公开(公告)号：US20200252935A1

公开(公告)日：2020-08-06

申请号：US16853001

申请日：2020-04-20

Applicant: Sun Patent Trust

Inventor： Yoshihiko OGAWA ,  Seigo NAKAO ,  Daichi IMAMURA ,  Akihiko NISHIO ,  Masayuki HOSHINO ,  Katsuhiko HIRAMATSU ,  Kenichi MIYOSHI ,  Yasuaki YUDA ,  Sadaki FUTAGI ,  Takashi IWAI

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26

Abstract: Disclosed are a wireless communication base station device and a division number determination method that improves the frequency diversity effect while maintaining channel estimation accuracy regardless of the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. A determination unit determines the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. Here, the determination unit increases the number of divisions in the frequency domain of the transmission signal from the wireless communication terminal device as the number of pilot blocks included in the transmission signal increases. In addition, a scheduling unit schedules allocation to the frequency resources of the divided transmission signal according to the number of divisions determined by the determination unit.

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：US20190068344A1

公开(公告)日：2019-02-28

申请号：US16154877

申请日：2018-10-09

Applicant: Sun Patent Trust

Inventor： Takashi IWAI ,  Akihiko NISHIO ,  Yoshihiko OGAWA ,  Seigo NAKAO ,  Masayuki HOSHINO

IPC: H04L5/00 ,  H04L12/801 ,  H04J11/00 ,  H04B7/024 ,  H04L23/02 ,  H04J13/00

Abstract: Provided are a radio communication terminal apparatus and a radio transmission method by which intersymbol interference of DM-RS of a CoMP terminal and a Non-CoMP terminal can be reduced. A CoMP set setting unit (102) sets the cell IDs of all cells in the CoMP set in a cell selection unit (104), and a serving cell setting unit (103) sets the cell ID of the serving cell in the cell selection unit (104). The cell selection unit (104) selects the cell ID having a number closest to the cell ID of the serving cell from the cells in the CoMP set. A sequence information calculation unit (106) derives a sequence group number from the selected cell ID, and the sequence information calculation unit (106) calculates a sequence number from the derived sequence group number and a transmission bandwidth of the DM-RS.

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：US20240340211A1

公开(公告)日：2024-10-10

申请号：US18746990

申请日：2024-06-18

Applicant: Sun Patent Trust

Inventor： Michael EINHAUS ,  Alexander GOLITSCHEK EDLER VON ELBWART ,  Joachim LOEHR ,  Masayuki HOSHINO

IPC: H04L27/34 ,  H04L1/00 ,  H04W72/1263 ,  H04W72/20

CPC classification number: H04L27/34 ,  H04L1/0003 ,  H04L1/0016 ,  H04L1/0029 ,  H04W72/1263 ,  H04W72/20 ,  H04L1/0028

Abstract: The present disclosure relates to adaptive modulation and coding scheme selection and signaling in a communication system. In particular, a modulation and coding scheme to be used for transmission of a data is selected from a set of predetermined modulation and coding schemes. The predetermination of the set is performed by selecting the set from a plurality of predefined sets. The sets have the same size, so that a modulation and coding selection indicator signaled to select the modulation and coding scheme may be advantageously applied to any of the selected sets. Moreover, a second set includes schemes with a modulation not covered by the schemes of a first set, and which is of a higher order than any modulation in the first set.

公开(公告)号：US20240171335A1

公开(公告)日：2024-05-23

申请号：US18424484

申请日：2024-01-26

Applicant: Sun Patent Trust

Inventor： Seigo NAKAO ,  Masayuki HOSHINO ,  Atsushi SUMASU ,  Katsuhiko HIRAMATSU

IPC: H04L5/00 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/06 ,  H04L25/02 ,  H04L27/26 ,  H04W74/00

CPC classification number: H04L5/0048 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0682 ,  H04L5/0023 ,  H04L25/0226 ,  H04L25/0228 ,  H04L27/2613 ,  H04L27/2626 ,  H04W74/002 ,  H04W88/02

Abstract: Provided is a radio communication device which can separate propagation paths of antenna ports and improve a channel estimation accuracy even when using virtual antennas. The device includes: a mapping unit which maps a data signal after modulation to a virtual antenna and a virtual antenna; a phase inversion unit which inverts the phase of S0 transmitted from an antenna port in synchronization with a phase inversion unit between the odd-number slot and the even-number slot; the phase inversion unit which inverts the phase of R0 transmitted from the antenna port; a phase inversion unit which inverts the phase of S1 transmitted from an antenna port in synchronization with a phase inversion unit; and the phase inversion unit which inverts the phase of R1 transmitted from an antenna port.