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1. 发明授权

US08320273B2 Link adaptation for retransmission schemes 有权
标题翻译：重传方案的链路适配
公开(公告)号：US08320273B2
公开(公告)日：2012-11-27
申请号：US12749920
申请日：2010-03-30
申请人： Hang Jin , Li Guo , Hanqing Lou
发明人： Hang Jin , Li Guo , Hanqing Lou
IPC分类号： H04L12/28 , H04B7/216
CPC分类号： H04L1/0034 , H04L1/0035
摘要： Link adaptive retransmission techniques are provided for use in connection with wireless communications between a first wireless communication device and a second wireless communication device. The first wireless communication device generates M packet error information values for the transmit session of a packet based on whether an acknowledgment message or a non-acknowledgment message is received from the second wireless communication device for a transmission and for previously sent transmissions even if less than M transmissions are sent by the first wireless communication device to the second wireless communication device upon completion of the transmit session. The first wireless communication device computes a retransmission fading margin based on the M packet error information values, from which an effective carrier-to-interference-plus-noise ratio is derived for selection of a modulation scheme.
摘要翻译：链路自适应重传技术被提供用于结合第一无线通信设备和第二无线通信设备之间的无线通信。第一无线通信设备基于是否从第二无线通信设备接收到用于传输的确认消息或非确认消息，以及对于先前发送的传输，即使小于等于，也产生用于分组的发送会话的M个分组错误信息值在发送会话完成时，M个传输由第一无线通信设备发送到第二无线通信设备。第一无线通信设备基于M个分组误差信息值来计算重发衰落余量，从而从其导出用于选择调制方案的有效载波干扰加噪声比。

2. 发明授权

US08306001B2 Dynamic downlink beamforming weight estimation for beamforming-space time code transmissions 有权
标题翻译：用于波束形成空间时间码传输的动态下行链路波束成形加权估计
公开(公告)号：US08306001B2
公开(公告)日：2012-11-06
申请号：US12687181
申请日：2010-01-14
申请人： Genyuan Wang , Li Guo , Hanqing Lou , Hang Jin
发明人： Genyuan Wang , Li Guo , Hanqing Lou , Hang Jin
IPC分类号： H04B7/216
CPC分类号： H04B7/0617 , H04B7/063 , H04W72/046
摘要： Techniques are provided to improve wireless beamformed communication between first and second wireless communication devices. At a plurality of antennas of the first wireless communication device (e.g., a base station) uplink transmissions sent from the second wireless communication device (e.g., a client or mobile device or station) are received. The first wireless communication device generates a downlink beamforming weight vector from received uplink transmissions, and computes a covariance matrix for received uplink transmissions. The first wireless communication device stores history information based on the covariance matrices for received uplink transmissions. The first wireless communication device computes first and second beamforming-space time code weight vectors based on the covariance matrix for an uplink transmission received in a current frame and the history information. The first wireless communication device uses the first and second beamforming-space time code weight vectors for a beamforming-space time code transmission technique to send a downlink transmission to the second wireless communication device.
摘要翻译：提供技术来改善第一和第二无线通信设备之间的无线波束形成的通信。在第一无线通信设备（例如，基站）的多个天线处，从第二无线通信设备（例如，客户机或移动设备或站）发送的上行链路传输被接收。第一无线通信设备从接收到的上行链路传输生成下行链路波束成形加权向量，并且计算用于接收的上行链路传输的协方差矩阵。第一无线通信设备基于接收到的上行链路传输的协方差矩阵存储历史信息。第一无线通信设备基于用于当前帧中接收的上行链路传输的协方差矩阵和历史信息来计算第一和第二波束形成空间时间码权重向量。第一无线通信设备使用波束形成空间时间码传输技术的第一和第二波束形成空间时间码权重向量来向第二无线通信设备发送下行链路传输。

3. 发明授权

US08280426B2 Adaptive power balancing and phase adjustment for MIMO-beamformed communication systems 有权
标题翻译：用于MIMO波束形成通信系统的自适应功率平衡和相位调整
公开(公告)号：US08280426B2
公开(公告)日：2012-10-02
申请号：US12608285
申请日：2009-10-29
申请人： Li Guo , Genyuan Wang , Hanqing Lou , Hang Jin
发明人： Li Guo , Genyuan Wang , Hanqing Lou , Hang Jin
IPC分类号： H04B7/005
CPC分类号： H04W52/42 , H04B7/0413 , H04B7/0617 , H04B7/086
摘要： Techniques are provided for improving performance of a multiple-input multiple-output (MIMO) wireless communication system. At a first wireless communication device (e.g., a base station) having a plurality of antennas, uplink transmissions are received from a second wireless communication device (e.g., a client device). The base station determines a measure of multipath conditions between it and the second wireless communication device based on the received uplink transmissions. The base station applies downlink beamforming weight vectors together with power balance and phase adjustment factors depending on the measure of multipath conditions to transmit multiple downlink data streams across the plurality of antennas simultaneously to the second wireless communication device.
摘要翻译：提供了用于改善多输入多输出（MIMO）无线通信系统的性能的技术。在具有多个天线的第一无线通信设备（例如，基站）处，从第二无线通信设备（例如，客户端设备）接收上行链路传输。基站基于所接收的上行链路传输来确定其与第二无线通信设备之间的多径条件的测量。基站根据多径条件的测量，将多个下行链路数据流同时发送到第二无线通信设备，基站根据功率平衡和相位调整因子来应用下行链路波束成形加权向量。

4. 发明申请

US20110105172A1 Adaptive Power Balancing and Phase Adjustment for MIMO-Beamformed Communication Systems 有权
标题翻译： MIMO-Beamformed通信系统的自适应功率平衡和相位调整
公开(公告)号：US20110105172A1
公开(公告)日：2011-05-05
申请号：US12608285
申请日：2009-10-29
申请人： Li Guo , Genyuan Wang , Hanqing Lou , Hang Jin
发明人： Li Guo , Genyuan Wang , Hanqing Lou , Hang Jin
IPC分类号： H04B7/005
CPC分类号： H04W52/42 , H04B7/0413 , H04B7/0617 , H04B7/086
摘要： Techniques are provided for improving performance of a multiple-input multiple-output (MIMO) wireless communication system. At a first wireless communication device (e.g., a base station) having a plurality of antennas, uplink transmissions are received from a second wireless communication device (e.g., a client device). The base station determines a measure of multipath conditions between it and the second wireless communication device based on the received uplink transmissions. The base station applies downlink beamforming weight vectors together with power balance and phase adjustment factors depending on the measure of multipath conditions to transmit multiple downlink data streams across the plurality of antennas simultaneously to the second wireless communication device.
摘要翻译：提供了用于改善多输入多输出（MIMO）无线通信系统的性能的技术。在具有多个天线的第一无线通信设备（例如，基站）处，从第二无线通信设备（例如，客户端设备）接收上行链路传输。基站基于所接收的上行链路传输来确定其与第二无线通信设备之间的多径条件的测量。基站根据多径条件的测量，将多个下行链路数据流同时发送到第二无线通信设备，基站根据功率平衡和相位调整因子来应用下行链路波束成形加权向量。

5. 发明授权

US08867374B2 Link adaptation for retransmission schemes 有权
标题翻译：重传方案的链路适配
公开(公告)号：US08867374B2
公开(公告)日：2014-10-21
申请号：US13616066
申请日：2012-09-14
申请人： Hang Jin , Li Guo , Hanqing Lou
发明人： Hang Jin , Li Guo , Hanqing Lou
IPC分类号： H04W24/00
CPC分类号： H04L1/0034 , H04L1/0035
摘要： Link adaptive retransmission techniques are provided for use in connection with wireless communications between a first wireless communication device and a second wireless communication device. The first wireless communication device generates M packet error information values for the transmit session of a packet based on whether an acknowledgment message or a non-acknowledgment message is received from the second wireless communication device for a transmission and for previously sent transmissions even if less than M transmissions are sent by the first wireless communication device to the second wireless communication device upon completion of the transmit session. The first wireless communication device computes a retransmission fading margin based on the M packet error information values, from which an effective carrier-to-interference-plus-noise ratio is derived for selection of a modulation scheme.
摘要翻译：链路自适应重传技术被提供用于结合第一无线通信设备和第二无线通信设备之间的无线通信。第一无线通信设备基于是否从第二无线通信设备接收到用于传输的确认消息或非确认消息，以及对于先前发送的传输，即使小于等于，也产生用于分组的发送会话的M个分组错误信息值在发送会话完成时，M个传输由第一无线通信设备发送到第二无线通信设备。第一无线通信设备基于M个分组误差信息值来计算重发衰落余量，从而从其导出用于选择调制方案的有效载波干扰加噪声比。

6. 发明申请

US20110246847A1 Link Adaptation for Retransmission Schemes 有权
标题翻译：链接适应重传方案
公开(公告)号：US20110246847A1
公开(公告)日：2011-10-06
申请号：US12749920
申请日：2010-03-30
申请人： Hang Jin , Li Guo , Hanqing Lou
发明人： Hang Jin , Li Guo , Hanqing Lou
IPC分类号： H04L1/18 , G06F11/14
CPC分类号： H04L1/0034 , H04L1/0035
摘要： Link adaptive retransmission techniques are provided for use in connection with wireless communications between a first wireless communication device and a second wireless communication device. The first wireless communication device generates M packet error information values for the transmit session of a packet based on whether an acknowledgment message or a non-acknowledgment message is received from the second wireless communication device for a transmission and for previously sent transmissions even if less than M transmissions are sent by the first wireless communication device to the second wireless communication device upon completion of the transmit session. The first wireless communication device computes a retransmission fading margin based on the M packet error information values, from which an effective carrier-to-interference-plus-noise ratio is derived for selection of a modulation scheme.
摘要翻译：链路自适应重传技术被提供用于结合第一无线通信设备和第二无线通信设备之间的无线通信。第一无线通信设备基于是否从第二无线通信设备接收到用于传输的确认消息或非确认消息，以及对于先前发送的传输，即使小于等于，也产生用于分组的发送会话的M个分组错误信息值在发送会话完成时，M个传输由第一无线通信设备发送到第二无线通信设备。第一无线通信设备基于M个分组误差信息值来计算重发衰落余量，从而从其导出用于选择调制方案的有效载波干扰加噪声比。

7. 发明申请

US20130003564A1 Link Adaptation for Retransmission Schemes 有权
标题翻译：链接适应重传方案
公开(公告)号：US20130003564A1
公开(公告)日：2013-01-03
申请号：US13616066
申请日：2012-09-14
申请人： Hang Jin , Li Guo , Hanqing Lou
发明人： Hang Jin , Li Guo , Hanqing Lou
IPC分类号： H04W24/00
CPC分类号： H04L1/0034 , H04L1/0035
摘要： Link adaptive retransmission techniques are provided for use in connection with wireless communications between a first wireless communication device and a second wireless communication device. The first wireless communication device generates M packet error information values for the transmit session of a packet based on whether an acknowledgment message or a non-acknowledgment message is received from the second wireless communication device for a transmission and for previously sent transmissions even if less than M transmissions are sent by the first wireless communication device to the second wireless communication device upon completion of the transmit session. The first wireless communication device computes a retransmission fading margin based on the M packet error information values, from which an effective carrier-to-interference-plus-noise ratio is derived for selection of a modulation scheme.
摘要翻译：链路自适应重传技术被提供用于结合第一无线通信设备和第二无线通信设备之间的无线通信。第一无线通信设备基于是否从第二无线通信设备接收到用于传输的确认消息或非确认消息，以及对于先前发送的传输，即使小于等于，也产生用于分组的发送会话的M个分组错误信息值在发送会话完成时，M个传输由第一无线通信设备发送到第二无线通信设备。第一无线通信设备基于M个分组误差信息值来计算重发衰落余量，从而从其导出用于选择调制方案的有效载波干扰加噪声比。

8. 发明申请

US20110124290A1 MIMO Mode Switch Management for Beamformed MIMO Systems 有权
标题翻译：用于波束形成MIMO系统的MIMO模式切换管理
公开(公告)号：US20110124290A1
公开(公告)日：2011-05-26
申请号：US12623932
申请日：2009-11-23
申请人： Hanqing Lou , Li Guo , Genyuan Wang , Hang Jin , Yanxin Na
发明人： Hanqing Lou , Li Guo , Genyuan Wang , Hang Jin , Yanxin Na
IPC分类号： H04B15/00
CPC分类号： H04B7/0689
摘要： Techniques are provided herein for improving multiple-input multiple-output (MIMO) wireless communications, and in particular to dynamically determining when to switch MIMO transmission modes on a communication link between two devices that are capable of supporting multiple MIMO transmission modes. A base station receives from a client device one or more signals containing information representing a first signal-to-noise ratio (SNR) measurement and a second SNR measurement made by the client device. The first SNR measurement is associated with a first MIMO transmission mode and the second SNR measurement is associated with a second MIMO transmission mode. The base station computes a MIMO channel quality indicator from the first SNR measurement and the second SNR measurement, and evaluates the MIMO channel quality indicator to determine whether to switch MIMO transmission modes for transmissions to the client device.
摘要翻译：本文提供了用于改进多输入多输出（MIMO）无线通信的技术，特别是动态地确定何时在能够支持多个MIMO传输模式的两个设备之间的通信链路上切换MIMO传输模式。基站从客户端设备接收包含表示第一信噪比（SNR）测量的信息的一个或多个信号和由客户端设备进行的第二SNR测量。第一SNR测量与第一MIMO传输模式相关联，并且第二SNR测量与第二MIMO传输模式相关联。基站从第一SNR测量和第二SNR测量计算MIMO信道质量指示符，并且评估MIMO信道质量指示符，以确定是否将用于传输的MIMO传输模式切换到客户端设备。

9. 发明申请

US20100238797A1 Adaptive Subchannel Disabling in Beamformed Wireless Communication Systems 有权
标题翻译：波束形无线通信系统中的自适应子信道禁用
公开(公告)号：US20100238797A1
公开(公告)日：2010-09-23
申请号：US12405442
申请日：2009-03-17
申请人： Li Guo , Hanqing Lou , Weiguo Xie , Lin Zeng , Hang Jin
发明人： Li Guo , Hanqing Lou , Weiguo Xie , Lin Zeng , Hang Jin
IPC分类号： G06F11/07
CPC分类号： H04L5/0098 , H04W72/00
摘要： Techniques are provided herein to adaptively and independently disable use of subchannels in transmission sent from a first wireless communication device to a second wireless communication device. The first wireless communication device receives transmission sent to it by the second wireless communication device. The transmissions occupy some or all of a plurality of subchannels within a frequency band that are available for use in the transmission. The transmissions received at the first wireless communication device are evaluated in each subchannel for an over-the-air wireless link between the first wireless communication device and the second wireless communication device. Based on the evaluation, zero or more of the plurality of subchannels are independently disabled in transmissions that are sent by the first wireless communication device to the second wireless communication device.
摘要翻译：本文提供技术来自适应且独立地禁止在从第一无线通信设备发送到第二无线通信设备的传输中使用子信道。第一无线通信设备接收由第二无线通信设备发送给它的传输。传输占用可用于传输的频带内的多个子信道中的一些或全部。在第一无线通信设备接收的传输在每个子信道中被评估用于第一无线通信设备和第二无线通信设备之间的空中无线链路。基于该评估，多个子信道中的零个或更多个在由第一无线通信设备发送到第二无线通信设备的传输中被独立地禁用。

10. 发明授权

US08725084B2 MIMO mode switch management for beamformed MIMO systems 有权
标题翻译：用于波束形成MIMO系统的MIMO模式切换管理
公开(公告)号：US08725084B2
公开(公告)日：2014-05-13
申请号：US12623932
申请日：2009-11-23
申请人： Hanqing Lou , Li Guo , Genyuan Wang , Hang Jin , Yanxin Na
发明人： Hanqing Lou , Li Guo , Genyuan Wang , Hang Jin , Yanxin Na
IPC分类号： H04B7/00
CPC分类号： H04B7/0689
摘要： Techniques are provided herein for improving multiple-input multiple-output (MIMO) wireless communications, and in particular to dynamically determining when to switch MIMO transmission modes on a communication link between two devices that are capable of supporting multiple MIMO transmission modes. A base station receives from a client device one or more signals containing information representing a first signal-to-noise ratio (SNR) measurement and a second SNR measurement made by the client device. The first SNR measurement is associated with a first MIMO transmission mode and the second SNR measurement is associated with a second MIMO transmission mode. The base station computes a MIMO channel quality indicator from the first SNR measurement and the second SNR measurement, and evaluates the MIMO channel quality indicator to determine whether to switch MIMO transmission modes for transmissions to the client device.
摘要翻译：本文提供了用于改进多输入多输出（MIMO）无线通信的技术，特别是动态地确定何时在能够支持多个MIMO传输模式的两个设备之间的通信链路上切换MIMO传输模式。基站从客户端设备接收包含表示第一信噪比（SNR）测量的信息的一个或多个信号和由客户端设备进行的第二SNR测量。第一SNR测量与第一MIMO传输模式相关联，并且第二SNR测量与第二MIMO传输模式相关联。基站从第一SNR测量和第二SNR测量计算MIMO信道质量指示符，并且评估MIMO信道质量指示符，以确定是否将用于传输的MIMO传输模式切换到客户端设备。

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