公开(公告)号：US11683131B2

公开(公告)日：2023-06-20

申请号：US17401997

申请日：2021-08-13

申请人： Sun Patent Trust

发明人： Kazuki Takeda ,  Toru Oizumi ,  Ayako Horiuchi ,  Akihiko Nishio

IPC分类号： H04L1/1829 ,  H04L1/00 ,  H04L5/00 ,  H04W72/23

CPC分类号： H04L1/1854 ,  H04L1/0038 ,  H04L1/1864 ,  H04L5/0055 ,  H04W72/23

摘要： The purpose of the present invention is to avoid ACK/NACK collision in a system in which E-PDCCH control information is transmitted, increase the utilization efficiency of ACK/NACK resources, and suppress unnecessary PUSCH band reduction. A wireless communications terminal having a configuration comprising: a reception unit that receives control signals including ACK/NACK indexes, via an expanded physical downlink control channel; a control unit that determines, on the basis of the ACK/NACK indexes, whether to use a dynamically allocated dynamic ACK/NACK resource or a specified resource specified beforehand, to send downlink data ACK/NACK signals; and a transmission unit that sends the ACK/NACK signals using the dynamic ACK/NACK resource or the specified resource, as determined.

公开(公告)号：US11671947B2

公开(公告)日：2023-06-06

申请号：US17210269

申请日：2021-03-23

申请人： Sun Patent Trust

发明人： Zhi Zhang ,  Ming Xu ,  Masayuki Hoshino ,  Daichi Imamura ,  Akihiko Nishio

IPC分类号： H04W72/04 ,  H04L25/02 ,  H04L27/26 ,  H04L5/00 ,  H04W72/12 ,  H04W72/044 ,  H04W72/121

CPC分类号： H04W72/044 ,  H04L5/0016 ,  H04L5/0051 ,  H04L25/0226 ,  H04L27/2613 ,  H04W72/121

摘要： Method of scrambling signals, transmission point device, and user equipment using the method are provided. The method includes: sending an ID table to a user equipment through higher layer signaling, the ID table being a subset of the whole ID space and containing available IDs for the user equipment; notifying the user equipment an ID in the ID table to be used through physical layer signaling or UE specific higher layer signaling; generating a random seed based on the notified ID; initializing a scrambling sequence by the random seed; and scrambling the signals with the initialized scrambling sequence. The method of the disclosure, by combining physical layer signaling and higher layer signaling, may notify the used group ID and the blind detection space to a UE, wherein the blind detection for the UE is enabled and the signaling overhead is reduced.

公开(公告)号：US11616535B2

公开(公告)日：2023-03-28

申请号：US16690688

申请日：2019-11-21

申请人： Sun Patent Trust

发明人： Takashi Iwai ,  Akihiko Nishio ,  Yoshihiko Ogawa ,  Seigo Nakao ,  Masayuki Hoshino

IPC分类号： H04L5/00 ,  H04L27/26 ,  H04B7/024 ,  H04J11/00 ,  H04J13/00 ,  H04L23/02 ,  H04L47/34 ,  H04B7/0452

摘要： 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：US11582082B2

公开(公告)日：2023-02-14

申请号：US17481115

申请日：2021-09-21

申请人： Sun Patent Trust

发明人： Yoshihiko Ogawa ,  Akihiko Nishio ,  Masayuki Hoshino ,  Takashi Iwai

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

摘要： 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：US11569965B2

公开(公告)日：2023-01-31

申请号：US17222383

申请日：2021-04-05

申请人： Sun Patent Trust

发明人： Masayuki Hoshino ,  Akihiko Nishio ,  Daichi Imamura

IPC分类号： H04W4/00 ,  H04L5/00 ,  H04J13/00 ,  H04J13/18 ,  H04L1/18 ,  H04L25/03 ,  H04L1/00 ,  H04B7/0456 ,  H04W72/04

摘要： The present disclosure provides a terminal device that allows constraints on user allocation to be prevented and spread codes to be allocated in a scheduler when non-adaptive HARQ is employed using a PHICH. A codeword generator generates code words by encoding data, a layer mapping unit places each CW in one or a plurality of layers, a DMRS generator generates a reference signal for each layer in which a CW is placed by using any resource among a plurality of resources defined by a mutually orthogonal plurality of OCCs, and an ACK/NACK demodulator receives a response signal indicating a retransmission request. When a response signal requesting retransmission of only a CW placed in a plurality of layers is received, the DMRS generator uses each resource having the same OCC among the plurality of resources for the reference signals generated in the corresponding layers.

公开(公告)号：US20220394690A1

公开(公告)日：2022-12-08

申请号：US17889253

申请日：2022-08-16

申请人： Sun Patent Trust

发明人： Seigo Nakao ,  Akihiko Nishio ,  Daichi Imamura

IPC分类号： H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04W4/06

摘要： Disclosed is a base station in which the frequency usage efficiency can be improved when the communication bandwidths are asymmetric in the uplink line and the downlink line. A base station can communicate by using a plurality of downlink unit bands and a smaller number of uplink unit bands. A control unit allocates uplink resource allocation information and downlink resource allocation information to a PDCCH which is arranged in each of the plurality of downlink unit bands, and allocates a response signal to the uplink line data to a PHICH which is arranged in the same number of downlink unit bands from the plurality of downlink unit bands as there are uplink unit bands. A transmit RF unit transmits the resource allocation information or the response signal.

公开(公告)号：US20220360352A1

公开(公告)日：2022-11-10

申请号：US17870537

申请日：2022-07-21

申请人： Sun Patent Trust

发明人： Yoshihiko Ogawa ,  Akihiko Nishio ,  Takashi Iwai ,  Seigo Nakao ,  Daichi Imamura ,  Atsushi Sumasu

IPC分类号： H04J11/00 ,  H04B7/0452 ,  H04J13/00 ,  H04J13/18 ,  H04B7/06 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12

摘要： 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：US11470602B2

公开(公告)日：2022-10-11

申请号：US17168105

申请日：2021-02-04

申请人： Sun Patent Trust

发明人： Seigo Nakao ,  Akihiko Nishio ,  Daichi Imamura

IPC分类号： H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04W4/06

摘要： Disclosed is a base station in which the frequency usage efficiency can be improved when the communication bandwidths are asymmetric in the uplink line and the downlink line. A base station can communicate by using a plurality of downlink unit bands and a smaller number of uplink unit bands. A control unit allocates uplink resource allocation information and downlink resource allocation information to a PDCCH which is arranged in each of the plurality of downlink unit bands, and allocates a response signal to the uplink line data to a PHICH which is arranged in the same number of downlink unit bands from the plurality of downlink unit bands as there are uplink unit bands. A transmit RF unit transmits the resource allocation information or the response signal.

公开(公告)号：US20220264485A1

公开(公告)日：2022-08-18

申请号：US17737803

申请日：2022-05-05

申请人： Sun Patent Trust

发明人： Shinsuke Takaoka ,  Hidetoshi Suzuki ,  Akihiko Nishio ,  Takashi Iwai

IPC分类号： H04W52/36 ,  H04W52/34 ,  H04W52/42 ,  H04W52/30 ,  H04L5/00 ,  H04W28/02

摘要： Provided are a wireless communication terminal device and a power allocation method, wherein transmission channel quality information, regarding a Pcell having a high probability that UCI is multiplied therein, can be accurately estimated by an SRS having high priority in power allocation, and an eNB can instruct appropriate transmission power to an UL channel which transmits the subsequent UCI. A power scaling detection unit detects whether or not a total transmission power value of the UL channels transmitted by the plurality of CC exceeds the maximum transmission power specific to the UE. When a plurality of SRS are simultaneously transmitted using a Pcell and a Scell, and power scaling occurs, a power scaling control unit performs power allocation so that transmission power of the SRS of the Pcell has the higher priority than that of the SRS of the Scell.

公开(公告)号：US11381353B2

公开(公告)日：2022-07-05

申请号：US16931020

申请日：2020-07-16

申请人： Sun Patent Trust

发明人： Toru Oizumi ,  Ayako Horiuchi ,  Akihiko Nishio

IPC分类号： H04L1/18 ,  H04W72/02 ,  H04W76/27 ,  H04L5/00 ,  H04W72/04

摘要： Provided is a terminal device with which deterioration in hybrid automatic repeat request (HARQ) retransmission performance can be inhibited by continuing a downlink (DL) HARQ process for DL data before and after changing the uplink link-DL configuration. In this device, a decoder stores, in a retransmission buffer, DL data transmitted from a base station, and decodes the DL data, and a wireless transmitter transmits a response signal generated using a DL-data-error detection result. A soft buffer is partitioned into a plurality of regions for each retransmission process on the basis of the highest values among retransmission process numbers respectively stated in a plurality of configuration patterns which can be set in the terminal.