公开(公告)号：US08611453B2

公开(公告)日：2013-12-17

申请号：US13428784

申请日：2012-03-23

申请人： Syed Aon Mujtaba ,  Xiaowen Wang

发明人： Syed Aon Mujtaba ,  Xiaowen Wang

IPC分类号： H04B7/02

CPC分类号： H04B7/0417 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/068 ,  H04B7/0689 ,  H04L1/0016

摘要： A Channel Quality Indicator table for wireless multiple input multiple output (MIMO) networks is disclosed. In one embodiment, a method of generating a table for channel quality indicator (CQI) for an open loop MIMO transmission includes calculating performance of a link between a transmitter and a user end unit for each MIMO transmission mode over a range of average signal-to-noise ratio, and selecting the MIMO transmission mode that maximizes performance for each subset of the range of average signal-to-noise ratio. The method further includes storing the selected MIMO transmission mode and the corresponding subset of the range of average signal-to-noise ratio in a CQI table, the CQI table being stored in an user end unit and a base transceiver station of the open loop MIMO network.

摘要翻译： 公开了一种用于无线多输入多输出（MIMO）网络的信道质量指标表。 在一个实施例中，生成用于开环MIMO传输的信道质量指示符（CQI）的表的方法包括：在平均信号到平均信号的范围内，针对每个MIMO传输模式来计算发射机和用户端单元之间的链路的性能 并且选择使平均信噪比范围的每个子集的性能最大化的MIMO传输模式。 该方法还包括将所选择的MIMO传输模式和平均信噪比范围的对应子集存储在CQI表中，该CQI表被存储在开环MIMO的用户端单元和基站中 网络。

公开(公告)号：US20130260758A1

公开(公告)日：2013-10-03

申请号：US13631640

申请日：2012-09-28

申请人： Wen Zhao ,  Xiaowen Wang ,  Vinay Majjigi ,  Paul Flynn ,  Kee-Bong Song ,  Tarik Tabet ,  Youngjae Kim ,  Syed Aon Mujtaba ,  Christian Mucke

发明人： Wen Zhao ,  Xiaowen Wang ,  Vinay Majjigi ,  Paul Flynn ,  Kee-Bong Song ,  Tarik Tabet ,  Youngjae Kim ,  Syed Aon Mujtaba ,  Christian Mucke

IPC分类号： H04W36/14

CPC分类号： H04W36/14 ,  H04W56/0045 ,  H04W76/16 ,  H04W76/25 ,  H04W76/27

摘要： Methods and apparatus for synchronizing operational state during hybrid network operation. In one embodiment, the various access technologies that makeup the hybrid network not fully synchronized. Thus, a wireless device operating in a mixed mode must be capable of managing synchronization across multiple access technologies. The wireless device is configured to estimate an expected “tune-away” period when disengaging with a one access technology to address events (for example, link maintenance, calls, data, and the like) or perform monitoring on a second access technology. The estimate is then used by the device to adjust its operational parameters on the technology from which it is tuning away. This ensures smooth switching away from and back to the various network technologies.

摘要翻译： 混合网络运行期间同步运行状态的方法和装置。 在一个实施例中，组合混合网络的各种接入技术未完全同步。 因此，以混合模式操作的无线设备必须能够跨多个接入技术来管理同步。 无线设备被配置为在使用一种接入技术来解决事件（例如，链路维护，呼叫，数据等）或在第二接入技术上执行监控时，估计预期的“调离”时段。 然后，设备使用该估计来调整其调谐技术的操作参数。 这确保了平滑地切换远离各种网络技术。

公开(公告)号：US20090202014A1

公开(公告)日：2009-08-13

申请号：US12186368

申请日：2008-08-05

申请人： Syed Aon Mujtaba ,  Xiaowen Wang

发明人： Syed Aon Mujtaba ,  Xiaowen Wang

IPC分类号： H04B7/02

CPC分类号： H04B7/0413 ,  H04B7/0417 ,  H04B7/0669 ,  H04B7/068 ,  H04B7/0888 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0017 ,  H04L1/0054 ,  H04L1/0625

摘要： A method of the multiple input multiple output feedback is disclosed. In accordance with an embodiment of the invention, the multiple input multiple output feedback method includes a receiver receiving a reference signal from a base station and calculating a signal to interference and noise ratio from the received reference signal. The method further includes determining a modulation and coding scheme based on the signal to interference and noise ratio and a receiver type.

摘要翻译： 公开了一种多输入多输出反馈的方法。 根据本发明的实施例，多输入多输出反馈方法包括接收来自基站的参考信号的接收机，并根据接收到的参考信号计算信噪比。 该方法还包括基于信号与干扰和噪声比确定调制和编码方案以及接收机类型。

公开(公告)号：US07366250B2

公开(公告)日：2008-04-29

申请号：US11122147

申请日：2005-05-04

申请人： Syed Aon Mujtaba ,  Xiaowen Wang

发明人： Syed Aon Mujtaba ,  Xiaowen Wang

IPC分类号： H04B7/02

CPC分类号： H04L25/0206 ,  H04B7/0613 ,  H04B7/12 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/2628

摘要： Methods and apparatus are provided for improved efficiency in an extended multiple antenna communication system. A multiplier is employed on the number of points in the FFT that is greater than the multiplier on the frequency (bandwidth) of the legacy 802.11 a/g system. In one exemplary implementation, a 256 point FFT is employed in 40 MHz (with a 4N multiplier on the number of possible tones and a 2N multiplier on the frequency). While the efficiency for the OFDM symbol is improved, additional overhead is required in the preamble training (the length of the preamble is proportional to the number of tones in the FFT). Thus, a number of preamble constructs are provided that couple the improved efficiency with shorter preambles. In addition, an improved tone design provides additional efficiency gains.

摘要翻译： 提供了用于在扩展的多天线通信系统中提高效率的方法和装置。 FFT中的点数大于传统802.11 a / g系统的频率（带宽）乘数的乘数。 在一个示例性实现中，在40MHz中采用256点FFT（对于可能音调的数量具有4N乘法器，并且在频率上具有2N乘法器）。 虽然改进了OFDM符号的效率，但在前同步码训练中需要额外的开销（前导码的长度与FFT中的音调数成正比）。 因此，提供了许多前导码结构，其将改进的效率与较短的前导码相结合。 此外，改进的音调设计提供了额外的效率增益。

公开(公告)号：US08855257B2

公开(公告)日：2014-10-07

申请号：US12186368

申请日：2008-08-05

申请人： Syed Aon Mujtaba ,  Xiaowen Wang

发明人： Syed Aon Mujtaba ,  Xiaowen Wang

IPC分类号： H04B7/10 ,  H04L1/06 ,  H04L1/00 ,  H04B7/04 ,  H04B7/06

CPC分类号： H04B7/0413 ,  H04B7/0417 ,  H04B7/0669 ,  H04B7/068 ,  H04B7/0888 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0017 ,  H04L1/0054 ,  H04L1/0625

摘要： A method of the multiple input multiple output feedback is disclosed. In accordance with an embodiment of the invention, the multiple input multiple output feedback method includes a receiver receiving a reference signal from a base station and calculating a signal to interference and noise ratio from the received reference signal. The method further includes determining a modulation and coding scheme based on the signal to interference and noise ratio and a receiver type.

摘要翻译： 公开了一种多输入多输出反馈的方法。 根据本发明的实施例，多输入多输出反馈方法包括接收来自基站的参考信号的接收机，并根据接收到的参考信号计算信噪比。 该方法还包括基于信号与干扰和噪声比确定调制和编码方案以及接收机类型。

公开(公告)号：US20120182899A1

公开(公告)日：2012-07-19

申请号：US13428784

申请日：2012-03-23

申请人： Syed Aon Mujtaba ,  Xiaowen Wang

发明人： Syed Aon Mujtaba ,  Xiaowen Wang

IPC分类号： H04B17/00 ,  H04W88/10 ,  H04W24/00

CPC分类号： H04B7/0417 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/068 ,  H04B7/0689 ,  H04L1/0016

摘要： A Channel Quality Indicator table for wireless multiple input multiple output (MIMO) networks is disclosed. In one embodiment, a method of generating a table for channel quality indicator (CQI) for an open loop MIMO transmission includes calculating performance of a link between a transmitter and a user end unit for each MIMO transmission mode over a range of average signal-to-noise ratio, and selecting the MIMO transmission mode that maximizes performance for each subset of the range of average signal-to-noise ratio. The method further includes storing the selected MIMO transmission mode and the corresponding subset of the range of average signal-to-noise ratio in a CQI table, the CQI table being stored in an user end unit and a base transceiver station of the open loop MIMO network.

摘要翻译： 公开了一种用于无线多输入多输出（MIMO）网络的信道质量指标表。 在一个实施例中，生成用于开环MIMO传输的信道质量指示符（CQI）的表的方法包括：在平均信号到平均信号的范围内，针对每个MIMO传输模式来计算发射机和用户端单元之间的链路的性能 并且选择使平均信噪比范围的每个子集的性能最大化的MIMO传输模式。 该方法还包括将所选择的MIMO传输模式和平均信噪比范围的对应子集存储在CQI表中，该CQI表被存储在开环MIMO的用户端单元和基站中 网络。

公开(公告)号：US08619907B2

公开(公告)日：2013-12-31

申请号：US11043025

申请日：2005-01-24

申请人： Syed Aon Mujtaba ,  Xiaowen Wang

发明人： Syed Aon Mujtaba ,  Xiaowen Wang

IPC分类号： H04L27/00

CPC分类号： H04B7/0667 ,  H04B7/0684

摘要： Methods and apparatus are provided for communicating data in a multiple antenna communication system having N transmit antennas. According to one aspect of the invention, a header format includes a legacy preamble having at least one legacy long training field and an extended portion having at least N additional long training fields on each of the N transmit antennas. The N additional long training fields may be tone interleaved across the N transmit antennas and are used for MIMO channel estimation. The extended portion may include a short training field for power estimation. The short training field may be tone interleaved across the N transmit antennas and have an extended duration to support beam steering.

摘要翻译： 提供了用于在具有N个发射天线的多天线通信系统中传送数据的方法和装置。 根据本发明的一个方面，报头格式包括具有至少一个传统长训练场的传统前导码和在N个发射天线中的每一个上具有至少N个附加的长训练场的扩展部分。 N个附加的长训练场可以在N个发射天线之间进行音调交织，并用于MIMO信道估计。 扩展部分可以包括用于功率估计的短训练场。 短训练场可以在N个发射天线之间进行音调交织，并具有延长的持续时间以支持波束转向。

公开(公告)号：US20090245408A1

公开(公告)日：2009-10-01

申请号：US12249739

申请日：2008-10-10

申请人： Syed Aon Mujtaba ,  Xiaowen Wang

发明人： Syed Aon Mujtaba ,  Xiaowen Wang

IPC分类号： H04B7/02

CPC分类号： H04B7/0417 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/068 ,  H04B7/0689 ,  H04L1/0016

摘要： A Channel Quality Indicator table for wireless multiple input multiple output (MIMO) networks is disclosed. In one embodiment, a method of generating a table for channel quality indicator (CQI) for an open loop MIMO transmission includes calculating performance of a link between a transmitter and a user end unit for each MIMO transmission mode over a range of average signal-to-noise ratio, and selecting the MIMO transmission mode that maximizes performance for each subset of the range of average signal-to-noise ratio. The method further includes storing the selected MIMO transmission mode and the corresponding subset of the range of average signal-to-noise ratio in a CQI table, the CQI table being stored in an user end unit and a base transceiver station of the open loop MIMO network.

摘要翻译： 公开了一种用于无线多输入多输出（MIMO）网络的信道质量指标表。 在一个实施例中，生成用于开环MIMO传输的信道质量指示符（CQI）的表的方法包括：在平均信号到平均信号的范围内，针对每个MIMO传输模式来计算发射机和用户端单元之间的链路的性能 并且选择使平均信噪比范围的每个子集的性能最大化的MIMO传输模式。 该方法还包括将所选择的MIMO传输模式和平均信噪比范围的相应子集存储在CQI表中，该CQI表被存储在开环MIMO的用户端单元和基站中 网络。

公开(公告)号：US08964522B2

公开(公告)日：2015-02-24

申请号：US11572450

申请日：2005-09-09

申请人： Syed Aon Mujtaba ,  Xiaowen Wang

发明人： Syed Aon Mujtaba ,  Xiaowen Wang

IPC分类号： H04W48/08 ,  H04B7/06 ,  H04B7/10 ,  H04L5/02 ,  H04L27/26 ,  H04W48/16 ,  H04W84/12

CPC分类号： H04B7/0669 ,  H04B7/0684 ,  H04B7/10 ,  H04L5/023 ,  H04L27/2602 ,  H04W48/08 ,  H04W48/16 ,  H04W84/12

摘要： Methods and apparatus are provided for communicating pseudo-orthogonal pilot tones in a multiple antenna communication system. Data is transmitted in a multiple antenna communication system having N transmit antennas by generating a number of pilot tones for each of the N transmit antennas, wherein the pilot tones for each of the N transmit antennas are pseudo-orthogonal with each other; and transmitting the data on each of the N transmit antennas. The pilot tones are generally embedded in the data. Data is received in a multiple antenna communication system having N transmit antennas by receiving the data on each of the N transmit antennas, wherein the data includes a number of pilot tones for each of the N transmit antennas, wherein the pilot tones for each of the N transmit antennas are pseudo-orthogonal with each other. The pilot tones can be orthogonal in the frequency domain, time domain, spatial domain, or all of them.

摘要翻译： 提供了用于在多天线通信系统中传送伪正交导频音调的方法和装置。 通过为N个发送天线中的每一个生成多个导频音，在具有N个发送天线的多天线通信系统中发送数据，其中，N个发射天线中的每一个的导频音调彼此伪正交; 并且在N个发射天线中的每一个上发送数据。 导频音通常嵌入在数据中。 在具有N个发射天线的多天线通信系统中，通过接收N个发射天线中的每一个上的数据来接收数据，其中数据包括用于N个发射天线中的每一个的导频音调，其中， N个发射天线彼此伪正交。 导频音可以在频域，时域，空域或全部正交。

公开(公告)号：US08144797B2

公开(公告)日：2012-03-27

申请号：US12249739

申请日：2008-10-10

申请人： Syed Aon Mujtaba ,  Xiaowen Wang

发明人： Syed Aon Mujtaba ,  Xiaowen Wang

IPC分类号： H04B7/02

CPC分类号： H04B7/0417 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/068 ,  H04B7/0689 ,  H04L1/0016

摘要： A Channel Quality Indicator table for wireless multiple input multiple output (MIMO) networks is disclosed. In one embodiment, a method of generating a table for channel quality indicator (CQI) for an open loop MIMO transmission includes calculating performance of a link between a transmitter and a user end unit for each MIMO transmission mode over a range of average signal-to-noise ratio, and selecting the MIMO transmission mode that maximizes performance for each subset of the range of average signal-to-noise ratio. The method further includes storing the selected MIMO transmission mode and the corresponding subset of the range of average signal-to-noise ratio in a CQI table, the CQI table being stored in an user end unit and a base transceiver station of the open loop MIMO network.

摘要翻译： 公开了一种用于无线多输入多输出（MIMO）网络的信道质量指标表。 在一个实施例中，生成用于开环MIMO传输的信道质量指示符（CQI）的表的方法包括：在平均信号到平均信号的范围内，针对每个MIMO传输模式来计算发射机和用户端单元之间的链路的性能 并且选择使平均信噪比范围的每个子集的性能最大化的MIMO传输模式。 该方法还包括将所选择的MIMO传输模式和平均信噪比范围的相应子集存储在CQI表中，该CQI表被存储在开环MIMO的用户端单元和基站中 网络。