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公开(公告)号：US09867060B2
公开(公告)日：2018-01-09
申请号：US14907927
申请日：2014-07-07
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Inoue , Daiki Takeda
CPC classification number: H04W16/28 , H01Q1/246 , H01Q3/00 , H04B7/0417 , H04B7/0626 , H04B7/0691 , H04B7/0695
Abstract: In a radio communication system performing radio communications using multiple antenna ports, a radio base station apparatus transmits a reference signal from each of the antenna ports in multiple patterns corresponding to a plurality of antenna port configurations formed of single antenna elements or groups of antenna elements, and determines the antenna elements that form the respective antenna ports based upon feedback information supplied from a mobile device that has received the reference signal in the multiple patterns.
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公开(公告)号：US20160183275A1
公开(公告)日：2016-06-23
申请号：US14910157
申请日：2014-07-07
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Inoue , Daiki Takeda
CPC classification number: H04W72/12 , H01Q1/246 , H01Q21/061 , H04B7/0695 , H04B7/10 , H04W72/044 , H04W88/08
Abstract: A radio base station apparatus has a multimode antenna providing multiple antenna configurations, an acquisition unit configured to acquire channel information of user equipment and at least one of location information of the user equipment and phase difference information between antenna ports of signals transmitted from the user equipment, and a determination unit configured to determine scheduling for the user equipment together with an antenna configuration to be allocated to the user equipment, based upon the acquired information.
Abstract translation: 无线基站装置具有提供多个天线配置的多模天线，获取单元，被配置为从用户设备发送的信号的天线端口之间获取用户设备的信道信息和用户设备的位置信息和相位差信息中的至少一个， 以及确定单元，被配置为基于获取的信息来确定用于用户设备的调度以及要分配给用户设备的天线配置。
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公开(公告)号：US09769777B2
公开(公告)日：2017-09-19
申请号：US14910515
申请日：2014-07-07
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Inoue , Daiki Takeda
CPC classification number: H04W56/0015 , H01Q1/246 , H01Q3/267 , H04B7/0413 , H04B7/10 , H04B17/12 , H04W56/0035
Abstract: When using a plurality of antenna elements, calibration is performed appropriately, while preventing processing time from increasing. A base station apparatus has a plurality of antenna elements; a combiner configured to receive and combine downlink transmission signals, each including a reference signal, from monitor ports provided corresponding to the antenna elements; a channel estimator configured to estimate a channel of the reference signal for each of the antenna elements; and a calibration controller configured to calculate a calibration correction value to be applied to each of the antenna elements based upon channel estimation result.
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4.发明申请RADIO BASE STATION, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD 有权无线电基站，无线电通信系统和无线电通信方法公开(公告)号：US20150094076A1
公开(公告)日：2015-04-02
申请号：US14387383
申请日：2013-02-08
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Inoue , Satoshi Nagata , Takehiro Nakamura
CPC classification number: H04W72/046 , H04B7/0615 , H04B7/0697 , H04W16/08 , H04W16/28 , H04W16/30 , H04W52/143 , H04W52/343 , H04W52/42 , H04W72/0446 , H04W72/0486 , H04W88/08
Abstract: The present invention is designed to make effective use of radio resources in VSEC to output a plurality of beams of varying tilt angles for sectorization in vertical directions. A radio communication method for a radio base station that outputs a plurality of beams of varying tilt angles and forms a plurality of cells that are sectorized vertically, and a user terminal that establishes wireless connection with the radio base station, provides the steps in which the radio base station acquires information about the communication capacity of each of the plurality of cells, and controls the vertical plane beam width and/or transmission power of each cell and sets the coverage area of each cell so that differences in communication capacity between the plurality of cells are reduced.
Abstract translation: 本发明旨在有效利用VSEC中的无线电资源来输出多个不同倾斜角度的波束，用于垂直方向的分割。 一种用于无线电基站的无线电通信方法，其输出多个变化的倾斜角度的波束并且形成垂直扇区的多个小区，以及与无线基站建立无线连接的用户终端，提供了以下步骤： 无线基站获取关于多个小区中的每个小区的通信容量的信息，并且控制各小区的垂直平面波束宽度和/或发射功率，并设置每个小区的覆盖区域，使得多个小区之间的通信容量的差异 细胞减少。
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Patent Agency Ranking
5.发明授权Radio base station, radio communication system and radio communication method 有权无线电基站，无线电通信系统和无线电通信方式公开(公告)号：US09439198B2
公开(公告)日：2016-09-06
申请号：US14387383
申请日：2013-02-08
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Inoue , Satoshi Nagata , Takehiro Nakamura
IPC: H04W72/00 , H04W72/04 , H04W16/28 , H04B7/06 , H04W52/14 , H04W52/34 , H04W16/08 , H04W16/30 , H04W52/42 , H04W88/08
CPC classification number: H04W72/046 , H04B7/0615 , H04B7/0697 , H04W16/08 , H04W16/28 , H04W16/30 , H04W52/143 , H04W52/343 , H04W52/42 , H04W72/0446 , H04W72/0486 , H04W88/08
Abstract: The present invention is designed to make effective use of radio resources in VSEC to output a plurality of beams of varying tilt angles for sectorization in vertical directions. A radio communication method for a radio base station that outputs a plurality of beams of varying tilt angles and forms a plurality of cells that are sectorized vertically, and a user terminal that establishes wireless connection with the radio base station, provides the steps in which the radio base station acquires information about the communication capacity of each of the plurality of cells, and controls the vertical plane beam width and/or transmission power of each cell and sets the coverage area of each cell so that differences in communication capacity between the plurality of cells are reduced.
Abstract translation: 本发明旨在有效利用VSEC中的无线电资源来输出多个不同倾斜角度的波束，用于垂直方向的分割。 一种用于无线电基站的无线电通信方法，其输出多个变化的倾斜角度的波束并且形成垂直扇区的多个小区，以及与无线基站建立无线连接的用户终端，提供了以下步骤： 无线基站获取关于多个小区中的每个小区的通信容量的信息，并且控制各小区的垂直平面波束宽度和/或发射功率，并设置每个小区的覆盖区域，使得多个小区之间的通信容量的差异 细胞减少。
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公开(公告)号：US20160183209A1
公开(公告)日：2016-06-23
申请号：US14910515
申请日：2014-07-07
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Inoue , Daiki Takeda
IPC: H04W56/00
CPC classification number: H04W56/0015 , H01Q1/246 , H01Q3/267 , H04B7/0413 , H04B7/10 , H04B17/12 , H04W56/0035
Abstract: When using a plurality of antenna elements, calibration is performed appropriately, while preventing processing time from increasing. A base station apparatus has a plurality of antenna elements; a combiner configured to receive and combine downlink transmission signals, each including a reference signal, from monitor ports provided corresponding to the antenna elements; a channel estimator configured to estimate a channel of the reference signal for each of the antenna elements; and a calibration controller configured to calculate a calibration correction value to be applied to each of the antenna elements based upon channel estimation result.
Abstract translation: 当使用多个天线元件时，适当地进行校准，同时防止处理时间增加。 基站装置具有多个天线元件， 组合器，被配置为从对应于所述天线元件的监视端口接收并组合每个包括参考信号的下行链路传输信号; 信道估计器，被配置为估计每个天线元件的参考信号的信道; 以及校准控制器，被配置为基于信道估计结果来计算要施加到每个天线元件的校准校正值。
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公开(公告)号：US10897297B2
公开(公告)日：2021-01-19
申请号：US16491432
申请日：2018-03-05
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Inoue , Satoshi Suyama , Yukihiko Okumura
IPC: H04B7/02 , H04B7/06 , H04B7/0413 , H04B7/0456
Abstract: A transmission and reception apparatus includes a plurality of antenna ports. The transmission and reception apparatus includes at least one orthogonal beam fixed beamforming circuit and a high-speed switching circuit between a transmission and reception circuit and the antenna ports. For example, the transmission and reception circuit outputs a transmission signal subjected to transmission signal processing to the high-speed switching circuit during signal transmission, the high-speed switching circuit selects at least one port from a plurality of ports provided at the orthogonal beamforming circuit, and outputs the transmission signal to the selected port, and the orthogonal beamforming circuit forms a beam corresponding to the selected port to transmit the transmission signal.
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公开(公告)号：US20200028556A1
公开(公告)日：2020-01-23
申请号：US16491432
申请日：2018-03-05
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Inoue , Satoshi Suyama , Yukihiko Okumura
IPC: H04B7/06
Abstract: A transmission and reception apparatus includes a plurality of antenna ports. The transmission and reception apparatus includes at least one orthogonal beam fixed beamforming circuit and a high-speed switching circuit between a transmission and reception circuit and the antenna ports. For example, the transmission and reception circuit outputs a transmission signal subjected to transmission signal processing to the high-speed switching circuit during signal transmission, the high-speed switching circuit selects at least one port from a plurality of ports provided at the orthogonal beamforming circuit, and outputs the transmission signal to the selected port, and the orthogonal beamforming circuit forms a beam corresponding to the selected port to transmit the transmission signal.
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公开(公告)号：US10070453B2
公开(公告)日：2018-09-04
申请号：US14910157
申请日：2014-07-07
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Inoue , Daiki Takeda
Abstract: A radio base station apparatus has a multimode antenna providing multiple antenna configurations, an acquisition unit configured to acquire channel information of user equipment and at least one of location information of the user equipment and phase difference information between antenna ports of signals transmitted from the user equipment, and a determination unit configured to determine scheduling for the user equipment together with an antenna configuration to be allocated to the user equipment, based upon the acquired information.
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