公开(公告)号：US10298333B2

公开(公告)日：2019-05-21

申请号：US15691915

申请日：2017-08-31

Applicant: Futurewei Technologies, Inc.

Inventor： Dong Wei ,  Shun Lou ,  Chen Gong ,  Nan Wu ,  Zhengyuan Xu

IPC: H05B37/02 ,  H04B10/116 ,  H04B10/524

Abstract: A method implemented by a visible light communication (VLC) device comprises determining, by a processor of the VLC device, n time slots for a signal block based on a dimming value, the signal block specifying a predetermined duration of time and the signal block being divided equally into n time slots, with the dimming value specifying a light intensity of light to be emitted by the light source, determining, by the processor, w pulses to be transmitted during one or more of the n time slots of the signal block, based on the dimming value and according to a pulse pattern indicating a position of the w pulses transmitted during the one or more of the n time slots, and determining, by the processor, a codeword based on n and w, the codeword corresponding to the pulse pattern.

公开(公告)号：US20180069628A1

公开(公告)日：2018-03-08

申请号：US15691915

申请日：2017-08-31

Applicant: Futurewei Technologies, Inc.

Inventor： Dong Wei ,  Shun Lou ,  Chen Gong ,  Nan Wu ,  Zhengyuan Xu

IPC: H04B10/116 ,  H04J14/00 ,  H05B37/02

CPC classification number: H04B10/524 ,  H04B10/116 ,  H05B37/0272

Abstract: A method implemented by a visible light communication (VLC) device comprises determining, by a processor of the VLC device, n time slots for a signal block based on a dimming value, the signal block specifying a predetermined duration of time and the signal block being divided equally into n time slots, with the dimming value specifying a light intensity of light to be emitted by the light source, determining, by the processor, w pulses to be transmitted during one or more of the n time slots of the signal block, based on the dimming value and according to a pulse pattern indicating a position of the w pulses transmitted during the one or more of the n time slots, and determining, by the processor, a codeword based on n and w, the codeword corresponding to the pulse pattern.

公开(公告)号：US09614581B2

公开(公告)日：2017-04-04

申请号：US14204666

申请日：2014-03-11

Applicant: Futurewei Technologies, Inc.

Inventor： Dong Wei ,  Jie Lv ,  Jianhua Liu

IPC: H04B3/32 ,  H04B1/401 ,  H04M11/06

CPC classification number: H04B3/32 ,  H04B1/401 ,  H04M11/062 ,  Y02D50/44

Abstract: An apparatus comprising a first transceiver unit (TU) for coupling to a first subscriber line, at least one next TU for coupling to at least one next subscriber line, and a processor coupled to the first TU and the at least one next TU, wherein the processor is configured to determine a link state in which data transmission is disabled for the duration of one or more symbols in a superframe, instruct the first TU to operate in the determined link state, and coordinate data transmission by the first TU and the at least one next TU to avoid an increase of crosstalk from the first line to the at least one next subscriber line due to the first TU operating in the determined link state.

公开(公告)号：US20140050105A1

公开(公告)日：2014-02-20

申请号：US13682842

申请日：2012-11-21

Applicant: FUTUREWEI TECHNOLOGIES, INC.

Inventor： Ruxiang Wang ,  Yan Zhang ,  Guozhu Long ,  Dong Wei

IPC: H04L29/06

CPC classification number: H04L69/166 ,  H04L1/0057 ,  H04L1/08 ,  H04L1/1874 ,  H04L12/2898 ,  H04L43/0888 ,  H04L43/0894 ,  H04L47/25 ,  H04L69/324 ,  H04M11/062

Abstract: An apparatus used for digital subscriber line (DSL) communication comprising a processor configured to generate a data transmission unit (DTU) comprising user data and a transmitter configured to repeatedly transmit the DTU a plurality of times onto a subscriber line, wherein a number of the plurality of times is adaptively based on a user data rate of the subscriber line. A method of data communication comprising generating a DTU comprising user data and repeatedly transmitting the DTU a plurality of times onto a subscriber line, wherein a number of the plurality of times is adaptively based on a data rate of the subscriber line.

Abstract translation: 一种用于数字用户线（DSL）通信的装置，包括：处理器，被配置为生成包括用户数据的数据传输单元（DTU）;以及发射机，被配置为重复地将DTU多次发送到用户线上，其中， 基于用户线的用户数据速率自适应地进行多次。 一种数据通信方法，包括：生成包含用户数据的DTU并将DTU多次重复地发送到用户线路，其中多个次数是根据用户线路的数据速率进行自适应的。

公开(公告)号：US20140023190A1

公开(公告)日：2014-01-23

申请号：US13718621

申请日：2012-12-18

Applicant: FUTUREWEI TECHNOLOGIES, INC.

Inventor： Haixiang Liang ,  Dong Wei

IPC: H04J3/10

CPC classification number: H04J3/10 ,  H04B3/32 ,  H04L25/03343

Abstract: A digital subscriber line access multiplexer (DSLAM) configured to couple to a first subscriber line and a second subscriber line, wherein the DSLAM comprises at least one transmitter configured to transmit a first signal onto the first subscriber line in a first time slot, transmit a second signal onto the second subscriber line in the first time slot, wherein the first and second signals are linearly related and are intended for a first customer premise equipment (CPE), transmit a third signal onto the second subscriber line in a second time slot, and transmit a fourth signal onto the first subscriber line in the second time slot, wherein the third and fourth signals are linearly related and are intended for a second CPE.

Abstract translation: 一种被配置为耦合到第一用户线路和第二用户线路的数字用户线路接入复用器（DSLAM），其中所述DSLAM包括被配置为在第一时隙中将第一信号发送到所述第一用户线路上的至少一个发射机， 第二信号在第一时隙中的第二用户线路上，其中第一和第二信号是线性相关的，并且意图用于第一客户驻地设备（CPE），在第二时隙中将第三信号发送到第二用户线路上， 并且在所述第二时隙中将第四信号发送到所述第一用户线上，其中所述第三和第四信号是线性相关的并且用于第二CPE。

公开(公告)号：US20130279687A1

公开(公告)日：2013-10-24

申请号：US13865791

申请日：2013-04-18

Applicant: FUTUREWEI TECHNOLOGIES, INC.

Inventor： Dong Wei

IPC: H04L1/00

CPC classification number: H04L1/0002 ,  H04L1/0003 ,  H04L1/20 ,  H04L5/0046 ,  H04L5/006 ,  H04M11/062 ,  Y02D50/10

Abstract: A method implemented by a first network component (NC) in a digital subscriber line (DSL) system comprising retrieving an on-line reconfiguration (OLR) request from a control entity (CE), wherein the OLR request is generated by the CE based on a noise increase on a subscriber line between the NC and a second NC in the DSL system, and in response to the OLR request, transmitting a message to a receiver in the second NC to request for a reduced data rate on the subscriber line.

Abstract translation: 一种由数字用户线（DSL）系统中的第一网络组件（NC）实现的方法，包括从控制实体（CE）检索在线重配置（OLR）请求，其中所述OLR请求由所述CE基于 在DSL系统中的NC和第二NC之间的用户线路上的噪声增加，并且响应于OLR请求，向第二NC中的接收机发送消息以请求用户线路上的降低的数据速率。

公开(公告)号：US09020145B2

公开(公告)日：2015-04-28

申请号：US13718621

申请日：2012-12-18

Applicant: Futurewei Technologies, Inc.

Inventor： Haixiang Liang ,  Dong Wei

IPC: H04M1/76 ,  H04J1/12 ,  H04B7/10 ,  H04J3/10 ,  H04B3/32 ,  H04L25/03

CPC classification number: H04J3/10 ,  H04B3/32 ,  H04L25/03343

Abstract: A digital subscriber line access multiplexer (DSLAM) configured to couple to a first subscriber line and a second subscriber line, wherein the DSLAM comprises at least one transmitter configured to transmit a first signal onto the first subscriber line in a first time slot, transmit a second signal onto the second subscriber line in the first time slot, wherein the first and second signals are linearly related and are intended for a first customer premise equipment (CPE), transmit a third signal onto the second subscriber line in a second time slot, and transmit a fourth signal onto the first subscriber line in the second time slot, wherein the third and fourth signals are linearly related and are intended for a second CPE.

Abstract translation: 一种被配置为耦合到第一用户线路和第二用户线路的数字用户线路接入复用器（DSLAM），其中所述DSLAM包括被配置为在第一时隙中将第一信号发送到所述第一用户线路上的至少一个发射机， 第二信号在第一时隙中的第二用户线路上，其中第一和第二信号是线性相关的，并且意图用于第一客户驻地设备（CPE），在第二时隙中将第三信号发送到第二用户线路上， 并且在所述第二时隙中将第四信号发送到所述第一用户线上，其中所述第三和第四信号是线性相关的并且用于第二CPE。

公开(公告)号：US20160295014A1

公开(公告)日：2016-10-06

申请号：US15087496

申请日：2016-03-31

Applicant: Futurewei Technologies, Inc.

Inventor： Dong Wei

IPC: H04M3/34 ,  H04B3/32 ,  H04M3/30

CPC classification number: H04M3/34 ,  H04B3/32 ,  H04M3/304

Abstract: A method implemented in a network element (NE), comprising determining, via a processor of the NE, a channel order for a set of subscriber lines at each of a plurality of subcarriers to equalize data rates of the set of subscriber lines, wherein the set of subscriber lines is coupled to a plurality of remote NEs associated with a plurality of users, determining, via the processor, parameters for a crosstalk mitigation filter for a first subcarrier from the plurality of subcarriers according to channel responses of the set of subscriber lines at the first subcarrier and a first channel order from the channel orders for the first subcarrier, and sending, via a transmitter of the NE, parameters of the crosstalk mitigation filter to facilitate joint processing of data of the plurality of users for crosstalk mitigation.

Abstract translation: 一种在网络元件（NE）中实现的方法，包括经由所述NE的处理器确定在多个子载波中的每一个上的一组用户线路的信道顺序以均衡所述一组用户线路的数据速率，其中， 一组用户线路耦合到与多个用户相关联的多个远程网元，根据该组用户线路的信道响应，经由处理器确定用于来自多个子载波的第一子载波的串扰减轻滤波器的参数 在第一子载波处和来自第一子载波的信道顺序的第一信道顺序，以及经由NE的发射机发送串扰减轻滤波器的参数，以促进用于串扰减轻的多个用户的数据的联合处理。

公开(公告)号：US09288032B2

公开(公告)日：2016-03-15

申请号：US13862126

申请日：2013-04-12

Applicant: Futurewei Technologies, Inc.

Inventor： Dong Wei ,  Cao Shi ,  Xiaoyue He

IPC: H04L5/14 ,  H04B3/32 ,  H04M11/06 ,  H04L27/26

CPC classification number: H04L5/14 ,  H04B3/32 ,  H04L5/1469 ,  H04L27/2602 ,  H04M11/062

Abstract: An access node for digital subscriber line (DSL) communication comprising a transceiver configured to couple to a subscriber line, and a control entity coupled to the transceiver, wherein the control entity is configured to receive a request to switch to a nominal asymmetry ratio between an upstream data rate and a downstream data rate after initialization of the subscriber line, determine a flexible time period value based on the nominal asymmetry ratio, wherein the flexible time period is used to define a time division duplexing (TDD) frame structure, and forward a message that comprises the flexible time period value to the transceiver, wherein the transceiver is configured to transmit an upstream transmission using the TDD frame structure over the subscriber line, and receive a downstream transmission using the TDD frame structure over the subscriber line.

Abstract translation: 一种用于数字用户线（DSL）通信的接入节点，包括被配置为耦合到用户线路的收发机以及耦合到所述收发机的控制实体，其中所述控制实体被配置为接收切换到所述收发器之间的标称不对称比率的请求 上行数据速率和用户线初始化后的下行数据速率，基于标称不对称比确定灵活的时间周期值，其中灵活时间周期用于定义时分双工（TDD）帧结构，并且转发 消息，其包括对收发器的灵活时间周期值，其中收发器被配置为在用户线路上使用TDD帧结构发送上行传输，并且在用户线路上使用TDD帧结构接收下行传输。

公开(公告)号：US10128941B2

公开(公告)日：2018-11-13

申请号：US15911351

申请日：2018-03-05

Applicant: Futurewei Technologies, Inc.

Inventor： Dong Wei ,  Shun Lou ,  Chen Gong ,  Nan Wu ,  Zhengyuan Xu

IPC: H04B10/079 ,  H04J14/02 ,  H04L27/36 ,  H04B10/516 ,  H04L27/26 ,  H04B10/116 ,  H04B10/564

Abstract: A method of dimming control for orthogonal frequency division multiplexing (OFDM)-based visible light communication (VLC). The method includes transmitting, by an optical communication device, an optical signal using OFDM with all active sub-carriers when a first dimming level is observed, transmitting, by the optical communication device, the optical signal using OFDM with a first subset of active sub-carriers and without sub-carrier index modulation (SIM) when a second dimming level is observed, wherein the second dimming level is less than the first dimming level; and transmitting, by the optical communication device, the optical signal using OFDM with a second subset of active sub-carriers and with SIM when a third dimming level is observed, wherein the second subset of the active sub-carriers is smaller than the first subset of the active sub-carriers, and wherein the third dimming level is less than the second dimming level.