公开(公告)号：US20180014300A1

公开(公告)日：2018-01-11

申请号：US15636921

申请日：2017-06-29

Applicant: FUJITSU LIMITED

Inventor： Daisuke JITSUKAWA ,  Takashi DATEKI ,  Hiroyuki SEKI

IPC: H04W72/04 ,  H04L5/14 ,  H04W28/06 ,  H04J11/00

CPC classification number: H04W72/0446 ,  H04B17/12 ,  H04B17/309 ,  H04J2011/0013 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0094 ,  H04L5/14 ,  H04L27/2605 ,  H04W28/06 ,  H04W72/0413

Abstract: The base station may selectively apply one of a first time period having a first guard period (GP) and a second time period having a second GP to time-division duplex communication with a terminal. Further, the base station may notify the terminal of information related to a timing of selectively applying one of the first time period and the second time period, and transmit a predetermined signal in the first guard period.

公开(公告)号：US20130286972A1

公开(公告)日：2013-10-31

申请号：US13925274

申请日：2013-06-24

Applicant: FUJITSU LIMITED

Inventor： Takashi DATEKI

IPC: H04W72/04

CPC classification number: H04W72/0406 ,  H04W16/28

Abstract: A mobile communication system includes one or more base station apparatuses and a plurality of mobile station apparatuses that communicate with the one or more base station apparatuses. A precoding determining unit of the mobile station apparatuses determines applied precoding to be applied to a transmission signal from the base station apparatuses to the corresponding apparatus. A first transmitting unit of the mobile station apparatuses transmits information of the applied precoding to the base station apparatuses. A second transmitting unit of the base station apparatuses applies the same precoding and transmits a transmission signal to a plurality of mobile station apparatuses that specify the same precoding as the applied precoding.

Abstract translation: 移动通信系统包括与一个或多个基站装置通信的一个或多个基站装置和多个移动站装置。 移动站装置的预编码确定单元确定应用于从基站装置向对应装置发送的信号的预编码。 移动站装置的第一发送单元向基站装置发送应用的预编码信息。 基站装置的第二发送单元使用相同的预编码，并将发送信号发送到指定与应用的预编码相同的预编码的多个移动台装置。

公开(公告)号：US20150341913A1

公开(公告)日：2015-11-26

申请号：US14729297

申请日：2015-06-03

Applicant: FUJITSU LIMITED

Inventor： Takashi DATEKI ,  Tetsuya YANO

IPC: H04W72/04 ,  H04L1/18 ,  H04L5/00 ,  H04B7/04

CPC classification number: H04W72/042 ,  H04B7/0413 ,  H04B7/0613 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/1812 ,  H04L5/003 ,  H04L27/34

Abstract: 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.

Abstract translation: 公开了一种由无线通信装置使用的无线通信方法。 无线通信方法发送和接收被分成包含与业务信道的解调和解码相关的信息的第二控制信息的控制信息以及包含与第二控制信息的MIMO间隔有关的信息的第一控制信息。

公开(公告)号：US20140179262A1

公开(公告)日：2014-06-26

申请号：US14106270

申请日：2013-12-13

Applicant: FUJITSU LIMITED

Inventor： Daisuke OGAWA ,  Takashi DATEKI ,  Koji MATSUYAMA

IPC: H04W72/04 ,  H04W24/08 ,  H04W36/30

CPC classification number: H04W36/30 ,  H04L1/20 ,  H04L5/0046 ,  H04L5/0048 ,  H04L5/006

Abstract: A radio communication apparatus including: an antenna configured to receive a frame including reference signals and including other signals corresponding to radio resources to which channels are mapped, and a processor configured to acquire degree of usage of the radio resource, to calculate a reception quality of the reference signals, and to adjust the reception quality in accordance with the degree.

Abstract translation: 一种无线电通信装置，包括：天线，被配置为接收包括参考信号的帧，并且包括对应于信道被映射到的无线电资源的其他信号;以及处理器，被配置为获取所述无线电资源的使用程度，以计算接收质量 参考信号，并根据程度调整接收质量。

公开(公告)号：US20130163518A1

公开(公告)日：2013-06-27

申请号：US13770574

申请日：2013-02-19

Applicant: FUJITSU LIMITED

Inventor： Takashi DATEKI

IPC: H04B7/04

CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/063 ,  H04B7/0669 ,  H04J11/0033

Abstract: A method for performing wireless communication includes performing a precoding process beforehand on a plurality of symbols at a base station; performing space block coding on the plurality of symbols at the base station after the precoding process; sending signals from a plurality of antennas of the base station; performing space block decoding on the signals received by a plurality of antennas at a mobile station; performing antenna combination and a deprecoding process on the signals at the mobile station after the signals have undergone the space block decoding; and estimating the plurality of symbols at the mobile station from the signals that have undergone the deprecoding process.

Abstract translation: 一种用于执行无线通信的方法包括：在基站处对多个符号预先执行预编码处理; 在预编码处理之后对基站处的多个符号执行空间块编码; 从所述基站的多个天线发送信号; 对由移动台上的多个天线接收的信号进行空间块解码; 在信号经过空间块解码之后对移动站的信号执行天线组合和重新编码处理; 以及从已经经过重新编码处理的信号估计移动站处的多个符号。

公开(公告)号：US20130157583A1

公开(公告)日：2013-06-20

申请号：US13687733

申请日：2012-11-28

Applicant: FUJITSU LIMITED

Inventor： Hideto FURUKAWA ,  Takashi DATEKI

IPC: H04W28/02

CPC classification number: H04W28/0236 ,  H04W52/24

Abstract: A radio channel control method for controlling, in a radio communication system having a transmitter and a receiver, a radio channel from the transmitter toward the receiver. The method includes receiving a signal transmitted from the transmitter by the receiver, measuring reception quality of the signal, generating information which indicates increment or decrement of the reception quality, and controlling a modulation or coding for the radio channel based on the information.

Abstract translation: 一种用于在具有发射机和接收机的无线电通信系统中控制从发射机到接收机的无线电信道的无线电信道控制方法。 该方法包括接收由接收机从发射机发送的信号，测量信号的接收质量，产生指示接收质量增加或减少的信息，以及基于该信息来控制无线电信道的调制或编码。

公开(公告)号：US20130065519A1

公开(公告)日：2013-03-14

申请号：US13674522

申请日：2012-11-12

Applicant: Fujitsu Limited

Inventor： Takashi DATEKI ,  Takashi SEYAMA

IPC: H04W4/00

CPC classification number: H04L5/0048 ,  H04L5/0007 ,  H04L27/2602 ,  H04L27/2607 ,  H04L27/2662

Abstract: A transmitter that performs radio communications with a receiver in a plurality of types of communications services, the transmitter includes a controller that controls guard intervals of at least any one of a plurality of codes, which are unique to respective cells and correspond to any one of the plurality of types of communications services, so that lengths of guard intervals of the plurality of codes become same; and a transmitting unit that transmits first codes among the plurality of codes using a first band set in a transmission band, and also transmits second codes among the plurality of codes different from the first codes using a second band set in the transmission band different from the first band set.

Abstract translation: 一种发射机，其在多种类型的通信业务中与接收机进行无线电通信，所述发射机包括控制器，所述控制器控制多个码中的至少任一个的保护间隔，所述多个码对于各个小区是唯一的，并且对应于 多种类型的通信服务，使得多个代码的保护间隔的长度变得相同; 以及发送单元，其使用在传输频带中设置的第一频带来发送所述多个代码中的第一代码，并且还使用与所述第一代码不同的所述传输频带中设置的第二频带来发送与所述第一代码不同的所述多个代码中的第二代码 第一组乐队。

公开(公告)号：US20150264673A1

公开(公告)日：2015-09-17

申请号：US14728465

申请日：2015-06-02

Applicant: FUJITSU LIMITED

Inventor： Takashi DATEKI ,  Tetsuya YANO

IPC: H04W72/04 ,  H04L27/34 ,  H04B7/06 ,  H04L1/18 ,  H04L1/00

CPC classification number: H04W72/042 ,  H04B7/0413 ,  H04B7/0613 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/1812 ,  H04L5/003 ,  H04L27/34

Abstract: 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.

公开(公告)号：US20150005001A1

公开(公告)日：2015-01-01

申请号：US14309555

申请日：2014-06-19

Applicant: FUJITSU LIMITED

Inventor： Takashi DATEKI

IPC: H04W4/02

CPC classification number: H04W4/027 ,  G01S11/10

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20230006723A1

公开(公告)日：2023-01-05

申请号：US17708069

申请日：2022-03-30

Applicant: FUJITSU LIMITED

Inventor： Liang Zhou ,  Takashi DATEKI

IPC: H04B7/06 ,  H04W16/28 ,  H04B17/318

Abstract: 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.