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公开(公告)号：US10277292B2
公开(公告)日：2019-04-30
申请号：US15796185
申请日：2017-10-27
发明人： Mats Högberg , Björn Sihlbom , Ulrik Imberg , Tomas Wilhelmsson , Teijo Henrikki Lehtinen , Yajun Jiang
IPC分类号： H04L27/28 , H04B7/0452 , H04B7/0408 , H04B7/0491 , H01Q3/24 , H01Q21/06 , H01Q21/28 , H01Q5/42 , H01Q21/00
摘要： Radio network node and method therein, for communication in a wireless communication system. The radio network node comprises: a plurality of antenna elements, forming an antenna array; a plurality of transceivers, each transceiver coupled to at least one dedicated antenna element of the antenna array; and a controller configured to adjust a first subset of the transceivers to work at a first frequency band, and to adjust a second subset of the transceivers to work at a second frequency band. The first subset of transceivers and the second subset of transceivers (are disjoint and configured to operate at their respective frequency bands simultaneously.
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公开(公告)号：US10249961B2
公开(公告)日：2019-04-02
申请号：US15825302
申请日：2017-11-29
发明人： Björn Sihlbom , Mattias Gustafsson
IPC分类号： H04M1/00 , H01Q21/06 , H04B7/0456 , H01Q9/04 , H04B7/10 , H04B7/0452
摘要： Embodiments relate to a transmit device, the transmit device comprising: at least one logical antenna port configured to provide a broadcast component signal; an antenna array having M number of rows and N number of columns of antenna elements; and a processor configured to select Q number of columns among the N number of columns, where Q≤N, determine a phase center location (PCL) for the logical antenna port, wherein the phase center location is arranged in a point on a vertical axis (A) located in the Q number of columns, map the logical antenna port on the physical antenna ports of the Q number of columns.
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公开(公告)号：US20180090853A1
公开(公告)日：2018-03-29
申请号：US15825302
申请日：2017-11-29
发明人： Björn Sihlbom , Mattias Gustafsson
CPC分类号： H01Q21/065 , H01Q9/0407 , H01Q9/0435 , H01Q9/0478 , H04B7/0452 , H04B7/0469 , H04B7/10
摘要： Embodiments relate to a transmit device, the transmit device comprising: at least one logical antenna port configured to provide a broadcast component signal; an antenna array having M number of rows and N number of columns of antenna elements; and a processor configured to select Q number of columns among the N number of columns, where Q≦N, determine a phase centre location (PCL) for the logical antenna port, wherein the phase centre location is arranged in a point on a vertical axis (A) located in the Q number of columns, map the logical antenna port on the physical antenna ports of the Q number of columns.
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公开(公告)号：US20180324799A1
公开(公告)日：2018-11-08
申请号：US16034713
申请日：2018-07-13
发明人： Yuanjie Li , Per Tengqvist , Björn Sihlbom
CPC分类号： H04W72/0446 , H04L5/00 , H04L5/0048
摘要： Embodiments of the present invention disclose a radio frame transmission method, including: determining radio frame configuration information, and performing uplink transmission of a radio frame according to the radio frame configuration information, where the radio frame includes at least three special subframes. Correspondingly, the embodiments of the present invention also disclose a wireless network device. With the present invention, a quantity of subframes used for uplink transmission can be increased in the radio frame. Further, a quantity of subframes used for sounding signal sending is increased, and obtaining of a downlink channel state becomes timelier.
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公开(公告)号：US20160128023A1
公开(公告)日：2016-05-05
申请号：US14757767
申请日：2015-12-23
发明人： Anders Gustavsson , Björn Sihlbom , Mats Hogberg , Mattias Gustafsson , Martin Alm , Mats Andersson
IPC分类号： H04W72/02 , H04B17/382 , H04B7/04
CPC分类号： H04W72/02 , H04B7/0413 , H04B7/0452 , H04B7/0456 , H04B7/0617 , H04B7/0697 , H04B17/382
摘要： Radio network node comprises a plurality of antenna sub arrays, forming a multiple antenna array which is configured for beamforming, spatial multiplexing and Multiple Input Multiple Output, MIMO, transmission/reception, and further comprising an antenna base band processing unit and a central base band processing unit. The radio network node further comprises a plurality of antenna active modules, wherein each active antenna module is connected to one of the antenna sub arrays, comprised in the multiple antenna array, and wherein each active antenna module is configured for pre-processing of signals over the respective antenna sub array, before any forwarding of signals is made to the central base band processing unit.
摘要翻译： 无线网络节点包括多个天线子阵列，形成配置用于波束成形，空间复用和多输入多输出，MIMO，发射/接收的多天线阵列，并且还包括天线基带处理单元和中心基带 处理单元。 无线电网络节点还包括多个天线有源模块，其中每个有源天线模块连接到包括在多天线阵列中的天线子阵列之一，并且其中每个有源天线模块被配置用于预处理信号 在向中央基带处理单元进行任何信号转发之前，相应的天线子阵列。
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公开(公告)号：US10680685B2
公开(公告)日：2020-06-09
申请号：US16290630
申请日：2019-03-01
发明人： Mats Högberg , Björn Sihlbom , Ulrik Imberg , Tomas Wilhelmsson , Teijo Henrikki Lehtinen , Yajun Jiang
IPC分类号： H04L27/28 , H04B7/0452 , H04B7/0408 , H04B7/0491 , H01Q3/24 , H01Q21/06 , H01Q21/28 , H01Q5/42 , H01Q21/00
摘要： Radio network node and method therein, for communication in a wireless communication system. The radio network node comprises: a plurality of antenna elements, a plurality of transceivers, wherein the plurality of transceivers comprise a first subset of the plurality of transceivers coupled to a first subset of the plurality of antenna elements and a second subset of the plurality of transceivers coupled to a second subset of the plurality of antenna elements; and a controller configured to adjust the first subset of the transceivers to work at a first frequency band, and to adjust the second subset of the transceivers to work at a second frequency band.
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公开(公告)号：US10375674B2
公开(公告)日：2019-08-06
申请号：US14757767
申请日：2015-12-23
发明人： Anders Gustavsson , Björn Sihlbom , Mats Hogberg , Mattias Gustafsson , Martin Alm , Mats Andersson
IPC分类号： H04B17/382 , H04W72/02 , H04B7/0452 , H04B7/0456 , H04B7/06 , H04B7/0413
摘要： Radio network node comprises a plurality of antenna sub arrays, forming a multiple antenna array which is configured for beamforming, spatial multiplexing and Multiple Input Multiple Output, MIMO, transmission/reception, and further comprising an antenna base band processing unit and a central base band processing unit. The radio network node further comprises a plurality of antenna active modules, wherein each active antenna module is connected to one of the antenna sub arrays, comprised in the multiple antenna array, and wherein each active antenna module is configured for pre-processing of signals over the respective antenna sub array, before any forwarding of signals is made to the central base band processing unit.
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公开(公告)号：US10212715B2
公开(公告)日：2019-02-19
申请号：US15345633
申请日：2016-11-08
发明人： Björn Sihlbom
摘要： Radio network node and method therein, for channel estimation of a channel used for wireless signal communication with a UE. The radio network node comprises a multiple antenna array configured for beamforming, spatial multiplexing and MIMO transmission. The radio network node also comprises a receiver, configured for receiving a first pilot signal from the UE, and a wireless signal from an interferer; and also configured for receiving a second pilot signal from the UE at a determined AoA, filtered by a receiver pre-filter; and a processor configured for spatial analyzing the received signals; and selecting the UE pilot signals; and configured for determining AoA for the selected pilot signals; and furthermore configured for designing a receiver pre-filter, for isolating signals from the AoA; and also further configured for estimating the channel, based on the received second pilot signal.
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公开(公告)号：US10084522B2
公开(公告)日：2018-09-25
申请号：US15055237
申请日：2016-02-26
发明人： Zixin Zhang , Simon Andersson , Björn Sihlbom
IPC分类号： H04B7/06 , H04B7/0456 , H04B7/26 , H04J11/00 , H04L5/00 , H04L27/20 , H04L12/815 , H04W88/02 , H04W88/08
CPC分类号： H04B7/0617 , H04B7/0465 , H04B7/26 , H04J11/0033 , H04L5/0023 , H04L27/205 , H04L47/22 , H04W88/02 , H04W88/08
摘要： Radio network node and method in a radio network node, for wireless communication with a user equipment in a wireless communication system in antenna streams, wherein the radio network node comprises a plurality of antenna elements, forming a multiple antenna array which is configured for massive MIMO transmission. The method comprises beamforming a signal to be transmitted to the user equipment by splitting and phase shifting said signal; detecting a peak of power of one beamformed signal, exceeding a threshold value; manipulating said signal until the peak of power of the signal is lower than said threshold value; and transmitting said signal, to be received by the user equipment.
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