公开(公告)号：US20160127076A1

公开(公告)日：2016-05-05

申请号：US14993363

申请日：2016-01-12

Applicant: LG ELECTRONICS INC.

Inventor： Ill Soo SOHN ,  Yong Ho SEOK ,  Kyoung Young SONG ,  Dae Won LEE ,  Byeong Woo KANG

IPC: H04L1/00 ,  H04L1/06

CPC classification number: H04L1/0003 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/06 ,  H04W24/10 ,  H04W72/04

Abstract: A method and a device for reporting a modulation and coding scheme (MCS) feedback in a wireless local area network are provided. A responding station receives, from a requesting station, a requesting Physical layer Protocol Data Unit (PPDU) for requesting a MCS feedback via a plurality of spatial streams. A recommended MCS is estimated under an assumption that the requesting station will transmit at least one first spatial stream among the plurality of spatial streams used for the requesting PPDU, The responding station transmits, to the requesting station, the MCS feedback including a recommended MCS field indicating the recommended MCS and a recommended stream field indicating a number of at least one recommended spatial stream. A number of the at least one first spatial stream used for estimating the recommended MCS is equal to the number of the at least one recommended spatial stream.

Abstract translation: 提供了一种用于在无线局域网中报告调制和编码方案（MCS）反馈的方法和装置。 响应站从请求站接收用于通过多个空间流请求MCS反馈的请求物理层协议数据单元（PPDU）。 在假设请求站将在用于请求PPDU的多个空间流中发送至少一个第一空间流的假设下，估计推荐的MCS。响应站向请求站发送包括推荐MCS字段的MCS反馈 指示推荐的MCS和推荐的流字段，指示至少一个推荐的空间流的数量。 用于估计推荐MCS的至少一个第一空间流的数目等于至少一个推荐空间流的数目。

公开(公告)号：US20160242233A1

公开(公告)日：2016-08-18

申请号：US15138700

申请日：2016-04-26

Applicant: LG ELECTRONICS INC.

Inventor： Byeong Woo Kang ,  Ill Soo SOHN ,  Dae Won LEE ,  Yong Ho SEOK

IPC: H04W84/12 ,  H04L1/00 ,  H04B7/04

CPC classification number: H04W84/12 ,  H04B7/0452 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0031 ,  H04L1/1685

Abstract: A method of link adaptation performed by an access point supporting multi user (MU) multiple input multiple output (MIMO) in wireless local area network system is provided. The method includes transmitting, to a first station, a physical layer convergence procedure (PLCP) protocol data unit (PPDU) containing a modulation and coding scheme (MCS) request (MRQ) and receiving, from the first station, a MCS feedback (MFB) in response to the MRQ, wherein the first station is one of destination stations of MU-MIMO transmission performed by the access point, and the MFB includes a recommended MCS value computed, by the first station, on the assumption that the first station, as a member of the destination stations, receives data transmitted over at least one spatial stream allocated to the first station in MU-MIMO transmission.

Abstract translation: 提供了一种由无线局域网系统中支持多用户（MU）多输入多输出（MIMO）的接入点进行的链路自适应的方法。 该方法包括向第一站发送包含调制和编码方案（MCS）请求（MRQ）的物理层汇聚过程（PLCP）协议数据单元（PPDU），并从第一站接收MCS反馈（MFB ），其中所述第一站是由所述接入点执行的MU-MIMO传输的目的地站之一，并且所述MFB包括由所述第一站计算的推荐MCS值，假设所述第一站， 作为目的站的成员，接收通过MU-MIMO传输中分配给第一站的至少一个空间流发送的数据。

公开(公告)号：US20160100317A1

公开(公告)日：2016-04-07

申请号：US14966076

申请日：2015-12-11

Applicant: LG ELECTRONICS INC.

Inventor： Jong Hyun PARK ,  Ill Soo SOHN ,  Eun Sun KIM ,  Yong Ho SEOK

IPC: H04W16/10 ,  H04L12/26 ,  H04W24/08

CPC classification number: H04W16/10 ,  G01S7/021 ,  H04L43/12 ,  H04W16/14 ,  H04W24/08 ,  H04W84/12

Abstract: A method for a wireless local area network performed by an access point (AP) configured to communicate over a primary subchannel and a secondary subchannel. The AP transmits a frame including a quiet channel element to a receiving station. The quiet channel element indicates that the secondary subchannel is to be quieted during a quiet interval in which the AP tests the secondary subchannel for a presence of radar transmissions and the receiving station does not send any frame to the AP. The quiet channel element includes an AP quiet mode field indicating whether a communication to the AP is allowed within the primary subchannel during the quiet interval. The primary subchannel and the secondary subchannel are quieted during the quiet interval if the AP quiet mode field indicates the communication to the AP is not allowed with the primary subchannel during the quiet interval.

Abstract translation: 一种由接入点（AP）执行的无线局域网的方法，所述接入点被配置为通过主子信道和次子信道进行通信。 AP向接收站发送包括安静信道元素的帧。 安静信道单元指示在安静间隔期间，次级子信道将被安静，在该间隔期间，AP测试辅助子信道用于雷达传输的存在，并且接收站不向AP发送任何帧。 安静信道元素包括AP安静模式字段，指示在静默间隔期间是否允许在主子信道内与AP的通信。 如果AP安静模式字段指示在静默间隔期间与主要子信道不允许与AP的通信，则在静默间隔期间，主子信道和辅助子信道静音。

公开(公告)号：US20160173259A1

公开(公告)日：2016-06-16

申请号：US14993881

申请日：2016-01-12

Applicant: LG ELECTRONICS INC.

Inventor： Dae Won LEE ,  Ill Soo SOHN ,  Yong Ho SEOK

IPC: H04L5/00 ,  H04W16/28 ,  H04L1/18

CPC classification number: H04L5/0053 ,  H04B7/0452 ,  H04B7/0636 ,  H04L1/1812 ,  H04L5/0023 ,  H04W16/28 ,  H04W84/12

Abstract: A method, performed by a transceiver, is provided for channel sounding in a wireless local area network. A null data packet announcement (NDPA) frame is received from a transmitter to initiate the channel sounding. A null data packet (NDP) is received from the transmitter, the NDP following the NDPA frame. First feedback data split into a plurality of segments in a single aggregated medium access control protocol data unit (A-MPDU) is transmitted. A retransmission request is received from the transmitter, the retransmission request including a segment retransmission bitmap field indicating at least one segment of the plurality of segments for retransmission. In response to the retransmission request, second feedback data including the at least one segment indicated in the segment retransmission bitmap field is transmitted.

Abstract translation: 提供了一种由收发器执行的方法，用于在无线局域网中进行信道探测。 从发射机接收到零数据分组公告（NDPA）帧，以发起信道探测。 从发射机接收到NDP数据，NDP跟随NDPA帧。 发送在单个聚合介质访问控制协议数据单元（A-MPDU）中分割成多个段的第一反馈数据。 从发射机接收到重传请求，所述重发请求包括指示所述多个片段中的至少一个片段进行重传的片段重传位图字段。 响应于重传请求，发送包括段重传位图字段中指示的至少一个段的第二反馈数据。

公开(公告)号：US20140293916A1

公开(公告)日：2014-10-02

申请号：US14297483

申请日：2014-06-05

Applicant: LG ELECTRONICS INC.

Inventor： Ill Soo SOHN ,  Yong Ho SEOK ,  Kyoung Young SONG ,  Dae Won LEE ,  Byeong Woo KANG

IPC: H04W72/04 ,  H04W24/10

CPC classification number: H04L1/0003 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/06 ,  H04W24/10 ,  H04W72/04

Abstract: A method and device for link adaptation in a wireless local area network system, are discussed. The method may include receiving, by a responding station, from a requesting station, a requesting Physical layer Protocol Data Unit (PPDU) for requesting a modulation and coding scheme (MCS) feedback via a plurality of spatial streams, the requesting PPDU including an MCS request (MRQ) field that is set to one to request the responding station to provide the MCS feedback; and transmitting, by the responding station, to the requesting station, the MCS feedback including a recommended MCS field and a recommended stream field. The recommended MCS field indicates a recommended MCS, the recommended stream field indicates a number of at least one recommended spatial stream, and the number of the at least one recommended spatial stream is less than a number of the plurality of spatial streams used for the requesting PPDU.

Abstract translation: 讨论了一种在无线局域网系统中进行链路自适应的方法和装置。 所述方法可以包括由响应站从请求站接收用于经由多个空间流请求调制和编码方案（MCS）反馈的请求物理层协议数据单元（PPDU），所述请求PPDU包括MCS 请求（MRQ）字段设置为1以请求响应站提供MCS反馈; 并且由响应站向请求站发送MCS反馈，其包括推荐的MCS字段和推荐流字段。 推荐的MCS字段指示推荐的MCS，推荐的流字段指示至少一个推荐的空间流的数量，并且至少一个推荐的空间流的数量小于用于请求的多个空间流的数量 PPDU。

公开(公告)号：US20180006789A1

公开(公告)日：2018-01-04

申请号：US15689117

申请日：2017-08-29

Applicant: LG ELECTRONICS INC.

Inventor： Dae Won LEE ,  Ill Soo SOHN ,  Yong Ho SEOK

IPC: H04L5/00 ,  H04W84/12 ,  H04L1/18 ,  H04B7/06 ,  H04W16/28 ,  H04B7/0452

CPC classification number: H04L5/0053 ,  H04B7/0452 ,  H04B7/0636 ,  H04L1/1812 ,  H04L5/0023 ,  H04W16/28 ,  H04W84/12

Abstract: A method is provided for channel sounding in a wireless local area network. A responding station receives a null data packet announcement (NDPA) frame and a null data packet (NDP) frame for the channel sounding from a requesting station. The NDP frame follows the NDPA frame. The responding station receives a first poll frame from the requesting station. In response to the first poll frame, the responding station transmits a first feedback data field including beamforming feedback information and signal to noise ratio (SNR) information to the requesting station. The responding station receives a second poll frame including a segment retransmission bitmap field indicating at least one segment of the first feedback data field from the requesting station. In response to the second poll frame, the responding station transmits a second feedback data field including the at least one segment of the first feedback data field to the requesting station.

公开(公告)号：US20160143018A1

公开(公告)日：2016-05-19

申请号：US14946271

申请日：2015-11-19

Applicant: LG ELECTRONICS INC.

Inventor： Hyang Sun You ,  Ill Soo SOHN ,  Yong Ho Seok ,  Jong Hyun Park

IPC: H04W72/04 ,  H04B7/06 ,  H04B7/04

CPC classification number: H04W72/046 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0697 ,  H04L5/0053 ,  H04L27/2602 ,  H04W84/12

Abstract: In an aspect, a method of receiving a data unit, performed by an Access Point (AP), in a Wireless LAN (WLAN) system is provided. The method includes transmitting a signal protection frame, the signal protection frame comprising a group ID field indicating a Multiple Input Multiple Output (MIMO) transmission STA group including a first station (STA) and a second STA; and, a spatial stream field indicating a number of spatial streams allocated to each of member STAs included in the MIMO transmission STA group; receiving a first preamble for a first data unit from the first STA; receiving a second preamble for a second data unit from the second STA; and simultaneously receiving the first data unit from the first STA and the second data unit from the second STA.

Abstract translation: 在一方面，提供了一种在无线LAN（WLAN）系统中接收由接入点（AP）执行的数据单元的方法。 该方法包括发送信号保护帧，信号保护帧包括指示包括第一站（STA）和第二STA的多输入多输出（MIMO）传输STA组的组ID字段; 以及指示分配给包含在MIMO发送STA组中的每个成员STA的空间流的数量的空间流字段; 从第一STA接收第一数据单元的第一前同步码; 从第二STA接收第二数据单元的第二前导码; 同时从第一STA和第二数据单元同时从第二STA接收第一数据单元。

公开(公告)号：US20150311964A1

公开(公告)日：2015-10-29

申请号：US14791032

申请日：2015-07-02

Applicant: LG ELECTRONICS INC.

Inventor： Ill Soo SOHN ,  Yong Ho SEOK ,  Jong Hyun PARK ,  Dae Won LEE ,  Byeong Woo KANG

IPC: H04B7/04 ,  H04W84/12 ,  H04B7/06

CPC classification number: H04B7/0478 ,  H04B7/0617 ,  H04L5/0048 ,  H04W74/06 ,  H04W84/12

Abstract: A method for a channel sounding in a wireless local area network. A station receives a 20 MHz null data packet announcement (NDPA) frame and at least one duplicate 20 MHz NDPA frame. The at least one duplicate 20 MHz NDPA frame is a duplicate of the 20 MHz NDPA frame. The station also receives a null data packet (NDP) following the 20 MHz NDPA frame and the at least one duplicate 20 MHz NDPA frame. The bandwidth over which the 20 MHz NDPA frame and the at least one duplicate 20 MHz NDPA frame are transmitted is the same as a bandwidth over which the NDP is transmitted. The station transmits a report frame for the channel sounding. The 20 MHz NDPA frame and the at least one duplicate 20 MHz NDPA frame comprise bandwidth information indicating the bandwidth over which the frames are transmitted.

Abstract translation: 一种用于无线局域网中的信道探测的方法。 站点接收20MHz空数据分组公告（NDPA）帧和至少一个重复的20MHz NDPA帧。 至少一个20 MHz的NDPA帧是20 MHz NDPA帧的副本。 该站还在20MHz NDPA帧和至少一个重复的20MHz NDPA帧之后接收空数据分组（NDP）。 传输20MHz NDPA帧和至少一个重复的20MHz NDPA帧的带宽与发送NDP的带宽相同。 车站发送通道侦听报警帧。 20MHz NDPA帧和至少一个重复的20MHz NDPA帧包括指示发送帧的带宽的带宽信息。

公开(公告)号：US20150098434A1

公开(公告)日：2015-04-09

申请号：US14570958

申请日：2014-12-15

Applicant: LG ELECTRONICS INC.

Inventor： Dae Won LEE ,  Ill Soo SOHN ,  Yong Ho SEOK

IPC: H04L5/00 ,  H04W84/12

CPC classification number: H04L5/0053 ,  H04B7/0452 ,  H04B7/0636 ,  H04L1/1812 ,  H04L5/0023 ,  H04W16/28 ,  H04W84/12

Abstract: A channel sounding method in a wireless local area network (WLAN) system is provided. The method, performed by a transmitter, includes transmitting a null data packet announcement (NDPA) frame to a receiver to initiate channel sounding, and transmitting a null data packet (NDP) to the receiver and receiving a feedback frame. The feedback frame includes a plurality of segment frames and a channel feedback report. The channel feedback report is split into a plurality of feedback segments. Each of the plurality of feedback segments is respectively included in each of the plurality of segment frames. Each of the plurality of segment frames includes a first-segment subfield indicating whether the each of the plurality of feedback segments included is a first segment and a remaining-segment subfield indicating the number of remaining feedback segments.

Abstract translation: 提供了一种无线局域网（WLAN）系统中的信道探测方法。 由发射机执行的方法包括向接收机发送空数据分组通知（NDPA）帧以发起信道探测，以及向接收机发送空数据分组（NDP）并接收反馈帧。 反馈帧包括多个分段帧和信道反馈报告。 信道反馈报告被分成多个反馈段。 多个反馈段中的每一个分别包括在多个段帧中的每一个中。 多个分段帧中的每一个包括指示所包括的多个反馈分段中的每一个是否是第一分段的第一分段子领域和指示剩余反馈段的数量的剩余分段子字段。

公开(公告)号：US20130114757A1

公开(公告)日：2013-05-09

申请号：US13670324

申请日：2012-11-06

Applicant: LG ELECTRONICS INC.

Inventor： Jong Hyun PARK ,  Eun Sun KIM ,  Yun Jung YI ,  Ill Soo SOHN ,  Bong Hoe KIM

IPC: H04L27/04

CPC classification number: H04L27/2613

Abstract: Method and apparatus of transmitting PLCP header for sub 1 GHz communication is disclosed. A method of transmitting a physical layer convergence protocol(PLCP) header may comprise generating a short training field (STF) sequence over 1 orthogonal frequency division multiplexing (OFDM) symbol, transforming the STF sequence to repeated waveform patterns in time domain and transmitting the PLCP header comprising the STF sequence, wherein the STF sequence may be a sequence transformed to repeated waveform patterns in time domain by inverse discrete Fourier transform (IDFT).

Abstract translation: 公开了发送用于1GHz通信的PLCP报头的方法和装置。 传输物理层汇聚协议（PLCP）报头的方法可以包括：通过1个正交频分复用（OFDM）符号生成短训练场（STF）序列，将STF序列变换成时域中的重复波形模式，并发送PLCP 包括STF序列的标题，其中STF序列可以是通过反离散傅立叶变换（IDFT）在时域中变换成重复波形图案的序列。