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    • 32. 发明公开
    • DATA COMMUNICATION
    • DATENKOMMUNIKATION
    • EP3127315A1
    • 2017-02-08
    • EP15714269.6
    • 2015-03-30
    • British Telecommunications Public Limited Company
    • HORSLEY, Ian EdwinLINNEY, Trevor Philip
    • H04M11/06H04L1/00
    • H04M11/062H04L5/0007H04L43/08H04L47/38H04L2012/6478Y02D50/44
    • A method of controlling a digital subscriber line (DSL) transceiver for use in transferring data over a DSL connection, the method comprising: monitoring operation of the DSL connection; detecting that the DSL connection is operating in a low power mode in which the signal power applied to the DSL connection by the DSL transceiver is at a first level below a power threshold value; increasing the signal power applied to the DSL connection to a second level above the power threshold value; recording data indicative of performance of the DSL connection with signal power applied to the DSL connection at the second level; and modifying DSL transceiver attributes based on the recorded data indicative of performance, to change operation of the DSL transceiver in transferring data over the DSL connection.
    • 一种控制用于通过DSL连接传输数据的数字用户线(DSL)收发器的方法,所述方法包括:监视DSL连接的操作; 检测DSL连接在低功率模式下工作,其中由DSL收发器施加到DSL连接的信号功率处于低于功率阈值的第一级; 将施加到DSL连接的信号功率增加到高于功率阈值的第二电平; 记录指示DSL连接的性能的数据,其中信号功率是施加到第二级的DSL连接; 以及基于表示性能的记录数据修改DSL收发器属性,以改变DSL收发器在DSL连接上传输数据时的操作。
    • 33. 发明公开
    • METHODS AND APPARATUS FOR OPERATING AN ACCESS NETWORK
    • VERFAHREN UND VORRICHTUNG ZUM BETRIEB EINES ZUGANGSNETZES
    • EP3097660A1
    • 2016-11-30
    • EP15701241.0
    • 2015-01-14
    • British Telecommunications Public Limited Company
    • HORSLEY, Ian Edwin
    • H04L12/24H04M3/30H04M11/06
    • H04L43/067H04L12/2863H04L41/24H04L43/0888H04L43/14H04L43/16H04L43/50H04L67/22H04M3/2227H04M3/304H04M11/062H04M2201/18H04Q9/00H04Q2209/823Y02D50/30Y02D50/44
    • Methods and apparatus are disclosed for operating an access network including data connections (19) between end-user devices (12, 14, 16, 18) and an aggregation transceiver (20) at which connections (19) are aggregated for onward connection through the network. The method comprises, for each connection, obtaining connection data for each of a plurality of monitoring periods, each comprising shorter periods, the connection data comprising performance and user activity indications for each shorter period; monitoring the performance of the connection in order to estimate a measure of its performance during a particular monitoring period that discounts performance indications obtained in respect of shorter periods within that monitoring period when the user was inactive unless activity indications in respect of corresponding shorter periods within other monitoring periods indicate that such user inactivity is anomalous; and applying a profile to the connection that is dependent on the measure of performance of the data connection.
    • 公开了用于操作包括终端用户设备(12,14,16,18)之间的数据连接(19)和聚合收发器(20)的接入网络的方法和装置,在该收发器(20)处汇聚了连接(19),用于通过 网络。 该方法包括针对每个连接,为多个监视周期中的每一个获得连接数据,每个监视周期包括较短的周期,连接数据包括每个较短周期的性能和用户活动指示; 监视连接的性能,以便在特定监控期间估计其性能的度量,以便在用户不活动的情况下,在该监控期间内针对较短期间获得的性能指示进行折扣,除非在其他方面相应的较短时期内的活动指示 监控期间表示此类用户不活动是异常的; 以及将配置文件应用于依赖于数据连接性能测量的连接。
    • 34. 发明公开
    • METHOD AND APPARATUS FOR MANAGING LOW POWER MODE IN XDSL SYSTEMS
    • VERFAHREN UND VORRICHTUNG ZUR VERWALTUNG EINES NIEDERSTROMMODUS IN XDSL-SYSTEMEN
    • EP3066787A1
    • 2016-09-14
    • EP14856966.8
    • 2014-10-31
    • Ikanos Communications, Inc.
    • SHRIDHAR, AvadhaniSORBARA, Massimo
    • H04L12/24
    • H04M11/062H04B3/32H04L5/0055H04L5/1438Y02D50/44
    • According to certain aspects, the present invention provides methods and apparatuses for managing a low power mode in xDSL systems, and more particularly directed to a L2 mode exit procedure for VDSL systems that is robust and quick. In embodiments, parameters for exiting a low power mode are communicated between upstream and downstream modems before the low power mode is entered. According to certain aspects, these parameters include configurations for incrementally exiting low power mode in a plurality of stages. Embodiments of the invention include quickly estimating SNR at one or more stages of this plurality of stages. Additional or alternative embodiments include reliably signaling the beginning of low power mode exit. According to certain aspects, such signaling can include a synchro sequence of inverted and normal sync symbols.
    • 根据某些方面,本发明提供了用于管理xDSL系统中的低功率模式的方法和装置,更具体地涉及用于稳健且快速的VDSL系统的L2模式退出程序。 在实施例中,在输入低功率模式之前,用于退出低功率模式的参数在上游和下游调制解调器之间通信。 根据某些方面,这些参数包括在多个阶段逐渐退出低功率模式的配置。 本发明的实施例包括在该多个级的一个或多个阶段快速估计SNR。 附加或替代实施例包括可靠地发信号通知低功率模式退出的开始。 根据某些方面,这种信令可以包括反向和正常同步符号的同步序列。
    • 36. 发明授权
    • ALIEN INTERFERENCE REMOVAL IN VECTORED DSL
    • 向量DSL中的外部干扰消除
    • EP2356790B1
    • 2015-06-24
    • EP09807115.2
    • 2009-08-08
    • Ikanos Communications, Inc.
    • SANDS, Nicholas, P.FISHER, Kevin, D.
    • H04M11/06H04B3/32H04B3/46
    • H04B3/32H04B3/487H04M11/062Y02D50/44
    • A vectored DSL system reduces or eliminates correlated alien interference in active DSL lines in the vectored system by collecting pseudo signals from inactive lines that do not carry upstream DSL transmissions and/or from common-mode voltage signals from active lines. The collected pseudo signals contain in-domain interference, such as FEXT interference from the active DSL lines in the vectored system, and correlated alien interference. After removing the in-domain interference from the pseudo signals, the remaining alien interference data can be used to generate FEXT cancellation coefficients or the like that are used in DSL vectoring to remove the correlated alien interference from upstream DSL user signals from the active DSL lines. The generated FEXT cancellation coefficients are used in a manner analogous to in-domain FEXT data collected from the active lines during training, tracking, etc. The vectored DSL system can include modems coupled to a private vectoring data routing apparatus to one or more vectoring modules The vectoring modules can employ vector processors that include processing units configured to process collected user data on the basis of all modems' data for a given DSL tone grouping, thus removing FEXT effects from the user data and returning vectored user data to the modems using the routing apparatus, which can be a specialized data transmission network utilizing one or more vector routers.
    • 37. 发明授权
    • ALIEN INTERFERENCE REMOVAL IN VECTORED DSL
    • 外国干涉在VEKTORIESIERTEN DSL拆除
    • EP2356790B8
    • 2015-05-06
    • EP09807115.2
    • 2009-08-08
    • Ikanos Communications, Inc.
    • SANDS, Nicholas, P.FISHER, Kevin, D.
    • H04M11/06H04B3/32H04B3/46
    • H04B3/32H04B3/487H04M11/062Y02D50/44
    • A vectored DSL system reduces or eliminates correlated alien interference in active DSL lines in the vectored system by collecting pseudo signals from inactive lines that do not carry upstream DSL transmissions and/or from common-mode voltage signals from active lines. The collected pseudo signals contain in-domain interference, such as FEXT interference from the active DSL lines in the vectored system, and correlated alien interference. After removing the in-domain interference from the pseudo signals, the remaining alien interference data can be used to generate FEXT cancellation coefficients or the like that are used in DSL vectoring to remove the correlated alien interference from upstream DSL user signals from the active DSL lines. The generated FEXT cancellation coefficients are used in a manner analogous to in-domain FEXT data collected from the active lines during training, tracking, etc. The vectored DSL system can include modems coupled to a private vectoring data routing apparatus to one or more vectoring modules The vectoring modules can employ vector processors that include processing units configured to process collected user data on the basis of all modems' data for a given DSL tone grouping, thus removing FEXT effects from the user data and returning vectored user data to the modems using the routing apparatus, which can be a specialized data transmission network utilizing one or more vector routers.