公开(公告)号：JP2011142654A

公开(公告)日：2011-07-21

申请号：JP2011027351

申请日：2011-02-10

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： AGRAWAL AVNEESH ,  KHANDEKAR AAMOD ,  KADOUS TAMER ,  SAMPATH HEMANTH

IPC: H04J99/00 ,  H04B7/04 ,  H04J11/00

CPC classification number: H04B7/0697 ,  H04L1/0001 ,  H04L1/0006 ,  H04L1/0026 ,  H04L1/1812

Abstract: PROBLEM TO BE SOLVED: To improve throughput and reliability in MIMO wireless network systems.
SOLUTION: A wireless communication apparatus includes: a receiver for receiving a signal from a user device; a demodulator for demodulating the received signal; a processor for analyzing demodulated information for assessing at least one of CQI (Channel Quality Index), rank, transmission schedule, packet format and resource assignment related to the user device; a forward link assignment message (FLAM) generator for appending update information to a signal generated by the processor for transmission to the user device; and a transmitter for transmitting the FLAM to the user device.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提高MIMO无线网络系统的吞吐量和可靠性。 解决方案：无线通信设备包括：接收器，用于从用户设备接收信号; 解调器，用于解调所接收的信号; 用于分析用于评估与用户设备相关的CQI（信道质量指数），秩，传输调度，分组格式和资源分配中的至少一个的解调信息的处理器; 前向链路分配消息（FLAM）生成器，用于将更新信息附加到由处理器生成的信号以传送到用户设备; 以及用于将FLAM发送到用户设备的发射机。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2011130492A

公开(公告)日：2011-06-30

申请号：JP2011028976

申请日：2011-02-14

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： AGRAWAL AVNEESH ,  VIJAYAN RAJIV ,  KADOUS TAMER

IPC: H04B7/00 ,  H04J99/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04J13/18 ,  H04L1/00 ,  H04L1/06 ,  H04W16/28

CPC classification number: H04L1/0618 ,  H04B7/0417 ,  H04B7/0443 ,  H04B7/0465 ,  H04B7/0615 ,  H04B7/0891 ,  H04W52/34 ,  H04W52/42

Abstract: PROBLEM TO BE SOLVED: To provide a technique for transmission scheme that supports spatial multiplexing, provides a transmission diversity, and fully utilizes the available transmission power in MIMO systems. SOLUTION: A rate adaptive transmission scheme for MIMO systems, which transmits a variable number of data symbol streams, provides transmission diversity for each data symbol stream, and fully utilizes the total transmission power of the system and the full power of each antenna. In one method, at least one data symbol stream is received for transmission from a plurality of antennas. Each data symbol stream is scaled with a respective weight corresponding to the amount of transmit power allocated to that stream. The scaled data symbol stream(s) is (are) multiplied with a transmit basis matrix to provide a plurality of transmit symbol streams for the plurality of antennas. The transmit basis matrix (e.g., a Walsh-Hadamard matrix or a DFT matrix) is defined such that each data symbol stream is transmitted from all antennas and each transmit symbol stream is transmitted at (or near) the full power for the associated antenna. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供支持空间复用的传输方案技术，提供传输分集，并充分利用MIMO系统中的可用传输功率。 解决方案：传输可变数量的数据符号流的MIMO系统的速率自适应传输方案为每个数据符号流提供传输分集，并充分利用系统的总传输功率和每个天线的全功率 。 在一种方法中，接收至少一个数据符号流用于从多个天线发射。 每个数据符号流用对应于分配给该流的发射功率的量的相应权重进行缩放。 缩放的数据符号流与发射基矩阵相乘以提供多个天线的多个发射符号流。 定义发射基矩阵（例如，沃尔什 - 哈达玛矩阵或DFT矩阵），使得每个数据符号流从所有天线发送，并且每个发射符号流以（或接近）相关天线的全功率发射。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2011055506A

公开(公告)日：2011-03-17

申请号：JP2010210797

申请日：2010-09-21

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： SUTIVONG ARAK ,  AGRAWAL AVNEESH ,  JULIAN DAVID JONATHAN

IPC: H04W52/18 ,  H04B7/005 ,  H04L1/00 ,  H04L1/20 ,  H04W52/08

CPC classification number: H04L1/0045 ,  H04B17/309 ,  H04L1/0057 ,  H04L1/20 ,  H04W52/125 ,  H04W52/146 ,  H04W52/16 ,  H04W52/20 ,  H04W52/241 ,  H04W52/243 ,  H04W52/247 ,  H04W52/362 ,  H04W52/367 ,  H04W52/54

Abstract: PROBLEM TO BE SOLVED: To provide techniques for performing erasure detection and power control for a transmission without error detection coding. SOLUTION: For erasure detection, a transmitter transmits codewords via a wireless channel. A receiver computes a metric for each received codeword, compares the computed metric against an erasure threshold (316), and declares the received codeword to be "erased" or "non-erased". The receiver dynamically adjusts the transmit power on the basis of whether or not the codewords meet the erasure threshold. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供用于在没有错误检测编码的情况下执行用于传输的擦除检测和功率控制的技术。 解决方案：为了擦除检测，发射机通过无线信道发送码字。 接收机计算每个接收到的码字的度量，将所计算的度量与擦除阈值进行比较（316），并且将所接收的码字声明为“擦除”或“未被擦除”。 接收机根据码字是否满足擦除阈值来动态地调整发射功率。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2011041286A

公开(公告)日：2011-02-24

申请号：JP2010185047

申请日：2010-08-20

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： GORE DHANANJAY ASHOK ,  AGRAWAL AVNEESH ,  KEERTHI ARVIND VIJAY

IPC: H04B1/715 ,  H04B1/713 ,  H04B7/005 ,  H04J1/00 ,  H04J11/00 ,  H04L5/02

CPC classification number: H04B1/7143 ,  H04B1/715 ,  H04B2001/7154 ,  H04L5/023 ,  H04W52/38 ,  H04W52/42 ,  H04W52/44

Abstract: PROBLEM TO BE SOLVED: To provide a method of estimating interference in a wireless communication system.
SOLUTION: Interference may be controlled by selectively blanking or attenuating transmission power. The method of estimating interference caused by a transmitting entity in a wireless communication system includes determining a desired level of accuracy in an interference estimate value, determining a required number of blanks per subband set to achieve the desired level of accuracy, inserting the required number of blanks per subband set into a frequency hopping (FH) sequence, and performing transmission according to the FH sequence.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种估计无线通信系统中的干扰的方法。 解决方案：可以通过选择性地消隐或衰减发射功率来控制干扰。 在无线通信系统中估计由发送实体引起的干扰的方法包括确定干扰估计值中所需的准确度水平，确定每个子带集所需的空白数目以达到期望的准确度水平，插入所需数量的 将每个子带的空白设置为跳频（FH）序列，并根据FH序列进行传输。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2011010282A

公开(公告)日：2011-01-13

申请号：JP2010113601

申请日：2010-05-17

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MANTRAVADI ASHOK ,  MALLADI DURGA PRASAD ,  AGRAWAL AVNEESH ,  STAMOULIS ANASTASIOS

IPC: H04W52/04 ,  H04J11/00 ,  H04W4/06 ,  H04W52/32

CPC classification number: H04L25/0226 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0058 ,  H04L12/189 ,  H04L25/0232 ,  H04L27/2601 ,  H04W52/32

Abstract: PROBLEM TO BE SOLVED: To provide a method and an apparatus for channel estimation in a system employing different transmission protocols as a broadcast/multicast protocol and a unicast protocol, wherein the number of a pilot tone used for broadcast transmission is greater than the number of a pilot tone used for a unicast transmission and quality of a symbol from a broadcast transmission slot is not deteriorated even when the symbol is adjacent to a symbol from a unicast transmission slot.SOLUTION: In the method, it is determined whether a first time-slot (multicast slot) of one transmission protocol is adjacent to a second time-slot (unicast slot) of another transmission protocol or not. The number of pilot power and/or a pilot sub-carrier is/are increased for an edge symbol of the multicast slot for a purpose of channel estimation using the edge symbol.

Abstract translation: 要解决的问题：提供一种在采用不同传输协议作为广播/多播协议和单播协议的系统中的信道估计的方法和装置，其中用于广播传输的导频音的数量大于 用于单播传输的导频音和来自广播传输时隙的符号的质量即使当符号与单播传输时隙中的符号相邻时也不会恶化。解决方案：在该方法中，确定第一时间 - 一个传输协议的时隙（多播时隙）与另一传输协议的第二时隙（单播时隙）相邻。 为了使用边缘符号的信道估计的目的，导频功率和/或导频子载波的数量增加了多播时隙的边缘符号。

公开(公告)号：JP2010273377A

公开(公告)日：2010-12-02

申请号：JP2010166280

申请日：2010-07-23

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： NAGUIB AYMAN FAWZY ,  AGRAWAL AVNEESH

IPC: H04B7/06 ,  H04B7/005 ,  H04B7/04 ,  H04J11/00 ,  H04J99/00 ,  H04L1/00 ,  H04L1/06 ,  H04L25/02 ,  H04L27/26 ,  H04W16/28

CPC classification number: H04B7/0671 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/0673 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0071 ,  H04L1/0618 ,  H04L25/0224 ,  H04L27/2602 ,  H04L27/2607 ,  H04L27/2631 ,  H04L27/2647 ,  H04W52/42

Abstract: PROBLEM TO BE SOLVED: To provide a delay diversity scheme which minimizes the possibility of destructive or constructive addition of channels utilized to provide diversity. SOLUTION: A method for providing transmission diversity comprises: providing, to a first antenna, a first symbol after a first delay period; providing, to the first antenna, a second symbol after a second delay period that is different than the first delay period; and providing, to the first antenna, a third symbol after a third delay period that is different than the first delay period and the second delay period. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种延迟分集方案，其最小化用于提供分集的信道的破坏性或建设性添加的可能性。 解决方案：提供传输分集的方法包括：在第一延迟周期之后向第一天线提供第一符号; 在与所述第一延迟周期不同的第二延迟周期之后向所述第一天线提供第二符号; 以及在与所述第一延迟周期和所述第二延迟周期不同的第三延迟周期之后，向所述第一天线提供第三符号。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010239623A

公开(公告)日：2010-10-21

申请号：JP2010101014

申请日：2010-04-26

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： KHANDEKAR AAMOD ,  AGRAWAL AVNEESH

IPC: H04W72/08 ,  H04J1/00 ,  H04J11/00 ,  H04W16/02 ,  H04W16/12 ,  H04W16/30 ,  H04W72/04

CPC classification number: H04L1/0015 ,  H04L1/0002 ,  H04L1/0006 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/1812 ,  H04L1/20 ,  H04L5/0007 ,  H04L5/0012 ,  H04L5/006 ,  H04L27/2601 ,  H04W16/02 ,  H04W16/12

Abstract: PROBLEM TO BE SOLVED: To provide a rate prediction in a fractional reuse system. SOLUTION: The apparatus and method intended to provide rate prediction is an apparatus and method for rate prediction in a wireless communication system involving fractional frequency reuse. A wireless communication system implementing Orthogonal Frequency Division Multiple Access (OFDMA) implements a fractional frequency reuse plan, in which a fraction of a carrier is allocated to a terminal having no possibility of handoff and another fraction of the carrier is reserved for a terminal having a higher possibility of handoff. The fractions respectively define a reuse set. The terminal is constrained to frequency hop within a reuse set. The terminal is also configured to determine a reuse set based on a present assignment in a subset of the carrier. The terminal determines a channel estimate and a channel quality indicator partially based on at least the present reuse set. The terminal reports the channel quality indicator to a source, which determines a rate based on the index value. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：在分数重用系统中提供速率预测。 解决方案：旨在提供速率预测的装置和方法是涉及分数频率重用的无线通信系统中的速率预测的装置和方法。 实现正交频分多址（OFDMA）的无线通信系统实现了分数频率复用计划，其中将一部分载波分配给不具有切换可能性的终端，另一部分载波被保留用于具有 更高的切换可能性。 分数分别定义重用集合。 终端被限制在重用集合内的跳频。 终端还被配置为基于载波的子集中的当前分配来确定重用集合。 终端至少基于本重用集合来部分地确定信道估计和信道质量指示符。 终端将信道质量指示符报告给源，根据索引值确定速率。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010193480A

公开(公告)日：2010-09-02

申请号：JP2010068754

申请日：2010-03-24

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： GORE DHANANJAY ,  AGRAWAL AVNEESH ,  KADOUS TAMER

IPC: H04J99/00 ,  H04B7/04 ,  H04B7/06 ,  H04J11/00 ,  H04L25/02 ,  H04L27/26

CPC classification number: H04L25/0226 ,  H04B7/0452 ,  H04B7/0684 ,  H04L27/2613

Abstract: PROBLEM TO BE SOLVED: To provide an efficient pilot transmission method for a multi-antenna communication system. SOLUTION: In one pilot transmission scheme, a first set of T scaled pilot symbols is generated with a first training vector and transmitted (e.g., continuously) from T transmission antennas, where T>1. If MIMO receiver(s) are to be supported by the system, then at least (T-1) additional sets of T scaled pilot symbols are generated with at least (T-1) additional training vectors and transmitted from the T transmit antennas. The training vectors are for different (e.g., orthogonal) spatial directions. Each MISO receiver can estimate its MISO channel based on the first set of scaled pilot symbols. Each MIMO receiver can estimate its MIMO channel based on the first and additional sets of scaled pilot symbols. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于多天线通信系统的有效的导频传输方法。 解决方案：在一个导频传输方案中，用第一训练向量生成第一组T比例导频符号，并从T个发射天线发射（例如，连续地），其中T> 1。 如果MIMO接收机将被系统支持，则至少（T-1）个额外的T比例导频符号集合至少使用（T-1）个附加训练向量并从T个发射天线发送。 训练矢量用于不同的（例如正交的）空间方向。 每个MISO接收机可以基于第一组缩放的导频符号来估计其MISO信道。 每个MIMO接收机可以基于第一个和额外的缩放导频符号集来估计其MIMO信道。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2010045793A

公开(公告)日：2010-02-25

申请号：JP2009193532

申请日：2009-08-24

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： JI TINGFANG ,  AGRAWAL AVNEESH ,  TEAGUE EDWARD H

IPC: H04W16/10 ,  H04W72/08 ,  H04W16/02 ,  H04W16/12 ,  H04W72/04

CPC classification number: H04W16/12 ,  H04W16/02 ,  H04W72/0453 ,  H04W72/082

Abstract: PROBLEM TO BE SOLVED: To provide a method of efficiently reducing interference between cells. SOLUTION: For restrictive reuse, each cell (or each sector) is assigned (1) a set of usable subbands that may be allocated to users in the cell and (2) a set of forbidden subbands that is not used. The usable and forbidden sets for each cell are orthogonal to one other. The usable set for each cell partially overlaps the forbidden set for each neighboring cell. If a user (u) observes/causes high level of interference from/to a neighboring cell (y), then the user (u) may be allocated subbands from a "restricted" set containing subbands included in both the usable set for a cell (x) and the forbidden set for a cell (y). The user (u) would then observe/cause no interference from/to cell (y). The subband restriction may be extended to avoid interference from multiple neighboring cells. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种有效降低小区间干扰的方法。 解决方案：对于限制性重用，分配每个单元（或每个扇区）（1）可以分配给单元中的用户的一组可用子带，以及（2）未使用的一组禁止子带。 每个单元的可用和禁止的集合彼此正交。 每个单元的可用集合部分地与每个相邻小区的禁止集合重叠。 如果用户（u）观察/引起来自相邻小区（y）的高水平的干扰，那么可以从包含用于小区的可用集合中的子带的“受限制”集合向用户（u）分配子带 （x）和单元格（y）的禁止集合。 用户（u）然后将观察/不引起来自小区（y）的干扰。 可以扩展子带限制以避免来自多个相邻小区的干扰。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2013258724A

公开(公告)日：2013-12-26

申请号：JP2013150978

申请日：2013-07-19

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MANTRAVADI ASHOK ,  MALLADI DURGA PRASAD ,  AGRAWAL AVNEESH ,  ANASTASIOS STAMOULIS

IPC: H04W52/04 ,  H04J1/00 ,  H04J11/00 ,  H04W4/06 ,  H04W28/18 ,  H04W52/32

CPC classification number: H04L25/0226 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0058 ,  H04L12/189 ,  H04L25/0232 ,  H04L27/2601 ,  H04W52/32

Abstract: PROBLEM TO BE SOLVED: To provide a method and apparatus for channel estimation in a system employing differing transmission protocols as broadcast/multicast and unicast protocols.SOLUTION: The number of pilot tones used for a broadcast transmission is greater than the number of pilot tones used for a unicast transmission. The channel estimation may be significantly degraded when a symbol from a broadcast transmission slot is adjacent to a symbol from a unicast transmission slot. Therefore, it is determined whether a first time slot of one transmission protocol (multicast slot) is adjacent to a second time slot of another transmission protocol (unicast slot). The pilot power and/or the number of the pilot sub-carriers are/is increased for the edge symbol of the multicast slot for purposes of channel estimation using the edge symbol.

Abstract translation: 要解决的问题：提供在采用不同传输协议作为广播/多播和单播协议的系统中的信道估计的方法和装置。解决方案：用于广播传输的导频音的数量大于使用的导频音数 用于单播传输。 当来自广播传输时隙的符号与来自单播传输时隙的符号相邻时，信道估计可能会显着恶化。 因此，确定一个传输协议（多播时隙）的第一时隙是否与另一传输协议（单播时隙）的第二时隙相邻。 为了使用边缘符号进行信道估计的目的，导频子载波的导频功率和/或导频子载波的数量增加用于多播时隙的边缘符号。