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公开(公告)号：US10341874B2
公开(公告)日：2019-07-02
申请号：US15318019
申请日：2015-06-10
摘要： There are provided a base station apparatus, a terminal apparatus, and a communication method which are capable of realizing a LTE-A system with improved throughput by performing a CA technology including an unlicensed band while suppressing interference from an existing system. A base station apparatus according to the present invention, which is included in a communication system that applies a communication scheme applied to a first frequency band capable of being used as a dedicated frequency band to a second frequency band different from the first frequency band and is capable of communicating with a terminal apparatus by using the second frequency band and the second frequency band. The base station apparatus: adds at least signal null periods to a frame of a second signal transmitted using the second frequency band; and sets a frame length of a signal frame included in the frame of the second signal transmitted using the second frequency band to be less than a frame length of a signal frame included in the frame of the first signal transmitted using the first frequency band.
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公开(公告)号：US10256885B2
公开(公告)日：2019-04-09
申请号：US15315150
申请日：2015-05-21
IPC分类号： H04B7/06 , H04B7/04 , H04J11/00 , H04L25/02 , H04B7/0417 , H04B7/0452 , H04B7/0426
摘要： A channel estimation unit estimates channel state information to or from a base station device. A feedback information generation unit performs a decomposition process for the channel state information and thereby acquires first decomposition information that includes plural singular values and second decomposition information that includes plural right singular vectors respectively associated with the plural singular values. The feedback information generation unit mutually replaces portions of the plural singular values, thereby acquires first replacement information, and further acquires second replacement information based on the first replacement information and the plural right singular vectors. The feedback information generation unit performs a conversion process for the second replacement information and thereby acquires second conversion information. A radio transmission unit notifies the base station device of the second conversion information.
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公开(公告)号：US09859961B2
公开(公告)日：2018-01-02
申请号：US14783214
申请日：2014-03-24
发明人： Takashi Onodera , Hiromichi Tomeba , Minoru Kubota
IPC分类号： H04W4/00 , H04B7/0456 , H04B7/04 , H04W16/28 , H04B7/0452 , H04W76/02 , H04W76/04
CPC分类号： H04B7/0456 , H04B7/04 , H04B7/0452 , H04W16/28 , H04W76/10 , H04W76/20
摘要： A terminal apparatus can be notified whether an MU-MIMO signal transmitted from a base station apparatus is linear-precoded or nonlinear-precoded by using effective signaling. According to the present invention, the base station apparatus decides whether the nonlinear precoding is used in an own cell, includes the decided nonlinear precoding setting information in system information or a layer 3 message, and notifies the terminal apparatus of the decided nonlinear precoding setting information by using a physical broadcast channel, a physical downlink share channel, or the like. The terminal apparatus performs a demodulation process for user data destined for the own terminal apparatus based on the nonlinear precoding setting information acquired from the notified system information or layer 3 message.
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公开(公告)号：US09641232B2
公开(公告)日：2017-05-02
申请号：US14649938
申请日：2013-11-01
IPC分类号： H04B7/04 , H04W72/08 , H04B7/0456 , H04B7/0452 , H04W16/14 , H04B7/024
CPC分类号： H04B7/0456 , H04B7/024 , H04B7/0452 , H04W16/14 , H04W72/082
摘要： A base station device according to the present invention receives wireless frames transmitted by terminal devices in nearby cells, estimates the state of the propagation channels between the terminal devices in the nearby cells and itself, based on the received signals thereof, and performs precoding on transmission data addressed to terminal devices in its own cell, based on the estimation results of the propagation channel state, and transmits.
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65.发明授权Terminal device, base station device, communication system, reception method, transmission method, and communication method 有权终端设备，基站设备，通信系统，接收方法，传输方式和通信方式公开(公告)号：US09385819B2
公开(公告)日：2016-07-05
申请号：US14769871
申请日：2014-02-25
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08 , H04B15/00 , H04W8/24 , H04B7/04 , H04W76/02
CPC分类号： H04B15/00 , H04B7/0417 , H04B7/0452 , H04J11/005 , H04W8/24 , H04W76/10
摘要： A terminal device according to an aspect of the present invention includes a reception module that receives a control channel and a spatially multiplexed data signal channel, a control signal detection module that extracts, from an output from the reception module, a demodulation control information which is a transmission parameter of a signal that is transmitted to the terminal device, in a data signal channel that is output from the reception module, and assistance control information which is a transmission parameter of a signal that is transmitted to a different terminal device, in the data signal channel that is output from the reception module, a channel estimator that obtains a channel estimate by using a reference signal, a signal detection module that demultiplexes the data signal channel by using the demodulation control information, the assistance control information, and the channel estimate, and a decoding module that decodes a signal that is output by the signal detection module, in which information indicating a rank is included in the assistance control information.
摘要翻译： 根据本发明的一个方面的终端装置包括：接收模块，其接收控制信道和空间复用数据信号信道;控制信号检测模块，其从所述接收模块的输出中提取解调控制信息，所述解调控制信息是 在从接收模块输出的数据信道中发送到终端装置的信号的传输参数，以及作为发送到不同终端装置的信号的传输参数的辅助控制信息，在 从接收模块输出的数据信号信道，通过使用参考信号获取信道估计的信道估计器，通过使用解调控制信息对辅助控制信息和信道进行解复用的信号检测模块 估计，以及解码由信号检测输出的信号的解码模块 n模块，其中指示等级的信息被包括在辅助控制信息中。
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66.发明申请WIRELESS RECEPTION DEVICE, WIRELESS TRANSMISSION DEVICE, WIRELESS COMMUNICATION SYSTEM, PROGRAM, AND INTEGRATED CIRCUIT 审中-公开无线接收设备，无线传输设备，无线通信系统，程序和集成电路公开(公告)号：US20150098402A1
公开(公告)日：2015-04-09
申请号：US14399990
申请日：2013-05-10
CPC分类号： H04L5/0053 , H04B7/04 , H04B7/0417 , H04B7/0452 , H04B7/0456 , H04B7/0697 , H04B7/0851 , H04L25/0204 , H04L25/0224 , H04L25/03891 , H04L25/067
摘要： A wireless reception device of the invention is a wireless reception device that includes a terminal antenna unit 401 having a plurality of antennas and that receives wireless signals having undergone nonlinear precoding and spatial multiplexing from a wireless transmission device and includes a channel estimation unit 403 that is configured to estimate a channel state to and from the wireless transmission device and to output channel state information, based on first reference signals, and to estimate the channel state to and from the wireless transmission device and to output specific equivalent channel state information, based on second reference signals having undergone the nonlinear precoding, and a spatial demultiplexing processing unit 415 that is configured to demodulate desired signals from the received wireless signals, based on the specific equivalent channel state information.
摘要翻译： 本发明的无线接收装置是包括具有多个天线的终端天线单元401，并且从无线发送装置接收经历了非线性预编码和空间复用的无线信号的无线接收装置，并且包括：信道估计单元403， 被配置为基于第一参考信号来估计到无线传输设备的信道状态和输出信道状态信息，并且基于第一参考信号估计到无线传输设备的信道状态和从无线传输设备估计信道状态并输出特定的等效信道状态信息，基于 已经经历了非线性预编码的第二参考信号，以及空间解复用处理单元415，被配置为基于特定的等效信道状态信息来解调来自接收到的无线信号的期望信号。
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67.发明申请WIRELESS TRANSMISSION APPARATUS, WIRELESS RECEPTION APPARATUS, WIRELESS COMMUNICATION SYSTEM, CONTROL PROGRAM AND INTEGRATED CIRCUIT 有权无线传输设备，无线接收设备，无线通信系统，控制程序和集成电路公开(公告)号：US20140146904A1
公开(公告)日：2014-05-29
申请号：US13882556
申请日：2011-10-24
发明人： Takashi Onodera , Hiromichi Tomeba , Shimpei To , Hiroshi Nakano , Alvaro Ruiz Delgado , Minoru Kubota
IPC分类号： H04B7/04
CPC分类号： H04B7/0456 , H04B7/0417 , H04B7/0632 , H04B7/0689 , H04B7/0697 , H04L25/03942
摘要： The present invention switches an interference suppression system between a linear precoding and a nonlinear precoding in accordance with a communication environment. A wireless transmission apparatus is provided with a plurality of transmission antenna units (303), and multiplexes spatially and transmits a plurality of series of data with respect to at least one wireless reception apparatus, and includes a selection unit (307) configured to select any one precoding system from a plurality of types of precoding systems and a precoding unit (315) configured to carry out precoding with respect to the plurality of series of data using the selected precoding system. In addition, the selection unit selects either of a first precoding system carrying out linear processing with respect to the plurality of series of data or a second precoding system carrying out nonlinear processing with respect to the plurality of series of data.
摘要翻译： 本发明根据通信环境在线性预编码和非线性预编码之间切换干扰抑制系统。 一种无线发送装置具备多个发送天线单元（303），在空间上进行多路复用，并相对于至少一个无线接收装置发送多个数据序列，并具有选择单元（307） 一种来自多种类型的预编码系统的预编码系统和预编码单元（315），其被配置为使用所选择的预编码系统对多个数据系列进行预编码。 此外，选择单元选择对多个数据系列进行线性处理的第一预编码系统或对多个数据系列执行非线性处理的第二预编码系统。
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公开(公告)号：US11963264B2
公开(公告)日：2024-04-16
申请号：US17566073
申请日：2021-12-30
IPC分类号： H04W84/12 , H04W28/06 , H04W74/08 , H04W74/0808
CPC分类号： H04W84/12 , H04W28/06 , H04W74/08 , H04W74/0808
摘要： A BSS to which a destination wireless communication apparatus of a physical layer frame belongs is identified, and accuracy of preamble detection is improved by changing a reception operation. A wireless communication apparatus includes a reception unit that detects a frame including information for identifying a BSS, and a control unit that switches between a first operation in a case where the frame is a frame which is associated with a BSS to which the wireless communication apparatus belongs and a second operation in a case where the frame is a frame which is not associated with the BSS to which the wireless communication apparatus belongs. Carrier sensing is not performed in the first operation, and the carrier sensing is performed in the second operation.
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公开(公告)号：US11601246B2
公开(公告)日：2023-03-07
申请号：US17172215
申请日：2021-02-10
发明人： Ryota Yamada , Hiromichi Tomeba
摘要： A base station apparatus includes a downlink reference signal generation unit configured to generate a first demodulation reference signal and a second demodulation reference signal that are reference signals used to demodulate a data signal, and a radio transmitting unit configured to transmit the first demodulation reference signal, the second demodulation reference signal, and control information to the terminal apparatus. The control information includes parameters regarding the first demodulation reference signal and parameters regarding the second demodulation reference signal. The parameters regarding the first demodulation reference signal include an antenna port number. The parameters regarding the second demodulation reference signal include an antenna port number, and a time domain density or a frequency domain density with which demodulation reference signals are mapped into a slot. The first demodulation reference signal is mapped before the second demodulation reference signal in the slot.
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公开(公告)号：US11516847B2
公开(公告)日：2022-11-29
申请号：US17227835
申请日：2021-04-12
摘要： A CCA level is made to be variable efficiently while maintaining the fairness relating to acquisition of a transmission opportunity by wireless terminal apparatuses, and thus efficiency of a radio resource is improved. Provided is a terminal apparatus that performs wireless communication with a base station apparatus, and includes; a MAC frame categorization unit categorizing MAC frames, in each of which media access control header is attached to transmission data, based on a type of MAC frame; and a QoS control unit performing a carrier sense using a first CCA level, in a case where the MAC frame is included in a first category that results from the categorization by the MAC frame categorization unit, and performing the carrier sense using a second CCA level different from the first CCA level, in a case where the MAC frame is included in a second category different from the first category.
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