公开(公告)号：US20210211969A1

公开(公告)日：2021-07-08

申请号：US17208704

申请日：2021-03-22

Applicant: Sun Patent Trust

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

IPC: H04W48/02 ,  H04B7/0413 ,  H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04L1/16 ,  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：US20230370188A1

公开(公告)日：2023-11-16

申请号：US18360740

申请日：2023-07-27

Applicant: Sun Patent Trust

Inventor： Yoshihiko OGAWA ,  Akihiko NISHIO ,  Takashi IWAI ,  Seigo NAKAO ,  Daichi IMAMURA ,  Atsushi SUMASU

IPC: H04J11/00 ,  H04B7/0452 ,  H04J13/00 ,  H04J13/18 ,  H04W72/23 ,  H04W72/54 ,  H04B7/06 ,  H04L5/00

CPC classification number: H04J11/003 ,  H04B7/0452 ,  H04J13/0048 ,  H04J13/18 ,  H04W72/23 ,  H04W72/54 ,  H04B7/0689 ,  H04L5/005 ,  H04W88/02

Abstract: A terminal apparatus includes circuitry and a transmitter. The circuitry, in operation, generates a reference signal using a cyclic shift value and an orthogonal sequence, which are associated with each other. The orthogonal sequence is one of two orthogonal sequences corresponding to a first orthogonal sequence [1, 1] and a second orthogonal sequence [1, −1]. The cyclic shift value is one of 12 cyclic shift values ranging from 0 to 11. The transmitter, in operation, transmits the reference signal multiplexed with a data signal. Two of the cyclic shift values having a difference of 6 are respectively associated with the two orthogonal sequences.

公开(公告)号：US20200178156A1

公开(公告)日：2020-06-04

申请号：US16786685

申请日：2020-02-10

Applicant: Sun Patent Trust

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

IPC: H04W48/02 ,  H04W48/12 ,  H04W28/04 ,  H04L5/00 ,  H04L1/16 ,  H04L1/18 ,  H04L1/00 ,  H04B7/0413

Abstract: A terminal and a communication method thereof whereby, even in a case of employing an asymmetric carrier aggregation system and further employing a MIMO transmission method for upstream channels, the error characteristic of control information can be prevented from being degraded. In the terminal, a transport signal forming unit forms transport signals by arranging, based on an arrangement rule, ACK/NACK and CQI in a plurality of layers. According to the arrangement rule, an error detection result is arranged, on a priority basis, in a layer that is different from a layer in which the channel quality information is arranged. In this way, the puncturing of CQI using ACK/NACK can be minimized, with the result that the error characteristic of control information can be prevented from being degraded.

公开(公告)号：US20190261403A1

公开(公告)日：2019-08-22

申请号：US16400271

申请日：2019-05-01

Applicant: Sun Patent Trust

Inventor： Atsushi SUMASU ,  Shozo OKASAKA ,  Shinsuke TAKAOKA ,  Seigo NAKAO ,  Daichi IMAMURA

IPC: H04W72/12 ,  H04W72/04 ,  H04L5/00

Abstract: A base station able to maintain backward compatibility with an LTE mobile station while minimizing the amount of increase in uplink scheduling information reception and demodulation/decoding processing in independent uplink/downlink cell data transmission. A wireless communication system includes a cell #1, a cell #2, and an LTE-A mobile station, and supports independent uplink/downlink cell data transmission. The base station of the cell #2 arranges a PDCCH+, which includes uplink scheduling information from the LTE-A mobile station to the base station of the cell #2, in a downlink data region in the downlink connection of the base station of the cell #1.

公开(公告)号：US20230189043A1

公开(公告)日：2023-06-15

申请号：US18151966

申请日：2023-01-09

Applicant: SUN PATENT TRUST

Inventor： Yasuaki YUDA ,  Seigo NAKAO ,  Ayako HORIUCHI ,  Daichi IMAMURA ,  Masayuki HOSHINO ,  Atsushi SUMASU

IPC: H04W24/10 ,  H04L1/00 ,  H04L1/20 ,  H04L5/00 ,  H04L12/18

CPC classification number: H04W24/10 ,  H04L1/20 ,  H04L1/0026 ,  H04L5/0057 ,  H04L12/189 ,  H04L27/28

Abstract: To measure the channel quality of the own cell accurately in a condition where there is no interference from a neighbor cell. A wireless communication terminal according to the invention is a wireless communication terminal to be connected to a base station for transmitting and receiving data to/from the base station, the wireless communication terminal including: a receiver that receives a signal which includes control information provided for measuring a channel quality of own cell from the base station; an extractor that extracts the control information from the signal received by the receiver; a measurement section that measures, on the basis of the control information, the channel quality of the own cell in a domain where a neighbor cell does not transmit a signal; and a transmitter that transmits a measurement result of the channel quality of the own cell measured by the measurement section, to the base station.

公开(公告)号：US20210204159A1

公开(公告)日：2021-07-01

申请号：US17203447

申请日：2021-03-16

Applicant: Sun Patent Trust

Inventor： Yasuaki YUDA ,  Seigo NAKAO ,  Ayako HORIUCHI ,  Daichi IMAMURA ,  Masayuki HOSHINO ,  Atsushi SUMASU

IPC: H04W24/10 ,  H04L1/00 ,  H04L1/20 ,  H04L5/00 ,  H04L12/18

Abstract: To measure the channel quality of the own cell accurately in a condition where there is no interference from a neighbor cell. A wireless communication terminal according to the invention is a wireless communication terminal to be connected to a base station for transmitting and receiving data to/from the base station, the wireless communication terminal including: a receiver that receives a signal which includes control information provided for measuring a channel quality of own cell from the base station; an extractor that extracts the control information from the signal received by the receiver; a measurement section that measures, on the basis of the control information, the channel quality of the own cell in a domain where a neighbor cell does not transmit a signal; and a transmitter that transmits a measurement result of the channel quality of the own cell measured by the measurement section, to the base station.

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：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.

公开(公告)号：US20190098557A1

公开(公告)日：2019-03-28

申请号：US16206120

申请日：2018-11-30

Applicant: Sun Patent Trust

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

IPC: H04W48/02 ,  H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04W48/12 ,  H04L1/16 ,  H04B7/0413 ,  H04W28/04

CPC classification number: H04W48/02 ,  H04B7/0413 ,  H04L1/0026 ,  H04L1/0031 ,  H04L1/1671 ,  H04L1/1861 ,  H04L1/1893 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0055 ,  H04L5/0057 ,  H04W28/04 ,  H04W48/12

Abstract: A terminal and a communication method thereof whereby, even in a case of employing an asymmetric carrier aggregation system and further employing a MIMO transmission method for upstream channels, the error characteristic of control information can be prevented from being degraded. In the terminal, a transport signal forming unit forms transport signals by arranging, based on an arrangement rule, ACK/NACK and CQI in a plurality of layers. According to the arrangement rule, an error detection result is arranged, on a priority basis, in a layer that is different from a layer in which the channel quality information is arranged. In this way, the puncturing of CQI using ACK/NACK can be minimized, with the result that the error characteristic of control information can be prevented from being degraded.

公开(公告)号：US20170187495A1

公开(公告)日：2017-06-29

申请号：US15461061

申请日：2017-03-16

Applicant: Sun Patent Trust

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

IPC: H04L1/16 ,  H04L5/00 ,  H04L1/00

CPC classification number: H04W48/02 ,  H04B7/0413 ,  H04L1/0026 ,  H04L1/0031 ,  H04L1/1671 ,  H04L1/1861 ,  H04L1/1893 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0055 ,  H04L5/0057 ,  H04W28/04 ,  H04W48/12

Abstract: A terminal and a communication method thereof whereby, even in a case of employing an asymmetric carrier aggregation system and further employing a MIMO transmission method for upstream channels, the error characteristic of control information can be prevented from being degraded. In the terminal, a transport signal forming unit forms transport signals by arranging, based on an arrangement rule, ACK/NACK and CQI in a plurality of layers. According to the arrangement rule, an error detection result is arranged, on a priority basis, in a layer that is different from a layer in which the channel quality information is arranged. In this way, the puncturing of CQI using ACK/NACK can be minimized, with the result that the error characteristic of control information can be prevented from being degraded.