公开(公告)号：WO2013029671A1

公开(公告)日：2013-03-07

申请号：PCT/EP2011/064989

申请日：2011-08-31

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (publ) ,  LU, Chenguang ,  ERIKSSON, Per-Erik

Inventor： LU, Chenguang ,  ERIKSSON, Per-Erik

IPC: H04B3/32 ,  H04B3/46 ,  H04M11/06

CPC classification number: H04B3/32 ,  H04B3/487 ,  H04L5/00 ,  H04M11/062

Abstract: A device (10) for limiting crosstalk between vectoring modems connected to a group of communication lines (18, 20, 22, 24, 26, 28, 30, 32) comprises a subgroup determining element (60) that obtains information of the division into subgroups, each subgroup being made up of lines experiencing cross-talk from each other, and assigns operational pilot sequences to the group according to the division, an operational sequence transmission control element (58) that transmits the operational sequences on the lines to the modems, which sequences are mutually orthogonal to each other and each communication line receives a corresponding sequence, and a corrective action determining element (62) that obtains cross-talk measurements related to the transmitted operational pilot sequences and determines, for each subgroup, cross-talk and corrective action based on measurements made for a number of sequence symbols, which number corresponds to the minimum number required for obtaining mutually orthogonal pilot sequences within the subgroup.

Abstract translation: 用于限制连接到一组通信线路（18,20,22,24,26,38,32,32）的向量化调制解调器之间的串扰的设备（10）包括：子组确定元件（60），其获得所述分割信息 子组，每个子组由经历串扰的线路组成，并且根据划分将操作导频序列分配给该组;操作序列传输控制元件（58），用于将线路上的操作序列发送到调制解调器 ，这些序列彼此相互正交，并且每个通信线路接收相应的序列，以及校正动作确定元件（62），其获得与所发送的操作导频序列相关的串扰测量，并且针对每个子组确定串扰 以及基于对多个序列符号进行的测量的校正动作，该数量对应于获得相互正交所需的最小数目 子组内的nal导频序列。

公开(公告)号：WO2013015728A1

公开(公告)日：2013-01-31

申请号：PCT/SE2011/050967

申请日：2011-07-25

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ,  ERIKSSON, Per-Erik ,  LU, Chenguang

Inventor： ERIKSSON, Per-Erik ,  LU, Chenguang

IPC: H04B3/32

CPC classification number: H04B3/32 ,  H04L27/2601 ,  H04L27/2618 ,  H04W52/02

Abstract: In a vectoring-capable DSL system, power can be saved by a low power mode wherein data transmission is reduced or halted, but synch symbols continue to be transmitted, so that estimation of crosstalk coefficients may continue during the low power mode. When crosstalk coefficient estimates are up to date, a line may exit low power mode without causing problematic changes of crosstalk noise in other lines, since the vectoring functionality will eliminate or reduce the crosstalk.

Abstract translation: 在具有向导能力的DSL系统中，可以通过降低或停止数据传输但是同步符号继续发送的低功率模式来节省功率，从而在低功率模式期间串扰系数的估计可以继续。 当串扰系数估计是最新的时候，一条线路可以退出低功率模式，而不会导致其他线路中串扰噪声的有问题的改变，因为矢量化功能将消除或减少串扰。

公开(公告)号：WO2016023589A1

公开(公告)日：2016-02-18

申请号：PCT/EP2014/067428

申请日：2014-08-14

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： RUFFINI, Stefano ,  GHEBRETENSAÉ, Zere ,  ERIKSSON, Per-Erik ,  PAPPA, Ioanna

IPC: H04J3/00 ,  H04W56/00

CPC classification number: H04W56/001 ,  H04J3/0667 ,  H04L12/2801

Abstract: A method (100, 200) in a synchronisation control unit is disclosed. The method enables synchronisation of a plurality of distributed devices with a network and comprises the steps of receiving a wireless synchronisation signal from a network node over a wireless channel (104, 204) and processing the received synchronisation signal (108, 208). The method further comprises transmitting the processed synchronisation signal to the plurality of distributed devices over a local connection which is different to the wireless channel over which the wireless synchronisation channel is received (120, 220). Also disclosed are a synchronisation control unit (300, 400) and a computer program product.

Abstract translation: 公开了一种同步控制单元中的方法（100,200）。 该方法使多个分布式设备与网络同步，并且包括以下步骤：通过无线信道（104,204）从网络节点接收无线同步信号，并处理接收到的同步信号（108,208）。 该方法还包括通过与接收无线同步信道的无线信道不同的本地连接将所处理的同步信号发送到多个分布式设备（120,220）。 还公开了同步控制单元（300,400）和计算机程序产品。

公开(公告)号：WO2016003331A1

公开(公告)日：2016-01-07

申请号：PCT/SE2014/050822

申请日：2014-07-01

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： TROJER, Elmar ,  ERIKSSON, Per-Erik ,  LU, Chenguang ,  SANDSTRÖM, Lukas ,  BERG, Miguel

IPC: H04B3/28 ,  H04B3/20 ,  H03H7/48 ,  H04B1/58 ,  H04B3/30

CPC classification number: H01Q7/00 ,  H01Q1/48 ,  H01Q5/335 ,  H04B1/58 ,  H04B3/20 ,  H04B3/28 ,  H04B3/30 ,  H04M3/005

Abstract: It is presented a hybrid coil circuit comprising: a transformer; a common mode choke, wherein all choke windings are magnetically coupled; an impedance matching device connected on a middle choke winding, the impedance matching device being connected to ground;a first port being provided between a first choke winding and the impedance matching device; a second port being provided between a third choke winding and the impedance matching device; a third port being provided between either end of a second transformer winding; a first inductor arranged between the impedance matching device and the first port; and a second inductor arranged between the impedance matching device and the second port, wherein the first inductor and the second inductor are magnetically coupled.

Abstract translation: 提供了一种混合线圈电路，包括：变压器; 一种共模扼流器，其中所有扼流绕组磁耦合; 阻抗匹配装置，其连接在中间扼流圈上，所述阻抗匹配装置连接到地;第一端口设置在第一扼流绕组和所述阻抗匹配装置之间; 第二端口设置在第三扼流圈和阻抗匹配装置之间; 第三端口设置在第二变压器绕组的任一端之间; 布置在所述阻抗匹配装置和所述第一端口之间的第一电感器; 以及布置在所述阻抗匹配装置和所述第二端口之间的第二电感器，其中所述第一电感器和所述第二电感器磁耦合。

公开(公告)号：WO2015156714A1

公开(公告)日：2015-10-15

申请号：PCT/SE2014/050436

申请日：2014-04-09

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： TROJER, Elmar ,  BERG, Miguel ,  ERIKSSON, Per-Erik ,  GUNNARSSON, Fredrik ,  LU, Chenguang ,  ÖSTERLING, Jacob

IPC: H04W64/00 ,  H04W88/08

CPC classification number: H04W4/027 ,  H04W64/00 ,  H04W88/085

Abstract: It is presented a method for assisting the determining of a position of a wireless device, the method being performed in a network node connected to a plurality of remote radio head devices via a combiner. The method comprises the steps of: receiving an uplink signal via the combiner; comparing a carrier frequency of the uplink signal with a set of manipulation schemes for a carrier frequency of uplink signals, wherein the manipulation schemes are different for at least some of the plurality of remote radio head devices; and providing a proximity indication that the position of the wireless device is in the vicinity of a remote radio head device the frequency manipulation scheme of which best matches the uplink signal. A corresponding network node, computer program, and computer program product are also presented.

Abstract translation: 本发明提供了一种协助确定无线设备的位置的方法，所述方法是在经由组合器连接到多个远程无线电头设备的网络节点中执行的。 该方法包括以下步骤：经由组合器接收上行链路信号; 将所述上行链路信号的载波频率与用于上行链路信号的载波频率的一组操作方案进行比较，其中所述操作方案对于所述多个远程无线电头装置中的至少一些是不同的; 以及提供无线设备的位置在远程无线电头设备附近的接近指示，其频率操纵方案与上行链路信号最匹配。 还提出了相应的网络节点，计算机程序和计算机程序产品。

公开(公告)号：WO2014180503A1

公开(公告)日：2014-11-13

申请号：PCT/EP2013/059625

申请日：2013-05-08

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： TROJER, Elmar ,  BERG, Miguel ,  ERIKSSON, Per-Erik ,  LU, Chenguang ,  MAGESACHER, Thomas

IPC: H04L27/34 ,  H04L27/26 ,  H04L27/36 ,  H04L25/03

CPC classification number: H04L27/3411 ,  H04L5/0007 ,  H04L25/03828 ,  H04L27/2602 ,  H04L27/2614 ,  H04L27/2618 ,  H04L27/3405 ,  H04L27/366 ,  H04L27/367

Abstract: There is provided spectrum shaping of a signal. A frequency-domain representation of the signal to be spectrum-shaped is provided. The signal is associated with a set of constellation points having a minimum distance. A spectrum-shaped signal is determined by altering a proper subset of the constellation points whilst maintaining the minimum distance between all of the constellation points. The spectrum-shaped signal is transformed into a time-domain signal.

Abstract translation: 提供信号的频谱整形。 提供了频谱信号的频域表示。 信号与具有最小距离的一组星座点相关联。 通过改变星座点的适当子集同时保持所有星座点之间的最小距离来确定频谱形状的信号。 频谱信号被变换成时域信号。

公开(公告)号：WO2014142721A1

公开(公告)日：2014-09-18

申请号：PCT/SE2013/050248

申请日：2013-03-14

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： ERIKSSON, Per-Erik ,  CEDERHOLM, Daniel ,  LU, Chenguang

IPC: H04M11/06 ,  H04L5/14 ,  H04B3/46

CPC classification number: H04J3/10 ,  H04B3/487 ,  H04L5/1469 ,  H04M11/062

Abstract: The present invention relates to a method and a system for initiating bi-directional communication in a time-division duplex (TDD) communication system between a customer premises equipment (CPE) modem, such as a DSL modem, and an operator modem, such as a DSLAM. The invention is characterized in that the transmission of the CPE modem is aligned with the time-division duplex timing structure present in received crosstalk noise when transmitting initiation signals, so-called handshake tones.

Abstract translation: 本发明涉及在诸如DSL调制解调器的客户端设备（CPE）调制解调器和操作员调制解调器之间的时分双工（TDD）通信系统中发起双向通信的方法和系统，例如 一个DSLAM。 本发明的特征在于，当发送起始信号（即所谓的握手音）时，CPE调制解调器的传输与接收到的串扰噪声中存在的时分双工定时结构相一致。

公开(公告)号：WO2009123541A1

公开(公告)日：2009-10-08

申请号：PCT/SE2009/050147

申请日：2009-02-11

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ,  BERG, Miguel ,  ERIKSSON, Per-Erik ,  KÖLHI, Johan

Inventor： BERG, Miguel ,  ERIKSSON, Per-Erik ,  KÖLHI, Johan

IPC: H04L12/10 ,  H04L12/28 ,  H04L12/18 ,  H04M11/06

CPC classification number: H04L47/29 ,  H04L12/10 ,  H04L12/12 ,  H04L12/185 ,  H04L12/1881 ,  H04L12/2874 ,  H04M11/062 ,  Y02D50/40 ,  Y02D50/44

Abstract: The present invention relates to a method and an arrangement for the power management of a digital communication line such as a digital subscriber line DSL (2201). A problem addressed by the invention is that the transitioning of the digital subscriber line (2201) from a low transmission power state to a high transmission power state can cause disturbance to adjacent lines. This problem is solved by the current invention by an access node AN (2100) that is arranged to step-wise increase the power state until the high transmission power state has been reached. The invention also comprises embodiments of monitoring and detecting traffic events that serve as triggers of the transitioning.

Abstract translation: 本发明涉及数字用户线DSL（2201）等数字通信线路的电力管理的方法和装置。 本发明解决的一个问题是数字用户线路（2201）从低发射功率状态转换到高发射功率状态可能导致对相邻线路的干扰。 本发明由接入节点AN（2100）通过本发明解决，接入节点AN（2100）被布置成逐步增加功率状态直到达到高发射功率状态。 本发明还包括监视和检测用作转换触发器的交通事件的实施例。

公开(公告)号：WO2016053153A1

公开(公告)日：2016-04-07

申请号：PCT/SE2014/051135

申请日：2014-09-30

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： MEDEIROS, Eduardo Lins de ,  ERIKSSON, Per-Erik ,  HUANG, Yezi ,  LU, Chenguang ,  MAGESACHER, Thomas

IPC: H04B3/32 ,  H04M3/18 ,  H04M11/06

CPC classification number: H04B3/32 ,  H04M11/062

Abstract: Vector Control Entity and method therein for Disorderly Leaving Events, DLEs, causing Sudden Termination Change in a DSL system. The method comprises, when a DLE occurs on a line m in a vectored group of DSL lines, and the transmission on line m is, at least partly, continued: obtaining at least one error sample from CPEs connected to other lines in the vectored group of DSL lines, and calculating an estimate of the channel coefficients, H', changed due to the DLE. The estimate is calculated based on the at least one error sample, and thus a channel estimate is provided. The method further comprises modifying a downstream precoder, based on the channel estimate, such that retraining of the other lines in the vectored group due to the DLE is avoided. The estimate of the channel coefficients is calculated based on the model H'=H+CΛH.

Abstract translation: 矢量控制实体及其中的方法，用于在DSL系统中导致突发终止更改的无序离开事件DLE。 该方法包括：当DLE出现在DSL线路向量组中的线路m上时，并且线路m上的传输至少部分地继续：从连接到向量组中的其它线路的CPE获得至少一个错误样本 并且计算由于DLE而改变的信道系数H'的估计。 基于至少一个误差样本计算估计值，因此提供了信道估计。 该方法还包括基于信道估计来修改下行预编码器，使得避免了由于DLE引起的矢量组中的其他线路的再训练。 基于模型H'= H +CΛH计算信道系数的估计。

公开(公告)号：WO2015156718A1

公开(公告)日：2015-10-15

申请号：PCT/SE2014/050449

申请日：2014-04-11

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： ERIKSSON, Per-Erik ,  BERG, Miguel ,  LU, Chenguang ,  TROJER, Elmar

IPC: H04Q11/04 ,  H04W16/10 ,  H04W52/24

CPC classification number: H04Q11/0005 ,  H04L5/14 ,  H04Q11/04 ,  H04Q2011/0033 ,  H04Q2213/098 ,  H04Q2213/292 ,  H04W52/244

Abstract: It is presented a central node for digital subscriber line access multiplex. The central node supports a plurality of subscriber devices and comprises: a digital interface for upstream communication; a converter device for each one of the subscriber devices wherein each converter device comprises an A/D, analogue to digital, converter and a D/A, digital to analogue, converter; an analogue optical interface for communication of analogue signals for all of the subscriber devices with an intermediate distribution node for digital subscriber line access multiplex; a digital multiplexer/demultiplexer connected between the digital interface and the plurality converter devices; an analogue multiplexer/demultiplexer connected between the analogue optical interface and the plurality of converter devices; and a control signal generator connected to the analogue multiplexer/demultiplexer, wherein the control signal generator is arranged to generate an analogue control signal for controlling time division duplex operation at the intermediate distribution node.

Abstract translation: 它被呈现用于数字用户线路接入复用的中心节点。 中央节点支持多个用户设备，包括：用于上行通信的数字接口; 用于每个用户设备的转换器设备，其中每个转换器设备包括A / D，模数转换器和D / A，数模转换器; 用于通过用于数字用户线路多路复用的中间分配节点为所有用户设备通信模拟信号的模拟光接口; 连接在数字接口和多个转换器装置之间的数字多路复用器/解复用器; 连接在模拟光学接口和多个转换器装置之间的模拟多路复用器/解复用器; 以及连接到所述模拟多路复用器/解复用器的控制信号发生器，其中所述控制信号发生器被布置为产生用于控制所述中间分​​配节点处的时分双工操作的模拟控制信号。