公开(公告)号：US20120294255A1

公开(公告)日：2012-11-22

申请号：US13522483

申请日：2010-08-18

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

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

IPC: H04W72/08

CPC classification number: H04B7/0452 ,  H04B7/0421 ,  H04B7/0621 ,  H04L5/0053 ,  H04W84/12

Abstract: A link adaptation method performed by a station (STA) in a wireless local area network (LAN) system supporting multi-user multiple-input multiple-output (MU-MIMO) is provided. The method includes: receiving a modulation and coding scheme (MCS) request, a steered sounding physical layer convergence procedure (PLOP) protocol data unit (PPDU) which is beam-formed to the STA, and a MIMO indicator including MU-MIMO-related information from an access point (AP); and transmitting feedback information including an MCS acquired from the steered sounding PPDU and the MU-MIMO-related information to the AP in response to the MCS request.

Abstract translation: 提供了一种由支持多用户多输入多输出（MU-MIMO）的无线局域网（LAN）系统中的站（STA）执行的链路自适应方法。 该方法包括：接收调制编码方案（MCS）请求，对STA进行波束形成的转向探测物理层融合过程（PLOP）协议数据单元（PLDU）以及包含MU-MIMO相关的MIMO指示符 来自接入点（AP）的信息; 以及响应于所述MCS请求，向所述AP发送包括从所述转向探测PPDU获得的MCS和所述MU-MIMO相关信息的反馈信息。

公开(公告)号：US20120287901A1

公开(公告)日：2012-11-15

申请号：US13553493

申请日：2012-07-19

Applicant: Joon Kui AHN ,  Bong Hoe KIM ,  Young Woo YUN ,  Ki Jun KIM ,  Jung Hoon LEE ,  Dae Won LEE ,  Dong Youn SEO ,  Dong Wook ROH ,  Suk Hyon YOON

Inventor： Joon Kui AHN ,  Bong Hoe KIM ,  Young Woo YUN ,  Ki Jun KIM ,  Jung Hoon LEE ,  Dae Won LEE ,  Dong Youn SEO ,  Dong Wook ROH ,  Suk Hyon YOON

IPC: H04W72/04

CPC classification number: H04W72/0446 ,  H04L1/16 ,  H04L1/1861 ,  H04L5/0053 ,  H04L27/2613 ,  H04W72/02

Abstract: A method for a user equipment (UE) to receive a PDCCH (physical downlink control channel) transmitted from a base station via a specific resource region includes receiving a PBCH (physical broadcast channel) including first system information and PHICH (physical hybrid ARQ indicator channel) related information from the base station and receiving the PDCCH transmitted from the base station via the specific resource region for downlink control information.

Abstract translation: 用户设备（UE）经由特定资源区域从基站接收PDCCH（物理下行链路控制信道）的方法包括：接收包括第一系统信息和PHICH（物理混合ARQ指示符信道）的PBCH（物理广播信道） ）相关信息，并且经由用于下行链路控制信息的特定资源区域接收从基站发送的PDCCH。

公开(公告)号：US20120269136A1

公开(公告)日：2012-10-25

申请号：US13143293

申请日：2010-01-04

Applicant: Dong Youn Seo ,  Jae Hoon Chung ,  Yeong Hyeon Kwon ,  Dae Won Lee ,  Ki Jun Kim ,  Seung Hee Han

Inventor： Dong Youn Seo ,  Jae Hoon Chung ,  Yeong Hyeon Kwon ,  Dae Won Lee ,  Ki Jun Kim ,  Seung Hee Han

IPC: H04W72/04 ,  H04J11/00

CPC classification number: H04L27/2621 ,  H04B1/713 ,  H04J13/0074 ,  H04L5/001 ,  H04L5/0037

Abstract: A method for performing a wireless communication between a UE and a BS in a wireless communication system supporting a first UE using a single frequency band and a second UE using a plurality of frequency bands, to each of which OFDM is applied, is disclosed. The method includes being allocated one or more downlink component carriers for the second UE from the BS, and receiving the one or more downlink component carriers from the BS by the second UE. The one or more down-link component carriers are cyclically shifted by different cyclic shift values and the cyclic shifting is performed by multiplying each of the one or more downlink component carriers by a linear phase having a different inclination.

Abstract translation: 公开了一种用于在支持使用单个频带的第一UE的无线通信系统中的UE与BS之间进行无线通信的方法，以及使用多个频带的每个OFDM应用OFDM的方法。 该方法包括从BS向第二UE分配一个或多个下行链路分量载波，以及由第二UE从BS接收一个或多个下行链路分量载波。 一个或多个下行链路分量载波被循环移位不同的循环移位值，并且通过将一个或多个下行链路分量载波中的每一个乘以具有不同倾斜度的线性相位来执行循环移位。

公开(公告)号：US20120230443A1

公开(公告)日：2012-09-13

申请号：US13509277

申请日：2010-11-12

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

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

IPC: H04L27/28

CPC classification number: H04B7/0452 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0632 ,  H04B7/0663 ,  H04L25/0224 ,  H04W84/12

Abstract: A Multi-User-Multiple Input Multiple Output (MU-MIMO) transmission method performed by an AP in a Wireless Local Area Network (WLAN) system is provided. The method includes transmitting an MU-MIMO initiation message to a destination STA which is a target of a MU-MIMO transmission, the MU-MIMO initiation message informing that MU-MIMO transmission will be initiated, receiving a sounding frame transmitted by the destination STA as a response to the MU-MIMO initiation message and performing MU-MIMO transmission on data by beamforming based on channel information obtained from the sounding frame. The sounding frame includes precoded and virtualized channel information Hvirtual between the AP and the STA. A dimension of the Hvirtual is lower than a dimension of channel information H between the AP and the STA.

Abstract translation: 提供了一种由无线局域网（WLAN）系统中的AP执行的多用户多输入多输出（MU-MIMO）传输方法。 该方法包括向作为MU-MIMO传输的目标的目的地STA发送MU-MIMO发起消息，通知MU-MIMO传输将被发起的MU-MIMO发起消息，接收目的STA发送的探测帧 作为对MU-MIMO发起消息的响应，并且基于从发现帧获得的信道信息，通过波束成形对数据执行MU-MIMO传输。 探测帧包括在AP和STA之间的虚拟的预编码和虚拟化信道信息。 Hvirtual的维度低于AP和STA之间的信道信息H的维度。

公开(公告)号：US08259776B2

公开(公告)日：2012-09-04

申请号：US12585649

申请日：2009-09-21

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

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

IPC: H04B1/00

CPC classification number: H04L5/0023 ,  H04L1/0625 ,  H04L1/0643 ,  H04L5/0044 ,  H04L5/0048

Abstract: An STBC based signal transmission method considering the number of symbols within a slot. In transmitting a signal using two or more transmission antennas in a mobile communication system using a structure in which one subframe includes two slots and each slot includes a plurality of symbols, transmission symbols are paired in units of two consecutive symbols within each subframe by an STBC scheme. The transmission symbols are mapped to a frequency region in units of slots and the mapped transmission symbols are transmitted. One symbol within a slot in which the number of symbols excluding symbols for transmitting a reference signal is an odd number is not paired by the STBC scheme.

Abstract translation: 考虑在一个时隙内的符号数量的基于STBC的信号传输方法。 在使用其中一个子帧包括两个时隙并且每个时隙包括多个符号的结构的移动通信系统中发送使用两个或更多个发送天线的信号时，发送符号以每个子帧内的两个连续符号的单位被STBC 方案。 发送符号以时隙为单位映射到频率区域，并且发送映射的发送符号。 其中除了用于发送参考信号的符号之外的符号的数目是奇数的时隙内的一个符号不被STBC方案配对。

公开(公告)号：US20120218983A1

公开(公告)日：2012-08-30

申请号：US13505409

申请日：2011-06-28

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

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

IPC: H04W84/12

CPC classification number: H04W72/0446 ,  H04B7/0452 ,  H04W28/20 ,  H04W72/04 ,  H04W72/0406 ,  H04W74/0808 ,  H04W84/12 ,  H04W88/02 ,  H04W88/08

Abstract: A method of transmitting a data frame in a wireless local area network is provided. The method includes TXOP the step of: obtaining a transmission opportunity (TXOP) indicating a time interval during which a transmitter has a right to transmit at least one data frame and an available bandwidth for the TXOP and sequentially transmitting a plurality of data frames to at least one receiver during the TXOP, wherein a bandwidth of a subsequent data frame of the plurality of data frames is same to or narrower than a bandwidth of a preceding data frame of the plurality of data frames which is last previously transmitted before the subsequent data frame.

Abstract translation: 提供了一种在无线局域网中发送数据帧的方法。 该方法包括以下步骤：获得指示发送机具有发送至少一个数据帧的权利和TXOP的可用带宽的时间间隔的发送机会（TXOP），并且将多个数据帧顺序发送到 所述TXOP期间的至少一个接收机，其中所述多个数据帧中的后续数据帧的带宽与所述多个数据帧中的先前数据帧的带宽相同或更小，所述先前数据帧的最后先前在所述后续数据帧之前传输 。

公开(公告)号：US20120201318A1

公开(公告)日：2012-08-09

申请号：US13502102

申请日：2010-10-15

Applicant: Han Byul Seo ,  Eun Sun Kim ,  Byoung Hoon Kim ,  Hak Seong Kim ,  Dae Won Lee

Inventor： Han Byul Seo ,  Eun Sun Kim ,  Byoung Hoon Kim ,  Hak Seong Kim ,  Dae Won Lee

IPC: H04L27/28 ,  H04W88/04 ,  H04W88/08

CPC classification number: H04L5/0048 ,  H04B7/155 ,  H04L5/0023 ,  H04L27/2607

Abstract: An apparatus and method for transmitting and receiving a demodulation reference signal (DM RS) are disclosed. A method for controlling a base station (BS) to transmit a demodulation reference signal (Demodulation RS or DM RS) in a wireless communication system includes transmitting, by the base station (BS), a DM RS for a relay node (RN) to the relay node (RN) through a specific backhaul subframe to which an extended cyclic prefix (CP) is applied. The DM RS is transmitted over two resource elements (REs) of individual subcarriers having subcarrier frequency indexes 2, 5, 8 and 11 in a frequency axis within a second slot of the specific backhaul subframe.

Abstract translation: 公开了一种用于发送和接收解调参考信号（DM RS）的装置和方法。 用于控制在无线通信系统中发送解调参考信号（解调RS或DM RS）的基站（BS）的方法包括：由基站（BS）向中继节点（RN）发送用于中继节点（RN）的DM RS 中继节点（RN）通过应用了扩展循环前缀（CP）的特定回程子帧。 在特定回程子帧的第二时隙内的频率轴上，通过具有子载波频率索引2,5,8和11的各个子载波的两个资源元素（RE）发送DM RS。

公开(公告)号：US20120170533A1

公开(公告)日：2012-07-05

申请号：US13394669

申请日：2010-09-08

Applicant: Joon Kui Ahn ,  Min Gyu Kim ,  Dae Won Lee ,  Suck Chel Yang ,  Bong Hoe Kim ,  Dong Youn Seo

Inventor： Joon Kui Ahn ,  Min Gyu Kim ,  Dae Won Lee ,  Suck Chel Yang ,  Bong Hoe Kim ,  Dong Youn Seo

IPC: H04W52/14 ,  H04W72/04

CPC classification number: H04W52/146 ,  H04B7/0689 ,  H04L5/0055 ,  H04L5/0057 ,  H04W52/325 ,  H04W52/42 ,  H04W72/0413 ,  H04W72/0473 ,  H04W76/27

Abstract: A method and apparatus of controlling transmit power in a wireless communication system is provided. A wireless apparatus selects one transmit mode among a plurality of transmit modes, and determines the transmit power on the basis of the selected transmit mode. The wireless apparatus transmits an uplink channel by using the transmit power.

Abstract translation: 提供了一种在无线通信系统中控制发射功率的方法和装置。 无线装置在多个发送模式中选择一个发送模式，并且基于所选择的发送模式来确定发送功率。 无线装置利用发送功率发送上行信道。

公开(公告)号：US20120155414A1

公开(公告)日：2012-06-21

申请号：US13391222

申请日：2010-09-15

Applicant: Yu Jin Noh ,  Dong Wook Roh ,  Joon Kui Ahn ,  Byeong Woo Kang ,  Dae Won Lee ,  Bong Hoe Kim ,  Eun Sun Kim

Inventor： Yu Jin Noh ,  Dong Wook Roh ,  Joon Kui Ahn ,  Byeong Woo Kang ,  Dae Won Lee ,  Bong Hoe Kim ,  Eun Sun Kim

IPC: H04W72/04

CPC classification number: H04L5/0023 ,  H04B7/0417 ,  H04L1/0026 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0057 ,  H04L5/0073 ,  H04L5/0082 ,  H04L5/1469 ,  H04L25/0226 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting a downlink reference signal in a wireless communication system that supports multiple antennas. A method for transmitting channel state information-reference signals (CSI-RS) for two or more antenna ports according to one embodiment of the present invention comprises the steps of: mapping the CSI-RSs for the two or more antenna ports in predetermined patterns on a data region of a downlink subframe: an transmitting the downlink subframe mapped with the CSI-RSs for the two or more antenna ports, wherein the predetermined patterns are defined as patterns differing by a cell, and the different patterns may be defined as the predetermined patterns being shifted in a temporal range, frequency range, or a temporal range and a frequency range.

Abstract translation: 无线通信系统技术领域本发明涉及一种无线通信系统，更具体地，涉及一种在支持多个天线的无线通信系统中发送下行链路参考信号的方法和装置。 根据本发明的一个实施例的用于发送用于两个或多个天线端口的信道状态信息参考信号（CSI-RS）的方法包括以下步骤：将预定模式中的两个或更多天线端口的CSI-RS映射到 下行链路子帧的数据区域：发送与两个或更多个天线端口的CSI-RS映射的下行链路子帧，其中预定模式被定义为由小区不同的模式，并且不同的模式可以被定义为预定的 模式在时间范围，频率范围或时间范围和频率范围内移动。

公开(公告)号：US20120140753A1

公开(公告)日：2012-06-07

申请号：US13307774

申请日：2011-11-30

Applicant: Dae Won LEE ,  Ill Soo Sohn ,  Yong Ho Seok

Inventor： Dae Won LEE ,  Ill Soo Sohn ,  Yong Ho Seok

IPC: H04W92/00

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 a channel sounding procedure; 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. The each of the plurality of segment frames includes a first-segment subfield indicating whether the each of the plurality of feedback segment 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公告（NDPA）帧以发起信道探测过程; 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。 多个段帧中的每一个包括指示所包括的多个反馈段中的每一个是否为第一段的第一段子字段和指示剩余反馈段的数目的剩余段子字段。