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公开(公告)号：US09048972B2
公开(公告)日：2015-06-02
申请号：US14294762
申请日：2014-06-03
Inventor： Takashi Iwai , Daichi Imamura , Akihiko Nishio , Yoshihiko Ogawa , Masaru Fukuoka
CPC classification number: H04J11/0053 , H04B1/713 , H04B7/024 , H04B17/354 , H04J13/0062 , H04J13/0074 , H04L1/0026 , H04L1/20 , H04L5/0007 , H04L5/0035 , H04L5/0048 , H04L5/0051 , H04L5/0073 , H04L5/0091
Abstract: Provided are a wireless communication apparatus and a reference signal generating method, wherein inter-cell interference is reduced inside and outside a CoMP set. A CoMP mode setting unit (101) sets whether the terminal (100) thereof is a CoMP terminal or a Non-CoMP terminal. When the terminal (100) is set as a Non-CoMP terminal, the hopping pattern calculating unit (104) calculates a ZC sequence number to be used as the transmission timing, from among all the ZC sequence numbers that can be used within the system. When the terminal (100) is set as a CoMP terminal, the hopping pattern calculating unit (104) calculates a ZC sequence number to be used as the transmission timing, by hopping the ZC sequence numbers to be used within the CoMP set. A ZC sequence generating unit (105) generates a ZC sequence to be used as an SRS, using the calculated ZC sequence number.
Abstract translation: 提供了一种无线通信装置和参考信号生成方法，其中在CoMP集合内部和外部减小小区间干扰。 CoMP模式设置单元（101）设置其终端（100）是CoMP终端还是非CoMP终端。 当终端（100）被设置为非CoMP终端时，跳频图案计算单元（104）从系统中可以使用的所有ZC序列号中计算出用作发送定时的ZC序列号 。 当终端（100）被设置为CoMP终端时，跳频图案计算单元（104）通过跳转在CoMP集合内使用的ZC序列号来计算要用作发送定时的ZC序列号。 ZC序列生成部（105）使用计算出的ZC序列号，生成要用作SRS的ZC序列。
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公开(公告)号：US12294542B2
公开(公告)日：2025-05-06
申请号：US17769296
申请日：2020-09-04
Inventor： Takayuki Nakano , Hiroyuki Kanaya , Yoshio Urabe , Ryutaro Hashi , Jun Minotani , Takashi Iwai , Tomofumi Takata
Abstract: This wireless communication control device is a first wireless control device provided with: a control circuit that causes the waveform of a reference signal transmitted to a wireless communication device in coordination with a second wireless communication control device to differ, either in the frequency domain or the time domain, from the waveform of a reference signal transmitted to the wireless communication device by the second wireless communication control device; and a transmission circuit that transmits the reference signal.
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公开(公告)号：US12212509B2
公开(公告)日：2025-01-28
申请号：US18654764
申请日：2024-05-03
Inventor： Takashi Iwai , Hidetoshi Suzuki , Quan Kuang , Tomofumi Takata
IPC: H04L5/00
Abstract: Provided is a terminal which appropriately transmits and receives signals when operating in an unlicensed band. A terminal (200) is provided with: a mapping unit (207) for allocating a signal to a resource on the basis of control information indicating allocation of groups among a plurality of groups obtained by grouping a plurality of blocks into which a frequency band has been divided, and allocation of resources in the blocks; and a transmitting unit (209) for transmitting the signal.
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公开(公告)号：US12150111B2
公开(公告)日：2024-11-19
申请号：US17627616
申请日：2020-07-10
Inventor： Takashi Iwai , Tomofumi Takata , Yoshio Urabe , Takayuki Nakano , Jun Minotani
IPC: H04W72/121 , H04W72/0453 , H04W72/1263 , H04W72/23
Abstract: The present invention enables more efficient control of Multi-AP coordination. A base station, according to the present invention, comprises: a control circuit that generates shared information that is shared among a plurality of users and includes information pertaining to unassigned resources, and individual user information specific to each of the plurality of users; and a transmission circuit that transmits a control signal comprising the shared information and the individual user information.
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公开(公告)号：US12108373B2
公开(公告)日：2024-10-01
申请号：US18330118
申请日：2023-06-06
Inventor： Takashi Iwai , Daichi Imamura , Tomofumi Takata , Yoshihiko Ogawa
IPC: H04W72/0446 , H04J13/00 , H04J13/22 , H04W72/044 , H04W72/0453
CPC classification number: H04W72/0446 , H04J13/0055 , H04J13/0062 , H04J13/22 , H04W72/0453 , H04W72/0466
Abstract: It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce correlations between different sequential groups. This method comprises the steps of setting a standard sequence with a standard sequence length and a standard sequence number in a step, setting a threshold value in accordance with an RB number in a step, setting a sequence length corresponding to RB number in a step, judging whether ¦r/N−rb/Nb¦=Xth(m) is satisfied in a step, including a plurality of Zadoff-Chu sequences with a sequence number and a sequence length in a sequence group in a step if the judgment is positive, and allocating the sequence group to the same cell in a step.
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Patent Agency Ranking
106.发明授权公开(公告)号：US12088447B2
公开(公告)日：2024-09-10
申请号：US18319298
申请日：2023-05-17
Inventor： Takashi Iwai , Tomohumi Takata , Hidetoshi Suzuki , Tetsuya Yamamoto , Quan Kuang
CPC classification number: H04L27/2613 , H04J13/0062 , H04L5/0051 , H04L27/26025
Abstract: When a plurality of the subcarrier spacing values are applied, a reference signal is generated by using a sequence having a sequence length corresponding to a first ratio of a first subcarrier spacing set for transmission data to the maximum settable subcarrier spacing. The sequence of the reference signal is mapped to a frequency resource at mapping intervals in accordance with a second ratio which is the reciprocal of the first ratio, and the transmission data and the reference signal are transmitted.
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公开(公告)号：US12075424B2
公开(公告)日：2024-08-27
申请号：US18457953
申请日：2023-08-29
Inventor： Tetsuya Yamamoto , Hongchao Li , Hidetoshi Suzuki , Takashi Iwai
Abstract: Provided is a terminal that can appropriately transmit an uplink signal. In a terminal (200), a control unit (211) determines a processing mode with respect to uplink data and uplink control information according to a requirement for at least one of uplink data and uplink control information when transmission of an uplink data channel that includes the uplink data and transmission of an uplink control channel that includes the uplink control information temporally overlap. A transmission unit (218) transmits the at least one of the uplink data and the uplink control information on the basis of the determined processing mode.
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公开(公告)号：US12052769B2
公开(公告)日：2024-07-30
申请号：US18352624
申请日：2023-07-14
Inventor： Takashi Iwai , Tomohumi Takata , Atsushi Matsumoto
IPC: H04W74/0833 , H04L5/00 , H04W72/1268
CPC classification number: H04W74/0833 , H04L5/0039 , H04W72/1268
Abstract: A communication apparatus in the present disclosure comprises an AID generator, a Trigger frame generator, and a wireless transmitter/receiver. When a Trigger Type in a trigger frame is an RA trigger, the AID generator generates, as information for an AID12 subfield, information that is different from an AID. The Trigger frame generator generates a RA variant Trigger frame when the Trigger Type in the trigger frame is an RA trigger, and sets, in the AID12 subfield included in the RA variant Trigger frame, the information output from the AID generator. The wireless transmitter/receiver transmits the Trigger frame, generated by the Trigger frame generator, to a terminal.
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公开(公告)号：US12022467B2
公开(公告)日：2024-06-25
申请号：US17264480
申请日：2019-03-25
Inventor： Tetsuya Yamamoto , Hongchao Li , Hidetoshi Suzuki , Takashi Iwai
IPC: H04W72/21 , H04W72/0446
CPC classification number: H04W72/21 , H04W72/0446
Abstract: A terminal with which it is possible to appropriately transmit uplink control information. In a terminal (200), a control unit (211) determines a processing format for a response signal or for an uplink control channel used for transmission of the response signal, in accordance with request conditions for a response signal of downlink data. A transmission unit (216) uses the uplink control channel to transmit the response signal on the basis of the determined processing format.
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公开(公告)号：US12010725B2
公开(公告)日：2024-06-11
申请号：US18356000
申请日：2023-07-20
Inventor： Tomoya Nunome , Takashi Iwai , Yoshio Urabe
CPC classification number: H04W74/0816 , H04W74/006 , H04W74/08 , H04W84/12 , H04W52/245
Abstract: A wireless station that belongs to a communication cell includes a receiver which, in operation, receives a trigger frame transmitted from an access point that belongs to an interference cell and a controller which, in operation, determines, based on at least one parameter included in the trigger frame and reception power value of the trigger frame received at the wireless station, whether the wireless station is allowed to transmit to other wireless station that belongs to the communication cell, wherein the at least one parameter includes a value set based on transmit power value of the trigger frame transmitted from the access point.
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