公开(公告)号：US12219462B2

公开(公告)日：2025-02-04

申请号：US18322424

申请日：2023-05-23

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：US12218753B2

公开(公告)日：2025-02-04

申请号：US18504934

申请日：2023-11-08

Applicant: Sun Patent Trust

Inventor： Akihiko Nishio ,  Seigo Nakao

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26 ,  H04W72/0453 ,  H04W72/20 ,  H04W72/23 ,  H04L1/1829

Abstract: Disclosed are a transmission device and a transmission method with which it is possible to prevent delays in data transmission and to minimize the increase in the number of bits necessary for the notification of a CC to be used, in cases where a CC to be used is added during communication employing carrier aggregation. When a component carrier is to be added to a component carrier set, a setting section provided in a base station: modifies a CIF table that defines the correspondence between code points, which are used as labels for the respective component carriers contained in the component carrier set, and the identification information of the respective component carriers; and assigns a vacant code point to the component carrier to be added, while keeping the correspondence between the code points and the component carrier identification information defined in the CIF table before modification.

公开(公告)号：US12096469B2

公开(公告)日：2024-09-17

申请号：US18341367

申请日：2023-06-26

Applicant: Sun Patent Trust

Inventor： Seigo Nakao

IPC: H04W74/00 ,  H04L5/00 ,  H04W72/23 ,  H04L1/1607 ,  H04L1/1829 ,  H04W72/0453 ,  H04W84/04

CPC classification number: H04W74/006 ,  H04L5/001 ,  H04L5/0032 ,  H04L5/0053 ,  H04L5/0094 ,  H04W72/23 ,  H04L1/1635 ,  H04L1/1835 ,  H04L5/0044 ,  H04L5/0055 ,  H04L5/0064 ,  H04W72/0453 ,  H04W84/042

Abstract: Provided are a terminal, a base station and a signal transmission control method whereby a response signal can be efficiently transmitted when the terminal receives downstream allocation control information via an R-PDCCH. An extraction unit receives downstream control information via one of a first downstream control channel, which is transmitted by use of one or more control channel elements (CCE) associated with an upstream control channel resource, and a second downstream control channel different from the first downstream control channel, and also receives data via a data channel. A control unit selects, from resources associated with CCE and from particular resources reported by a base station, an upstream control channel resource to be used in transmission of the response signal, and controls the transmission of the response signal.

公开(公告)号：US11889340B2

公开(公告)日：2024-01-30

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 ,  H04L27/28 ,  H04W24/02 ,  H04B7/26 ,  H04W84/04

CPC classification number: H04W24/10 ,  H04L1/0026 ,  H04L1/20 ,  H04L5/0057 ,  H04L12/189 ,  H04B7/2606 ,  H04L27/28 ,  H04W24/02 ,  H04W84/047

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：US11848775B2

公开(公告)日：2023-12-19

申请号：US18150710

申请日：2023-01-05

Applicant: Sun Patent Trust

Inventor： Akihiko Nishio ,  Seigo Nakao

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26 ,  H04W72/20 ,  H04W72/23 ,  H04W72/0453 ,  H04L1/1829

CPC classification number: H04L1/0047 ,  H04L5/001 ,  H04L5/0053 ,  H04L5/0096 ,  H04L27/2634 ,  H04W72/0453 ,  H04W72/20 ,  H04W72/23 ,  H04L1/1829

Abstract: Disclosed are a transmission device and a transmission method with which it is possible to prevent delays in data transmission and to minimize the increase in the number of bits necessary for the notification of a CC to be used, in cases where a CC to be used is added during communication employing carrier aggregation. When a component carrier is to be added to a component carrier set, a setting section provided in a base station: modifies a CIF table that defines the correspondence between code points, which are used as labels for the respective component carriers contained in the component carrier set, and the identification information of the respective component carriers; and assigns a vacant code point to the component carrier to be added, while keeping the correspondence between the code points and the component carrier identification information defined in the CIF table before modification.

公开(公告)号：US20230362909A1

公开(公告)日：2023-11-09

申请号：US18354438

申请日：2023-07-18

Applicant: Sun Patent Trust

Inventor： Takashi Iwai ,  Sadaki Futagi ,  Daichi Imamura ,  Akihiko Nishio ,  Seigo Nakao ,  Yoshihiko Ogawa

IPC: H04L5/00 ,  H04W72/0453 ,  H04W72/20 ,  H04W72/21 ,  H04W72/23 ,  H04W72/54

CPC classification number: H04W72/0453 ,  H04L5/0037 ,  H04L5/0041 ,  H04L5/0064 ,  H04W72/20 ,  H04W72/21 ,  H04W72/23 ,  H04W72/54 ,  H04L5/006 ,  H04L5/0091

Abstract: A scheduling apparatus and a scheduling method, wherein the amount of signaling for frequency resource allocation information can be reduced while maintaining system throughput performance. In a base station apparatus, a scheduling section allocates frequency resources to frequency allocation target terminals based on set frequency allocation units, and a frequency allocation parameter setting section adjusts the set frequency allocation units set in the scheduling section based on cluster numbers. Due to this, in each cluster number, frequency resources can be allocated based on the most suitable frequency allocation units with respect to the signaling bit number. As a result, the amount of signaling for frequency resource allocation information can be reduced. Further, system throughput can be maintained by making the cluster number, which is a parameter having little effect on system throughput, a setting parameter for frequency allocation units.

公开(公告)号：US11778635B2

公开(公告)日：2023-10-03

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 ,  H04W72/23 ,  H04W72/1268 ,  H04L27/26 ,  H04L1/00 ,  H04W72/044 ,  H04L5/00 ,  H04W72/0453 ,  H04W28/06 ,  H04W84/04

CPC classification number: H04W72/23 ,  H04L1/00 ,  H04L1/0004 ,  H04L5/0023 ,  H04L5/0041 ,  H04L5/0064 ,  H04L5/0092 ,  H04L27/2601 ,  H04L27/2607 ,  H04L27/2614 ,  H04W72/0453 ,  H04W72/0466 ,  H04W72/0473 ,  H04W72/1268 ,  H04L1/0041 ,  H04L1/0045 ,  H04L5/006 ,  H04L5/0028 ,  H04L27/2636 ,  H04L27/2647 ,  H04W28/06 ,  H04W72/12 ,  H04W84/042

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：US11765760B2

公开(公告)日：2023-09-19

申请号：US16862353

申请日：2020-04-29

Applicant: Sun Patent Trust

Inventor： Akihiko Nishio ,  Seigo Nakao

IPC: H04W72/542 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04W72/542 ,  H04L5/001 ,  H04L5/0055 ,  H04L27/2634 ,  H04L27/26524 ,  H04L5/0016

Abstract: A terminal capable of reducing the resource regions in an uplink component band without increasing signaling even if a plurality of acknowledgment signals to downlink data transmitted respectively in a plurality of downlink component bands are transmitted from one uplink component band. A terminal (200) for making communication using the plurality of downlink component bands, wherein a PCFICH reception section (208) obtains CFI information indicating the number of symbols used for a control channel to which resource allocation information relating to downlink data addressed to a device is allocated for each of the downlink component bands, a mapping section (214); sets a resource region to which an acknowledgment signal to the downlink data is allocated for each of the plurality of downlink component bands according to the CFI information of each of the downlink component bands in an uplink component band set to the device, and maps the acknowledgment signals into the resource regions corresponding to the downlink component bands used for the allocation of the downlink data.

公开(公告)号：US11696268B2

公开(公告)日：2023-07-04

申请号：US16856368

申请日：2020-04-23

Applicant: Sun Patent Trust

Inventor： Akihiko Nishio ,  Seigo Nakao

IPC: H04W72/04 ,  H04W72/0453 ,  H04L5/00 ,  H04W72/23 ,  H04L1/00

CPC classification number: H04W72/0453 ,  H04L1/0038 ,  H04L5/003 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0055 ,  H04W72/23 ,  H04L1/0025

Abstract: A wireless communication base station device which makes it possible to provide a base station, terminal and CCE allocation method capable of reducing the number of times blind decoding of a terminal is performed, without increasing the CCE block rate, even when a plurality of unit bands are set in a terminal. In this device, a search space setting section (103) sets in each of a plurality of unit bands a common search space in respect of a terminal which is communicating using the plurality of unit bands and other terminals, and sets in each of the plurality of unit bands an individual search space in respect of the terminal. An allocation section (106) allocates control information solely to CCEs within the common search spaces set in specified unit bands among the plurality of unit bands, or solely to CCEs within individual search spaces set in specified unit bands.

公开(公告)号：US11616535B2

公开(公告)日：2023-03-28

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 ,  H04L27/26 ,  H04B7/024 ,  H04J11/00 ,  H04J13/00 ,  H04L23/02 ,  H04L47/34 ,  H04B7/0452

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.