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1. 发明授权

US11621759B2 Wireless communication system, wireless communication device, and beam pattern determination method 有权
公开(公告)号：US11621759B2
公开(公告)日：2023-04-04
申请号：US17708069
申请日：2022-03-30
申请人： FUJITSU LIMITED
发明人： Liang Zhou , Takashi Dateki
IPC分类号： H04B7/06 , H04B17/318 , H04W16/28
摘要： A wireless communication system includes a wireless transmission device and a wireless reception device. The wireless reception device includes: a plurality of reception antennas; and a processor connected to the reception antennas. The processor executes a process including: selecting transmission beam candidates or reception beam candidates based on a reception power of a signal transmitted by using transmission beams of a first array or of a signal received by using reception beams of the first array, the first array setting a delay difference between a plurality of antennas; and determining a beam pattern of a transmission beam and a reception beam based on a reception power of a signal transmitted by using transmission beam candidates formed by a second array or of a signal received by using reception beam candidates formed by the second array, the second array setting a phase difference between a plurality of antennas.

2. 发明授权

US10523298B2 Method for controlling wireless communication, wireless communication system, reception device, and transmission device 有权
公开(公告)号：US10523298B2
公开(公告)日：2019-12-31
申请号：US15835611
申请日：2017-12-08
申请人： FUJITSU LIMITED
发明人： Daisuke Jitsukawa , Takashi Dateki , Hiroyuki Seki
IPC分类号： H04B7/06 , H04L25/02 , H04W72/04
摘要： A method performed by a transmission device and a reception device in a wireless communication system, the method including: executing a process for receiving a reference signal, which is transmitted from each of plural transmit antennas of the transmission device, through a specific receive antenna which is one of at least one receive antenna of the reception device; executing a process for deciding a transmit antenna weight and a receive antenna weight based on the reference signal, the transmit antenna weight and the receive antenna weight being applied in a case where only the specific receive antenna receives a signal which is transmitted by each of the plural transmit antennas based on same transmission data; and executing a process for transmitting first information about the transmit antenna weight and second information about the receive antenna weight to the transmission device.

3. 发明授权

US10348369B2 Transmission control device and transmission control method 有权
公开(公告)号：US10348369B2
公开(公告)日：2019-07-09
申请号：US15627990
申请日：2017-06-20
申请人： FUJITSU LIMITED
发明人： Takashi Dateki , Takashi Seyama , Takaharu Kobayashi
IPC分类号： H04W56/00 , H04B7/0452 , H04W76/15 , H04B7/024 , H04B17/318 , H04B7/06 , H04L5/00 , H04W72/04
摘要： A transmission control device includes an acquiring unit that acquires propagation delay time for each propagation path between a plurality of terminal devices and a plurality of transmitter stations; a selector that selects, based on the propagation delay time acquired by the acquiring unit, combinations of terminal devices having similar propagation delay differences from the plurality of the transmitter stations; and a controller that controls transmission timing of the plurality of the transmitter stations that transmit signals to the combinations of the terminal devices selected by the selector.

4. 发明申请

US20180288780A1 TRANSMITTER, WIRELESS COMMUNICATION SYSTEM, AND METHOD FOR PROCESSING IN TRANSMITTER 审中-公开
公开(公告)号：US20180288780A1
公开(公告)日：2018-10-04
申请号：US15906753
申请日：2018-02-27
申请人： FUJITSU LIMITED
发明人： Takashi Seyama , Takashi Dateki
IPC分类号： H04W72/12 , H04W72/04 , H04B7/06
摘要： A transmitter includes: a plurality of transmission antennas; a channel estimator configured to estimate channels between the plurality of transmission antennas and a plurality of receivers; a scheduler configured to schedule a combination of target receivers of transmitting downlink signals on same radio resource among the plurality of receivers; and a transmitter configured to transmit downlink signals intended for the combination scheduled by the scheduler by beam forming from the plurality of transmission antennas on the same radio resource. The scheduler modifies a selecting rule related to the combination of target receivers in accordance with a delay time of an opportunity of transmitting the downlink signal from a timing of estimating the channels.

5. 发明授权

US09344851B2 Speed estimation method in a mobile terminal according to a result of determining a given satisfying condition 有权
标题翻译：根据确定给定满足条件的结果，移动终端中的速度估计方法
公开(公告)号：US09344851B2
公开(公告)日：2016-05-17
申请号：US14309555
申请日：2014-06-19
申请人： FUJITSU LIMITED
发明人： Takashi Dateki
IPC分类号： H04W24/00 , H04W4/02 , G01S11/10
CPC分类号： H04W4/027 , G01S11/10
摘要： A mobile terminal includes: a memory; and a processor coupled to the memory and configured to: receive two or more of component carriers of different bandwidths, the component carriers being used for wireless communication performed by the mobile terminal, estimate one or more speeds of the mobile terminal based on respective one or more carriers among the two or more of the component carriers, determine whether the estimated one or more speeds satisfy a given condition, and estimate a speed of the mobile terminal according to a result of the determining.
摘要翻译：移动终端包括：存储器; 以及处理器，其耦合到所述存储器并且被配置为：接收两个或更多个不同带宽的分量载波，所述分量载波用于由所述移动终端执行的无线通信，基于相应的一个或多个估计来估计所述移动终端的一个或多个速度两个或多个分量载波中的更多载波确定估计的一个或多个速度是否满足给定条件，并且根据确定的结果来估计移动终端的速度。

6. 发明授权

US10547363B2 Transmission control device, radiocommunication system, and calibration method 有权
公开(公告)号：US10547363B2
公开(公告)日：2020-01-28
申请号：US15636883
申请日：2017-06-29
申请人： FUJITSU LIMITED
发明人： Daisuke Jitsukawa , Takashi Dateki
IPC分类号： H04B7/06 , H04B1/405 , H04B7/005 , H04B17/21 , H04B7/12 , H04B7/212 , H04B7/208 , H01Q3/26
摘要： A transmission control device includes a memory and a processor connected to the memory. The processor executes a process including: selecting a reference transmission point as a starting point of generating a link from among a plurality of transmission points of which each wirelessly transmits a signal; sequentially selecting the transmission points one by one for each hierarchy corresponding to a number of hops from the selected reference transmission point and retrieving ones of the transmission points for which radio quality between the ones and the selected transmission point satisfies a predetermined criterion; and generating a link between the selected transmission point and a transmission point, among the transmission points obtained as a result at the retrieving, not connected to others of the transmission points to connect the two transmission points.

7. 发明授权

US09191258B2 Reception device and reception method 有权
标题翻译：接收设备和接收方式
公开(公告)号：US09191258B2
公开(公告)日：2015-11-17
申请号：US14143743
申请日：2013-12-30
申请人： FUJITSU LIMITED
发明人： Takashi Seyama , Takashi Dateki
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08 , H04L27/26 , H04L25/02
CPC分类号： H04L27/2647 , H04J11/0023 , H04L5/005 , H04L25/0204 , H04L25/0224
摘要： A reception device including: an antenna configured to receive a radio signal including a radio frame that includes a plurality of symbols, and a processor configured to perform a first processing for estimating a first interference noise power for one or more first specified symbols of the plurality of symbols, each of the one or more first specified symbols including each of one or more reference signals respectively, and to perform a second processing for estimating a second interference noise power for one or more second specified symbols of the plurality of symbols, each of the one or more second specified symbols including no reference signal, the second interference noise power differing from the first interference noise power.
摘要翻译：一种接收装置，包括：天线，被配置为接收包括包括多个符号的无线电帧的无线电信号;以及处理器，被配置为执行用于估计所述多个符号中的一个或多个第一特定符号的第一干扰噪声功率的第一处理的符号，分别包括一个或多个参考信号中的每一个的一个或多个第一指定符号中的每一个，并且执行用于估计多个符号中的一个或多个第二指定符号的第二干扰噪声功率的第二处理，所述一个或多个第二指定符号不包括参考信号，所述第二干扰噪声功率不同于所述第一干扰噪声功率。

8. 发明申请

US20140192937A1 RECEPTION DEVICE AND RECEPTION METHOD 有权
标题翻译：接收设备和接收方法
公开(公告)号：US20140192937A1
公开(公告)日：2014-07-10
申请号：US14143743
申请日：2013-12-30
申请人： FUJITSU LIMITED
发明人： Takashi SEYAMA , Takashi Dateki
IPC分类号： H04L25/02 , H04L27/26
CPC分类号： H04L27/2647 , H04J11/0023 , H04L5/005 , H04L25/0204 , H04L25/0224
摘要： A reception device including: an antenna configured to receive a radio signal including a radio frame that includes a plurality of symbols, and a processor configured to perform a first processing for estimating a first interference noise power for one or more first specified symbols of the plurality of symbols, each of the one or more first specified symbols including each of one or more reference signals respectively, and to perform a second processing for estimating a second interference noise power for one or more second specified symbols of the plurality of symbols, each of the one or more second specified symbols including no reference signal, the second interference noise power differing from the first interference noise power.
摘要翻译：一种接收装置，包括：天线，被配置为接收包括包括多个符号的无线电帧的无线电信号;以及处理器，被配置为执行用于估计所述多个符号中的一个或多个第一特定符号的第一干扰噪声功率的第一处理的符号，分别包括一个或多个参考信号中的每一个的一个或多个第一指定符号中的每一个，并且执行用于估计多个符号中的一个或多个第二指定符号的第二干扰噪声功率的第二处理，所述一个或多个第二指定符号不包括参考信号，所述第二干扰噪声功率不同于所述第一干扰噪声功率。

9. 发明授权

US10721718B2 Transmission method, base station apparatus, and wireless communication system 有权
公开(公告)号：US10721718B2
公开(公告)日：2020-07-21
申请号：US16278599
申请日：2019-02-18
申请人： FUJITSU LIMITED
发明人： Daisuke Jitsukawa , Takashi Seyama , Takashi Dateki
IPC分类号： H04W72/04
摘要： A transmission method includes: selecting, from a cooperative cluster covered by a plurality of transmission points that transmit signals in cooperation with each other, a transmission point positioned in vicinity of a boundary between the cooperative cluster and another cooperative cluster; generating a first transmission weight that causes the selected transmission point to form a directional beam directed in a direction different from a direction of the another cooperative cluster; generating, by using the first transmission weight generated, a second transmission weight that weights transmission signals, such that signals that are transmitted simultaneously from the transmission points and addressed to a plurality of transmission destinations are separately received; generating, by using the second transmission weight generated, streams to be transmitted from the transmission points, the streams respectively corresponding to antennas; and transmitting the streams generated, from the transmission points.

10. 发明授权

US09907063B2 Wireless communication system 有权
公开(公告)号：US09907063B2
公开(公告)日：2018-02-27
申请号：US14729297
申请日：2015-06-03
申请人： FUJITSU LIMITED
发明人： Takashi Dateki , Tetsuya Yano
IPC分类号： H04W72/04 , H04B7/0413 , H04L5/00 , H04B7/06 , H04L1/00 , H04L1/18 , H04L27/34
CPC分类号： H04W72/042 , H04B7/0413 , H04B7/0613 , H04B7/0697 , H04L1/0003 , H04L1/0025 , H04L1/0026 , H04L1/1812 , H04L5/003 , H04L27/34
摘要： A wireless communication method used by a wireless communication apparatus is disclosed. The wireless communication method transmits and receives control information divided into a second control information containing information related to the demodulation and decoding of traffic channel and a first control information containing information related to the MIMO separation of the second control information.

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