公开(公告)号：US20230336317A1

公开(公告)日：2023-10-19

申请号：US18340725

申请日：2023-06-23

Applicant: Sun Patent Trust

Inventor： Akihiko NISHIO ,  Seigo NAKAO ,  Daichi IMAMURA

IPC: H04L5/00 ,  H04W72/0446 ,  H04W72/23 ,  H04L1/1812

CPC classification number: H04L5/0057 ,  H04W72/0446 ,  H04L5/0028 ,  H04L5/0073 ,  H04W72/23 ,  H04L5/005 ,  H04L5/0051 ,  H04L1/1812 ,  H04B7/0632

Abstract: A wireless communication base station apparatus which is able to prevent deterioration in the throughput of LTE terminals even when LTE terminals and LTE+ terminals coexist. In this apparatus, based on the mapping pattern of the reference signals used only in LTE+ terminals, a setting unit sets, in each subframe, the resource block groups where the reference signals used only by the LTE+ terminals are mapped. For symbols mapped to the antennas, an mapping unit maps, to all the resource blocks within one frame, cell specific reference signals used for both LTE terminals and LTE+ terminals. For the symbols mapped to the antennas, the mapping unit maps, to the plurality of resource blocks, of which part of the resource block groups is comprised, in the same subframe within one frame, the cell specific reference signals used only for LTE+ terminals, based on the setting results inputted from the setting unit.

公开(公告)号：US20230318756A1

公开(公告)日：2023-10-05

申请号：US18330232

申请日：2023-06-06

Applicant: Sun Patent Trust

Inventor： Akihiko NISHIO ,  Seigo NAKAO

IPC: H04L1/1829 ,  H04J11/00 ,  H04L5/00 ,  H04W52/32 ,  H04W72/56 ,  H04B7/0426 ,  H04B7/06

CPC classification number: H04L1/1861 ,  H04J11/003 ,  H04L5/005 ,  H04L5/0051 ,  H04W52/325 ,  H04L5/0048 ,  H04W72/56 ,  H04B7/0426 ,  H04B7/0632 ,  H04L5/0007

Abstract: Disclosed is a wireless communication base station apparatus whereby it is possible to prevent degradation of throughput of LTE terminals, even when LTE terminals and LTE+terminals are present together. In this apparatus, a setting section (105) sets in each subframe a resource block in which is arranged a reference signal that is employed solely by LTE+terminals, based on the pattern of arrangement of reference signals employed solely by LTE+terminals. In the case of symbols that are mapped to antennas (110-1) to (110-4), an arrangement section (106) arranges the characteristic cell reference signals employed by both LTE terminals and LTE+terminals in all of the resource blocks in a single frame. In contrast, in the case of the symbols that are mapped to the antennas (110-5) to (110-8), the arrangement section (106) arranges in some of the resource blocks, that are set in accordance with the setting results input from a setting section (105), the characteristic cell reference signals that are employed solely by the LTE+terminals.

公开(公告)号：US20230074444A1

公开(公告)日：2023-03-09

申请号：US18054852

申请日：2022-11-11

Applicant: Sun Patent Trust

Inventor： Yoshihiko OGAWA ,  Akihiko NISHIO ,  Seigo NAKAO

IPC: H04L5/00 ,  H04L1/16 ,  H04L1/18 ,  H04B7/0413 ,  H04W72/04 ,  H04B7/0452

Abstract: This invention is directed to a terminal apparatus capable of preventing the degradation of reception quality of control information even in a case of employing SU-MIMO transmission system. A terminal, which uses a plurality of different layers to transmit two code words in which control information is placed, comprises: a resource amount determining unit that determines, based on a lower one of the encoding rates of the two code words or based on the average value of the reciprocals of the encoding rates of the two code words, resource amounts of control information in the respective ones of the plurality of layers; and a transport signal forming unit that places, in the two code words, the control information modulated by use of the resource amounts, thereby forming a transport signal.

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

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

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.

公开(公告)号：US20220240230A1

公开(公告)日：2022-07-28

申请号：US17658687

申请日：2022-04-11

Applicant: Sun Patent Trust

Inventor： Yoshiko SAITO ,  Ayako HORIUCHI ,  Seigo NAKAO ,  Akihiko NISHIO ,  Daichi IMAMURA ,  Alexander GOLITSCHEK EDLER VON ELBWART ,  Sujuan FENG

IPC: H04W72/04 ,  H04L5/00 ,  H04J11/00

Abstract: A communication apparatus has a receiver and a decoder. The receiver receives a control signal including first downlink control information and second downlink control information, and receives decoding area information that indicates whether the extended Physical Downlink Control Channel (PDCCH) should be decoded for each of a plurality of terminal apparatuses. The decoder decodes each of a plurality of first mapping candidates in the PDCCH area or decodes each of the plurality of first mapping candidates in the PDCCH area and each of the plurality of second mapping candidates in the extended PDCCH. A number of the second mapping candidates included in the user-specific search space equals to or is more than a number of the first mapping candidates included in the common search space.

公开(公告)号：US20190363838A1

公开(公告)日：2019-11-28

申请号：US16400306

申请日：2019-05-01

Applicant: Sun Patent Trust

Inventor： Akihiko NISHIO ,  Seigo NAKAO

IPC: H04L1/18 ,  H04B7/06 ,  H04B7/0426 ,  H04L5/00 ,  H04W72/10 ,  H04W52/32 ,  H04J11/00

Abstract: A wireless communication base station apparatus prevents degradation of throughput of LTE terminals, even when LTE terminals and LTE+ terminals are present together. A setting section sets in each subframe a resource block in which is arranged a reference signal that is employed solely by LTE+ terminals, based on the pattern of arrangement of reference signals employed solely by LTE+ terminals. As to symbols that are mapped to antennas (110-1) to (110-4), an arrangement section arranges the characteristic cell reference signals employed by both LTE terminals and LTE+ terminals in all of the resource blocks in a single frame. In contrast, as to symbols that are mapped to antennas (110-5) to (110-8), the arrangement section arranges in some of the resource blocks, that are set in accordance with the setting results input from a setting section, the characteristic cell reference signals that are employed solely by the LTE+ terminals.

公开(公告)号：US20190014567A1

公开(公告)日：2019-01-10

申请号：US16132512

申请日：2018-09-17

Applicant: Sun Patent Trust

Inventor： Yoshiko SAITO ,  Ayako HORIUCHI ,  Seigo NAKAO ,  Akihiko NISHIO ,  Daichi IMAMURA ,  Alexander GOLITSCHEK EDLER VON ELBWART ,  Sujuan FENG

IPC: H04W72/04 ,  H04J11/00 ,  H04L5/00

Abstract: A communication apparatus has a receiver and a decoder. The receiver receives a control signal including first downlink control information and second downlink control information, and receives decoding area information that indicates whether the extended Physical Downlink Control Channel (PDCCH) should be decoded for each of a plurality of terminal apparatuses. The decoder decodes each of a plurality of first mapping candidates in the PDCCH area or decodes each of the plurality of first mapping candidates in the PDCCH area and each of the plurality of second mapping candidates in the extended PDCCH. A number of the second mapping candidates included in the user-specific search space equals to or is more than a number of the first mapping candidates included in the common search space.

公开(公告)号：US20180343657A1

公开(公告)日：2018-11-29

申请号：US16053256

申请日：2018-08-02

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

IPC: H04W72/04 ,  H04L27/26

Abstract: Disclosed are a wireless communication base station device and a division number determination method that improve 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.

公开(公告)号：US20180152928A1

公开(公告)日：2018-05-31

申请号：US15871194

申请日：2018-01-15

Applicant: Sun Patent Trust

Inventor： Yoshiko SAITO ,  Ayako HORIUCHI ,  Seigo NAKAO ,  Akihiko NISHIO ,  Daichi IMAMURA ,  Alexander GOLITSCHEK EDLER VON ELBWART ,  Sujuan FENG

IPC: H04W72/04 ,  H04J11/00 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04J11/0079 ,  H04L5/001 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0094

Abstract: A communication apparatus has a receiver and a decoder. The receiver receives a control signal including first downlink control information and second downlink control information, and receives decoding area information that indicates whether the extended Physical Downlink Control Channel (PDCCH) should be decoded for each of a plurality of terminal apparatuses. The decoder decodes each of a plurality of first mapping candidates in the PDCCH area or decodes each of the plurality of first mapping candidates in the PDCCH area and each of the plurality of second mapping candidates in the extended PDCCH. A number of the second mapping candidates included in the user-specific search space equals to or is more than a number of the first mapping candidates included in the common search space.

公开(公告)号：US20170324532A1

公开(公告)日：2017-11-09

申请号：US15661566

申请日：2017-07-27

Applicant: Sun Patent Trust

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

IPC: H04L5/00 ,  H04J13/00 ,  H04J11/00 ,  H04L23/02 ,  H04B7/024 ,  H04L12/801 ,  H04L27/26 ,  H04B7/0452

CPC classification number: H04L5/0048 ,  H04B7/024 ,  H04B7/0452 ,  H04J11/0023 ,  H04J11/0026 ,  H04J11/0053 ,  H04J11/0056 ,  H04J13/0062 ,  H04L5/0032 ,  H04L5/0035 ,  H04L23/02 ,  H04L27/2613 ,  H04L47/34

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.