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公开(公告)号：JP2012075122A
公开(公告)日：2012-04-12
申请号：JP2011231788
申请日：2011-10-21
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
CPC classification number: H04B1/69 , H04L5/0007 , H04L5/0048 , H04L25/0226 , H04L25/0232 , H04L27/2647
Abstract: PROBLEM TO BE SOLVED: To provide techniques to perform channel estimation using pilot weighting.SOLUTION: A receiver receives at least one transmission symbol for one transmitted pilot. Each transmission symbol is generated using a single-carrier multiplexing scheme (e.g., IFDMA or LFDMA) or a multi-carrier multiplexing scheme (e.g., OFDMA). An interference estimate is derived on the basis of received pilot values obtained by processing the respective received transmission symbols, and the reliability of the received pilot values is estimated based on the interference estimate. Weights for the received pilot values are estimated on the basis of the transmitted pilot values, the estimated reliability of the received pilot values, and/or other information. A channel estimate is derived on the basis of the received pilot values and the weights. Thereafter, data detection (e.g., equalization) is executed on received data values using the channel estimate.
Abstract translation: 要解决的问题：提供使用导频加权来执行信道估计的技术。 解决方案：接收机接收一个发送的导频的至少一个传输符号。 使用单载波复用方案（例如，IFDMA或LFDMA）或多载波复用方案（例如，OFDMA）生成每个传输符号。 基于通过处理各个接收到的传输符号获得的接收导频值导出干扰估计，并且基于干扰估计来估计接收到的导频值的可靠性。 基于发送的导频值，接收到的导频值的估计可靠性和/或其他信息来估计接收到的导频值的权重。 基于接收到的导频值和权重导出信道估计。 此后，使用信道估计对接收到的数据值执行数据检测（例如，均衡）。 版权所有（C）2012，JPO＆INPIT
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公开(公告)号：JP2012044679A
公开(公告)日：2012-03-01
申请号：JP2011201511
申请日：2011-09-15
Applicant: Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
Inventor： AGRAWAL AVNEESH , CHONG LEE , CAMLANN MOALLEM , JULIAN DAVID JONATHAN , JAIME MANUEL E , DOUGLASS ROBERT KEITH , RU CHAO , GREGORY G ROSE
CPC classification number: H04W76/023 , A61B5/0015 , A61B5/0404 , G01S13/0209 , G01S13/284 , G01S13/765 , H04B5/0031 , H04L63/0861 , H04L67/24 , H04W4/001 , H04W4/02 , H04W4/023 , H04W4/027 , H04W8/005 , H04W12/06
Abstract: PROBLEM TO BE SOLVED: To provide a method that can perform various operations based on distance-related functions associated with two or more devices.SOLUTION: Association procedures may be performed based on a distance-related function associated for two or more devices. Presence management may be based on one or more determined distances. A distance-related function may take various forms including, for example, a distance between devices, two or more distances between devices, a rate of change in a relative distance between devices, relative acceleration between devices, or some combination of two or more of the these distance-related functions.
Abstract translation: 要解决的问题：提供可以基于与两个或更多个设备相关联的距离相关功能来执行各种操作的方法。 解决方案：可以基于与两个或更多个设备相关联的距离相关功能来执行关联过程。 存在管理可以基于一个或多个确定的距离。 距离相关功能可以采取各种形式，包括例如设备之间的距离，设备之间的两个或更多个距离，设备之间的相对距离的变化率，设备之间的相对加速度，或两个或更多个 这些距离相关的功能。 版权所有（C）2012，JPO＆INPIT
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33.发明专利
公开(公告)号：JP2011193484A
公开(公告)日：2011-09-29
申请号：JP2011089956
申请日：2011-04-14
Applicant: Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
Inventor： AGRAWAL AVNEESH , KHANDEKAR AAMOD , SUTIVONG ARAK , GOROKHOV ALEXEI
CPC classification number: H04L27/0008 , H04L27/2627 , H04L27/2649
Abstract: PROBLEM TO BE SOLVED: To provide a method for performing the communication of a frame having two or more modulation schemes in a single system. SOLUTION: Each part of the communication frames having first and second parts has a plurality of subcarriers, and includes a step of modulating at least one subcarrier in the first part by using a first modulation scheme and a step of modulating one or more subcarriers in the second part by using a second modulation scheme different form the first modulation scheme. First type information is transmitted on at least one of the subcarriers in the first part by using the first modulation scheme. Second type information different from the first type information is transmitted on at least one or more of the subcarriers in the second part by using the second modulation scheme. COPYRIGHT: (C)2011,JPO&INPIT
Abstract translation: 要解决的问题：提供一种用于在单个系统中执行具有两个或更多个调制方案的帧的通信的方法。 解决方案：具有第一和第二部分的通信帧的每个部分具有多个子载波，并且包括通过使用第一调制方案来调制第一部分中的至少一个子载波的步骤和调制一个或多个 通过使用与第一调制方案不同的第二调制方案，在第二部分中的子载波。 通过使用第一调制方案，在第一部分中的至少一个子载波上发送第一类型信息。 通过使用第二调制方案，在第二部分中的至少一个或多个子载波上发送与第一类型信息不同的第二类型信息。 版权所有（C）2011，JPO＆INPIT
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34.发明专利Soft handoff with interference cancellation in wireless frequency-hopping communication system 有权在无线频率通信系统中进行干扰消除的软切换
公开(公告)号：JP2011176809A
公开(公告)日：2011-09-08
申请号：JP2011024060
申请日：2011-02-07
Applicant: Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
Inventor： AGRAWAL AVNEESH
CPC classification number: H04L27/2601 , H04B1/715 , H04B2001/7152 , H04W24/00 , H04W28/04 , H04W36/18 , H04W72/04
Abstract: PROBLEM TO BE SOLVED: To provide soft handoff with interference cancellation in a wireless frequency-hopping communication system. SOLUTION: Each sector concurrently supports "non-handoff" users and "soft-handoff" users. A non-handoff user communicates with only one sector and is assigned with information channels by the user's own sector. The soft-handoff user communicates with multiple sectors simultaneously and is assigned with information channels by the user's own "serving" sectors. For each sector, information channels assigned to multiple non-handoff users are orthogonal to one another and not always orthogonal to the multiple information channels assigned to the multiple soft-handoff users. Each sector recovers data transmissions from the non-handoff users and estimates interference made by the multiple non-handoff users and cancels the interference. Each sector further processes signals of its own, which have been processed to cancel the interference, so that the data transmissions from the multiple soft-handoff users may be recovered. COPYRIGHT: (C)2011,JPO&INPIT
Abstract translation: 要解决的问题：在无线跳频通信系统中提供具有干扰消除的软切换。
解决方案：每个扇区同时支持“非切换”用户和“软切换”用户。 非切换用户仅与一个扇区通信，并由用户自己的扇区分配信息信道。 软切换用户同时与多个扇区通信，并由用户自己的“服务”扇区分配信息信道。 对于每个扇区，分配给多个非切换用户的信息信道彼此正交，并且不总是与分配给多个软切换用户的多个信息信道正交。 每个扇区恢复来自非切换用户的数据传输，并估计由多个非切换用户做出的干扰并消除干扰。 每个扇区进一步处理已经被处理以消除干扰的其自己的信号，使得可以恢复来自多个软切换用户的数据传输。 版权所有（C）2011，JPO＆INPIT
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公开(公告)号：JP2011103653A
公开(公告)日：2011-05-26
申请号：JP2010250004
申请日：2010-11-08
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 , KHANDEKAR AAMOD
CPC classification number: H04L25/0226 , H04L5/0007 , H04L5/005 , H04L5/0051 , H04L5/006
Abstract: PROBLEM TO BE SOLVED: To provide a dynamic resource allocation system, apparatus, and method for selectively improving the ability of a receiver to determine a channel estimate value in an Orthogonal Frequency Division Multiple Access (OFDMA) system. SOLUTION: A wireless communication system dynamically allocates channel estimation resources so as to selectively improve the ability of determining a channel estimate value. A receiver sends a request for additional channel estimation resources to a transmitter in the system. The wireless communication system provides the additional channel estimation resources by inserting dedicated pilot channels into one or more of the frequencies allocated to symbols for the receiver. If the receiver is still unable to demodulate received data, the wireless communication system incrementally inserts additional pilot channels in the symbol associated with the receiver. COPYRIGHT: (C)2011,JPO&INPIT
Abstract translation: 要解决的问题：提供一种用于选择性地提高接收机在正交频分多址（OFDMA）系统中确定信道估计值的能力的动态资源分配系统，装置和方法。 解决方案：无线通信系统动态地分配信道估计资源，以选择性地提高确定信道估计值的能力。 接收机向系统中的发射机发送附加信道估计资源的请求。 无线通信系统通过将专用导频信道插入分配给接收机的符号的一个或多个频率来提供附加信道估计资源。 如果接收机仍然不能解调所接收的数据，则无线通信系统递增地在与接收机相关联的符号中插入附加的导频信道。 版权所有（C）2011，JPO＆INPIT
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Patent Agency Ranking36.发明专利Method and apparatus for flexible spectrum allocation in communication system 审中-公开通信系统中灵活频谱分配的方法与装置
公开(公告)号：JP2011019229A
公开(公告)日：2011-01-27
申请号：JP2010158000
申请日：2010-07-12
Applicant: Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
Inventor： GOROKHOV ALEXEI , AGRAWAL AVNEESH
IPC: H04W72/04 , H04B1/713 , H04B7/26 , H04J1/00 , H04J11/00 , H04L5/02 , H04L5/06 , H04L27/26 , H04Q7/36 , H04Q7/38 , H04W72/08
CPC classification number: H04L5/0046 , H04L5/0007 , H04L5/0037 , H04L5/0042 , H04L5/06
Abstract: PROBLEM TO BE SOLVED: To provide a technique for flexible bandwidth allocation that improves interference.SOLUTION: In order to flexibly allocate a shared frequency spectrum to a plurality of users, the spectrum may have a first number of segments, each segment having a second number of clusters associated with a certain sector/cell. The method for flexibly allocating a shared frequency spectrum to a plurality of users includes an act of fixedly assigning a first group of clusters to a first group of users such that the first group of users stays fixed to the assigned clusters, and an act of assigning a second group of clusters to a second group of users such that the second group of users hops within the assigned clusters.
Abstract translation: 要解决的问题：提供一种改善干扰的灵活带宽分配的技术。解决方案：为了向多个用户灵活地分配共享频谱，频谱可以具有第一数量的段，每个段具有第二个数 与某个扇区/单元相关联的簇。 将共享频谱灵活地分配给多个用户的方法包括将第一组群集固定地分配给第一组用户的动作，使得第一组用户保持固定到所分配的群集，以及分配动作 第二组群集到第二组用户，使得第二组用户在分配的群集中跳过。
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公开(公告)号：JP2010252347A
公开(公告)日：2010-11-04
申请号：JP2010113605
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： SUTIVONG ARAK , AGRAWAL AVNEESH
CPC classification number: H04L5/023 , H04B1/7143 , H04J13/00 , H04L5/0023 , H04L5/003 , H04L5/0042
Abstract: PROBLEM TO BE SOLVED: To provide multiplexing for a multicarrier cellular communication system. SOLUTION: For quasi-orthogonal multiplexing in an OFDMA system, multiplex traffic channels are defined for each base station. The traffic channels in each set are orthogonal to one another and can be pseudo-random, with respect to the traffic channels in each of the other sets. The minimum number of sets of channels is used to support a given number of terminals selected for data transmission. Each terminal transmits the data and pilot symbols on its traffic channel. A base station receives data transmissions from all terminals and can perform receiver spatial processing on received symbols with spatial filter matrices to obtain detected data symbols. The spatial filter matrix for each subband can be derived, based on channel response estimates for all terminals transmitting on that subband. COPYRIGHT: (C)2011,JPO&INPIT
Abstract translation: 要解决的问题：提供多载波蜂窝通信系统的复用。 解决方案：对于OFDMA系统中的准正交复用，为每个基站定义复用业务信道。 每组中的业务信道彼此正交，并且相对于其他集合中的每一个的业务信道可以是伪随机的。 通道的最小数量用于支持选定数据传输的给定数量的终端。 每个终端在其业务信道上发送数据和导频符号。 基站从所有终端接收数据传输，并且可以利用空间滤波器矩阵对接收符号执行接收机空间处理，以获得检测到的数据符号。 可以基于在该子带上传输的所有终端的信道响应估计来导出每个子带的空间滤波器矩阵。 版权所有（C）2011，JPO＆INPIT
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公开(公告)号：JP2010213317A
公开(公告)日：2010-09-24
申请号：JP2010096911
申请日：2010-04-20
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
CPC classification number: H04L5/0048 , H04B1/7077 , H04B2201/70701 , H04B2201/70702 , H04L5/0026 , H04L25/0204 , H04L25/03866 , H04L27/2613 , H04L27/2657 , H04L27/2662 , H04L27/2675
Abstract: PROBLEM TO BE SOLVED: To minimize the amount of pilots to be acquired by both base stations and terminals. SOLUTION: A base station transmits a TDM pilot 1 having multiple instances of a pilot-1 sequence generated with a PN1 sequence and a TDM pilot 2 having at least one instance of a pilot-2 sequence generated with a PN2 sequence. Each base station is assigned a specific PN2 sequence that uniquely identifies that base station. A terminal uses TDM pilot 1 to detect the presence of a signal and uses TDM pilot 2 to discriminate base stations and obtain accurate timing. For signal detection, the terminal performs delayed correlation on received samples, performs direct correlation on the received samples with PN1 sequences for K 1 different time offsets and identifies K 2 strongest TDM pilot-1 instances. For time synchronization, the terminal performs direct correlation on the received samples with PN2 sequences to detect TDM pilot 2. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题：最小化由基站和终端获取的导频的数量。 解决方案：基站发送具有由PN1序列生成的导频1序列的多个实例的TDM导频1和具有由PN2序列生成的导频-2序列的至少一个实例的TDM导频2。 为每个基站分配唯一标识该基站的特定PN2序列。 终端使用TDM导频1来检测信号的存在，并使用TDM导频2来区分基站并获得准确的定时。 对于信号检测，终端在接收到的采样上执行延迟相关，对接收到的样本执行与不同时间偏移量的PN1序列的直接相关，并且识别K
2 最强的TDM导频 -1个实例。 对于时间同步，终端对PN2序列的接收样本进行直接相关，以检测TDM导频2.版权所有（C）2010，JPO＆INPIT -
公开(公告)号：JP2010213295A
公开(公告)日：2010-09-24
申请号：JP2010087958
申请日：2010-04-06
Applicant: Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
Inventor： ATTAR RASHID AHMED , BHUSHAN NAGA , AGRAWAL AVNEESH
IPC: H04W74/04 , H04B7/005 , H04B7/26 , H04J1/00 , H04J3/00 , H04J9/00 , H04J11/00 , H04J13/00 , H04J13/02 , H04L5/02 , H04L25/02 , H04L27/26 , H04W72/04 , H04W72/12 , H04W88/02
CPC classification number: H04L5/023
Abstract: PROBLEM TO BE SOLVED: To provide an apparatus and a method, for a data transmission in a communication system, enabling increased data throughput on the reverse link. SOLUTION: An access terminal, which desires a data transmission at a TDMA time intervals, evaluates a reverse link quality measurement criterion of the access terminal and an impatience function of the TDMA time intervals to determine an opportunity level (OL1). The access terminal estimates a data rate enabling transmission for the access terminal itself and generates a data type correspondingly thereto. The access terminal next determines whether rules for transmitting the next value on a packet preparation completed channel are satisfied. If the rules are satisfied, the access terminal communicates the required data rate and the opportunity level with time slots (n) and (n+1) on a packet request (PR) channel. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题：为了提供一种用于在通信系统中进行数据传输的装置和方法，能够提高反向链路上的数据吞吐量。 解决方案：期望以TDMA时间间隔进行数据传输的接入终端评估接入终端的反向链路质量测量标准和TDMA时间间隔的不耐烦功能以确定机会级别（OL1）。 接入终端对接入终端自身的数据速率进行估计，能够进行发送，并生成与其对应的数据类型。 接入终端接下来确定是否满足用于在分组准备完成信道上发送下一个值的规则。 如果规则满足，则接入终端在分组请求（PR）信道上传送所需数据速率和机会级别与时隙（n）和（n + 1）。 版权所有（C）2010，JPO＆INPIT
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40.发明专利Pilot transmission and channel estimation for ofdm system with excess delay spread 有权具有超越延迟扩展的OFDM系统的导频传输和信道估计
公开(公告)号：JP2010183583A
公开(公告)日：2010-08-19
申请号：JP2010036527
申请日：2010-02-22
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
CPC classification number: H04L25/0226 , H04L5/0007 , H04L5/0048 , H04L25/0202 , H04L25/0212 , H04L27/2607 , H04L27/2647
Abstract: PROBLEM TO BE SOLVED: To provide a method of pilot transmission and channel estimation for an OFDM (Orthogonal Frequency Division Multiplexing) system with excess delay spread. SOLUTION: To mitigate the deleterious effects of excess delay spread, the number of pilot subbands is greater than the cyclic prefix length. This "oversampling" may be achieved by using more pilot subbands in each symbol period or different sets of pilot subbands in different symbol periods. First and second groups of received pilot symbols are obtained for first and second symbol periods, respectively, and used to derive first and second frequency response estimates, respectively. First and second impulse response estimates are derived based on the first and second frequency response estimates, respectively, and used to derive a third impulse response estimate having more taps than the number of pilot subbands. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题：提供一种具有超时延扩展的OFDM（正交频分复用）系统的导频传输和信道估计方法。 解决方案：为了减轻超量延迟扩展的有害影响，导频子带数量大于循环前缀长度。 这种“过采样”可以通过在每个符号周期中使用更多的导频子带或在不同的符号周期内使用不同的导频子带集来实现。 分别获得第一和第二符号周期的第一组和第二组接收到的导频符号，并分别用于导出第一和第二频率响应估计。 分别基于第一和第二频率响应估计导出第一和第二脉冲响应估计，并用于导出具有比导频子带数更多的抽头的第三脉冲响应估计。 版权所有（C）2010，JPO＆INPIT
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