公开(公告)号：US20050245197A1

公开(公告)日：2005-11-03

申请号：US11165080

申请日：2005-06-23

Applicant: Tamer Kadous ,  Ivan Fernandez-Corbaton

Inventor： Tamer Kadous ,  Ivan Fernandez-Corbaton

IPC: H04J15/00 ,  H04B7/005 ,  H04B7/06 ,  H04J11/00 ,  H04L1/00 ,  H04L1/16 ,  H04L1/20 ,  H04L12/56 ,  H04Q1/00 ,  H04W24/00 ,  H04W28/22 ,  H04W52/26 ,  H04B7/00 ,  G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H03C1/62 ,  H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04B17/00 ,  H04J1/16 ,  H04J3/14 ,  H04K1/10 ,  H04L12/26 ,  H04L25/08 ,  H04L27/28 ,  H04Q7/20

CPC classification number: H04W28/22 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0071 ,  H04L1/0675 ,  H04L1/16 ,  H04L1/20 ,  H04L25/0204 ,  H04L27/2626 ,  H04L27/2647 ,  H04W24/00 ,  H04W52/26

Abstract: Techniques and apparatuses to determine a set of rates for a set of data streams to be transmitted in a multi-channel communication system. A group of transmission channels to be used for each data stream is initially identified. An equivalent system for each group is then defined to have an AWGN (or flat) channel and a spectral efficiency equal to the average spectral efficiency of the transmission channels in the group. A metric for each group is then derived based on the associated equivalent system, e.g., set to the SNR needed by the equivalent system to support the average spectral efficiency. A rate for each data stream is then determined based on the metric associated with the data stream. The rate is deemed to be supported by the communication system if the SNR required to support the data rate by the communication system is less than or equal to the metric.

Abstract translation: 确定要在多通道通信系统中传输的一组数据流的速率集合的技术和装置。 最初识别要用于每个数据流的一组传输信道。 然后将每个组的等效系统定义为具有等于组中传输信道的平均频谱效率的AWGN（或平坦）信道和频谱效率。 然后基于相关联的等效系统导出每个组的度量，例如，设置为等效系统所需的SNR以支持平均频谱效率。 然后基于与数据流相关联的度量来确定每个数据流的速率。 如果由通信系统支持数据速率所需的SNR小于或等于该度量，则该速率被认为是由通信系统支持的。

公开(公告)号：US20050157807A1

公开(公告)日：2005-07-21

申请号：US11038675

申请日：2005-01-19

Applicant: Dong-Hee Shim ,  Hee-Joung Lee ,  Kang-Suk Huh

Inventor： Dong-Hee Shim ,  Hee-Joung Lee ,  Kang-Suk Huh

IPC: H04J99/00 ,  H04B7/02 ,  H04B7/04 ,  H04B7/06 ,  H04L1/00 ,  H04L1/02 ,  H04L1/06

CPC classification number: H04B7/0691 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0615 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0673 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0625 ,  H04L1/0675

Abstract: Disclosed is a method for transmitting a signal in a mobile communications system using a plurality of transmit/receive antennas. A method for transmitting a signal in accordance with an embodiment of the present invention comprises the steps of: a receiving end's calculating a signal to interference noise ratio (SINR) with respect to every antenna pairs configuring STTD pairs to be transmittable from a transmitting end; feedbacking information indicating an antenna pair having the greatest SINR to the transmitting end; and the transmitting end's performing a D-STTD transmission through the antenna pair determined by the feedbacked information. A method for transmitting a signal in accordance with another embodiment of the present invention comprises the steps of: a receiving end's feedbacking information of an antenna pair and/or an eigenvector (weight vector) of a channel matrix with respect to transmit antennas included in the space-time multiplexing (STTD) pair to a transmitting end; and the transmitting end's forming beam by multiplying a symbol with respect to each STTD pair by the eigenvector, and thereafter transmitting the beam through each transmit antenna (in case of using two antennas) or a transmit antenna pair (in case of using more than four antennas) determined by the information of the antenna pair.

Abstract translation: 公开了一种使用多个发射/接收天线在移动通信系统中发送信号的方法。 根据本发明的实施例的用于发送信号的方法包括以下步骤：接收端相对于构成可从发送端发送的STTD对的每个天线对来计算信噪比（SINR）; 指示具有最大SINR的天线对的反馈信息发送到发送端; 并且发送端通过由所反馈的信息确定的天线对执行D-STTD传输。 根据本发明的另一实施例的用于发送信号的方法包括以下步骤：接收端对天线对的反馈信息和/或信道矩阵的特征向量（权重向量）相对于包括在 空时复用（STTD）对发送端; 和发送端的形成光束，通过将符号相对于每个STTD对乘以特征向量，然后通过每个发射天线（在使用两个天线的情况下）或发射天线对（在使用多于四个的情况下发送） 天线）由天线对的信息确定。

公开(公告)号：US11791927B2

公开(公告)日：2023-10-17

申请号：US17201189

申请日：2021-03-15

Applicant: COMCAST CABLE COMMUNICATIONS, LLC

Inventor： Ross Gilson ,  William Carroll VerSteeg ,  Lawrence Wolcott

IPC: H04L1/00 ,  H04L1/06 ,  H04L1/20 ,  H04L41/12 ,  H04L43/0817 ,  G01R31/50 ,  G01R31/08

CPC classification number: H04L1/00 ,  G01R31/086 ,  G01R31/50 ,  H04L1/0675 ,  H04L1/206 ,  H04L41/12 ,  H04L43/0817

Abstract: System and methods for locating events and/or devices on a network are described.

公开(公告)号：US11728931B2

公开(公告)日：2023-08-15

申请号：US17741032

申请日：2022-05-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ruixiang Ma ,  Yongxia Lyu

IPC: H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04L1/06 ,  H04L1/1812 ,  H04L1/1867

CPC classification number: H04L1/0643 ,  H04L1/0675 ,  H04L1/1819 ,  H04L1/1896

Abstract: This application provides a communication method and apparatus. A terminal receives from a network device, first indication information indicating N sets of information of feedback time, each of the N sets comprises at least one piece of information of feedback time, each of the at least one piece of information of feedback time indicates a quantity of time units comprised in a feedback time of a data block. The terminal receives downlink control information (DCI) from the network device, wherein the DCI comprises second indication information indicating first information of feedback time of the data block, and the first information of feedback time belongs to a first set of information of feedback time, and the first set is one of the N sets. The terminal sends the response message for the data block to the network device based on the second indication information and the first indication information.

公开(公告)号：US20190246405A1

公开(公告)日：2019-08-08

申请号：US16384478

申请日：2019-04-15

Applicant: BlackBerry Limited

Inventor： Wen Tong ,  Ming Jia ,  Jianming WU ,  Dong-Sheng Yu ,  Peiying Zhu

IPC: H04W72/08 ,  H04W72/06 ,  H04B7/0452 ,  H04L5/00 ,  H04B7/0456 ,  H04W24/08 ,  H04L1/06 ,  H04L1/00 ,  H04B7/06

CPC classification number: H04W72/085 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/0628 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0673 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0675 ,  H04L5/0023 ,  H04L5/0057 ,  H04W24/08 ,  H04W72/06

Abstract: A method and system are provided for scheduling data transmission in a Multiple-Input Multiple-Output (MIMO) system. The MIMO system may comprise at least one MIMO transmitter and at least one MIMO receiver. Feedback from one or more receivers may be used by a transmitter to improve quality, capacity, and scheduling in MIMO communication systems. The method may include generating or receiving information pertaining to a MIMO channel metric and information pertaining to a Channel Quality Indicator (CQI) in respect of a transmitted signal; and sending a next transmission to a receiver using a MIMO mode selected in accordance with the information pertaining to the MIMO channel metric, and an adaptive coding and modulation selected in accordance with the information pertaining to the CQI.

公开(公告)号：US20180026824A1

公开(公告)日：2018-01-25

申请号：US15722591

申请日：2017-10-02

Applicant: APPLE INC.

Inventor： Shiquan WU ,  Wen TONG ,  Leo STRAWCZYNSKI

IPC: H04L27/26 ,  H04L5/00 ,  H04L1/06 ,  H04B7/06 ,  H04L1/00

CPC classification number: H04L27/2646 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0697 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0662 ,  H04L1/0675 ,  H04L5/0007 ,  H04L27/2626 ,  H04L27/2628

Abstract: An adaptable orthogonal frequency-division multiplexing system (OFDM) that uses a multiple input multiple output (MIMO) to having OFDM signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for time diversity transmission based on the result of a comparison between threshold values and at least one of three criteria. The criteria includes a calculation of a smallest eigen value of a frequency channel response matrix and a smallest element of a diagonal of the matrix and a ratio of the largest and smallest eigen values of the matrix.

公开(公告)号：US20170079052A1

公开(公告)日：2017-03-16

申请号：US15360600

申请日：2016-11-23

Applicant: BlackBerry Limited

Inventor： Wen Tong ,  Ming Jia ,  Jianming Wu ,  Dong-Sheng Yu ,  Peiying Zhu

IPC: H04W72/08 ,  H04W72/06 ,  H04L1/00 ,  H04L5/00 ,  H04B7/04

CPC classification number: H04W72/085 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/0628 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0673 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0675 ,  H04L5/0023 ,  H04L5/0057 ,  H04W24/08 ,  H04W72/06

Abstract: A method and system are provided for scheduling data transmission in a Multiple-Input Multiple-Output (MIMO) system. The MIMO system may comprise at least one MIMO transmitter and at least one MIMO receiver. Feedback from one or more receivers may be used by a transmitter to improve quality, capacity, and scheduling in MIMO communication systems. The method may include generating or receiving information pertaining to a MIMO channel metric and information pertaining to a Channel Quality Indicator (CQI) in respect of a transmitted signal; and sending a next transmission to a receiver using a MIMO mode selected in accordance with the information pertaining to the MIMO channel metric, and an adaptive coding and modulation selected in accordance with the information pertaining to the CQI.

Abstract translation: 提供了一种用于在多输入多输出（MIMO）系统中调度数据传输的方法和系统。 MIMO系统可以包括至少一个MIMO发射机和至少一个MIMO接收机。 来自一个或多个接收机的反馈可以被发射机用于改善MIMO通信系统中的质量，容量和调度。 该方法可以包括产生或接收关于MIMO信道度量的信息和关于发射信号的与信道质量指示符（CQI）有关的信息; 以及使用根据与所述MIMO信道度量有关的信息选择的MIMO模式以及根据与所述CQI有关的信息选择的自适应编码和调制，向接收机发送下一个传输。

公开(公告)号：US20150365215A1

公开(公告)日：2015-12-17

申请号：US14837986

申请日：2015-08-27

Applicant: LG ELECTRONICS INC.

Inventor： Bong Hoe KIM ,  Byeong Woo KANG ,  Dae Won LEE ,  Yu Jin NOH ,  Ki Jun KIM ,  Dong Wook ROH

IPC: H04L5/00 ,  H04W72/04 ,  H04B7/04

CPC classification number: H04L5/0051 ,  H04B7/0413 ,  H04B7/0684 ,  H04J13/0003 ,  H04J13/0025 ,  H04J13/10 ,  H04L1/0675 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0035 ,  H04L5/0037 ,  H04L5/0092 ,  H04L27/2613 ,  H04W8/26 ,  H04W72/042

Abstract: The present application discloses a method in which a base station transmits a reference signal sequence in a wireless communication system. In detail, the method comprises the steps of: generating a pseudo-random sequence using a first m-sequence and a second m-sequence; generating the reference signal sequence using the pseudo-random sequence; and transmitting the reference signal to a mobile station via antenna ports different from one another. The second m-sequence has an initial value containing parameters for discriminating reference signal sequences among users.

Abstract translation: 本申请公开了一种基站在无线通信系统中发送参考信号序列的方法。 具体而言，该方法包括以下步骤：使用第一m序列和第二m序列生成伪随机序列; 使用伪随机序列生成参考信号序列; 以及经由彼此不同的天线端口将参考信号发送到移动台。 第二m序列具有初始值，其包含用于在用户之间鉴别参考信号序列的参数。

公开(公告)号：US09088345B2

公开(公告)日：2015-07-21

申请号：US14206976

申请日：2014-03-12

Applicant: BlackBerry Limited

Inventor： Hua Xu ,  Youn Hyoung Heo ,  Zhijun Cai ,  Andrew Mark Earnshaw ,  Mo-Han Fong ,  Sean Michael McBeath ,  Robert Mark Harrison

IPC: H04B1/707 ,  H04B1/69 ,  H04L1/06 ,  H04L1/16 ,  H04J13/00 ,  H04J13/18 ,  H04L1/00 ,  H04B7/06 ,  H04L5/00 ,  H04L27/26 ,  H04J13/16

CPC classification number: H04L1/0668 ,  H04B1/69 ,  H04B7/0678 ,  H04J13/0077 ,  H04J13/18 ,  H04J2013/165 ,  H04J2211/005 ,  H04L1/0009 ,  H04L1/0618 ,  H04L1/0675 ,  H04L1/1671 ,  H04L5/0007 ,  H04L5/0026 ,  H04L5/003 ,  H04L5/0053 ,  H04L5/0094 ,  H04L27/2602 ,  H04W72/0406 ,  H04W72/0413

Abstract: Methods, devices, and systems for the transmission of information in a wireless communication system are disclosed. In one embodiment, a method for the transmission of information in a wireless communication system comprises receiving a downlink message, wherein the downlink message includes a first control channel element; determining a first index using the location of the first control channel element; determining a second index; determining a first orthogonal resource using the first index; determining a second orthogonal resource using the second index; spreading an uplink message using the first orthogonal resource to form a first spread signal; spreading the uplink message using a second orthogonal resource to form a second spread signal; transmitting the first spread signal using a first antenna; and transmitting the second spread signal using a second antenna.

Abstract translation: 公开了用于在无线通信系统中传输信息的方法，设备和系统。 在一个实施例中，一种用于在无线通信系统中传输信息的方法包括：接收下行链路消息，其中所述下行链路消息包括第一控制信道单元; 使用所述第一控制信道单元的位置来确定第一索引; 确定第二指标; 使用所述第一索引确定第一正交资源; 使用所述第二索引确定第二正交资源; 使用所述第一正交资源扩展上行链路消息以形成第一扩展信号; 使用第二正交资源扩展所述上行链路消息以形成第二扩展信号; 使用第一天线发射所述第一扩展信号; 以及使用第二天线发射所述第二扩展信号。

公开(公告)号：US09065646B2

公开(公告)日：2015-06-23

申请号：US12322128

申请日：2009-01-29

Applicant: Kari Pajukoski ,  Esa Tiirola ,  Kari Hooli ,  Timo Lunttila

Inventor： Kari Pajukoski ,  Esa Tiirola ,  Kari Hooli ,  Timo Lunttila

IPC: H04L1/16 ,  H04L5/00 ,  H04L1/06 ,  H04L1/12

CPC classification number: H04W72/0446 ,  H04L1/0675 ,  H04L1/1671 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0057 ,  H04L5/0092 ,  H04L2001/125 ,  H04W72/0406

Abstract: In one exemplary embodiment, a method includes: transmitting a value from an access node towards an apparatus, where the value is indicative of a size of a first portion of an uplink resource block, where the uplink resource block is shared among a plurality of apparatus, where the first portion is specified for transmission of a first type of signaling to the access node, where a second portion of the uplink resource block is specified for transmission of a second type of signaling to the access node; and receiving at least one transmission using at least one of the first portion and the second portion.