公开(公告)号：US11438873B2

公开(公告)日：2022-09-06

申请号：US16887642

申请日：2020-05-29

Applicant: Sun Patent Trust

Inventor： Yasuaki Yuda ,  Seigo Nakao ,  Ayako Horiuchi ,  Akihiko Nishio ,  Daichi Imamura ,  Kenichi Miyoshi

IPC: H04W72/04 ,  H04W72/00 ,  H04W24/10 ,  H04W24/08 ,  H04L5/00 ,  H04W72/08 ,  H04B17/318 ,  H04B17/345 ,  H04W36/00

Abstract: Provided is a radio communication terminal which is capable of measuring quality in communication with a handover destination with high accuracy. The radio communication terminal is capable of communicating with a base station or a relay node, and includes: a receiver which receives control information including information relating to measurement of measuring quality of a neighbor cell; an extractor which extracts information on a subframe where the measurement should be performed, which is a subframe where only transmission of a signal from the relay node connected to the base station is performed, from the information relating to the measurement; a measurement section which performs the measurement, on a subframe basis, based on the extracted information on the subframe where the measurement should be performed; and a transmitter which transmits a result of the measurement to the base station or the relay node.

公开(公告)号：US20210235450A1

公开(公告)日：2021-07-29

申请号：US17232856

申请日：2021-04-16

Applicant: Sun Patent Trust

Inventor： Shinsuke Takaoka ,  Masayuki Hoshino ,  Kenichi Miyoshi

IPC: H04W72/04 ,  H04J1/00 ,  G06F17/14 ,  H04L5/00 ,  H04L27/26 ,  H04J11/00 ,  H04J4/00

Abstract: A communication system includes a communication apparatus and a base station. The communication apparatus includes a Discrete Fourier Transform (DFT) transformer which transforms a time-domain signal into a frequency-domain signal with a DFT size that is a product of powers of a plurality of values; a mapper which maps the frequency-domain signal on a plurality of frequency bands, each frequency band being located at a position separate from position(s) of other(s) of the plurality of frequency bands; and a signal generator which generates a single carrier-frequency division multiple access (SC-FDMA) time-domain signal from the mapped signal. The base station includes a receiver which receives the SC-FDMA time-domain signal; a combiner which generates the frequency-domain signal from the SC-FDMA time-domain signal; and a transformer which transforms the frequency-domain signal into the time-domain signal with an inverse Discrete Fourier Transform (IDFT) having the DFT size.

公开(公告)号：US11013004B2

公开(公告)日：2021-05-18

申请号：US16910466

申请日：2020-06-24

Applicant: Sun Patent Trust

Inventor： Shinsuke Takaoka ,  Masayuki Hoshino ,  Kenichi Miyoshi

IPC: H04W72/04 ,  G06F17/14 ,  H04J1/00 ,  H04J4/00 ,  H04J11/00 ,  H04L5/00 ,  H04L27/26 ,  H04W88/08

Abstract: A communication system includes a communication apparatus and a base station. The communication apparatus includes a Discrete Fourier Transform (DFT) transformer which transforms a time-domain signal into a frequency-domain signal with a DFT size that is a product of powers of a plurality of values; a mapper which maps the frequency-domain signal on a plurality of frequency bands, each frequency band being located at a position separate from position(s) of other(s) of the plurality of frequency bands; and a signal generator which generates a single carrier-frequency division multiple access (SC-FDMA) time-domain signal from the mapped signal. The base station includes a receiver which receives the SC-FDMA time-domain signal; a combiner which generates the frequency-domain signal from the SC-FDMA time-domain signal; and a transformer which transforms the frequency-domain signal into the time-domain signal with an inverse Discrete Fourier Transform (IDFT) having the DFT size.

公开(公告)号：US10667263B2

公开(公告)日：2020-05-26

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 ,  H04L1/00 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H04L25/03

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：US20180070334A1

公开(公告)日：2018-03-08

申请号：US15808745

申请日：2017-11-09

Applicant: Sun Patent Trust

Inventor： Yasuaki Yuda ,  Seigo Nakao ,  Ayako Horiuchi ,  Akihiko Nishio ,  Daichi Imamura ,  Kenichi Miyoshi

IPC: H04W72/00 ,  H04W24/08 ,  H04W72/04 ,  H04W72/08

CPC classification number: H04W72/005 ,  H04B17/318 ,  H04B17/345 ,  H04L5/0073 ,  H04W24/08 ,  H04W24/10 ,  H04W36/0085 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/085

Abstract: Provided is a radio communication terminal which is capable of measuring quality in communication with a handover destination with high accuracy. The radio communication terminal is capable of communicating with a base station or a relay node, and includes: a receiver which receives control information including information relating to measurement of measuring quality of a neighbor cell; an extractor which extracts information on a subframe where the measurement should be performed, which is a subframe where only transmission of a signal from the relay node connected to the base station is performed, from the information relating to the measurement; a measurement section which performs the measurement, on a subframe basis, based on the extracted information on the subframe where the measurement should be performed; and a transmitter which transmits a result of the measurement to the base station or the relay node.

公开(公告)号：US20180027564A1

公开(公告)日：2018-01-25

申请号：US15678948

申请日：2017-08-16

Applicant: Sun Patent Trust

Inventor： Shinsuke Takaoka ,  Masayuki Hoshino ,  Kenichi Miyoshi

IPC: H04W72/04 ,  H04J1/00 ,  H04L5/00 ,  H04J11/00 ,  H04J4/00 ,  H04L27/26 ,  G06F17/14 ,  H04W88/08

CPC classification number: H04W72/0453 ,  G06F17/141 ,  H04J1/00 ,  H04J4/005 ,  H04J11/00 ,  H04L5/0041 ,  H04L27/2602 ,  H04L27/2628 ,  H04L27/2636 ,  H04W88/08 ,  Y10S370/916

Abstract: A communication apparatus includes a receiver, a combiner, and a transformer. The receiver receives signals mapped on plural frequency bands. A size of at least one of the frequency bands is a multiple of a product of two or more powers of prime numbers, which are integer numbers greater than 1 and are different from each other. An exponent for at least one of the prime numbers is an integer greater than 1. The combiner combines the received signals into a combined signal. The transformer transforms the combined signal in a frequency domain into a symbol sequence in a time domain with an inverse discrete Fourier transform (IDFT) having a size that is a product of powers of plural values. The values are integer numbers greater than 1 and are different from each other. An exponent for at least one of the values is an integer greater than 1.

公开(公告)号：US20240179037A1

公开(公告)日：2024-05-30

申请号：US18433076

申请日：2024-02-05

Applicant: Sun Patent Trust

Inventor： Shinsuke Takaoka ,  Masayuki Hoshino ,  Kenichi Miyoshi

IPC: H04L27/26 ,  G06F17/14 ,  H04J1/00 ,  H04J4/00 ,  H04J11/00 ,  H04L5/00 ,  H04W72/0453 ,  H04W88/08

CPC classification number: H04L27/2602 ,  G06F17/141 ,  H04J1/00 ,  H04J4/005 ,  H04J11/00 ,  H04L5/0041 ,  H04L27/26 ,  H04L27/2636 ,  H04W72/0453 ,  H04W88/08 ,  Y10S370/916

Abstract: A communication system includes a communication apparatus and a base station. The communication apparatus includes a Discrete Fourier Transform (DFT) transformer which transforms a time-domain signal into a frequency-domain signal with a DFT size that is a product of powers of a plurality of values; a mapper which maps the frequency-domain signal on a plurality of frequency bands, each frequency band being located at a position separate from position(s) of other(s) of the plurality of frequency bands; and a signal generator which generates a single carrier-frequency division multiple access (SC-FDMA) time-domain signal from the mapped signal. The base station includes a receiver which receives the SC-FDMA time-domain signal; a combiner which generates the frequency-domain signal from the SC-FDMA time-domain signal; and a transformer which transforms the frequency-domain signal into the time-domain signal with an inverse Discrete Fourier Transform (IDFT) having the DFT size.

公开(公告)号：US11929858B2

公开(公告)日：2024-03-12

申请号：US18149620

申请日：2023-01-03

Applicant: Sun Patent Trust

Inventor： Shinsuke Takaoka ,  Masayuki Hoshino ,  Kenichi Miyoshi

IPC: H04L27/26 ,  G06F17/14 ,  H04J1/00 ,  H04J4/00 ,  H04J11/00 ,  H04L5/00 ,  H04W72/0453 ,  H04W88/08

CPC classification number: H04L27/2602 ,  G06F17/141 ,  H04J1/00 ,  H04J4/005 ,  H04J11/00 ,  H04L5/0041 ,  H04L27/26 ,  H04L27/2636 ,  H04W72/0453 ,  H04W88/08 ,  Y10S370/916

Abstract: A communication system includes a communication apparatus and a base station. The communication apparatus includes a Discrete Fourier Transform (DFT) transformer which transforms a time-domain signal into a frequency-domain signal with a DFT size that is a product of powers of a plurality of values; a mapper which maps the frequency-domain signal on a plurality of frequency bands, each frequency band being located at a position separate from position(s) of other(s) of the plurality of frequency bands; and a signal generator which generates a single carrier-frequency division multiple access (SC-FDMA) time-domain signal from the mapped signal. The base station includes a receiver which receives the SC-FDMA time-domain signal; a combiner which generates the frequency-domain signal from the SC-FDMA time-domain signal; and a transformer which transforms the frequency-domain signal into the time-domain signal with an inverse Discrete Fourier Transform (IDFT) having the DFT size.

公开(公告)号：US11818735B2

公开(公告)日：2023-11-14

申请号：US17856548

申请日：2022-07-01

Applicant: Sun Patent Trust

Inventor： Yasuaki Yuda ,  Seigo Nakao ,  Ayako Horiuchi ,  Akihiko Nishio ,  Daichi Imamura ,  Kenichi Miyoshi

IPC: H04W72/30 ,  H04W24/10 ,  H04W72/21 ,  H04W72/23 ,  H04W72/542 ,  H04W24/08 ,  H04L5/00 ,  H04B17/318 ,  H04B17/345 ,  H04W72/0446 ,  H04W36/00

CPC classification number: H04W72/30 ,  H04B17/318 ,  H04B17/345 ,  H04L5/0073 ,  H04W24/08 ,  H04W24/10 ,  H04W72/0446 ,  H04W72/21 ,  H04W72/23 ,  H04W72/542 ,  H04W36/0085

Abstract: Provided is a radio communication terminal which is capable of measuring quality in communication with a handover destination with high accuracy. The radio communication terminal is capable of communicating with a base station or a relay node, and includes: a receiver which receives control information including information relating to measurement of measuring quality of a neighbor cell; an extractor which extracts information on a subframe where the measurement should be performed, which is a subframe where only transmission of a signal from the relay node connected to the base station is performed, from the information relating to the measurement; a measurement section which performs the measurement, on a subframe basis, based on the extracted information on the subframe where the measurement should be performed; and a transmitter which transmits a result of the measurement to the base station or the relay node.

公开(公告)号：US20200296689A1

公开(公告)日：2020-09-17

申请号：US16887642

申请日：2020-05-29

Applicant: Sun Patent Trust

Inventor： Yasuaki Yuda ,  Seigo Nakao ,  Ayako Horiuchi ,  Akihiko Nishio ,  Daichi Imamura ,  Kenichi Miyoshi

IPC: H04W72/00 ,  H04W24/10 ,  H04W24/08 ,  H04L5/00 ,  H04W72/04 ,  H04W72/08 ,  H04B17/318 ,  H04B17/345

Abstract: Provided is a radio communication terminal which is capable of measuring quality in communication with a handover destination with high accuracy. The radio communication terminal is capable of communicating with a base station or a relay node, and includes: a receiver which receives control information including information relating to measurement of measuring quality of a neighbor cell; an extractor which extracts information on a subframe where the measurement should be performed, which is a subframe where only transmission of a signal from the relay node connected to the base station is performed, from the information relating to the measurement; a measurement section which performs the measurement, on a subframe basis, based on the extracted information on the subframe where the measurement should be performed; and a transmitter which transmits a result of the measurement to the base station or the relay node.