公开(公告)号：US20200178219A1

公开(公告)日：2020-06-04

申请号：US16785189

申请日：2020-02-07

Applicant: SUN PATENT TRUST

Inventor： Masayuki HOSHINO ,  Akihiko NISHIO ,  Seigo NAKAO ,  Daichi IMAMURA ,  Yasuaki YUDA

IPC: H04W72/04 ,  H04W24/10 ,  H04W72/12 ,  H04B17/24 ,  H04B17/00 ,  H04L1/00 ,  H04L5/00 ,  H04B7/06

Abstract: To suppress concentration of channel quality information requests and reports in a case of discontinuously transmitting reference signals at specific resources in a time domain, and thereby preventing degradation in throughput. A transmission apparatus transmits an instruction of CSI request distributed for each reception apparatus in a subframe concurrently with or earlier than a reference signal CSI-RS to each of reception apparatuses. Each of the reception apparatuses detects the CSI request from the transmission apparatus and calculates CSI from a channel estimation value of CSI-RS received thereafter. Then, the reception apparatus identifies CSI report subframe of the own apparatus from CSI report interval information of a given time interval notified in advance, the subframe in which the CSI request is detected and transmission timing of CSI-RS, and transmits a feedback signal including CSI report value by using PUSCH at the timing of the CSI report subframe.

公开(公告)号：US20200177332A1

公开(公告)日：2020-06-04

申请号：US16709488

申请日：2019-12-10

Applicant: Sun Patent Trust

Inventor： Masayuki HOSHINO ,  Seigo NAKAO ,  Daichi IMAMURA

IPC: H04L5/00 ,  H04J11/00 ,  H04L1/04 ,  H04L1/00

Abstract: A data alignment method capable of preventing degradation in demodulation performance due to variation in signal qualities when a data signal to which a Turbo code is applied is transmitted simultaneously from a plurality of cells. The method divides signal components to be used for data alignment into resources common to all the cells and resources dependent on the cells and transmits encoded and rate-matched data with the first half thereof aligned to the resources common to all the cells and the second half thereof aligned to the resources dependent on the cells.

公开(公告)号：US20190222341A1

公开(公告)日：2019-07-18

申请号：US16368206

申请日：2019-03-28

Applicant: Sun Patent Trust

Inventor： Zhi Zhang ,  Ming XU ,  Masayuki HOSHINO ,  Seigo NAKAO ,  Daichi IMAMURA

IPC: H04J13/00 ,  H04L5/00 ,  H04L12/26 ,  H04J13/18 ,  H04J13/12

CPC classification number: H04J13/004 ,  H04J13/0048 ,  H04J13/12 ,  H04J13/18 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0026 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0066 ,  H04L43/087

Abstract: The present disclosure provides an orthogonal codes based code division multiplexing method of performing the code division multiplexing of demodulation reference signals in multiple layers of resource blocks by using orthogonal matrices, the method comprising: changing the order of chips in particular rows of a first orthogonal matrix to obtain a second orthogonal matrix with the changed order of chips; and multiplying the chips in respective rows of the second orthogonal matrix by the demodulation reference signals in corresponding layers of resource blocks correspondingly in the time direction to obtain code division multiplexing signals. The technical scheme of the present disclosure can improve the power jitter situation of downlink signals on the time, thereby the usage efficiency of the power amplifier at the base station side can be improved.

公开(公告)号：US20180343668A1

公开(公告)日：2018-11-29

申请号：US16053241

申请日：2018-08-02

Applicant: SUN PATENT TRUST

Inventor： Yoshihiko OGAWA ,  Akihiko NISHIO ,  Daichi IMAMURA ,  Seigo NAKAO ,  Masayuki HOSHINO ,  Takashi IWAI ,  Sadaki FUTAGI

IPC: H04W72/12 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W28/06 ,  H04W84/04

CPC classification number: H04W72/1289 ,  H04L1/00 ,  H04L1/0004 ,  H04L1/0041 ,  H04L1/0045 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0041 ,  H04L5/006 ,  H04L5/0064 ,  H04L5/0092 ,  H04L27/2601 ,  H04L27/2607 ,  H04L27/2614 ,  H04L27/2636 ,  H04L27/2647 ,  H04W28/06 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/0466 ,  H04W72/0473 ,  H04W72/12 ,  H04W72/1268 ,  H04W84/042

Abstract: A wireless communication base station device, terminal device, and method have reduced signaling while maintaining high scheduling gain. A judgment unit pre-stores a correspondence between the number of code words and the number of clusters to reduce the maximum value for the number of clusters allocated to each terminal as the number of code words increases, and thus determines the maximum value for the number of clusters based on the number of code words acquired. Based on the number of code words for a transmission signal from a terminal, an estimated value for the reception quality, and the maximum value for the number of clusters that is output by the judgment unit, a scheduling unit schedules the allocation of the transmission signal transmitted by each terminal to a transmission band frequency (frequency resource) so as not to exceed the maximum value for the number of clusters.

公开(公告)号：US20170374678A1

公开(公告)日：2017-12-28

申请号：US15698103

申请日：2017-09-07

Applicant: SUN PATENT TRUST

Inventor： Yoshihiko OGAWA ,  Akihiko NISHIO ,  Daichi IMAMURA ,  Seigo NAKAO ,  Masayuki HOSHINO ,  Takashi IWAI ,  Sadaki FUTAGI

IPC: H04W72/12 ,  H04L5/00 ,  H04W72/04 ,  H04L1/00 ,  H04L27/26 ,  H04W84/04 ,  H04W28/06

CPC classification number: H04W72/1289 ,  H04L1/00 ,  H04L1/0004 ,  H04L1/0041 ,  H04L1/0045 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0041 ,  H04L5/006 ,  H04L5/0064 ,  H04L5/0092 ,  H04L27/2601 ,  H04L27/2607 ,  H04L27/2614 ,  H04L27/2636 ,  H04L27/2647 ,  H04W28/06 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/0466 ,  H04W72/0473 ,  H04W72/12 ,  H04W72/1268 ,  H04W84/042

Abstract: A wireless communication base station device, terminal device, and method have reduced signaling while maintaining high scheduling gain. A judgment unit pre-stores a correspondence between the number of code words and the number of dusters to reduce the maximum value for the number of dusters allocated to each terminal as the number of code words increases, and thus determines the maximum value for the number of clusters based on the number of code words acquired. Based on the number of code words for a transmission signal from a terminal, an estimated value for the reception quality, and the maximum value for the number of clusters that is output by the judgment unit, a scheduling unit schedules the allocation of the transmission signal transmitted by each terminal to a transmission band frequency (frequency resource) so as not to exceed the maximum value for the number of clusters

公开(公告)号：US20250126544A1

公开(公告)日：2025-04-17

申请号：US19000175

申请日：2024-12-23

Applicant: Sun Patent Trust

Inventor： Yoshihiko OGAWA ,  Seigo NAKAO ,  Akihiko NISHIO ,  Masayuki HOSHINO ,  Daichi IMAMURA ,  Atsushi SUMASU

IPC: H04W48/02 ,  H04B7/0413 ,  H04L1/00 ,  H04L1/1607 ,  H04L1/1829 ,  H04L1/1867 ,  H04L5/00 ,  H04W28/04 ,  H04W48/12

Abstract: An integrated circuit includes circuitry, which, in operation, controls transmitting downlink data to a terminal apparatus; receiving a plurality of transport blocks which are transmitted in a same time period using a same frequency band in a spatial multiplexing scheme, wherein a same acknowledgement information (ACK/NACK) relating to an error detection result of the downlink data is scrambled with different scrambling schemes respectively for the plurality of transport blocks and the respectively scrambled ACK/NACK is multiplexed with data on respective ones of the plurality of transport blocks, and channel quality information (CQI) of a downlink channel is multiplexed with the data on only one transport block of the plurality of transport blocks by the terminal apparatus; and extracting the ACK/NACK and the CQI from the received plurality of transport blocks.

公开(公告)号：US20240215035A1

公开(公告)日：2024-06-27

申请号：US18598987

申请日：2024-03-07

Applicant: Sun Patent Trust

Inventor： Akihiko NISHIO ,  Daichi IMAMURA

IPC: H04W72/21 ,  H04B1/713 ,  H04L1/00 ,  H04L5/00 ,  H04W72/20 ,  H04W72/23

CPC classification number: H04W72/21 ,  H04B1/713 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0029 ,  H04L1/0072 ,  H04L5/0048 ,  H04L5/0055 ,  H04W72/20 ,  H04W72/23 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0091

Abstract: Provided are a communication device and an SRS transmission method capable of reducing the possibility of a difference in recognition between the presence or absence of an SRS transmission between a base station and a terminal or of an SRS resource so as to prevent degradation of system throughput. At a terminal (200), a reception processing unit (203) detects control information indicating whether or not to request transmission of a sounding reference signal (SRS), whereupon a transmission signal forming unit (207) transmits an A-SRS by way of control by a transmission control unit (206) on the basis of control information. The transmission control unit (206) determines whether or not to execute SRS transmission on the basis of an “SRS Transmission Execution Rule” and the reception status of trigger information.

公开(公告)号：US20240163044A1

公开(公告)日：2024-05-16

申请号：US18417906

申请日：2024-01-19

Applicant: Sun Patent Trust

Inventor： Hui TONG ,  Ming XU ,  Masayuki HOSHINO ,  Daichi IMAMURA

IPC: H04L5/00 ,  H04B7/06 ,  H04W16/14 ,  H04W72/04 ,  H04W72/044 ,  H04W72/541 ,  H04W72/542

CPC classification number: H04L5/0048 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0639 ,  H04L5/0051 ,  H04L5/0055 ,  H04L5/0057 ,  H04W16/14 ,  H04W72/04 ,  H04W72/046 ,  H04W72/0473 ,  H04W72/541 ,  H04W72/542 ,  H04W72/0453 ,  Y02D30/70

Abstract: A communication apparatus includes a receiver and a transmitter. The receiver, in operation, receives from a neighboring cell a reference signal mapped to at least one first resource element. No signal is received from a serving cell on the at least one first resource element. The transmitter, in operation, transmits to a base station measurement information obtained based on the reference signal.

公开(公告)号：US20240155632A1

公开(公告)日：2024-05-09

申请号：US18415731

申请日：2024-01-18

Applicant: Sun Patent Trust

Inventor： Yoshiko SAITO ,  Ayako HORIUCHI ,  Seigo NAKAO ,  Akihiko NISHIO ,  Daichi IMAMURA ,  Alexander GOLITSCHEK EDLER VON ELBWART ,  Sujuan FENG

IPC: H04W72/23 ,  H04J11/00 ,  H04L5/00

CPC classification number: H04W72/23 ,  H04J11/0079 ,  H04L5/001 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0094

Abstract: A communication apparatus has a receiver and a decoder. The receiver receives a control signal including first downlink control information and second downlink control information, and receives decoding area information that indicates whether the extended Physical Downlink Control Channel (PDCCH) should be decoded for each of a plurality of terminal apparatuses. The decoder decodes each of a plurality of first mapping candidates in the PDCCH area or decodes each of the plurality of first mapping candidates in the PDCCH area and each of the plurality of second mapping candidates in the extended PDCCH. A number of the second mapping candidates included in the user-specific search space equals to or is more than a number of the first mapping candidates included in the common search space.

公开(公告)号：US20230117146A1

公开(公告)日：2023-04-20

申请号：US18068385

申请日：2022-12-19

Applicant: Sun Patent Trust

Inventor： Hui TONG ,  Ming XU ,  Masayuki HOSHINO ,  Daichi IMAMURA

IPC: H04L5/00 ,  H04W16/14 ,  H04W72/541 ,  H04W72/542 ,  H04W72/04 ,  H04B7/06 ,  H04W72/044

Abstract: A communication apparatus includes a receiver and a transmitter. The receiver, in operation, receives from a neighboring cell a reference signal mapped to at least one first resource element. No signal is received from a serving cell on the at least one first resource element. The transmitter, in operation, transmits to a base station measurement information obtained based on the reference signal.