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    MULTI-POINT TO POINT COMMUNICATION SYSTEM
    1.
    发明申请
    MULTI-POINT TO POINT COMMUNICATION SYSTEM 审中-公开
    多点通信系统

    公开(公告)号：WO9624989A2

    公开(公告)日：1996-08-15

    申请号：PCT/US9601575

    申请日：1996-02-06

    Applicant: ADC TELECOMMUNICATIONS INC

    Inventor： DAPPER MARK J ,  GEILE MICHAEL J ,  HILL TERRANCE J ,  ROBERTS HAROLD A ,  ANDERSON BRIAN D ,  BREDE JEFFREY ,  WADMAN MARK S ,  KIRSCHT ROBERT J ,  HERRMANN JAMES J ,  FORT MICHAEL J ,  BUSKA STEVEN P

    IPC: H04B10/272 ,  H04J3/14 ,  H04J11/00 ,  H04J14/02 ,  H04L1/00 ,  H04L1/24 ,  H04L5/02 ,  H04L5/06 ,  H04L25/03 ,  H04L27/00 ,  H04L27/26 ,  H04M3/00 ,  H04N7/173 ,  H04B10/207 ,  H04J14/00

    CPC classification number: H04L1/0057 ,  H04B10/272 ,  H04J3/14 ,  H04J14/0298 ,  H04L1/0061 ,  H04L1/203 ,  H04L1/24 ,  H04L5/023 ,  H04L25/03866 ,  H04L27/2614 ,  H04L27/2626 ,  H04L27/2647 ,  H04L27/2652 ,  H04L27/2657 ,  H04L27/2665 ,  H04L2001/0096 ,  H04L2027/0036 ,  H04L2027/0057 ,  H04L2027/0067 ,  H04N7/17309 ,  H04N21/6118 ,  H04N21/6168

    Abstract: The communication system includes a hybrid fiber/coax distribution network. A head end provides for downstream transmission of telephony and control data in a first frequency bandwidth over the hybrid fiber/coax distribution network and reception of upstream telephony and control data in a second frequency bandwidth over the hybrid fiber/coax distribution network. The head end includes a head end multicarrier modem for modulating at least downstream telephony information on a plurality of orthogonal carriers in the first frequency bandwidth and demodulating at least upstream telephony information modulated on a plurality of orthogonal carriers in the second frequency bandwidth. The head end further includes a controller operatively connected to the head end multicarrier modem for controlling transmission of the downstream telephony information and downstream control data and for controlling receipt of the upstream control data and upstream telephony information. The system further includes service units, each service unit operatively connected to the hybrid fiber/coax distribution network for upstream transmission of telephony and control data in the second frequency bandwidth and for receipt of the downstream control data and telephony in the first frequency bandwidth. Each service unit includes a service unit multicarrier modem for modulating at least the upstream telephony information on at least one carrier orthogonal at the head end terminal to another carrier in the second frequency bandwidth and for demodulating at least downstream telephony information modulated on at least a band of a plurality of orthogonal carriers in the first frequency bandwidth. Each service unit also includes a controller operatively connected to the service unit multicarrier modem for controlling the modulation of and demodulation performed by the service unit multicarrier modem. A method of monitoring communication channels, a distributed loop method for adjusting transmission characteristics to allow for transmission of data in a multi-point to point communication system, a polyphase filter technique for providing ingress protection and a scanning method for identifying frequency bands to be used for transmission by service units are also included.

    Abstract translation: 通信系统包括混合光纤/同轴电缆分配网络。 头端提供在混合光纤/同轴电缆分配网络上的第一频带中的电话和控制数据的下行传输，以及在混合光纤/同轴电缆分配网络上以第二频带宽度接收上行电话和控制数据。 头端包括头端多载波调制解调器，用于至少在第一频带中的多个正交载波上调制下游电话信息，并且解调至少在第二频带中的多个正交载波上调制的上行电话信息。 前端还包括可操作地连接到头端多载波调制解调器的控制器，用于控制下游电话信息和下游控制数据的传输，并用于控制上游控制数据和上游电话信息的接收。 该系统还包括服务单元，每个服务单元可操作地连接到混合光纤/同轴电缆分配网络，用于电话的上行传输和第二频率带宽中的控制数据，以及用于在第一频率带宽中接收下游控制数据和电话。 每个服务单元包括服务单元多载波调制解调器，用于至少将在头端终端处正交的至少一个载波的第二频带中的上行电话信息调制到第二频带中的另一个载波，并且至少解调在至少一个频带上调制的下游电话信息 的第一频率带宽中的多个正交载波。 每个服务单元还包括可操作地连接到服务单元多载波调制解调器的控制器，用于控制由服务单元多载波调制解调器执行的调制和解调。 监控通信信道的方法，用于调整传输特性以允许多点到点通信系统中的数据传输的分布式环路方法，用于提供入口保护的多相滤波器技术和用于识别要使用的频带的扫描方法 也包括服务单位的传输。

    ADDED BIT SIGNALLING IN A TELECOMMUNICATIONS SYSTEM
    2.
    发明申请
    ADDED BIT SIGNALLING IN A TELECOMMUNICATIONS SYSTEM 审中-公开
    在电信系统中增加的信号

    公开(公告)号：WO9429978A8

    公开(公告)日：2001-06-07

    申请号：PCT/US9405185

    申请日：1994-05-10

    Applicant: ADC TELECOMMUNICATIONS INC

    Inventor： WADMAN MARK S ,  OPOCZYNSKI ADAM ,  ELPERS MARK D

    IPC: H04J3/06 ,  H04J3/12 ,  H04J3/14 ,  H04J3/16 ,  H04L7/08 ,  H04J3/07

    CPC classification number: H04J3/14 ,  H04J3/0605 ,  H04J3/12 ,  H04J3/1635

    Abstract: A telecommunication system includes an added bit signalling method and apparatus for conveying signalling information between a head end (300) and multiple remote ends (600) connected over a passive distribution network. In accordance with the present invention, an added bit (NB) having an identifiable data sequence patterned thereon is appended to each channel within a succession of frames. The present invention, therefore, appends an added-bit sequence to each channel such that each channel sample carries its own multiframe and alignment information. The remote ends monitor the added bits to locate multiframing and alignment information and to identify individual time slots within each frame. The added bit can be further utilized for out-of-band signalling or to provide an additional data link.

    Abstract translation: 电信系统包括用于在头端（300）和在被动分配网络上连接的多个远端（600）之间传送信令信息的附加比特信令方法和装置。 根据本发明，其中具有图案化的可识别数据序列的附加位（NB）在一系列帧内附加到每个通道。 因此，本发明将附加比特序列附加到每个信道，使得每个信道样本携带其自己的多帧和对准​​信息。 远程监视添加的位以定位多重和对齐信息，并识别每个帧内的各个时隙。 添加的比特可以进一步用于带外信令或提供附加的数据链路。

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