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1.发明申请公开(公告)号：US20160366584A1
公开(公告)日：2016-12-15
申请号：US15247015
申请日：2016-08-25
Applicant: FUJITSU LIMITED
Inventor： Daisuke JITSUKAWA , YOSHIHIRO KAWASAKI , KENJI SUDA
CPC classification number: H04W8/22 , H04L1/1812 , H04L1/1825 , H04W52/0212 , H04W52/0216 , H04W52/146 , H04W52/365 , H04W52/367 , H04W52/58 , Y02D70/1262 , Y02D70/23
Abstract: A wireless communications system includes a base station configured to switch a first state of storing to control information transmitted to a terminal, a value instructing a transmission power of the terminal, and a second state of storing to the control information, a value instructing a transmission count of multiple transmissions of a same data by the terminal; and the terminal configured to switch a third state of adjusting the transmission power based on the value stored to the control information received from the base station in the first state, and a fourth state of adjusting the transmission count of multiple transmissions of the same data by the terminal, based on the value stored to the control information received from the base station in the second state.
Abstract translation: 无线通信系统包括基站，被配置为将第一存储状态切换到发送到终端的控制信息，指示终端的发送功率的值和向控制信息存储的第二状态，指示发送的值 由终端对相同数据的多个传输的计数; 并且所述终端被配置为基于在所述第一状态下基于从所述基站接收的控制信息存储的值来切换调整所述发送功率的第三状态，以及第四状态，通过所述第一状态来调整所述相同数据的多个发送的发送计数 终端基于存储在从第二状态的从基站接收到的控制信息的值。
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公开(公告)号：US20140211717A1
公开(公告)日：2014-07-31
申请号：US14228846
申请日：2014-03-28
Applicant: FUJITSU LIMITED
Inventor： Daisuke JITSUKAWA
CPC classification number: H04W16/14 , H04L1/1861 , H04L5/0035 , H04L5/0039 , H04L5/0053 , H04L5/006 , H04L5/0073 , H04W28/16 , H04W72/1226
Abstract: A wireless communication system 1 performs inter-cell coordination control that coordinates a pico base station 100 and a macro base station 200 with each other and transmits a signal to a mobile station 10 of a picocell. The pico base station 100 includes a controller 100a and a communication unit 100b. The controller 100a interleaves resources of an E-PDCCH of the picocell corresponding to a predetermined resource unit based on a coordinated area ID that is an identifier common to the pico base station 100 and the macro base station 200. The communication unit 100b transmits a control signal to the mobile station 10 of the picocell using a first resource of the E-PDCCH of the picocell that corresponds to at least a part of the predetermined resource unit and is to be decoded by the mobile station 10 of the picocell.
Abstract translation: 无线通信系统1执行将微微基站100和宏基站200彼此协调的小区间协调控制，并将信号发送到微微小区的移动站10。 微微基站100包括控制器100a和通信单元100b。 控制器100a基于作为微微基站100和宏基站200公共的标识符的协调区域ID，对与预定资源单元相对应的微微小区的E-PDCCH的资源进行交织。通信单元100b发送控制 使用对应于预定资源单元的至少一部分并且由微微小区的移动站10解码的微微小区的E-PDCCH的第一资源向微微小区的移动站10发送信号。
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3.发明公开公开(公告)号：US20240171255A1
公开(公告)日：2024-05-23
申请号：US18234200
申请日：2023-08-15
Applicant: Fujitsu Limited
Inventor： Kazuto SATO , Daisuke JITSUKAWA , Shin HOSOKAWA , Takato EZAKI
IPC: H04B7/08 , H04B7/0456
CPC classification number: H04B7/0857 , H04B7/0486
Abstract: A communication apparatus that communicates with a terminal device using a multi-input multi-output (MIMO) data transfer method includes: a memory; and a processor coupled to the memory and configured to: estimate a reception signal to interference ratio (SIR) of a wireless propagation path between the communication apparatus and the terminal device; acquire an SIR offset value for a transmission rank based on a state of occurrence of transfer errors; and switch the transmission rank based on the reception SIR and an SIR offset value for the transmission rank.
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公开(公告)号：US20160381694A1
公开(公告)日：2016-12-29
申请号：US15259774
申请日：2016-09-08
Applicant: FUJITSU LIMITED
Inventor： Tetsuya YANO , Michiharu Nakamura , YOSHINORI TANAKA , Kotaro Shiizaki , Daisuke JITSUKAWA , Hongyang CHEN , Yoshiaki Ohta , KENJI SUDA
IPC: H04W72/10
Abstract: A wireless system includes a plurality of terminals and a wireless base station. Each of the plurality of terminals determines a priority of a local terminal related to transmission of a certain signal according to a certain rule when the certain signal is not received from the wireless base station.
Abstract translation: 无线系统包括多个终端和无线基站。 当没有从无线基站接收到某个信号时，多个终端中的每个终端根据某个规则来确定与某个信号的传输有关的本地终端的优先级。
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5.发明申请WIRELESS COMMUNICATION METHOD, WIRELESS COMMUNICATION SYSTEM, WIRELESS STATION, AND WIRELESS TERMINAL 有权无线通信方法，无线通信系统，无线站和无线终端公开(公告)号：US20150304959A1
公开(公告)日：2015-10-22
申请号：US14722803
申请日：2015-05-27
Applicant: FUJITSU LIMITED
Inventor： Daisuke JITSUKAWA
CPC classification number: H04W52/16 , H04B7/024 , H04J11/0053 , H04L5/0035 , H04L5/0053 , H04W16/28 , H04W52/10 , H04W52/146 , H04W52/241 , H04W52/242 , H04W52/243 , H04W52/245 , H04W52/40 , H04W72/0406 , H04W92/20
Abstract: A wireless communication method including: transmitting a first control signal from a connected wireless station to a wireless terminal, the connected wireless station being one of a plurality of wireless stations that is connected to the wireless terminal, the first control signal relating to a communication level between the wireless terminal and at least one wireless station that is selected from among the plurality of the wireless station, and controlling, by the wireless terminal that receives the first control signal, a transmission power of a transmission signal to the selected at least one wireless station based on the received first control signal.
Abstract translation: 一种无线通信方法，包括：将来自连接的无线站的第一控制信号发送到无线终端，所连接的无线站是连接到无线终端的多个无线站中的一个，与通信级有关的第一控制信号 在所述无线终端与从所述多个所述无线站中选择的至少一个无线站之间，并且通过所述无线终端接收所述第一控制信号，将所述发送信号的发送功率控制在所选择的至少一个无线 基于接收到的第一控制信号的站。
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Patent Agency Ranking
公开(公告)号：US20130251059A1
公开(公告)日：2013-09-26
申请号：US13901021
申请日：2013-05-23
Applicant: FUJITSU LIMITED
Inventor： Daisuke JITSUKAWA , Hiroyuki SEKI
IPC: H04L27/26
CPC classification number: H04L27/261 , H04B7/04 , H04L1/0001 , H04L5/0023 , H04L5/0028 , H04L5/0037 , H04L5/0048 , H04W48/08 , H04W88/08
Abstract: When performing communication with a mobile station using MIMO-OFDM communication, a base station uses multiple input multiple output (MIMO) communication, which is multiple data stream transmission, to transmit data and pilot signals in a case where the communication environment of the mobile station is good, or uses single input multiple output (SIMO) communication, which is single data stream transmission, in a case where the communication environment of the mobile station is poor. When performing that SIMO communication, the base station performs control so that pilot signals from a specified cell that are used in channel estimation in single data stream transmission and pilot signals from adjacent cells that are used in channel estimation in single data stream transmission do not overlap in the frequency direction and/or time axis direction.
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公开(公告)号：US20130182646A1
公开(公告)日：2013-07-18
申请号：US13790029
申请日：2013-03-08
Applicant: FUJITSU LIMITED
Inventor： Kotaro SHIIZAKI , Hiroyuki SEKI , Kenji SUDA , Daisuke JITSUKAWA
IPC: H04W24/02
CPC classification number: H04W24/02 , H04L1/0003 , H04L1/0009 , H04L1/0028 , H04L1/0031 , H04L1/0038 , H04L1/0079 , H04L1/0088
Abstract: A wireless communication system including a transmitting and receiving device that performs communications with the transmitting device, using a radio frame containing control information and data, wherein the transmitting device includes: a first generating unit that generates first control information able to be estimated by the receiving device; a second generating unit that generates second control information used for control of communication from the receiving device to the transmitting device and unable to be estimated by the receiving device; a multiplexing unit that multiplexes the control and data information so that the first control information is allocated in the control information and the second control information is allocated in the data in the radio frame; a transmitting unit a signal multiplexed by the multiplexing unit; the receiving device includes a receiving unit that receives the signal wherein the second control information is allocated in the data from the transmitting device.
Abstract translation: 一种无线通信系统，包括使用包含控制信息和数据的无线帧与所述发送装置进行通信的发送和接收装置，其中，所述发送装置包括：第一生成单元，其生成能够由所述接收来估计的第一控制信息 设备; 第二生成单元，其生成用于从所述接收装置到所述发送装置的通信的控制的第二控制信息，并且不能被所述接收装置估计; 复用单元，其将控制信息和数据信息进行多路复用，使得在控制信息中分配第一控制信息，并将第二控制信息分配给无线电帧中的数据; 发送单元，由复用单元复用的信号; 接收装置包括接收单元，接收单元，其接收来自发送设备的数据中分配了第二控制信息的信号。
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8.发明申请公开(公告)号：US20180102824A1
公开(公告)日：2018-04-12
申请号：US15835611
申请日：2017-12-08
Applicant: FUJITSU LIMITED
Inventor： Daisuke JITSUKAWA , TAKASHI DATEKI , Hiroyuki Seki
IPC: H04B7/06
Abstract: 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.
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9.发明申请公开(公告)号：US20170272180A1
公开(公告)日：2017-09-21
申请号：US15461124
申请日：2017-03-16
Applicant: FUJITSU LIMITED
Inventor： Daisuke JITSUKAWA , Takashi Dateki
CPC classification number: H04B17/21 , H04B7/024 , H04B7/0617 , H04B17/11 , H04B17/12 , H04B17/14 , H04L5/0023 , H04L5/1461 , H04L5/1469
Abstract: According to one aspect, a base station that is connected to a plurality of transmission and reception points includes a calibrator. The calibrator calculates calibration coefficients to be multiplied on weights in beamforming communication at each of a plurality of transmission and reception points based on the beamforming communication at each of a plurality of transmission and reception points.
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公开(公告)号：US20170230967A1
公开(公告)日：2017-08-10
申请号：US15085723
申请日：2016-03-30
Applicant: FUJITSU LIMITED
Inventor： Daisuke JITSUKAWA , Hiroyuki SEKI
CPC classification number: H04W72/0446 , H04L5/00 , H04W72/0413 , H04W72/042 , H04W72/1273
Abstract: A base station includes a scheduler which allocates a first radio resource and a second radio resource while the first radio resource is used to transmit a control channel signal from a wireless terminal, and the second radio resource is used to transmit from the wireless terminal a first reference signal corresponding to the control channel signal even when the wireless terminal does not transmit the control channel signal by using the first radio resource.
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