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公开(公告)号：US20220312420A1
公开(公告)日：2022-09-29
申请号：US17839385
申请日：2022-06-13
Applicant: Sun Patent Trust
Inventor： Yoshihiko OGAWA , Seigo NAKAO , Daichi IMAMURA , Akihiko NISHIO , Masayuki HOSHINO , Katsuhiko HIRAMATSU , Kenichi MIYOSHI , Yasuaki YUDA , Sadaki FUTAGI , Takashi IWAI
Abstract: Disclosed are a wireless communication base station device and a division number determination method that improves the frequency diversity effect while maintaining channel estimation accuracy regardless of the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. A determination unit determines the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. Here, the determination unit increases the number of divisions in the frequency domain of the transmission signal from the wireless communication terminal device as the number of pilot blocks included in the transmission signal increases. In addition, a scheduling unit schedules allocation to the frequency resources of the divided transmission signal according to the number of divisions determined by the determination unit.
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公开(公告)号：US20200305185A1
公开(公告)日：2020-09-24
申请号：US16896968
申请日：2020-06-09
Applicant: Sun Patent Trust
Inventor： Yoshihiko OGAWA , Akihiko NISHIO , Daichi IMAMURA , Seigo NAKAO , Masayuki HOSHINO , Takashi IWAI , Sadaki FUTAGI
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.
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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
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.
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4.发明申请公开(公告)号：US20190223172A1
公开(公告)日：2019-07-18
申请号：US16366424
申请日：2019-03-27
Applicant: Sun Patent Trust
Inventor： Masayuki HOSHINO , Akihiko NISHIO , Seigo NAKAO , Daichi IMAMURA
IPC: H04W72/04 , H04L5/00 , H04B7/06 , H04B7/0456 , H04L1/00 , H04L1/06 , H04L1/20 , H04W72/12 , H04L25/02
CPC classification number: H04W72/044 , H04B7/0486 , H04B7/0626 , H04B7/0632 , H04L1/0026 , H04L1/06 , H04L1/1829 , H04L1/20 , H04L5/0023 , H04L5/0048 , H04L5/0051 , H04L5/0053 , H04L5/006 , H04L5/0073 , H04L5/0082 , H04L5/0094 , H04L25/0224 , H04W72/0406 , H04W72/1215
Abstract: Where first and second reference signals for a first and second communication system, respectively, are transmitted, resources that affect a reception apparatus compatible only with the first communication system can be minimized, and the throughput can be prevented from being deteriorated. As resources for a reference signal CSI-RS for LTE-A, last half symbols in a time direction of a resource unit RB/Sub-frame defined in a frequency-time domain are used, and the CSI-RS is allocated in a position up to the last two symbols or in the last symbol, or the like, of a particular RB/Sub-frame and transmitted when a reference signal 4RS for LTE is transmitted to a reception apparatus in addition to transmitting CSI-RS for LTE-A. The reception apparatus receives CSI-RS allocated in the last half symbol of RB/Sub-frame based on CSI-RS allocation information, measures channel quality by using this CSI-RS, and transmits and reports feedback information.
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5.发明申请公开(公告)号：US20190021077A1
公开(公告)日：2019-01-17
申请号：US16133893
申请日：2018-09-18
Applicant: Sun Patent Trust
Inventor： Masayuki HOSHINO , Akihiko NISHIO , Seigo NAKAO , Daichi IMAMURA
IPC: H04W72/04 , H04W72/12 , H04B7/0456 , H04L25/02 , H04L5/00 , H04B7/06 , H04L1/00 , H04L1/06 , H04L1/20 , H04L1/18
Abstract: Where first and second reference signals for a first and second communication system, respectively, are transmitted, resources that affect a reception apparatus compatible only with the first communication system can be minimized, and the throughput can be prevented from being deteriorated. As resources for a reference signal CSI-RS for LTE-A, last half symbols in a time direction of a resource unit RB/Sub-frame defined in a frequency-time domain are used, and the CSI-RS is allocated in a position up to the last two symbols or in the last symbol, or the like, of a particular RB/Sub-frame and transmitted when a reference signal 4RS for LTE is transmitted to a reception apparatus in addition to transmitting CSI-RS for LTE-A. The reception apparatus receives CSI-RS allocated in the last half symbol of RB/Sub-frame based on CSI-RS allocation information, measures channel quality by using this CSI-RS, and transmits and reports feedback information.
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Patent Agency Ranking
6.发明公开公开(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
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.
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公开(公告)号：US20230096976A1
公开(公告)日：2023-03-30
申请号：US18063002
申请日：2022-12-07
Applicant: Sun Patent Trust
Inventor： Hui TONG , Masayuki HOSHINO , Ming XU , Daichi IMAMURA
Abstract: A Method of scrambling reference signals, device and user equipment using the method are provided. In the method, a plurality of layers of reference signals assigned on predetermined radio resource of a plurality of layers of resource blocks with the same time and frequency resources are scrambled, the method comprising: an orthogonalizing step of multiplying each layer of reference signal selectively by one of a plurality of orthogonal cover codes (OCCs) with the same length wherein the OCC multiplied to a first layer of reference signal can be configured as different from those multiplied to other layers of reference signals; and a scrambling step of multiplying all of symbols obtained from the OCC multiplied to each of the other layers of reference signals by a symbol-common scrambling sequence wherein the symbol-common scrambling sequences can be different from each other for reference signals multiplied by the same OCC.
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公开(公告)号：US20230048151A1
公开(公告)日：2023-02-16
申请号：US17972397
申请日：2022-10-24
Applicant: Sun Patent Trust
Inventor： Lilei WANG , Hidetoshi SUZUKI , Yoshihiko OGAWA , Masayuki HOSHINO
Abstract: Provided are wireless communication methods for D2D communication and UEs therefor. A wireless communication method involves transmitting either a first DCI or a second DCI based on whether a first UE and a second UE are to be in a communication type of groupcast or unicast. In the wireless communication methods, the first DCI and the second DCI are scrambled by the UE ID of the second UE if the first UE and the second UE are in the communication type of unicast upon transmitting the first DCI and the second DCI, and the first DCI and the second DCI are scrambled by the group ID if the first UE and the second UE are in the communication type of groupcast upon transmitting the first DCI and the second DCI.
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公开(公告)号：US20230033689A1
公开(公告)日：2023-02-02
申请号：US17964760
申请日：2022-10-12
Applicant: Sun Patent Trust
Inventor： Lilei WANG , Ming XU , Masayuki HOSHINO , Akihiko NISHIO
Abstract: 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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10.发明申请公开(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
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.
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