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    Transmission system with flexible frame structure
    1.
    发明授权
    Transmission system with flexible frame structure 失效
    传动系统具有灵活的框架结构

    公开(公告)号：US06414967B2

    公开(公告)日：2002-07-02

    申请号：US08951037

    申请日：1997-10-15

    申请人： Petrus A. M. Van Grinsven ,  Carel J. L. Van Driel

    发明人： Petrus A. M. Van Grinsven ,  Carel J. L. Van Driel

    IPC分类号： H04J316

    CPC分类号： H04N21/2381 ,  H04J3/1682 ,  H04L2012/5638 ,  H04L2012/565 ,  H04L2012/5652 ,  H04N21/4381 ,  H04N21/64307 ,  H04Q11/0478

    摘要： In a transmission system, a transmitter has a frame assembler which frames with a header and a payload portion. The header (22-1) comprises a validity indicator (SSSSS) to indicate the validity of a sequence of ATM cells in the frame. By using values of the validity indicator (SSSSS) different from the value of the validity indicator for valid ATM cells, it becomes possible to transport data in a format different from a sequence of ATM cells.

    摘要翻译： 在传输系统中，发射机具有与报头和有效载荷部分成帧的帧汇编器。 报头（22-1）包括用于指示帧中的ATM信元序列的有效性的有效性指示符（SSSSS）。 通过使用与有效ATM信元的有效性指示符的值不同的有效性指示符（SSSSS）的值，可以传输与ATM信元序列不同的格式的数据。

    Telecommunication network with improved access protocol
    2.
    发明授权
    Telecommunication network with improved access protocol 失效
    电信网络具有改进的接入协议

    公开(公告)号：US06320869B1

    公开(公告)日：2001-11-20

    申请号：US08634596

    申请日：1996-04-24

    申请人： Carel J. L. Van Driel ,  Petrus A. M. Van Grinsven

    发明人： Carel J. L. Van Driel ,  Petrus A. M. Van Grinsven

    IPC分类号： H04J314

    CPC分类号： H04N7/17309 ,  H04L2012/561 ,  H04L2012/5616 ,  H04L2012/563 ,  H04L2012/5652 ,  H04L2012/5672 ,  H04L2012/5679 ,  H04Q11/0478

    摘要： A telecommunication network including a plurality of secondary stations and a primary station wherein the secondary stations a least partially share a common transmission channel to the primary station, thus obtaining high data transmission efficiency under high load conditions. To prevent interference, an access protocol is employed according to which all secondary stations which have data to transmit send transmission request signals to the primary station. The primary station then transmits to those secondary stations an allocation signal assigning respective time slots to them. The secondary stations then transmit in their assigned time slots. Directly upon completion of transmission in its assigned time slot a secondary station transmits a further transmission request signal to the primary station it such secondary station still has further data to transmit.

    摘要翻译： 包括多个次站和主站的电信网络，其中次站至少部分地共享到主站的公共传输信道，从而在高负载条件下获得高数据传输效率。 为了防止干扰，采用访问协议，根据该接入协议，具有要发送的数据的所有次站向主站发送传输请求信号。 然后，主站向这些次站发送向它们分配各个时隙的分配信号。 次站然后在其分配的时隙中发送。 在其分配的时隙中完成传输之后，次站向主站发送另外的传输请求信号，这样的次站仍具有进一步的数据要传输。

    TDM data communications network wherein each data frame is divided into respective lower rate sub-frames for respective sets of substations, and main station and substation for use therein
    6.
    发明授权
    TDM data communications network wherein each data frame is divided into respective lower rate sub-frames for respective sets of substations, and main station and substation for use therein 失效
    TDM数据通信网络，其中每个数据帧被分成用于各组变电站的相应的较低速率子帧，以及用于其中的主站和变电站

    公开(公告)号：US5509003A

    公开(公告)日：1996-04-16

    申请号：US273529

    申请日：1994-07-11

    申请人： Wilfred A. M. Snijders ,  Petrus A. M. Van Grinsven

    发明人： Wilfred A. M. Snijders ,  Petrus A. M. Van Grinsven

    IPC分类号： H04B10/20 ,  H04J3/16 ,  H04B7/212 ,  H04L5/22

    CPC分类号： H04J3/1694

    摘要： Telecommunications passive optical networks are known which employ a TDMA frame structure for transmission between a main station and a number of substations. Due to increased capacity demands and still further service demands, there is a need for higher bit rates over such networks. The invention provides a high bit rate passive optical network wherein the substations operate at only a fraction of the network bit rate, and so are hardly more complex than in lower bit rate networks. That is achieved by formation by the main station of sub-frames of the data intended for transmission to a number of the substations, and bit interleaving the sub-frames to form a data frame which is transmitted over the optical fiber cable. Each substation is adjusted to only listen to the sub-frame to which it is assigned. In one embodiment the substations are automatically adjusted to only listen to a particular phase in the interleaved bit stream, which is identified by phase adjustment data transmitted by the main station in a housekeeping time slot of the data frame.

    摘要翻译： 电信无源光网络是已知的，其采用TDMA帧结构用于主站和多个变电站之间的传输。 由于容量需求的增加和更多的服务需求，需要在这样的网络上具有更高的比特率。 本发明提供了一种高比特率无源光网络，其中，分站仅以网络比特率的一小部分进行操作，并且因此比在较低比特率网络中难以复杂。 这是通过主站将用于传输到多个变电站的数据的子帧形成，并且对子帧进行位交织以形成通过光纤电缆传输的数据帧。 每个变电站被调整为仅监听其被分配到的子帧。 在一个实施例中，变电站被自动调整为仅监听交错比特流中的特定相位，其由主站在数据帧的管理时隙中发送的相位调整数据识别。

    Telecommunication system and a main station for use in such a system
    7.
    发明授权
    Telecommunication system and a main station for use in such a system 失效
    电信系统和用于这种系统的主站

    公开(公告)号：US5619504A

    公开(公告)日：1997-04-08

    申请号：US213483

    申请日：1994-03-14

    申请人： Petrus A. M. Van Grinsven ,  Wilfred A. M. Snijders

    发明人： Petrus A. M. Van Grinsven ,  Wilfred A. M. Snijders

    IPC分类号： H04J3/00 ,  H04J3/06 ,  H04L7/08 ,  H04L12/28 ,  H04L12/403 ,  H04L12/56 ,  H04Q11/04 ,  H04J3/10

    CPC分类号： H04J3/0682 ,  H04Q11/0478 ,  H04J2203/0032 ,  H04L2012/561 ,  H04L2012/5674

    摘要： Telecommunication systems such as PON-FITL-Systems are known having a TDMA frame structure and comprising a main station and a number of substations. The known systems can comprise apparatus for coarse ranging and for fine ranging. A Pseudo Noise Sequence based coarse ranging technique employs coarse ranging at a fixed position within the upstream multiframe reserved for ranging, preferably for fine ranging. By applying a low power Pseudo Noise Sequence for coarse ranging and sampling the range in the main station only within a fine ranging window the position of which is known to the main station, a more accurate coarse ranging is achieved. Within the fine ranging window normally no data are present, and thus the signal-to-interference ratio is an order of magnitude better than in the other part of the frame.

    摘要翻译： 具有TDMA帧结构的PON-FITL-Systems等通信系统是已知的，并且包括主站和多个变电站。 已知的系统可以包括用于粗范围和精细测距的装置。 基于粗噪声序列的粗测距技术在保留用于测距的上游复帧内的固定位置使用粗距离，优选地用于精细测距。 通过应用低功率伪噪声序列来粗略测距和采样主站中的范围，仅在主站已知位置的精细测距窗口内，实现更准确的粗程度。 在精细测距窗内通常没有数据存在，因此信号干扰比比帧的其他部分好一个数量级。