公开(公告)号：US20130215938A1

公开(公告)日：2013-08-22

申请号：US13856708

申请日：2013-04-04

Applicant: Broadcom Corporation

Inventor： Christopher J. Hansen ,  Carlos H. Aldana ,  Joonsuk Kim

IPC: H04B7/04

CPC classification number: H04B7/0417 ,  H04B7/0426 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0634 ,  H04B7/0663 ,  H04B7/0689 ,  H04B7/0691 ,  H04L1/0001 ,  H04L1/0025 ,  H04L1/0028 ,  H04L1/0029 ,  H04L1/06 ,  H04L1/0681 ,  H04L1/0693

Abstract: A method and system for frame formats for MIMO channel measurement exchange is provided. Aspects of a method for communicating information in a communication system may comprise transmitting data via a plurality of radio frequency (RF) channels utilizing a plurality of transmitting antenna, receiving feedback information via at least one of a plurality of RF channels, and modifying a transmission mode based on the feedback information. Aspects of a method for communicating information in a communication system may also comprise receiving data via a plurality of receiving antenna, transmitting feedback information via at least one of the plurality of RF channels, and requesting modification of a transmission mode for the received data in transmitted response messages comprising the feedback information.

Abstract translation: 提供了一种用于MIMO信道测量交换的帧格式的方法和系统。 用于在通信系统中传送信息的方法的方面可以包括利用多个发射天线经由多个射频（RF）信道发送数据，经由多个RF信道中的至少一个接收反馈信息，以及修改传输 模式基于反馈信息。 用于在通信系统中传送信息的方法的方面还可以包括经由多个接收天线接收数据，经由多个RF信道中的至少一个RF信道发送反馈信息，并请求修改发送的接收数据的传输模式 响应消息包括反馈信息。

公开(公告)号：US08515444B1

公开(公告)日：2013-08-20

申请号：US12175696

申请日：2008-07-18

Applicant: Subir Varma ,  Durga Prasad Satapathy

Inventor： Subir Varma ,  Durga Prasad Satapathy

IPC: H04W72/00 ,  H04B7/00

CPC classification number: H04W72/1263 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0019 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0028 ,  H04L1/1867

Abstract: A signal quality feedback slot is periodically allocated to a wireless device in one out of every En frames. The variable n is greater than or equal to zero and less than Nmax. The variable E is an integer greater than one. The variable n is increased if an indicator of RF conditions satisfies a first criteria. The variable n is decreased to a minimum value if a plurality of retry requests from the wireless device satisfy a retry criteria.

Abstract translation: 在每个En帧中的一个中，信号质量反馈时隙被周期性地分配给无线设备。 变量n大于或等于零且小于Nmax。 变量E是大于1的整数。 如果RF条件的指标满足第一准则，则变量n增加。 如果来自无线设备的多个重试请求满足重试标准，则将变量n减小到最小值。

公开(公告)号：US08498192B2

公开(公告)日：2013-07-30

申请号：US11677000

申请日：2007-02-20

Applicant: Naga Bhushan ,  Tamer Kadous ,  Mingxi Fan ,  Yongbin Wei

Inventor： Naga Bhushan ,  Tamer Kadous ,  Mingxi Fan ,  Yongbin Wei

IPC: H04J11/00

CPC classification number: H04L5/1438 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0639 ,  H04J13/0044 ,  H04L1/0002 ,  H04L1/0025 ,  H04L1/0028 ,  H04L1/06 ,  H04L1/1671 ,  H04L1/1812 ,  H04L5/0026 ,  H04L5/0048 ,  H04L5/023 ,  H04L25/0204 ,  H04L25/0206 ,  H04L25/0226 ,  H04L27/2613 ,  H04W28/06 ,  H04W28/18 ,  H04W48/08 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/144 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/444

Abstract: Spatial pilot to support MIMO receivers in a multi-antenna and multi-layer transmission communication system. A first layer pilot for a single layer transmission is repeated across subbands in a first OFDM symbol and the first layer pilot is also repeated offset from the first OFDM symbol in an adjacent second OFDM symbol. Additional transmission layers may also be transmitted each include a separate pilot generated and repeated in the first symbol and repeated offset form the separate pilot in an adjacent second symbol. The first and second OFDM symbols are then transmitted and received to characterize the receive channels.

Abstract translation: 在多天线和多层传输通信系统中支持MIMO接收机的空间导频。 在第一OFDM符号中的子带上重复用于单层传输的第一层导频，并且第一层导频也在邻近的第二OFDM符号中与第一OFDM符号重复偏移。 还可以传输附加的传输层，每个传输层包括在第一符号中生成和重复的单独的导频，并且在相邻的第二符号中从单独的导频重复偏移。 然后发送和接收第一和第二OFDM符号以表征接收信道。

公开(公告)号：US20130089168A1

公开(公告)日：2013-04-11

申请号：US13691459

申请日：2012-11-30

Applicant: Panasonic Corporation

Inventor： Seigo Nakao ,  Daichi Imamura ,  Yoshihiko Ogawa ,  Atsushi Matsumoto ,  Katsuhiko Hiramatsu

IPC: H04L27/00

CPC classification number: H04L5/0057 ,  H04B1/7075 ,  H04J11/0023 ,  H04J13/0062 ,  H04J13/0074 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/1607 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0055 ,  H04L27/00 ,  H04W24/02 ,  H04W72/0413 ,  H04W72/0446

Abstract: It is possible to improve the CQI reception performance even when a delay is caused in a propagation path, a transmission timing error is caused, or a residual interference is generated between cyclic shift amounts of different ZC sequences. For the second symbol and the sixth symbol of the ACK/NACK signal which are multiplexed by RS of CQI, (+, +) or (−, −) is applied to a partial sequence of the Walsh sequence. For RS of CQI transmitted from a mobile station, + is added as an RS phase of the second symbol and − is added as an RS phase of the sixth symbol. A base station (100) receives multiplexed signals of ACK/NACK signals and CQI signals transmitted from a plurality of mobile stations. An RS synthesis unit (119) performs synthesis by aligning the RS phase of CQI.

Abstract translation: 即使在传播路径中引起延迟，引起发送定时误差，或者在不同ZC序列的循环移位量之间产生残留干扰，也可以提高CQI接收性能。 对于由CQI的RS复用的ACK / NACK信号的第二符号和第六符号，（+，+）或（ - ， - ）被应用于沃尔什序列的部分序列。 对于从移动站发送的CQI的RS，将+作为第二符号的RS相位相加，并且作为第六符号的RS相加。 基站（100）接收从多个移动台发送的ACK / NACK信号和CQI信号的复用信号。 RS合成单元（119）通过对齐CQI的RS相位进行合成。

公开(公告)号：US08416677B2

公开(公告)日：2013-04-09

申请号：US12966246

申请日：2010-12-13

Applicant: Marcos C. Tzannes ,  Dongjun Lee ,  Todor Cooklev ,  Colin Lanzl

Inventor： Marcos C. Tzannes ,  Dongjun Lee ,  Todor Cooklev ,  Colin Lanzl

IPC: H04L5/16

CPC classification number: H04W24/02 ,  H04L1/0028 ,  H04L1/1671 ,  H04L5/0055 ,  H04L5/0094 ,  H04L5/1438 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2607 ,  H04L27/2649 ,  H04L69/24 ,  H04W24/08 ,  H04W28/04 ,  H04W28/06 ,  H04W28/18 ,  H04W28/22 ,  H04W84/12

Abstract: Messages transmitted between a receiver and a transmitter are used to maximize a communication data rate. In particular, a multicarrier modulation system uses messages that are sent from the receiver to the transmitter to exchange one or more sets of optimized communication parameters. The transmitter then stores these communication parameters and when transmitting to that particular receiver, the transmitter utilizes the stored parameters in an effort to maximize the data rate to that receiver. Likewise, when the receiver receives packets from that particular transmitter, the receiver can utilize the stored communication parameters for reception.

Abstract translation: 在接收机和发射机之间传输的消息用于最大化通信数据速率。 具体地，多载波调制系统使用从接收机发送到发射机的消息来交换一组或多组优化的通信参数。 然后，发射机存储这些通信参数，并且当发送到该特定接收机时，发射机利用所存储的参数来努力最大化到该接收机的数据速率。 类似地，当接收机从该特定发射机接收分组时，接收机可以利用存储的通信参数进行接收。

公开(公告)号：US08411615B2

公开(公告)日：2013-04-02

申请号：US12943182

申请日：2010-11-10

Applicant: Tae-Chul Hong ,  Kunseok Kang ,  Do-Seob Ahn ,  Ho-Jin Lee

Inventor： Tae-Chul Hong ,  Kunseok Kang ,  Do-Seob Ahn ,  Ho-Jin Lee

IPC: H04B7/185

CPC classification number: H04B7/18543 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0021 ,  H04L1/0026 ,  H04L1/0028 ,  H04W52/262 ,  H04W52/58

Abstract: A power controlled adaptive modulation and coding (AMC) scheme in a satellite communications system includes: calculating, by a user terminal, a received signal-to-noise ratio (SNR) through a packet received from a base station; removing a power control level applied to a packet received before the received packet from the calculated received SNR, and deciding the value obtained by decreasing the calculated received SNR by the power control level; deciding an AMC mode based on the decided received SNR; determining whether power control is required, and deciding a required power control magnitude depending on a channel state positioned in the AMC mode range; transmitting the decided AMC mode and the decided power control information to the base station through channel quality indicator (CQI) feedback; and applying the AMC mode based on information received, and increasing a power by a power control magnitude decided from the received information.

Abstract translation: 卫星通信系统中的功率控制自适应调制和编码（AMC）方案包括：由用户终端通过从基站接收的分组来计算接收信噪比（SNR）; 从所计算的接收到的SNR中去除应用于在接收到的分组之前接收到的分组的功率控制电平，以及通过将所计算的接收SNR减小所获得的值来确定功率控制电平; 基于所确定的接收到的SNR来决定AMC模式; 确定是否需要功率控制，以及根据位于AMC模式范围内的信道状态来确定所需的功率控制幅度; 通过信道质量指示符（CQI）反馈将决定的AMC模式和决定的功率控制信息发送到基站; 以及基于所接收的信息应用AMC模式，并且通过从所接收的信息确定的功率控制量来增加功率。

公开(公告)号：US08406326B2

公开(公告)日：2013-03-26

申请号：US12779106

申请日：2010-05-13

Applicant: Jung-Fu Cheng ,  Dennis Hui ,  Kambiz Zangi ,  Leonid Krasny

Inventor： Jung-Fu Cheng ,  Dennis Hui ,  Kambiz Zangi ,  Leonid Krasny

IPC: H04K1/10

CPC classification number: H04W72/0413 ,  H04L1/0019 ,  H04L1/0028 ,  H04L1/20 ,  H04W72/042

Abstract: The required bitrate for reporting channel state information from a network transceiver to the network is dramatically reduced, while maintaining fidelity of channel estimates, by exploiting prior channel estimates and the time correlation of channel response. For a selected set of sub-carriers, the transceiver estimates channel frequency response from pilot signals. The transceiver also predicts the frequency response for each selected sub-carrier, by multiplying a state vector comprising prior frequency response estimate and a coefficient vector comprising linear predictive coefficients. The predicted frequency response is subtracted from the estimated frequency response, and the prediction error is quantized and transmitted to the network. The network maintains a corresponding state vector and predictive coefficient vector, and also predicts a frequency response for each selected sub-carrier. The received prediction error is inverse quantized and subtracted from the predicted frequency response to yield a frequency response corresponding to that estimated at the transceiver.

Abstract translation: 通过利用先前的信道估计和信道响应的时间相关性，可以显着降低从网络收发器向网络报告信道状态信息所需的比特率，同时保持信道估计的保真度。 对于所选择的一组子载波，收发器估计来自导频信号的信道频率响应。 收发器还通过将包括先前频率响应估计的状态向量和包括线性预测系数的系数向量相乘来预测每个所选子载波的频率响应。 从估计的频率响应中减去预测的频率响应，并将预测误差量化并发送到网络。 网络维持相应的状态向量和预测系数向量，并且还预测每个选择的子载波的频率响应。 接收的预测误差被反量化，并从预测的频率响应中减去，以产生与在收发机处估计的频率响应相对应的频率响应。

公开(公告)号：US20130070704A1

公开(公告)日：2013-03-21

申请号：US13646460

申请日：2012-10-05

Applicant: Moon Il LEE ,  Hyun Soo KO ,  Bin Chul IHM ,  Wook Bong LEE ,  Jae Hoon CHUNG ,  Jin Young CHUN

Inventor： Moon Il LEE ,  Hyun Soo KO ,  Bin Chul IHM ,  Wook Bong LEE ,  Jae Hoon CHUNG ,  Jin Young CHUN

IPC: H04W72/04

CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/0634 ,  H04B7/0636 ,  H04B7/0639 ,  H04B7/0665 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/0072 ,  H04L1/0618 ,  H04L1/1664 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0053 ,  H04L25/06 ,  H04L27/2607 ,  H04W72/0413 ,  H04W72/042

Abstract: A method for efficiently transmitting and receiving downlink control information is disclosed. The method includes, at a base station, receiving feedback information including a precoding matrix index (PMI) from a user equipment (UE) and transmitting precoding information having a predetermined bit number according to the number of antenna ports and a transmission mode of the base station. The precoding information of a predetermined transmission mode in the precoding information includes confirmation information indicating that the base station uses a PMI which is recently received from the UE.

公开(公告)号：US08352631B2

公开(公告)日：2013-01-08

申请号：US12595948

申请日：2008-01-24

Applicant: Sean Cai ,  Ling Xu

Inventor： Sean Cai ,  Ling Xu

IPC: G06F15/16 ,  H04B7/00 ,  H04B3/36 ,  H04L27/00

CPC classification number: H04L1/0028 ,  H04L5/0053 ,  H04L5/0094

Abstract: A method for improving transmission efficiency of physical layer attributes in a wireless communication system is proposed, and the method comprises the following steps of: (a) defining one or more sets of physical layer channel basic attributes that must be supported, and each set being respectively represented by a value of a domain of attributes, that is, a value of Profile; (b) a transmitting apparatus sending a physical layer channel description information, wherein the value of Profile is used to represent the physical layer channel basic attributes supported by the apparatus; (c) after receiving the channel description information, based on the value of Profile within the information, a receiving apparatus judging whether a set of physical layer channel basic attributes corresponding to the value is supported.

Abstract translation: 提出一种提高无线通信系统物理层属性传输效率的方法，该方法包括以下步骤：（a）定义必须支持的一组或多组物理层信道基本属性， 分别由属性域的值表示，即Profile的值; （b）发送设备，发送物理层信道描述信息，其中，所述配置文件的值用于表示所述设备支持的物理层信道基本属性; （c）在接收到信道描述信息之后，基于信息内的简档的值，接收装置判断是否支持与该值相对应的一组物理层信道基本属性。

公开(公告)号：US08345566B2

公开(公告)日：2013-01-01

申请号：US12540655

申请日：2009-08-13

Applicant: Hwa-Sun You ,  Hee-Won Kang ,  Jae-Hee Cho ,  Sang-Heon Kim

Inventor： Hwa-Sun You ,  Hee-Won Kang ,  Jae-Hee Cho ,  Sang-Heon Kim

IPC: H04J1/16

CPC classification number: H04W72/04 ,  H04L1/0028 ,  H04L5/0007 ,  H04L5/0017 ,  H04L5/0042 ,  H04L5/0057 ,  H04L5/0064 ,  H04L27/2626 ,  H04L27/2647

Abstract: An apparatus and method for transmitting and receiving information through a fast feedback channel in a broadband wireless communications system are provided. The apparatus includes a generator for generating a quasi-orthogonal signal stream corresponding to a codeword to be fed back, a plurality of mappers for mapping the quasi-orthogonal signal stream to a plurality of bundles in the fast feedback channel by using different mapping patterns, and a transmitter for transmitting the quasi-orthogonal signal stream mapped to the plurality of bundles.

Abstract translation: 提供了一种通过宽带无线通信系统中的快速反馈信道发送和接收信息的装置和方法。 该装置包括用于产生与要反馈的码字相对应的准正交信号流的发生器，用于通过使用不同映射模式将准正交信号流映射到快速反馈信道中的多个束的多个映射器， 以及用于发送映射到所述多个束的准正交信号流的发射机。