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1. 发明申请

US20130188677A1 REDUCED COMPLEXITY BEAM-STEERED MIMO OFDM SYSTEM 有权
标题翻译：减少复杂的波束转向MIMO OFDM系统
公开(公告)号：US20130188677A1
公开(公告)日：2013-07-25
申请号：US13793520
申请日：2013-03-11
申请人： QUALCOMM Incorporated
发明人： Steven J. Howard , John W. Ketchum , Mark S. Wallace , Jay Rodney Walton
IPC分类号： H04B7/04
CPC分类号： H04B7/0421 , H04B7/0634 , H04B7/0639 , H04B7/066 , H04L5/0023 , H04L5/0048 , H04L25/0248 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： Techniques for transmitting data using channel information for a subset of all subcarriers used for data transmission are described. A transmitter station receives channel information for at least one subcarrier that is a subset of multiple subcarriers used for data transmission. The channel information may include at least one transmit steering matrix, at least one set of eigenvectors, at least one channel response matrix, at least one channel covariance matrix, an unsteered pilot, or a steered pilot for the at least one subcarrier. The transmitter station obtains at least one transmit steering matrix for the at least one subcarrier from the channel information and determines a transmit steering matrix for each of the multiple subcarriers. The transmitter station performs transmit steering or beam-steering for each of the multiple subcarriers with the transmit steering matrix for that subcarrier.
摘要翻译：描述了使用用于数据传输的所有子载波的子集的信道信息来发送数据的技术。发射机站接收作为用于数据传输的多个子载波的子集的至少一个子载波的信道信息。信道信息可以包括至少一个发射导向矩阵，至少一组特征向量，至少一个信道响应矩阵，至少一个信道协方差矩阵，非导向导频或用于所述至少一个子载波的导频导频。发射机站从信道信息中获取至少一个子载波的至少一个发射导向矩阵，并确定多个子载波中的每一个的发射导向矩阵。发射台使用该子载波的发射导向矩阵对多个子载波中的每一个进行发射导向或波束导向。

2. 发明授权

US10476560B2 Spatial spreading in a multi-antenna communication system 有权
公开(公告)号：US10476560B2
公开(公告)日：2019-11-12
申请号：US15728407
申请日：2017-10-09
申请人： QUALCOMM Incorporated
发明人： Jay Rodney Walton , Lizhong Zheng , John W. Ketchum , Mark S. Wallace , Steven J. Howard
IPC分类号： H04L1/02 , H04B7/08 , H04B7/0417 , H04B7/06 , H04L1/06 , H04B17/336 , H04B7/0456
摘要： Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND≥1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.

3. 发明授权

US10128920B2 Multi-antenna transmission for spatial division multiple access 有权
公开(公告)号：US10128920B2
公开(公告)日：2018-11-13
申请号：US15405934
申请日：2017-01-13
申请人： QUALCOMM Incorporated
发明人： J. Rodney Walton , John W. Ketchum , John Edward Smee , Mark S. Wallace , Steven J. Howard
IPC分类号： H04B7/04 , H04B17/309 , H04W16/28 , H04B7/06 , H04B7/0408 , H04B7/0426 , H04B7/0417 , H04B7/0413
摘要： An uplink channel response matrix is obtained for each terminal and decomposed to obtain a steering vector used by the terminal to transmit on the uplink. An “effective” uplink channel response vector is formed for each terminal based on its steering vector and its channel response matrix. Multiple sets of terminals are evaluated based on their effective channel response vectors to determine the best set (e.g., with highest overall throughput) for uplink transmission. Each selected terminal performs spatial processing on its data symbol stream with its steering vector and transmits its spatially processed data symbol stream to an access point. The multiple selected terminals simultaneously transmit their data symbol streams via their respective MIMO channels to the access point. The access point performs receiver spatial processing on its received symbol streams in accordance with a receiver spatial processing technique to recover the data symbol streams transmitted by the selected terminals.

4. 发明申请

US20140348258A1 MIMO WLAN SYSTEM 有权
标题翻译： MIMO WLAN系统
公开(公告)号：US20140348258A1
公开(公告)日：2014-11-27
申请号：US14458933
申请日：2014-08-13
申请人： QUALCOMM Incorporated
发明人： Jay Rodney Walton , Mark S. Wallace , John W. Ketchum , Steven J. Howard
IPC分类号： H04B7/04
CPC分类号： H04L5/0048 , H04B7/022 , H04B7/0421 , H04B7/043 , H04B7/0443 , H04B7/0669 , H04B7/0689 , H04B7/0697 , H04B7/0854 , H04B7/0871 , H04L1/0003 , H04L1/0009 , H04L1/0017 , H04L1/0025 , H04L1/0059 , H04L1/0061 , H04L1/0069 , H04L1/0071 , H04L1/0606 , H04L1/0625 , H04L1/0656 , H04L1/08 , H04L1/16 , H04L1/1887 , H04L5/0023 , H04L25/0204 , H04L25/0226 , H04L25/0228 , H04L25/0248 , H04L25/03343 , H04L27/2602 , H04L27/2607 , H04L27/2647 , H04L2025/03414 , H04L2025/03426 , H04W28/20 , H04W28/22 , H04W52/42 , H04W52/50 , H04W72/12 , H04W84/12
摘要： A multiple-access MIMO WLAN system that employs MIMO, OFDM, and TDD. The system (1) uses a channel structure with a number of configurable transport channels, (2) supports multiple rates and transmission modes, which are configurable based on channel conditions and user terminal capabilities, (3) employs a pilot structure with several types of pilot (e.g., beacon, MIMO, steered reference, and carrier pilots) for different functions, (4) implements rate, timing, and power control loops for proper system operation, and (5) employs random access for system access by the user terminals, fast acknowledgment, and quick resource assignments. Calibration may be performed to account for differences in the frequency responses of transmit/receive chains at the access point and user terminals. The spatial processing may then be simplified by taking advantage of the reciprocal nature of the downlink and uplink and the calibration.
摘要翻译：采用MIMO，OFDM和TDD的多接入MIMO WLAN系统。系统（1）使用具有多个可配置传输信道的信道结构，（2）支持基于信道条件和用户终端能力可配置的多种速率和传输模式，（3）采用具有多种类型（4）实现速率，定时和功率控制环路，实现系统正常运行，（5）采用随机接入方式进行系统接入，由用户终端，快速确认和快速的资源分配。可以执行校准以考虑接入点和用户终端处的发射/接收链的频率响应的差异。然后可以通过利用下行链路和上行链路的相互性质和校准来简化空间处理。

5. 发明授权

US08824583B2 Reduced complexity beam-steered MIMO OFDM system 有权
标题翻译：降低复杂度的波束控制MIMO OFDM系统
公开(公告)号：US08824583B2
公开(公告)日：2014-09-02
申请号：US13793520
申请日：2013-03-11
申请人： QUALCOMM Incorporated
发明人： Steven J. Howard , John W. Ketchum , Mark S. Wallace , Jay Rodney Walton
IPC分类号： H04L27/28 , H04B7/06 , H04L25/02 , H04B7/04 , H04L25/03 , H04L5/00
CPC分类号： H04B7/0421 , H04B7/0634 , H04B7/0639 , H04B7/066 , H04L5/0023 , H04L5/0048 , H04L25/0248 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： Techniques for transmitting data using channel information for a subset of all subcarriers used for data transmission are described. A transmitter station receives channel information for at least one subcarrier that is a subset of multiple subcarriers used for data transmission. The channel information may include at least one transmit steering matrix, at least one set of eigenvectors, at least one channel response matrix, at least one channel covariance matrix, an unsteered pilot, or a steered pilot for the at least one subcarrier. The transmitter station obtains at least one transmit steering matrix for the at least one subcarrier from the channel information and determines a transmit steering matrix for each of the multiple subcarriers. The transmitter station performs transmit steering or beam-steering for each of the multiple subcarriers with the transmit steering matrix for that subcarrier.
摘要翻译：描述了使用用于数据传输的所有子载波的子集的信道信息来发送数据的技术。发射机站接收作为用于数据传输的多个子载波的子集的至少一个子载波的信道信息。信道信息可以包括至少一个发射导向矩阵，至少一组特征向量，至少一个信道响应矩阵，至少一个信道协方差矩阵，非导向导频或用于所述至少一个子载波的导频导频。发射机站从信道信息中获取至少一个子载波的至少一个发射导向矩阵，并确定多个子载波中的每一个的发射导向矩阵。发射台使用该子载波的发射导向矩阵对多个子载波中的每一个进行发射导向或波束导向。

6. 发明申请

US20130279614A1 OFDM COMMUNICATION SYSTEM WITH MULTIPLE OFDM SYMBOL SIZES 有权
标题翻译：具有多个OFDM符号尺寸的OFDM通信系统
公开(公告)号：US20130279614A1
公开(公告)日：2013-10-24
申请号：US13920971
申请日：2013-06-18
申请人： QUALCOMM Incorporated
发明人： Jay Rod Walton , John W. Ketchum , Mark Wallace , Steven J. Howard
IPC分类号： H04L5/00
CPC分类号： H04L5/0007 , H04B7/0421 , H04B7/043 , H04B7/0669 , H04B7/0697 , H04B7/0854 , H04L1/0017 , H04L5/0023 , H04L5/0028 , H04L5/0037 , H04L25/0232 , H04L25/0248 , H04L27/2602 , H04W28/20 , H04W52/50 , H04W72/04
摘要： Techniques to use OFDM symbols of different sizes to achieve greater efficiency for OFDM systems. The system traffic may be arranged into different categories (e.g., control data, user data, and pilot data). For each category, one or more OFDM symbols of the proper sizes may be selected for use based on the expected payload size for the traffic in that category. For example, control data may be transmitted using OFDM symbols of a first size, user data may be transmitted using OFDM symbols of the first size and a second size, and pilot data may be transmitted using OFDM symbols of a third size or the first size. In one exemplary design, a small OFDM symbol is utilized for pilot and for transport channels used to send control data, and a large OFDM symbol and the small OFDM symbol are utilized for transport channels used to send user data.
摘要翻译：使用不同大小的OFDM符号来实现OFDM系统更高效率的技术。系统业务可以被布置成不同的类别（例如，控制数据，用户数据和导频数据）。对于每个类别，可以基于该类别中的业务的预期有效载荷大小来选择适当尺寸的一个或多个OFDM符号用于使用。例如，可以使用第一大小的OFDM符号发送控制数据，可以使用第一大小和第二大小的OFDM符号发送用户数据，并且可以使用第三大小或第一大小的OFDM符号来发送导频数据。在一个示例性设计中，小OFDM符号用于导频和用于发送控制数据的传输信道，并且将大OFDM符号和小OFDM符号用于用于发送用户数据的传输信道。

7. 发明申请

US20180048362A1 SPATIAL SPREADING IN A MULTI-ANTENNA COMMUNICATION SYSTEM 审中-公开
公开(公告)号：US20180048362A1
公开(公告)日：2018-02-15
申请号：US15728407
申请日：2017-10-09
申请人： QUALCOMM Incorporated
发明人： Jay Rodney Walton , Lizhong Zheng , John W. Ketchum , Mark S. Wallace , Steven J. Howard
IPC分类号： H04B7/0417 , H04B7/06 , H04L1/06 , H04B7/0456 , H04B17/336
CPC分类号： H04B7/0417 , H04B7/0456 , H04B7/0669 , H04B17/336 , H04L1/06
摘要： Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND≧1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.

8. 发明申请

US20160329936A1 SPATIAL SPREADING IN A MULTI-ANTENNA COMMUNICATION SYSTEM 有权
标题翻译：多天线通信系统中的空间传播
公开(公告)号：US20160329936A1
公开(公告)日：2016-11-10
申请号：US14523450
申请日：2014-10-24
申请人： QUALCOMM Incorporated
发明人： Jay Rodney Walton , Lizhong Zheng , John W. Ketchum , Mark S. Wallace , Steven J. Howard
IPC分类号： H04B7/04 , H04B17/336
CPC分类号： H04B7/0417 , H04B7/0456 , H04B7/0669 , H04B17/336 , H04L1/06
摘要： Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND≧1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.
摘要翻译：在多天线系统中执行空间扩展，以随机化接收实体针对每个发送的数据符号块观察到的“有效”信道。对于MIMO系统，在发送实体处理（例如，编码，交织和调制）数据以获得要在NM传输跨度中发送的ND数据符号块，其中ND≥1和NM> 1。 ND块被划分为NM数据符号子块，每个传输跨度的一个子块。对于每个子块，选择导向矩阵（例如，以确定性或伪随机方式从一组L个导引矩阵中，其中L> 1）。每个数据符号子块用为该子块选择的导引矩阵进行空间处理，以获得在一个传输范围内经由NT个发射天线进一步处理和传输的发射符号。因此，ND数据符号块用NM导引矩阵进行空间处理，并观察信道的集合。

9. 发明授权

US09048892B2 MIMO system with multiple spatial multiplexing modes 有权
标题翻译：具有多空间复用模式的MIMO系统
公开(公告)号：US09048892B2
公开(公告)日：2015-06-02
申请号：US13857025
申请日：2013-04-04
申请人： QUALCOMM Incorporated
发明人： J. Rodney Walton , John W. Ketchum , Mark S. Wallace , Steven J. Howard
IPC分类号： H04B7/04 , H04L25/02 , H04B7/06 , H04B7/08 , H04L1/00 , H04L1/06 , H04W74/04 , H04J11/00 , H04W72/04 , H04L5/00 , H04L27/26 , H04L25/03 , H04W16/28 , H04W52/50
CPC分类号： H04B7/0417 , H04B7/0421 , H04B7/043 , H04B7/0434 , H04B7/0452 , H04B7/0628 , H04B7/0669 , H04B7/0689 , H04B7/0697 , H04B7/0854 , H04B7/0871 , H04J11/003 , H04J11/0053 , H04L1/0001 , H04L1/0003 , H04L1/0009 , H04L1/0017 , H04L1/06 , H04L5/0073 , H04L25/0224 , H04L25/0226 , H04L25/0242 , H04L25/0248 , H04L25/03343 , H04L25/03891 , H04L27/2601 , H04L27/2602 , H04L27/261 , H04L27/2647 , H04L27/2675 , H04W16/28 , H04W52/50 , H04W72/046 , H04W74/04
摘要： A MIMO system supports multiple spatial multiplexing modes for improved performance and greater flexibility. These modes may include (1) a single-user steered mode that transmits multiple data streams on orthogonal spatial channels to a single receiver, (2) a single-user non-steered mode that transmits multiple data streams from multiple antennas to a single receiver without spatial processing at a transmitter, (3) a multi-user steered mode that transmits multiple data streams simultaneously to multiple receivers with spatial processing at a transmitter, and (4) a multi-user non-steered mode that transmits multiple data streams from multiple antennas (co-located or non co-located) without spatial processing at the transmitter(s) to receiver(s) having multiple antennas. For each set of user terminal(s) selected for data transmission on the downlink and/or uplink, a spatial multiplexing mode is selected for the user terminal set from among the multiple spatial multiplexing modes supported by the system.
摘要翻译： MIMO系统支持多种空间复用模式，以提高性能和更大的灵活性。这些模式可以包括（1）在正交空间信道上将多个数据流发送到单个接收机的单用户导向模式，（2）单个用户非导向模式，其将多个数据流从多个天线发送到单个接收机在发射机处没有空间处理，（3）多用户导向模式，其在发射机处通过空间处理同时向多个接收机发送多个数据流，以及（4）多用户非导向模式，其从在具有多个天线的发射机到接收机处没有空间处理的多个天线（共同定位或非共同定位）。对于在下行链路和/或上行链路上选择用于数据传输的每组用户终端，从系统支持的多个空间复用模式中，为用户终端机选择空间复用模式。

10. 发明授权

US11171693B2 Spatial spreading in a multi-antenna communication system 有权
公开(公告)号：US11171693B2
公开(公告)日：2021-11-09
申请号：US16666149
申请日：2019-10-28
申请人： QUALCOMM Incorporated
发明人： Jay Rodney Walton , Lizhong Zheng , John W. Ketchum , Mark S. Wallace , Steven J. Howard
IPC分类号： H04L1/02 , H04B7/08 , H04B7/0417 , H04B7/06 , H04L1/06 , H04B17/336 , H04B7/0456
摘要： Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND≥1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.

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