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    • 23. 发明授权
    • Method and apparatus for optimization of channel capacity in multi-line communication systems using spectrum management techniques
    • 使用频谱管理技术优化多线通信系统中信道容量的方法和装置
    • US07356049B1
    • 2008-04-08
    • US10334623
    • 2002-12-30
    • Behrooz Rezvani
    • Behrooz Rezvani
    • H04J1/00H04L5/16
    • H04L27/2608H04L1/0003
    • The present invention advantageously provides a method and apparatus for optimization of channel capacity in multi-line multi-tone communications such as X-DSL among subscriber lines which are bundled with one another. In an embodiment of the invention an apparatus for optimizing channel capacity of multi-tone communications effected by opposing sets of modems coupled to one another by a plurality of subscriber lines is disclosed. The apparatus includes a spectrum manager coupled to at least one of the opposing sets of modems. The spectrum manager includes: a profiler, a demand module and an optimizer. The profiler obtains from the at least one of the opposing sets of modems the spectral characteristics of each of the plurality of subscriber lines. The demand module determines for each of the plurality of subscriber lines the subscriber demand profile. The optimizer defines target parameters for at least one of bit loading, and power spectral density (PSD) for selected tones of the multi-tone communications based on the spectral characteristics from the profile module and the demand profiles from the demand module and downloads the target parameters to the at least one of the opposing sets of modems.
    • 本发明有利地提供了一种用于在彼此捆绑的用户线路中的诸如X-DSL的多线多音通信中的信道容量优化的方法和装置。 在本发明的一个实施例中,公开了一种用于优化由多个用户线路彼此耦合的相对的调制解调器集所影响的多音调通信的信道容量的装置。 该装置包括耦合到相对的一组调制解调器中的至少一个的频谱管理器。 频谱管理器包括:分析器,需求模块和优化器。 分析器从至少一个相对的调制解调器获得多个用户线中的每一个的频谱特性。 需求模块为多个用户线路中的每一个确定用户需求简档。 优化器基于来自简档模块的频谱特性和来自需求模块的需求简档来定义用于多音通信的所选音调的位加载和功率谱密度(PSD)中的至少一个的目标参数,并且下载目标 参数到至少一个相对的调制解调器组中。
    • 24. 发明授权
    • Method and apparatus for long haul high speed data transmission over XDSL pseudo channels
    • 通过XDSL伪通道进行长途高速数据传输的方法和装置
    • US07092412B1
    • 2006-08-15
    • US09859182
    • 2001-05-14
    • Behrooz RezvaniRouben ToumaniSushil Agrawal
    • Behrooz RezvaniRouben ToumaniSushil Agrawal
    • H04J3/04H04L12/66G01R31/08
    • H04L27/2608H04M11/062
    • A method and apparatus for extending existing fiber and local area networks across digital subscriber lines, at matching data rates is disclosed. A DSL transceiver system is disclosed with one or more gateways coupled to at least one digital signal processor (DSP). The DSP in turn couples to a plurality of analog-front-ends (AFE's). Each AFE is coupled via associated hybrid front ends (HFE's) to corresponding subscriber lines. The transceiver or a controller coupled thereto maintains a table of bandwidth requirements and frame types for a variety of sessions. Individual sessions include bandwidth requirements beyond existing XDSL capabilities. The system determines frametype, e.g. 802 and bandwidth requirements, e.g. 100 Mbps for each session and allocates more than one subscriber line accordingly. For each session the divergent bandwidth availability of each of the subscriber lines to which the DSP may be coupled is determined and all or a portion of that bandwidth is allocated to the selected session. Provisioning continues until the allocated bandwidth on each subscriber line equals the session requirements. Next, a pseudo channel identifier is allocated to each physical channel. This along with a session number which is assigned to each pseudo channel allows packet based demultiplexing of a single session across a plurality of subscriber lines. A sequence for processing of pseudo channels is then assigned to all the pseudo channels within each session. This information is then communicated to the remote end and a corresponding provisioning takes place.
    • 公开了一种用于以匹配的数据速率在数字用户线路之间扩展现有光纤和局域网的方法和装置。 公开了DSL收发器系统,其中一个或多个网关耦合到至少一个数字信号处理器(DSP)。 DSP又耦合到多个模拟前端(AFE)。 每个AFE通过相关联的混合前端(HFE)耦合到相应的用户线路。 收发器或与其耦合的控制器维护各种会话的带宽需求表和帧类型。 个别会话包括超出现有XDSL功能的带宽要求。 系统确定frametype,例如 802和带宽要求,例如 每个会话100 Mbps,并相应地分配多个用户线。 对于每个会话,确定可以耦合DSP的每个用户线路的不同带​​宽可用性,并将该带宽的全部或一部分分配给所选择的会话。 配置将持续到每个用户线上的分配带宽等于会话要求。 接下来,将伪信道标识符分配给每个物理信道。 这与分配给每个伪信道的会话号码一起允许跨多个用户线路进行基于分组的单个会话的解复用。 然后将用于处理伪信道的序列分配给每个会话内的所有伪信道。 然后将该信息传送到远程端并进行相应的配置。