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公开(公告)号：US20210036749A1
公开(公告)日：2021-02-04
申请号：US16757489
申请日：2017-10-30
发明人： Yongquan Qiang , Girum Fantaye , Jianguo Long , Hong Ren
IPC分类号： H04B7/0456 , H04B7/06 , H04L5/00
摘要： Systems and methods are disclosed herein that related to determining and using a codebook in a virtualized Active Antenna System (AAS). In some embodiments, a first radio node that is configured to communicate with a second radio node comprises a radio interface and processing circuitry configured to transform a first codebook that is in a non-virtualized antenna domain to a second codebook that is in a virtualized antenna domain based on a port to antenna mapping matrix used to transform a signal from the virtualized antenna domain to the non-virtualized antenna domain prior to transmission of the signal in a corresponding virtualized cell or sector. The processing circuitry is further configured to receive a transmit signal from the second radio node to thereby provide a received signal and perform Precoding Matrix Indication (PMI) estimation based on the received signal using the second codebook in the virtualized antenna domain.
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公开(公告)号：US10097286B2
公开(公告)日：2018-10-09
申请号：US15112227
申请日：2014-02-19
发明人： Jianguo Long , Girum Fantaye , Bo Göransson
摘要： The disclosure relates to a method, performed in a multi-antenna radio access node comprising four logical antenna ports mapped to corresponding physical antennas, of transmitting data using three physical antennas. The method comprises determining (S51) loss of data transmission from one physical antenna of the four physical antennas. A required multi-antenna transmission scheme is determined (S52). An antenna mapping matrix prestored in the radio access node is selected (S53), the selected antenna mapping matrix adapted to the required multi-antenna transmission scheme. Data on the four logical antenna ports are re-mapped (S54) to the remaining three physical antennas by using the selected antenna mapping matrix, whereupon the data is transmitted (S55) from the remaining three physical antennas.
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公开(公告)号：US10448416B2
公开(公告)日：2019-10-15
申请号：US16044468
申请日：2018-07-24
发明人： Girum Fantaye , Ying Sun
摘要： Uplink traffic control device, method and computer program product to determine that predictive scheduling is to be applied for the mobile station. Thereafter an uplink transmission scheme is determined for the predictive scheduling. Thereafter, periodic messages comprising uplink transmission grants, according to the uplink transmission scheme, are sent to the mobile station, the messages further comprising a request for a downlink channel quality indicator (CQI) report.
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公开(公告)号：US10064207B2
公开(公告)日：2018-08-28
申请号：US15193002
申请日：2016-06-24
发明人： Girum Fantaye , Ying Sun
CPC分类号： H04W72/1226 , H04L5/0057 , H04W72/1252 , H04W72/14 , H04W74/04 , H04W76/28 , H04W84/042
摘要： Uplink traffic control device, method and computer program product to determine that predictive scheduling is to be applied for the mobile station. Thereafter an uplink transmission scheme is determined for the predictive scheduling. Thereafter, periodic messages comprising uplink transmission grants, according to the uplink transmission scheme, are sent to the mobile station, the messages further comprising a request for a downlink channel quality indicator (CQI) report.
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公开(公告)号：US20160337054A1
公开(公告)日：2016-11-17
申请号：US15112227
申请日：2014-02-19
发明人： Jianguo Long , Girum Fantaye , Bo Göransson
CPC分类号： H04B17/17 , H04B7/0689 , H04L1/1893 , H04L1/1896 , H04L5/0048 , H04W52/42
摘要： The disclosure relates to a method, performed in a multi-antenna radio access node comprising four logical antenna ports mapped to corresponding physical antennas, of transmitting data using three physical antennas. The method comprises determining (S51) loss of data transmission from one physical antenna of the four physical antennas. A required multi-antenna transmission scheme is determined (S52). An antenna mapping matrix prestored in the radio access node is selected (S53), the selected antenna mapping matrix adapted to the required multi-antenna transmission scheme. Data on the four logical antenna ports are re-mapped (S54) to the remaining three physical antennas by using the selected antenna mapping matrix, whereupon the data is transmitted (S55) from the remaining three physical antennas.
摘要翻译： 本公开涉及一种在包括映射到对应的物理天线的四个逻辑天线端口的多天线无线接入节点中执行的使用三个物理天线发送数据的方法。 该方法包括确定（S51）四个物理天线的一个物理天线的数据传输损失。 确定所需的多天线传输方案（S52）。 选择在无线电接入节点中预先存储的天线映射矩阵（S53），所选择的天线映射矩阵适合所需的多天线传输方案。 通过使用所选择的天线映射矩阵将四个逻辑天线端口上的数据重新映射（S54）到剩余的三个物理天线，从而剩余的三个物理天线发送数据（S55）。
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公开(公告)号：US11271623B2
公开(公告)日：2022-03-08
申请号：US16757489
申请日：2017-10-30
发明人： Yongquan Qiang , Girum Fantaye , Jianguo Long , Hong Ren
IPC分类号： H04B7/0456 , H04B7/06 , H04L5/00
摘要： Systems and methods are disclosed herein that related to determining and using a codebook in a virtualized Active Antenna System (AAS). In some embodiments, a first radio node that is configured to communicate with a second radio node comprises a radio interface and processing circuitry configured to transform a first codebook that is in a non-virtualized antenna domain to a second codebook that is in a virtualized antenna domain based on a port to antenna mapping matrix used to transform a signal from the virtualized antenna domain to the non-virtualized antenna domain prior to transmission of the signal in a corresponding virtualized cell or sector. The processing circuitry is further configured to receive a transmit signal from the second radio node to thereby provide a received signal and perform Precoding Matrix Indication (PMI) estimation based on the received signal using the second codebook in the virtualized antenna domain.
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公开(公告)号：US10904900B2
公开(公告)日：2021-01-26
申请号：US16600184
申请日：2019-10-11
发明人： Girum Fantaye , Ying Sun
摘要： Uplink traffic control device, method and computer program product to determine that predictive scheduling is to be applied for the mobile station. Thereafter an uplink transmission scheme is determined for the predictive scheduling. Thereafter, periodic messages comprising uplink transmission grants, according to the uplink transmission scheme, are sent to the mobile station, the messages further comprising a request for a downlink channel quality indicator (CQI) report.
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公开(公告)号：US10735114B2
公开(公告)日：2020-08-04
申请号：US16122182
申请日：2018-09-05
发明人： Jianguo Long , Girum Fantaye , Bo Göransson
摘要： A radio access node comprises four logical antenna ports respectively mapped to four physical antennas. Responsive to a loss of data transmission from one of the four physical antennas, the radio access node transmits reference signals representing the four logical antenna ports on the remaining three physical antennas. Each reference signal represents a respective antenna port of the four logical antenna ports. The radio access node also scales transmission power of a physical antenna transmitting more than one of the reference signals based on the number of the reference signals the physical antenna transmits.
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公开(公告)号：US20190036624A1
公开(公告)日：2019-01-31
申请号：US16122182
申请日：2018-09-05
发明人： Jianguo Long , Girum Fantaye , Bo Göransson
CPC分类号： H04B17/17 , H04B7/0689 , H04L1/1893 , H04L1/1896 , H04L5/0048 , H04W52/42
摘要： A radio access node comprises four logical antenna ports respectively mapped to four physical antennas. Responsive to a loss of data transmission from one of the four physical antennas, the radio access node transmits reference signals representing the four logical antenna ports on the remaining three physical antennas. Each reference signal represents a respective antenna port of the four logical antenna ports. The radio access node also scales transmission power of a physical antenna transmitting more than one of the reference signals based on the number of the reference signals the physical antenna transmits.
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公开(公告)号：US20180020471A1
公开(公告)日：2018-01-18
申请号：US15547818
申请日：2015-02-02
发明人： Shiguang Guo , Girum Fantaye
IPC分类号： H04W72/12
CPC分类号： H04W72/1289 , H04W72/1236 , H04W72/1252
摘要： The embodiments herein provide a method and apparatus for scheduling users of a communication system, based on an advantageous pre-scheduling scheme. As a first scheduler process during a current scheduling interval, first users selected for scheduling in the current scheduling interval are regularly scheduled to thereby make radio resource reservations for the first users. As a second scheduler process during the current scheduling interval, second users not among the first users are identified as having scheduling deadlines falling in a subsequent scheduling interval. As a further operation of the second scheduler process, the second users for the subsequent scheduling interval are prescheduled to thereby make radio resource reservations in the subsequent scheduling interval for the second users. The second scheduling may be performed using processing resources that would otherwise be left idle by the first scheduler process during the current scheduling interval.
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