异步传输模式）中传输。每个VP连接器检测到从另一个VP连接器接收到的用于VP跟踪的OAM小区，并且判断在所检测的OAM小区中是否存在用于附加VP连接器中的操作信息的区域。在存在该区域的VP连接器中，检测到的OAM单元被指定为用于写入其中的操作信息的OAM单元，并且在将操作信息附加到其上之后发送指定的OAM单元。当该区域不退出时，从其他VP连接器接收的OAM小区在其中指示接收到的OAM小区不是最后一个小区之后被发出，用于VP跟踪的OAM小区重新生成，并且生成的小区被发送在其中指示所生成的OAM信元是最后一个信元。操作信息也附加到新生成的OAM单元。

3. 发明授权

US5337307A Method of tracing virtual path operation information and apparatus applied thereto 失效
标题翻译：跟踪虚拟路径操作信息和应用于其的设备的方法
公开(公告)号：US5337307A
公开(公告)日：1994-08-09
申请号：US975377
申请日：1992-11-13
申请人： Mutsumi Sato , Motoo Nishihara , Haruhiko Matsunaga , Hiromi Ueda
发明人： Mutsumi Sato , Motoo Nishihara , Haruhiko Matsunaga , Hiromi Ueda
IPC分类号： H04L12/24 , H04L12/70 , H04Q11/04 , H04L12/56
CPC分类号： H04L41/32 , H04Q11/0478 , H04L2012/5619 , H04L2012/5625 , H04L2012/5652
摘要： Virtual path operation information of each of the stations of an synchronous transfer mode telecommunications network is traced using OAM cells. OAM cells used for operation and maintenance control of the asynchronous transfer mode telecommunication network have a pointer indicative of the position where virtual path operation information is recorded and an area for storing virtual path operation information of a certain number of stations. Each station records virtual path operation information in an OAM cell, updates the pointer and sends the OAM cell to the next station on a selected path. When the payload of the OAM cell becomes full, the OAM cell records new OAM cell generation request information and the pointer is changed to the final value and is sent to the next station. A station which receives the OAM cell erases the new OAM cell generation request information, transfers the received OAM cell, generates a new OAM cell, initializes the pointer, and transfers the new OAM cell which has its own virtual path operation information to a next station.
摘要翻译：使用OAM小区来跟踪同步传输模式电信网络的每个站的虚拟路径操作信息。用于异步传输模式电信网络的操作和维护控制的OAM小区具有指示记录虚拟路径操作信息的位置的指针和用于存储一定数量站的虚拟路径操作信息的区域。每个站在OAM小区中记录虚拟路径操作信息，更新指针并将OAM小区发送到所选路径上的下一个站。当OAM小区的有效载荷变满时，OAM小区记录新的OAM小区生成请求信息，并将指针改变为最终值，并发送给下一个站。接收到OAM小区的站消除新的OAM小区生成请求信息，传送接收到的OAM小区，生成新的OAM小区，初始化指针，将具有其自己的虚拟路径操作信息的新的OAM小区传送给下一个站。

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