公开(公告)号：US20190342826A1

公开(公告)日：2019-11-07

申请号：US16515704

申请日：2019-07-18

Applicant: Salvatore Talarico ,  Carlos Aldana ,  Bishwarup Mondal ,  Jeongho Jeon ,  Dae Won Lee

Inventor： Salvatore Talarico ,  Carlos Aldana ,  Bishwarup Mondal ,  Jeongho Jeon ,  Dae Won Lee

IPC: H04W48/16 ,  H04L5/00 ,  H04W56/00 ,  H04W72/00

Abstract: Systems and methods of providing timing information for initial access in an unlicensed band are described. A UE monitors a new radio discovery signal (NRDS-U) window in an unlicensed band for a DRS transmission that is constrained to be transmitted within the NRDS-U window. The UE determines initial access information, including an offset that indicates when the DRS transmission occurs within the NRDS-U window, and engages in initial access dependent on the offset. The offset is from a radio frame or half radio frame boundary or the start of the NRDS-U window. The offset is indicated in three least/most significant bits an SSB index or from an s1-offset field in a MIB of the SSB. When the base station uses a DFS channel, the base station transmits a periodic signal to emulate a radar signal.

公开(公告)号：US09794032B2

公开(公告)日：2017-10-17

申请号：US13582036

申请日：2011-03-02

Applicant: Byeong Woo Kang ,  Yu Jin Noh ,  Dae Won Lee ,  Yong Ho Seok

Inventor： Byeong Woo Kang ,  Yu Jin Noh ,  Dae Won Lee ,  Yong Ho Seok

IPC: H04W74/00 ,  H04L5/00 ,  H04L1/18 ,  H04W72/04 ,  H04B7/0452

CPC classification number: H04L5/003 ,  H04B7/0452 ,  H04L1/1861 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0053 ,  H04W72/0406

Abstract: Provided is a method of receiving a physical layer convergence procedure (PLCP) protocol data unit (PPDU) by an access point (AP) in a wireless local area (LAN) system. The method includes: allocating a first transmission channel bandwidth to a first station (STA) which is multiple input multiple output (MIMO)-paired with the AP; allocating a second transmission channel bandwidth to a second STA which is MIMO-paired with the AP; transmitting to the first STA and the second STA a sync trigger for determining a time point at which the first STA transmits a first PPDU and a time point at which the second STA transmits a second PPDU; and receiving simultaneously the first PPDU and the second PPDU from the first STA and the second STA.

公开(公告)号：US09357489B2

公开(公告)日：2016-05-31

申请号：US13991822

申请日：2011-10-27

Applicant: Suh Wook Kim ,  Yong Ho Seok ,  Bong Hoe Kim ,  Dae Won Lee

Inventor： Suh Wook Kim ,  Yong Ho Seok ,  Bong Hoe Kim ,  Dae Won Lee

IPC: H04W52/02 ,  H04W74/04 ,  H04W74/06 ,  H04W28/04 ,  H04L1/16 ,  H04L12/403 ,  H04W8/26 ,  H04W24/00 ,  H04W48/08 ,  H04W84/12

CPC classification number: H04W52/0225 ,  H04W8/26 ,  H04W24/00 ,  H04W48/08 ,  H04W52/0229 ,  H04W74/06 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/21

Abstract: A method for a power save mode operation in a wireless local area network (WLAN) system is provided. The method includes transmitting, by an access point (AP), a traffic indication map (TIM) element that announces existence of buffered traffic, wherein the TIM element includes an association ID (AID) assigned to a buffered STA having the buffered traffic when the buffered station (STA) is associated with the AP; receiving, by the AP, a poll frame for requesting data frame transmission from a candidate STA, wherein the poll frame contains an AID of the candidate STA and a medium access control (MAC) address which is a unique identifying information of the candidate STA; and determining, by the AP, whether the candidate STA is the buffered STA on the basis of the AID and the MAC address of the candidate STA.

Abstract translation: 提供了一种用于无线局域网（WLAN）系统中的省电模式操作的方法。 该方法包括由接入点（AP）发送通知缓冲业务的存在的业务指示映射（TIM）元素，其中，所述TIM元素包括分配给具有缓冲流量的缓冲STA的关联ID（AID） 缓冲站（STA）与AP相关联; 由AP接收用于从候选STA请求数据帧传输的轮询帧，其中轮询帧包含候选STA的AID和作为候选STA的唯一标识信息的介质访问控制（MAC）地址; 以及基于所述候选STA的AID和MAC地址，由所述AP确定所述候选STA是否为所述缓冲STA。

公开(公告)号：US09287942B2

公开(公告)日：2016-03-15

申请号：US13638775

申请日：2011-04-27

Applicant: Byeong Woo Kang ,  Dong Wook Roh ,  Dae Won Lee ,  Yu Jin Noh ,  Bong Hoe Kim ,  Dong Youn Seo

Inventor： Byeong Woo Kang ,  Dong Wook Roh ,  Dae Won Lee ,  Yu Jin Noh ,  Bong Hoe Kim ,  Dong Youn Seo

IPC: H04W72/04 ,  H04B7/04 ,  H04L1/18 ,  H04L1/00 ,  H04L25/03 ,  H04W8/30 ,  H04B7/06

CPC classification number: H04B7/0417 ,  H04B7/0404 ,  H04B7/0486 ,  H04B7/0623 ,  H04L1/0061 ,  H04L1/1822 ,  H04L1/1861 ,  H04L1/1864 ,  H04L1/1887 ,  H04L1/1893 ,  H04L25/03929

Abstract: The present description relates to a wireless communication system, and more particularly, to a method and apparatus for uplink multiple input multiple output (MIMO) transmission. A method for performing an uplink MIMO transmission according to one embodiment of the present invention comprises the following steps: transmitting, from a first subframe, a first data block and a second data block through a first HARQ process and a second HARQ process, respectively; receiving, at a second subframe, uplink scheduling control information on the first data block and control information which indicates inactivation of the second data block; setting HARQ feedback information on the second data block to an ACK state; and performing retransmission of the first data block from a third subframe on the basis of the uplink scheduling control information on the first data block. Retransmission of the second data block may not be performed until uplink scheduling control information on the second data block is received.

Abstract translation: 本发明涉及一种无线通信系统，更具体地，涉及一种用于上行链路多输入多输出（MIMO）传输的方法和装置。 根据本发明的一个实施例的用于执行上行链路MIMO传输的方法包括以下步骤：分别通过第一HARQ进程和第二HARQ进程从第一子帧发送第一数据块和第二数据块; 在第二子帧处接收关于第一数据块的上行链路调度控制信息和指示第二数据块的失活的控制信息; 将所述第二数据块上的HARQ反馈信息设置为ACK状态; 并且基于关于第一数据块的上行链路调度控制信息，从第三子帧执行第一数据块的重传。 在接收到关于第二数据块的上行链路调度控制信息之前，可以不执行第二数据块的再发送。

公开(公告)号：US09271309B2

公开(公告)日：2016-02-23

申请号：US13022754

申请日：2011-02-08

Applicant: Eun Sun Kim ,  Yong Ho Seok ,  Dae Won Lee

Inventor： Eun Sun Kim ,  Yong Ho Seok ,  Dae Won Lee

IPC: H04W72/04 ,  H04W4/00 ,  H04W28/20 ,  H04W28/16 ,  H04W74/08 ,  H04W16/14

CPC classification number: H04W74/0816 ,  H04W16/14 ,  H04W72/0453

Abstract: A method and apparatus of requesting a channel access in a wireless local area network is provided. A transmitter transmits a plurality of Request To Send (RTS) frames over a plurality of requesting channels and receives at least one Clear To Send (CTS) frame over at least one responding channel as a response for the plurality of RTS frames. Each of the plurality of RTS frames indicates a bandwidth for the plurality of requesting channels, and the at least one CTS frame indicates a bandwidth for the at least one responding channel.

Abstract translation: 提供一种在无线局域网中请求信道接入的方法和装置。 发射机通过多个请求信道发送多个请求发送（RTS）帧，并通过至少一个响应信道接收至少一个清除发送（CTS）帧作为多个RTS帧的响应。 所述多个RTS帧中的每一个指示所述多个请求信道的带宽，并且所述至少一个CTS帧指示所述至少一个响应信道的带宽。

公开(公告)号：US09215035B2

公开(公告)日：2015-12-15

申请号：US13128626

申请日：2009-12-08

Applicant: Bong Hoe Kim ,  Yu Jin Noh ,  Dae Won Lee

Inventor： Bong Hoe Kim ,  Yu Jin Noh ,  Dae Won Lee

IPC: H04W4/00 ,  H04L1/00 ,  H04W74/08 ,  H04W74/00

CPC classification number: H04L1/0041 ,  H04L1/0061 ,  H04W74/002 ,  H04W74/0833

Abstract: A method of transmitting and receiving a physical downlink shared channel in a wireless communication system is disclosed. A method of receiving physical downlink shared channels in a terminal which receives downlink data from a plurality of cells simultaneously in a wireless communication system includes receiving the physical downlink shared channel scrambled using a scrambling sequence determined according to same cell ID and same Radio Network Temporary Identity (RNTI) from the plurality of cells.

Abstract translation: 公开了一种在无线通信系统中发送和接收物理下行链路共享信道的方法。 一种在无线通信系统中同时从多个小区接收下行链路数据的终端中接收物理下行链路共享信道的方法包括使用根据相同的小区ID确定的加扰序列和相同的无线电网络临时标识来接收加扰的物理下行链路共享信道 （RNTI）。

公开(公告)号：US09191893B2

公开(公告)日：2015-11-17

申请号：US13700123

申请日：2011-05-25

Applicant: Yu Jin Noh ,  Dae Won Lee ,  Yong Ho Seok

Inventor： Yu Jin Noh ,  Dae Won Lee ,  Yong Ho Seok

IPC: H04W52/02 ,  H04W84/12

CPC classification number: H04B7/0452 ,  H04W4/08 ,  H04W52/0216 ,  H04W52/0235 ,  H04W72/044 ,  H04W84/12 ,  Y02D70/142

Abstract: The present invention relates to a method for operating a power save mode in a wireless LAN system. The method involves transmitting a power save multi-poll (PSMP) frame containing a power save mode (PSM) of a non-access point (AP) station (STA) to a first station and to a second station which are paired with an AP on the basis of multiple input multiple output (MIMO) technology. Information on the PSM contains downlink transmission start offset which indicates the point in time of starting a downlink transmission period, a downlink transmission duration which indicates the duration of the downlink transmission period, and transmission object station identification information. The method further involves transmitting a data frame to the first station and to the second station on the basis of the MIMO technology during the downlink transmission period. The transmission object station identification information indicates a group identifier (group ID) for indicating an object station group including the first station and the second station, which are object stations to which the AP transmits the data frame on the basis of the MIMO technology.

Abstract translation: 本发明涉及一种在无线LAN系统中操作省电模式的方法。 该方法包括将包含非接入点（AP）站（STA）的省电模式（PSM）的省电多轮询（PSMP）帧发送到与AP配对的第一站和第二站 在多输入多输出（MIMO）技术的基础上。 关于PSM的信息包含指示开始下行链路发送期间的时间点的下行链路发送开始偏移，表示下行链路发送期间的持续时间的下行链路发送持续时间，以及发送对象站识别信息。 该方法还包括在下行链路传输周期期间基于MIMO技术将数据帧发送到第一站和第二站。 传输对象站识别信息指示用于指示包括第一站和第二站的目标站组的组标识符（组ID），其是基于MIMO技术的AP发送数据帧的对象站。

公开(公告)号：US09100781B2

公开(公告)日：2015-08-04

申请号：US13808880

申请日：2011-07-18

Applicant: Kyung Soo Woo ,  Su Hwan Lim ,  Chi Jun Ahn ,  Dae Won Lee ,  Suk Hyon Yoon ,  Seung Hee Han

Inventor： Kyung Soo Woo ,  Su Hwan Lim ,  Chi Jun Ahn ,  Dae Won Lee ,  Suk Hyon Yoon ,  Seung Hee Han

IPC: H04W24/00 ,  H04W4/02 ,  G01S5/02 ,  H04L5/00 ,  H04L27/26 ,  H04W64/00

CPC classification number: H04W4/02 ,  G01S5/0205 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0073 ,  H04L27/2613 ,  H04L27/2655 ,  H04W64/00

Abstract: Provided are a method and an apparatus for transmitting a message through a terminal in a wireless communication system. The terminal receives positioning reference signals (PRS) from a reference cell and at least one of the neighbor cells, receives an auxiliary data provision message including a reference cell PRS muting sequence for indicating a muting pattern of the PRS transmitted through the reference cell and a neighbor cell PRS muting sequence for indicating the muting pattern of the PRS transmitted through at least one of the neighbor cells from an enhanced serving mobile location center (E-SMLC), and transmits a reference signal time difference (RSTD) measured on the basis of the PRS received from the reference cell and the at least one of the neighbor cells to the E-SMLC.

Abstract translation: 提供了一种用于在无线通信系统中通过终端发送消息的方法和装置。 终端从参考小区接收定位参考信号（PRS），并且至少一个相邻小区接收辅助数据提供消息，该辅助数据提供消息包括用于指示通过参考小区发送的PRS的静默模式的参考小区PRS静噪序列，以及 相邻小区PRS静音序列，用于指示通过来自增强服务移动定位中心（E-SMLC）的至少一个相邻小区发送的PRS的静噪模式，并发送基于以下内容测量的参考信号时间差（RSTD） PRS从参考小区和至少一个相邻小区接收到E-SMLC。

公开(公告)号：US09078251B2

公开(公告)日：2015-07-07

申请号：US13879794

申请日：2011-10-27

Applicant: Dong Wook Roh ,  Byeong Woo Kang ,  Dae Won Lee ,  Yong Ho Seok

Inventor： Dong Wook Roh ,  Byeong Woo Kang ,  Dae Won Lee ,  Yong Ho Seok

IPC: H04L27/00 ,  H04W52/42 ,  H04W76/04 ,  H04L1/00 ,  H04B7/04 ,  H04B7/06

CPC classification number: H04W72/042 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0697 ,  H04L1/0025 ,  H04L1/0041 ,  H04L2001/0093 ,  H04W52/42 ,  H04W84/12

Abstract: A method of transmitting a data frame by a transmitter in a WLAN system is provided. The method includes generating a data block including at least one data units respectively transmitted through at least one or more spatial streams to at least one receiver, transmitting first control information to the at least one receiver, transmitting second control information to each receiver, and transmitting the data block to the at least one receiver. The first control information includes a length indicator for the data block, a MIMO indicator indicating whether the data block is for SU-MIMO or MU-MIMO, and a spatial stream indication field including information about the number of the spatial streams. The second control information includes a FEC coding field indicating an encoding scheme applied to the data unit and an MCS field indicating an MCS applied to the data unit.

Abstract translation: 提供了一种通过WLAN系统中的发射机发送数据帧的方法。 该方法包括生成包括分别通过至少一个或多个空间流发送到至少一个接收器的至少一个数据单元的数据块，向至少一个接收机发送第一控制信息，向每个接收机发送第二控制信息，并发送 所述数据块到所述至少一个接收器。 第一控制信息包括用于数据块的长度指示符，指示数据块是用于SU-MIMO还是MU-MIMO的MIMO指示符，以及包括关于空间流的数量的信息的空间流指示字段。 第二控制信息包括指示应用于数据单元的编码方案的FEC编码字段和指示应用于数据单元的MCS的MCS字段。

公开(公告)号：US09071400B2

公开(公告)日：2015-06-30

申请号：US13536772

申请日：2012-06-28

Applicant: Seung Deog Choi ,  Ki Jun Kim ,  Suk Hyon Yoon ,  Dae Won Lee ,  Joon Kui Ahn

Inventor： Seung Deog Choi ,  Ki Jun Kim ,  Suk Hyon Yoon ,  Dae Won Lee ,  Joon Kui Ahn

IPC: H04J3/00 ,  H04L5/00 ,  H04L5/14 ,  H04W72/12

CPC classification number: H04W72/042 ,  H04L5/0053 ,  H04L5/0091 ,  H04L5/14 ,  H04W72/0446 ,  H04W72/1278 ,  H04W72/1284 ,  H04W88/08

Abstract: A method of transmitting scheduling information in time-division-duplex (TDD) system is provided. The method comprises configuring a radio frame, the radio frame comprising at least one downlink subframe and at least one uplink subframe, wherein a downlink subframe is reserved for downlink transmission and an uplink subframe is reserved for uplink transmission, and transmitting scheduling information on a downlink control channel in a downlink subframe, the scheduling information comprising an uplink indicator and uplink resource assignment, the uplink indicator indicating which at least one uplink subframe the uplink resource assignment is valid for. Data can be efficiently transmitted by using an uplink indicator which indicates a specific location of a subframe.

Abstract translation: 提供了一种在时分双工（TDD）系统中发送调度信息的方法。 该方法包括配置无线帧，所述无线帧包括至少一个下行链路子帧和至少一个上行链路子帧，其中下行链路子帧被保留用于下行链路传输，并且上行链路子帧被保留用于上行链路传输，并且在下行链路上发送调度信息 控制信道，所述调度信息包括上行链路指示符和上行链路资源分配，所述上行链路指示符指示所述上行链路资源分配对于哪个上行链路子帧是有效的。 可以通过使用指示子帧的特定位置的上行链路指示符来有效地发送数据。