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公开(公告)号：US20180242358A1
公开(公告)日：2018-08-23
申请号：US15554717
申请日：2016-03-10
Applicant: SHARP KABUSHIKI KAISHA
Inventor： HIROMICHI TOMEBA , TOMOKI YOSHIMURA , TAKASHI ONODERA , YASUHIRO HAMAGUCHI
CPC classification number: H04W74/0808 , H04W52/04 , H04W52/346 , H04W84/12
Abstract: Provided are a terminal apparatus and a communication method that are able to improve communication quality and an acquisition rate of transmission opportunity in a communication system requiring carrier sense. The terminal apparatus of the invention includes a reception unit that receives a frame and changes a CCA method on the basis of information included in the frame. The CCA method includes a method of setting a CCA level as a value other than a predetermined value of the CCA level. The reception unit has a function of performing carrier sense and a method of changing the CCA level includes a method of setting a period in which the carrier sense is performed as a value other than a value of a predetermined carrier sense period.
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公开(公告)号：US20180176952A1
公开(公告)日：2018-06-21
申请号：US15579572
申请日：2016-06-02
Applicant: SHARP KABUSHIKI KAISHA
Inventor： HIROMICHI TOMEBA , TOMOKI YOSHIMURA , YASUHIRO HAMAGUCHI
CPC classification number: H04W74/085 , H04L61/6022 , H04L69/323 , H04W74/0816 , H04W84/12
Abstract: A decrease in access rate to a wireless medium caused by an exposed terminal apparatus is improved. A wireless communication apparatus of the present invention includes a reception unit that receives a frame indicating start of a medium protection operation, and acquires, from the frame indicating the start of the medium protection operation, BSS identification information for identifying a BSS to which a transmission-source wireless communication apparatus of the frame indicating the start of the medium protection operation belongs, and a transmission unit that determines whether or not to start a transmission operation of a frame addressed to another wireless communication apparatus belonging to a BSS to which the wireless communication apparatus belongs based on the BSS identification information.
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公开(公告)号：US20180152959A1
公开(公告)日：2018-05-31
申请号：US15570098
申请日：2016-04-25
Applicant: SHARP KABUSHIKI KAISHA
Inventor： TOMOKI YOSHIMURA , HIROMICHI TOMEBA , YASUHIRO HAMAGUCHI
IPC: H04W72/12 , H04W72/04 , H04B7/0452
CPC classification number: H04W72/1268 , H04B7/0452 , H04W16/28 , H04W52/146 , H04W52/50 , H04W72/0413 , H04W72/0446 , H04W72/0473 , H04W72/1284 , H04W74/0808 , H04W84/12
Abstract: A method that carries out uplink multiple access while reducing complexity in processing accompanying exchange of control information. A terminal device that performs uplink multiple access communication includes a reception unit that receives a frame including uplink multiple access connection information, a first autonomous decentralized control unit that instructs securing time of a wireless resource, and a second autonomous decentralized control unit that instructs securing time of a wireless resource after reception of a frame including the uplink multiple access connection information. The terminal device is instructed securing time of the wireless resource by the first autonomous decentralized control unit in a case that a frame including the uplink multiple access connection information is not received. Securing time of the wireless resource is instructed by the second autonomous decentralized control unit in a case that a frame including the uplink multiple access connection information is received.
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84.发明申请
公开(公告)号：US20180124603A1
公开(公告)日：2018-05-03
申请号：US15563896
申请日：2016-03-25
Applicant: Sharp Kabushiki Kaisha
Inventor： HIROMICHI TOMEBA , RYOTA YAMADA , KATSUYA KATO , YASUHIRO HAMAGUCHI
CPC classification number: H04W12/06 , G06K19/07 , H04W28/18 , H04W28/24 , H04W48/18 , H04W72/04 , H04W72/087
Abstract: There are provided a communication method, an authentication method, a terminal apparatus, a communication system, and an authentication apparatus for improving communication quality and a communication opportunity capture rate under an environment in which terminal apparatuses cluster within a two-dimensionally narrow range. The communication method of this invention is a communication method for providing a communication service associated with a principal service to a terminal apparatus, including a step of providing the communication service on the basis of information on the principal service provided to the terminal apparatus. The information on the principal service provided to the terminal apparatus is a grade of the principal service.
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公开(公告)号：US20180097575A1
公开(公告)日：2018-04-05
申请号：US15553182
申请日：2016-02-24
Applicant: SHARP KABUSHIKI KAISHA
Inventor： HIROMICHI TOMEBA , RYOTA YAMADA , KATSUYA KATO , JUNGO GOTO , OSAMU NAKAMURA , TOMOKI YOSHIMURA , YASUHIRO HAMAGUCHI
CPC classification number: H04J11/003 , H04J11/005 , H04J11/0086 , H04J13/0007 , H04J2211/008 , H04L1/1819 , H04L1/1896 , H04L5/0091 , H04L27/34 , H04W28/04 , H04W72/04 , H04W72/12
Abstract: Provided are a base station apparatus, a terminal apparatus, and a communication method, in all of which interference is reduced to improve throughput and to increase more opportunity for communication by each terminal apparatus. A terminal apparatus according to the present invention is provided with a function of receiving information relating to a multiplexed state of and information relating to a retransmission state of a transmit signal that is transmitted to the terminal apparatus itself; a function of receiving a non-orthogonal multiplexing signal that results from a base station apparatus non-orthogonally multiplexing at least some of the transmit signal that is transmitted to the terminal apparatus itself and a transmit signal that is transmitted to another terminal apparatus, for transmission, using the same radio resource; and a function of performing demodulation processing based on the information relating to the multiplexed state of the transmit signal that is transmitted to the terminal apparatus itself, and the information relating to the retransmission state of the transmit signal that is transmitted to the terminal apparatus itself.
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公开(公告)号：US20180035390A1
公开(公告)日：2018-02-01
申请号：US15543017
申请日：2016-01-14
Applicant: Sharp Kabushiki Kaisha
Inventor： OSAMU NAKAMURA , JUNGO GOTO , YASUHIRO HAMAGUCHI
CPC classification number: H04W52/262 , H04B1/04 , H04J11/00 , H04L5/005 , H04L27/0008 , H04L27/0012 , H04L27/36 , H04W28/0215 , H04W28/06
Abstract: In downlink non-orthogonal access, favorable transmission characteristics are achieved without significantly increasing the amount of control information. A base station apparatus includes a first modulation symbol generation unit which generates a first modulation symbol, a second modulation symbol generation unit which generates a second modulation symbol in consideration of a bit sequence configuring the first modulation symbol, a power assignment unit which assigns different transmit powers to the first modulation symbol and the second modulation symbol, and a signal addition unit which adds the first modulation symbol and the second modulation symbol.
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公开(公告)号：US20170019901A1
公开(公告)日：2017-01-19
申请号：US15280561
申请日：2016-09-29
Applicant: SHARP KABUSHIKI KAISHA
Inventor： YASUHIRO HAMAGUCHI
CPC classification number: H04W72/0453 , H04L5/001 , H04L5/0039 , H04L5/0044 , H04L5/0053 , H04L5/023 , H04L27/2626 , H04L27/2627 , H04L27/2647 , H04L27/2649 , H04W72/04 , H04W72/0406 , H04W72/0473 , H04W84/12
Abstract: Radio transmission is performed even to a communication party whose bandwidth that can be used for transmission and reception is limited without having an influence of an offset of a DC component. A radio transmitter applied to an OFDMA communication system in which a plurality of different terminals performs communication using OFDM signals at the same time that includes a mapping part that allocates transmission power to each subcarrier, and also selects a subcarrier to which minimum power of the transmission power to be allocated is allocated and modulates transmission data in units of communication slots to output the modulated data; and a transmission part for transmitting radio signals including the modulated data using each of the subcarriers.
Abstract translation: 甚至对可以用于发送和接收的带宽进行限制的通信方也进行无线传输，而不会影响DC分量的偏移。 一种应用于OFDMA通信系统的无线电发射机，其中多个不同终端在同时包括向每个子载波分配发射功率的映射部分同时执行通信，并且还选择发射的最小功率的子载波 分配要分配的功率并以通信时隙为单位调制发送数据，以输出调制数据; 以及发送部，用于使用每个子载波来发送包括调制数据的无线电信号。
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公开(公告)号：US20140355544A1
公开(公告)日：2014-12-04
申请号：US14459061
申请日：2014-08-13
Applicant: SHARP KABUSHIKI KAISHA
Inventor： YASUHIRO HAMAGUCHI
CPC classification number: H04W72/0453 , H04L5/001 , H04L5/0039 , H04L5/0044 , H04L5/0053 , H04L5/023 , H04L27/2626 , H04L27/2627 , H04L27/2647 , H04L27/2649 , H04W72/04 , H04W72/0406 , H04W72/0473 , H04W84/12
Abstract: Radio transmission is performed even to a communication party whose bandwidth that can be used for transmission and reception is limited without having an influence of an offset of a DC component. A radio transmitter applied to an OFDMA communication system in which a plurality of different terminals performs communication using OFDM signals at the same time that includes a mapping part that allocates transmission power to each subcarrier, and also selects a subcarrier to which minimum power of the transmission power to be allocated is allocated and modulates transmission data in units of communication slots to output the modulated data; and a transmission part for transmitting radio signals including the modulated data using each of the subcarriers.
Abstract translation: 甚至对可以用于发送和接收的带宽进行限制的通信方也进行无线传输，而不会影响DC分量的偏移。 一种应用于OFDMA通信系统的无线电发射机，其中多个不同终端在同时包括向每个子载波分配发射功率的映射部分同时执行通信，并且还选择发射的最小功率的子载波 分配要分配的功率并以通信时隙为单位调制发送数据，以输出调制数据; 以及发送部，用于使用每个子载波来发送包括调制数据的无线电信号。
