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    Ring-type communication network
    3.
    发明授权
    Ring-type communication network 失效
    环型通信网络

    公开(公告)号：US5107490A

    公开(公告)日：1992-04-21

    申请号：US726497

    申请日：1985-04-24

    申请人： Philip D. Wilson ,  Richard D. Serafin ,  Paul W. Kelley ,  Tadeusz Witkowicz

    发明人： Philip D. Wilson ,  Richard D. Serafin ,  Paul W. Kelley ,  Tadeusz Witkowicz

    IPC分类号： H04B10/213 ,  H04J3/06 ,  H04L12/433 ,  H04L12/46

    CPC分类号： H04L12/4637 ,  H04J3/0614 ,  H04L12/433

    摘要： An optical fiber ring network carries data in frames of bit intervals that define a number of independent communication bands each represented by a series of spaced apart bit intervals no more than one of which falls within any given frame. The network serves a collision detection protocol by nodes that communicate with the user devices in accordance with the collision detection protocol but communicates with the ring in accordance with a non-collision type protocol. The network uses light that is amplitude modulated at more than two levels. The data frame boundaries are defined by violations of an alternate mark inversion data encoding technique. Phase synchronization of two streams of frames is accomplished by sampling frames at times governed by a selected one of two frame boundary clocks derived respectively from the two frames.

    摘要翻译： 光纤环网络以比特间隔的帧的形式携带数据，该数据段定义了由一系列间隔开的位间隔表示的多个独立的通信频带，其间不超过任何给定的帧。 该网络根据冲突检测协议为与用户设备通信的节点提供冲突检测协议，但是根据非冲突类型协议与环进行通信。 网络使用在两个以上级别进行幅度调制的光。 数据帧边界由违反替代标记反转数据编码技术定义。 两帧流的相位同步通过在由两个帧分别导出的两个帧边界时钟中所选择的一个控制的时间采样帧来实现。

    Ring-type communication network
    4.
    发明授权
    Ring-type communication network 失效
    环型通信网络

    公开(公告)号：US5295012A

    公开(公告)日：1994-03-15

    申请号：US870541

    申请日：1992-04-17

    申请人： Philip D. Wilson ,  Richard D. Serafin ,  Paul W. Kelley ,  Tadeusz Witkowicz

    发明人： Philip D. Wilson ,  Richard D. Serafin ,  Paul W. Kelley ,  Tadeusz Witkowicz

    IPC分类号： H04B10/213 ,  H04J3/06 ,  H04L12/433 ,  H04L12/46 ,  H04J14/08

    CPC分类号： H04L12/4637 ,  H04J3/0614 ,  H04L12/433

    摘要： An optical fiber ring network carries data in frames of bit intervals that define a number of independent communication bands each represented by a series of spaced apart bit intervals no more than one of which falls within any given frame. The network serves a collision detection protocol by nodes that communicate with the user devices in accordance with the collision detection protocol but communicates with the ring in accordance with a non-collision type protocol. The network uses light that is amplitude modulated at more than two levels. The data frame boundaries are defined by violations of an alternate mark inversion data encoding technique. Phase synchronization of two streams of frames is accomplished by sampling frames at times governed by a selected one of two frame boundary clocks derived respectively from the two frames.

    摘要翻译： 光纤环网络以比特间隔的帧的形式携带数据，该数据段定义了由一系列间隔开的位间隔表示的多个独立的通信频带，其间不超过任何给定的帧。 该网络根据冲突检测协议为与用户设备通信的节点提供冲突检测协议，但是根据非冲突类型协议与环进行通信。 网络使用在两个以上级别进行幅度调制的光。 数据帧边界由违反替代标记反转数据编码技术定义。 两帧流的相位同步通过在由两个帧分别导出的两个帧边界时钟中所选择的一个控制的时间采样帧来实现。

    Method and apparatus for performing in-service quality of service testing
    5.
    发明授权
    Method and apparatus for performing in-service quality of service testing 失效
    用于执行在职服务质量测试的方法和装置

    公开(公告)号：US6147998A

    公开(公告)日：2000-11-14

    申请号：US992755

    申请日：1997-12-17

    申请人： Paul W. Kelley ,  Stuart P. MacEachern ,  Ralph L. Beck

    发明人： Paul W. Kelley ,  Stuart P. MacEachern ,  Ralph L. Beck

    IPC分类号： H04L12/26 ,  H04L12/56 ,  H04Q11/04 ,  H04L12/28

    CPC分类号： H04L43/00 ,  H04L12/2602 ,  H04Q11/0478 ,  H04L2012/5616 ,  H04L2012/5625 ,  H04L2012/5628 ,  H04L2012/5638 ,  H04L43/106

    摘要： An apparatus and method for determining the QoS of a communication system. In one embodiment a service verification equipment device (SVE) is placed into the communications link between the wide area network and the transmitting customer premise and an SVE is placed into the communications link between the wide area network and the receiving customer premise. The transmitting SVE inserts a test cell into the customer's data stream over communications link which informs the receiving SVE that a test is commencing. After a predetermined number of customer data cells are sent, the transmitting SVE inserts a termination cell into the communications link at the end of the test. The receiving SVE then compiles data related to the QoS of the communications link and that data is analyzed to determine the QoS.

    摘要翻译： 一种用于确定通信系统的QoS的装置和方法。 在一个实施例中，服务验证设备设备（SVE）被放置在广域网和发送客户驻地之间的通信链路中，并且SVE被放置在广域网和接收客户端之间的通信链路中。 传输SVE通过通信链路将测试单元插入客户的数据流，通知接收SVE测试正在开始。 在发送预定数量的客户数据信元之后，发送SVE在测试结束时将终端单元插入到通信链路中。 接收SVE然后编译与通信链路的QoS有关的数据，并分析数据以确定QoS。