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：US20230403188A1

公开(公告)日：2023-12-14

申请号：US18450316

申请日：2023-08-15

Applicant: Sun Patent Trust

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

IPC: H04L27/26 ,  H04L5/00 ,  H04J13/00 ,  H04B7/06 ,  H04W72/20 ,  H04W72/04 ,  H04L69/324 ,  H04W24/10 ,  H04W72/0453

CPC classification number: H04L27/2613 ,  H04L5/0023 ,  H04J13/004 ,  H04L5/0016 ,  H04L5/0037 ,  H04L5/0051 ,  H04L5/0058 ,  H04L5/0094 ,  H04B7/0684 ,  H04W72/20 ,  H04L5/005 ,  H04L5/0053 ,  H04W72/04 ,  H04B7/0632 ,  H04L69/324 ,  H04W24/10 ,  H04B7/0615 ,  H04L5/0048 ,  H04W72/0453

Abstract: Provided is a transmitter which improves the flexibility of SRS resource allocation without increasing the amount of signaling for notifying the cyclic shift amount. In the transmitter, with regard to each basic shift amount candidate group having a basic shift amount from 0 to N−1, a transmission control unit (206) specifies the actual shift amount imparted to a cyclic shift sequence used in scrambling a reference signal transmitted from each antenna port, said specification being performed based on a table in which cyclic shift amount candidates correspond to each antenna port, and based on setting information transmitted from a base station (100). With regard to basic shift amount candidates for shift amount X, the table differentiates between an offset pattern comprising offset values for cyclic shift amount candidates corresponding to each antenna port and an offset pattern corresponding to basic shift amount candidates of X+N/2.

公开(公告)号：US20230164012A1

公开(公告)日：2023-05-25

申请号：US18152688

申请日：2023-01-10

Applicant: Sun Patent Trust

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

IPC: H04L27/26 ,  H04L5/00 ,  H04J13/00 ,  H04B7/06 ,  H04W72/20 ,  H04W72/04 ,  H04L69/324 ,  H04W24/10 ,  H04W72/0453

CPC classification number: H04L27/2613 ,  H04B7/0615 ,  H04B7/0632 ,  H04B7/0684 ,  H04J13/004 ,  H04L5/005 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0058 ,  H04L5/0094 ,  H04L69/324 ,  H04W24/10 ,  H04W72/04 ,  H04W72/20 ,  H04W72/0453

Abstract: Provided is a transmitter which improves the flexibility of SRS resource allocation without increasing the amount of signaling for notifying the cyclic shift amount. In the transmitter, with regard to each basic shift amount candidate group having a basic shift amount from 0 to N-1, a transmission control unit (206) specifies the actual shift amount imparted to a cyclic shift sequence used in scrambling a reference signal transmitted from each antenna port, said specification being performed based on a table in which cyclic shift amount candidates correspond to each antenna port, and based on setting information transmitted from a base station (100). With regard to basic shift amount candidates for shift amount X, the table differentiates between an offset pattern comprising offset values for cyclic shift amount candidates corresponding to each antenna port and an offset pattern corresponding to basic shift amount candidates of X+N/2.

公开(公告)号：US20220240298A1

公开(公告)日：2022-07-28

申请号：US17718154

申请日：2022-04-11

Applicant: Sun Patent Trust

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

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

Abstract: Communication apparatuses and methods reduce the amount of signaling while maintaining a high scheduling gain. A determination unit 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 that is output by an estimation unit, and the maximum value for the number of clusters that is output by the determination 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：US20200092060A1

公开(公告)日：2020-03-19

申请号：US16690688

申请日：2019-11-21

Applicant: Sun Patent Trust

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

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

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：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：US20180115987A1

公开(公告)日：2018-04-26

申请号：US15850479

申请日：2017-12-21

Applicant: Sun Patent Trust

Inventor： Yoshihiko OGAWA ,  Daichi IMAMURA ,  Ayako HORIUCHI ,  Sadaki FUTAGI

IPC: H04W72/12 ,  H04L5/00 ,  H04L5/02 ,  H04W88/08

CPC classification number: H04W72/1289 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/006 ,  H04L5/0085 ,  H04L5/023 ,  H04W88/085

Abstract: A radio communication base station device can efficiently obtain a multiuser diversity gain from frequency scheduling while reducing the amount of a reference signal occupying an uplink. In the device, a grouping section divides a plurality of RBs (Resource Blocks) into a plurality of RB groups. An RB group control unit performs a control to change the correspondence relationship between the RBs and the RB groups with time. When the grouping section divides the RBs into the RB groups, the RB control unit performs a control to change a combination of the RBs included in each of the RB groups with time. A scheduling section performs a scheduling of allocating each of a plurality of mobile stations to each of the RBs in each of the RB groups according to the reception quality of the reference signal.

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.

公开(公告)号：US20250030496A1

公开(公告)日：2025-01-23

申请号：US18908511

申请日：2024-10-07

Applicant: Sun Patent Trust

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

IPC: H04J11/00 ,  H04B7/0452 ,  H04B7/06 ,  H04J13/00 ,  H04J13/18 ,  H04L5/00 ,  H04W72/23 ,  H04W72/54 ,  H04W88/02 ,  H04W88/08

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：US20240314701A1

公开(公告)日：2024-09-19

申请号：US18671468

申请日：2024-05-22

Applicant: Sun Patent Trust

Inventor： Takashi IWAI ,  Daichi IMAMURA ,  Akihiko NISHIO ,  Yoshihiko OGAWA ,  Shinsuke TAKAOKA

IPC: H04W52/24 ,  H04L5/00 ,  H04W52/14 ,  H04W52/16 ,  H04W52/32 ,  H04W72/044

CPC classification number: H04W52/241 ,  H04L5/0048 ,  H04L5/0051 ,  H04W52/146 ,  H04W52/16 ,  H04W52/325 ,  H04W72/0473

Abstract: Disclosed is a wireless communication device that can suppress an increase in power consumption of a terminal while preventing the degradation of SINR measurement precision resulting from TPC errors in a base station. A terminal controls the transmission power of a second signal by adding an offset to the transmission power of a first signal; an offset-setting unit sets an offset correction value in response to a transmission time gap between a third signal transmitted the previous time and the second signal transmitted this time; and a transmission power control unit controls the transmission power of the second signal using the correction value.