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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.
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2.发明授权公开(公告)号：US11582630B2
公开(公告)日：2023-02-14
申请号：US17203447
申请日：2021-03-16
申请人： Sun Patent Trust
发明人： Yasuaki Yuda , Seigo Nakao , Ayako Horiuchi , Daichi Imamura , Masayuki Hoshino , Atsushi Sumasu
IPC分类号： H04W24/10 , H04L1/00 , H04L1/20 , H04L5/00 , H04L12/18 , H04L27/28 , H04W24/02 , H04B7/26 , H04W84/04
摘要： 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.
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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
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.
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4.发明授权公开(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.
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公开(公告)号：US20220039091A1
公开(公告)日：2022-02-03
申请号：US17499682
申请日：2021-10-12
申请人： Sun Patent Trust
发明人： Lilei Wang , Hidetoshi Suzuki , Masayuki Hoshino
IPC分类号： H04W72/04
摘要： Provided are D2D communication methods and D2D-enabled wireless devices. The D2D communication method performed by a D2D-enabled wireless device includes transmitting signals in D2D subframes with a randomization pattern. The randomization pattern is designed based on relative subframe positions in a virtual pure D2D subframe sequence composed of multiple D2D subframes in one or more radio frames. In another embodiment, the eNB scheduling based resource allocation and the D2D-enabled wireless device selection on its own based resource allocation share a same randomization pattern design.
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公开(公告)号：US20220007367A1
公开(公告)日：2022-01-06
申请号：US17481115
申请日：2021-09-21
申请人： Sun Patent Trust
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.
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公开(公告)号：US11160076B2
公开(公告)日：2021-10-26
申请号：US16269205
申请日：2019-02-06
申请人： Sun Patent Trust
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.
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公开(公告)号：US20210153181A1
公开(公告)日：2021-05-20
申请号：US17161101
申请日：2021-01-28
申请人： Sun Patent Trust
发明人： Lilei Wang , Ming Xu , Masayuki Hoshino , Akihiko Nishio
摘要： The present disclosure provides a communication method, base station and user equipment for configuring a parameter table in a wireless communication system including a base station and a user equipment, the communication method comprising: defining at both the base station and the user equipment a parameter table which includes whole entries of a legacy parameter table and extended entries; and transmitting from the base station to the user equipment a bitmap indication which indicates a sub-table selected from the parameter table, wherein the number of the entries in the sub-table is the same as in the legacy parameter table.
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9.发明授权公开(公告)号：US11012212B2
公开(公告)日：2021-05-18
申请号：US16716257
申请日：2019-12-16
申请人： Sun Patent Trust
发明人： Hui Tong , Ming Xu , Masayuki Hoshino , Daichi Imamura
摘要： A method and a system of setting up a reference signal in a radio communication system are disclosed. The radio communication system includes a serving cell and a neighboring cell, and a mobile terminal of the serving cell uses the same temporal frequency resource to receive a serving resource block from the serving cell and an interference resource block from the neighboring cell. The method includes setting up a user-specific reference signal in the interference resource block and puncturing at the same temporal frequency position as the temporal frequency position at which the user-specific reference signal is set up on the interference resource block of the serving resource block to prevent any signal from being transmitted at the punctured temporal frequency position. When the method and the system are used and the interference power between cells is measured, it is possible to effectively reduce feedback overhead in a coordinated beamforming.
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公开(公告)号：US20210136745A1
公开(公告)日：2021-05-06
申请号：US17145195
申请日：2021-01-08
申请人： SUN PATENT TRUST
发明人： Chi Gao , Hidetoshi Suzuki , Li Wang , Masayuki Hoshino
摘要： The present disclosure provides a wireless communication method and an eNode B and user equipment therefor. The method comprises a step of transmitting multiple PDCCH or EPDCCH repetitions respectively in multiple successive downlink subframes with a transmission repetition number and a transmission starting subframe. The transmission starting subframe is selected from a first starting subframe set corresponding to the first repetition number or a second starting subframe set corresponding to the second repetition number. The subframe indexes of any two adjacent starting subframes in the first starting subframe set are offset by a same first index interval, the subframe indexes of any two adjacent starting subframes in the second starting subframe set are offset by a same second index interval, and the second index interval is an integral multiple of the first index interval.
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