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    PERIODIC TRAINING SIGNALS
    1.
    发明申请
    PERIODIC TRAINING SIGNALS 审中-公开
    定期培训信号

    公开(公告)号：WO2005094028A1

    公开(公告)日：2005-10-06

    申请号：PCT/IL2005/000345

    申请日：2005-03-28

    Applicant: STMICROELECTRONICS LTD. ,  STOPLER, Danny

    Inventor： STOPLER, Danny

    IPC: H04L27/26

    CPC classification number: H04L27/2613 ,  H04L25/0226 ,  H04L2025/03783

    Abstract: A method for digital communication includes generating time-domain symbols (54) having a predetermined symbol duration in accordance with a discrete multi-tone (DMT) modulation scheme. A cyclic extension (56,58) is added to each of the time-domain symbols so as to form data blocks (50,52) having a block length that is not an integer multiple of the symbol duration. A training pattern is generated on one or more tones of the DMT modulation scheme, wherein the training pattern is periodic over a sequence of the data blocks with a period equal to the symbol duration. The sequence of the data blocks is transmitted over a communication channel (26) to a receiver (24), which processes the training pattern so as to determine a response of the channel to the one or more tones.

    Abstract translation: 一种用于数字通信的方法包括根据离散多音调（DMT）调制方案产生具有预定符号持续时间的时域符号（54）。 将周期扩展（56,58）添加到每个时域符号，以形成具有不是符号持续时间的整数倍的块长度的数据块（50,52）。 在DMT调制方案的一个或多个音调上产生训练模式，其中训练模式是周期性的数据块的序列周期等于符号持续时间。 数据块的序列通过通信信道（26）发送到接收机（24），接收机处理训练模式，以便确定信道对一个或多个音调的响应。

    FRAMING STRUCTURE ALLOWING FLEXIBLE ALLOCATION OF OVERHEAD CHANNEL
    2.
    发明申请
    FRAMING STRUCTURE ALLOWING FLEXIBLE ALLOCATION OF OVERHEAD CHANNEL 审中-公开
    框架结构允许超音频通道的灵活分配

    公开(公告)号：WO2005094030A1

    公开(公告)日：2005-10-06

    申请号：PCT/IL2005/000347

    申请日：2005-03-28

    Applicant: STMICROELECTRONICS LTD. ,  REINA, Guy

    Inventor： REINA, Guy

    IPC: H04L27/26

    CPC classification number: H04L5/1438 ,  H04L5/0042 ,  H04L5/0044 ,  H04L5/0053 ,  H04L27/2602

    Abstract: Digital data is transmitted in a block-based hyperframe that consists of N frames. Each frame carries multiplexed data from one or more user data channels and a control channel. Control channel information is unequally allocated among the N frames, the amount of information carried in each frame varying according to the frame's position in the hyperframe. All of the user data channels except one carry a predetermined number of transmission units in each frame. The excepted user data channel carries a calculated amount needed to round out the particular frame. Following multiplexing, a block encoder defines the frames and adds error detection or error correction information. The number of frames per hyperframe and the total number of transmission units for the control channel are available to a receiver, which can then demultiplex the hyperframe.

    Abstract translation: 数字数据以由N个帧组成的基于块的超帧传输。 每个帧承载来自一个或多个用户数据信道和控制信道的复用数据。 控制信道信息在N帧之间不均等地分配，每帧中承载的信息量根据帧在超帧中的位置而变化。 除了一个以外的所有用户数据信道在每帧中携带预定数量的传输单元。 例外的用户数据信道携带计算出的数量来整理特定的帧。 在多路复用之后，块编码器定义帧并添加错误检测或纠错信息。 每个超帧的帧数和用于控制信道的传输单元的总数量对接收机是可用的，接收机可以对超帧进行解复用。

    SIGNALING SCHEME FOR MODE TRANSITION IN DMT MODEMS
    3.
    发明申请
    SIGNALING SCHEME FOR MODE TRANSITION IN DMT MODEMS 审中-公开
    DMT模式下模式转换的信令方案

    公开(公告)号：WO2005122514A1

    公开(公告)日：2005-12-22

    申请号：PCT/IL2005/000609

    申请日：2005-06-08

    Applicant: STMICROELECTRONICS LTD. ,  REINA, Guy

    Inventor： REINA, Guy

    IPC: H04L27/26

    CPC classification number: H04L5/0091 ,  H04L1/0025 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/0048

    Abstract: A method for coordinating and synchronizing a mode transition in a Discrete Multi-Tone (DMT) communication system (20) operating over a range of tones. The method includes allocating a set of one or more of the tones in the range to serve as monitor tones (67) for signaling the mode transition. The mode transition is signaled by transmitting a known transition sequence (68) on the monitor tones over two or more successive symbol intervals while simultaneously transmitting data on at least some of the tones in the range other than the monitor tones.

    Abstract translation: 一种用于协调和同步在一系列音调上操作的离散多音（DMT）通信系统（20）中的模式转换的方法。 所述方法包括将所述范围中的一个或多个音调的一组分配用作用于发信号通知模式转换的监听音（67）。 通过在两个或更多个连续的符号间隔上的监视音上发送已知的转换序列（68）来发送模式转换，同时在监视音调以外的范围中的至少一些音调上发送数据。

    POWER SAVE MODE TRANSITION IN DIGITAL SUBSCRIBER LINES
    4.
    发明申请
    POWER SAVE MODE TRANSITION IN DIGITAL SUBSCRIBER LINES 审中-公开
    省电模式转换在数字订户行

    公开(公告)号：WO2005094029A1

    公开(公告)日：2005-10-06

    申请号：PCT/IL2005/000346

    申请日：2005-03-28

    Applicant: STMICROELECTRONICS LTD. ,  STOPLER, Danny

    Inventor： STOPLER, Danny

    IPC: H04L27/26

    CPC classification number: H04L27/2608

    Abstract: Methods and systems provide an efficient power save mode for multi carrier modems, such as DMT based ADSL and VDSL modems. Fast transitions from power save mode to full operational mode occur, without the overhead of transmitting large quantities of configuration information between the transmitter and receiver. Signal constellation size changes occurring while operating in power save mode to continue to apply once full operational mode is resumed. Multiple power save modes are enabled, each having a different level of power dissipation and crosstalk, both far end crosstalk and near end crosstalk. Power dissipation and crosstalk can thus be graduated on a line, according to a user-requested bit rate.

    Abstract translation: 方法和系统为多载波调制解调器提供了有效的省电模式，例如基于DMT的ADSL和VDSL调制解调器。 发生从省电模式到完全运行模式的快速转换，无需在发送器和接收器之间传输大量配置信息的开销。 在节电模式下操作时发生信号星座大小变化，一旦恢复完全运行模式，继续施加。 启用多种省电模式，每种模式具有不同的功耗水平和串扰，远端串扰和近端串扰。 因此，根据用户请求的比特率，功率耗散和串扰因此可以在线上分级。

    EFFICIENT TONE ORDERING FOR MULTITONE TRANSMISSION
    5.
    发明申请
    EFFICIENT TONE ORDERING FOR MULTITONE TRANSMISSION 审中-公开
    用于多媒体传输的高效音调

    公开(公告)号：WO2005094027A1

    公开(公告)日：2005-10-06

    申请号：PCT/IL2005/000344

    申请日：2005-03-28

    Applicant: STMICROELECTRONICS LTD. ,  REINA, Guy

    Inventor： REINA, Guy

    IPC: H04L27/26

    CPC classification number: H04L27/2608

    Abstract: A method for data communication includes providing an order for assigning bits of an input data stream to tones in a multi-tone modulation scheme, and allocating respective bit-loading values to the tones, such that some of the tones are allocated a first bit-loading value and other tones are allocated at least one second bit-loading value. The order is modified so as to form pairs (59) of the tones that are allocated the first bit-loading value, with one or more of the other tones intervening between at least some of the pairs. The input data stream is modulated by assigning the bits to the tones in accordance with the modified order and the respective bit-loading values, and encoding the bits that are assigned to each of the pairs of the tones as a constellation point.

    Abstract translation: 一种用于数据通信的方法包括：提供用于将输入数据流的位分配给多音调制方案中的音调的顺序，以及将各个位加载值分配给音调，使得一些音调被分配第一位 - 负载值和其他音调被分配至少一个第二位负载值。 顺序被修改以便形成分配有第一位加载值的音调对（59），其中一个或多个其它音调介于至少一些对之间。 通过根据修改的顺序和相应的位加载值将比特分配给音调，并且将分配给每对音调的比特的编码作为星座点进行编码来调制输入数据流。

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