公开(公告)号：US20210014030A1

公开(公告)日：2021-01-14

申请号：US17035125

申请日：2020-09-28

Applicant: Panasonic Corporation

Inventor： Atsushi Matsumoto ,  Daichi Imamura ,  Takashi Iwai ,  Yoshihiko Ogawa ,  Tomofumi Takata ,  Katsuhiko Hiramatsu

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/08 ,  H04W72/04 ,  H04W72/12

Abstract: Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit (201) which generates an SRS (Sounding Reference Signal) for measuring uplink line data channel quality; an SRS arrangement unit (202) which frequency-multiplexes the SRS on the SR transmission band and arranges it; and an SRS arrangement control unit (208) which controls SRS frequency multiplex so as to be uniform in frequency without modifying the bandwidth of one SRS multiplex unit in accordance with the fluctuation of the reference signal transmission bandwidth according to the SRS arrangement information transmitted from the base station and furthermore controls the transmission interval of the frequency-multiplexed SRS.

公开(公告)号：US10742344B2

公开(公告)日：2020-08-11

申请号：US15356236

申请日：2016-11-18

Applicant: Panasonic Corporation

Inventor： Yoshihiko Ogawa ,  Daichi Imamura ,  Sadaki Futagi ,  Tomofumi Takata

IPC: H04J11/00 ,  H04L12/26 ,  H04L5/00 ,  H04J13/00 ,  H04J13/22 ,  H04W16/10 ,  H04B1/38 ,  H04L27/26 ,  H04W72/04

Abstract: Provided is a sequence allocation method capable of reducing inter-cell interference of a reference signal when a ZC sequence is used as the reference signal in a mobile communication system. In the sequence allocation method, R×M sequences specified by a ZC sequence number r (r=1 to R) and a cyclic shift sequence number m (m=1 to M) are divided into a plurality of sequence groups X (X=1 to R) in accordance with the transmission band width of the reference signal, so that the ZC sequence is allocated to each cell in each sequence group unit. When it is assumed that R=9 and M=6, the number of sequences is 54. Each of the sequence groups is formed by two sequences. Accordingly, the number of sequence groups is 27. The 27 types of sequence groups are allocated to each cell.

公开(公告)号：US20190215108A1

公开(公告)日：2019-07-11

申请号：US16358559

申请日：2019-03-19

Applicant: Panasonic Corporation

Inventor： Seigo Nakao ,  Daichi Imamura

IPC: H04L1/18 ,  H04W72/04 ,  H04L27/26 ,  H04L1/00 ,  H04L5/00 ,  H04L25/03 ,  H04J13/22 ,  H04J13/00

Abstract: Provided is a radio communication device which can make Acknowledgement (ACK) reception quality and Negative Acknowledgement (NACK) reception quality to be equal to each other. The device includes: a scrambling unit (214) which multiplies a response signal after modulated, by a scrambling code “1” or “e−j(π/2)” so as to rotate a constellation for each of response signals on a cyclic shift axis; a spread unit (215) which performs a primary spread of the response signal by using a Zero Auto Correlation (ZAC) sequence set by a control unit (209); and a spread unit (218) which performs a secondary spread of the response signal after subjected to the primary spread, by using a block-wise spread code sequence set by the control unit (209).

公开(公告)号：US10284342B2

公开(公告)日：2019-05-07

申请号：US15808708

申请日：2017-11-09

Applicant: Panasonic Corporation

Inventor： Seigo Nakao ,  Daichi Imamura

IPC: H04B1/707 ,  H04L1/18 ,  H04J13/00 ,  H04J13/22 ,  H04L5/00 ,  H04L25/03 ,  H04L27/26 ,  H04W72/04 ,  H04L1/00 ,  H04L1/12

Abstract: Provided is a radio communication device which can make Acknowledgement (ACK) reception quality and Negative Acknowledgement (NACK) reception quality to be equal to each other. The device includes: a scrambling unit (214) which multiplies a response signal after modulated, by a scrambling code “1” or “e−j(π/2)” so as to rotate a constellation for each of response signals on a cyclic shift axis; a spread unit (215) which performs a primary spread of the response signal by using a Zero Auto Correlation (ZAC) sequence set by a control unit (209); and a spread unit (218) which performs a secondary spread of the response signal after subjected to the primary spread, by using a block-wise spread code sequence set by the control unit (209).

公开(公告)号：US09992798B2

公开(公告)日：2018-06-05

申请号：US15161973

申请日：2016-05-23

Applicant: Panasonic Corporation

Inventor： Daichi Imamura ,  Takashi Iwai ,  Kazunori Inogai ,  Sadaki Futagi ,  Atsushi Matsumoto

IPC: H04W4/00 ,  H04W72/04 ,  H04W74/08 ,  H04J13/00 ,  H04J13/22 ,  H04B1/707 ,  H04L23/02 ,  H04B1/7083 ,  H04L5/00 ,  H04J13/10 ,  H04L27/26

CPC classification number: H04W74/0833 ,  H04B1/707 ,  H04B1/7083 ,  H04B2201/70702 ,  H04B2201/70713 ,  H04J13/0062 ,  H04J13/102 ,  H04J13/22 ,  H04L5/0048 ,  H04L23/02 ,  H04L27/2613 ,  H04W72/04 ,  H04W72/0446 ,  H04W72/0453 ,  H04W74/0875

Abstract: A sequence allocating method and apparatus wherein in a system where a plurality of different Zadoff-Chu sequences or GCL sequences are allocated to a single cell, the arithmetic amount and circuit scale of a correlating circuit at a receiving end can be reduced. In ST201, a counter (a) and a number (p) of current sequence allocations are initialized, and in ST202, it is determined whether the number (p) of current sequence allocations is coincident with a number (K) of allocations to one cell. In ST203, it is determined whether the number (K) of allocations to the one cell is odd or even. If K is even, in ST204-ST206, sequence numbers (r=a and r=N−a), which are not currently allocated, are combined and then allocated. If K is odd, in ST207-ST212, for sequences that cannot be paired, one of sequence numbers (r=a and r=N−a), which are not currently allocated, is allocated.

公开(公告)号：US20180131496A1

公开(公告)日：2018-05-10

申请号：US15862429

申请日：2018-01-04

Applicant: Panasonic Corporation

Inventor： Atsushi Matsumoto ,  Daichi Imamura ,  Takashi Iwai ,  Yoshihiko Ogawa ,  Tomofumi Takata ,  Katsuhiko Hiramatsu

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/12 ,  H04W72/08 ,  H04W72/04 ,  H04J11/00 ,  H04W84/04

Abstract: Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit (201) which generates an SRS (Sounding Reference Signal) for measuring uplink line data channel quality; an SRS arrangement unit (202) which frequency-multiplexes the SRS on the SR transmission band and arranges it; and an SRS arrangement control unit (208) which controls SRS frequency multiplex so as to be uniform in frequency without modifying the bandwidth of one SRS multiplex unit in accordance with the fluctuation of the reference signal transmission bandwidth according to the SRS arrangement information transmitted from the base station and furthermore controls the transmission interval of the frequency-multiplexed SRS.

公开(公告)号：US09912432B2

公开(公告)日：2018-03-06

申请号：US15182523

申请日：2016-06-14

Applicant: Panasonic Corporation

Inventor： Yoshihiko Ogawa ,  Daichi Imamura ,  Sadaki Futagi ,  Tomofumi Takata

IPC: H04W76/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/22 ,  H04W16/10 ,  H04B1/38 ,  H04L27/26 ,  H04L5/00 ,  H04W72/04 ,  H04L12/26

CPC classification number: H04J11/005 ,  H04B1/38 ,  H04J13/0062 ,  H04J13/22 ,  H04L5/0048 ,  H04L5/0073 ,  H04L27/2602 ,  H04L43/16 ,  H04W16/10 ,  H04W72/042

Abstract: Provided is a sequence allocation method capable of reducing inter-cell interference of a reference signal when a ZC sequence is used as the reference signal in a mobile communication system. In the sequence allocation method, R×M sequences specified by a ZC sequence number r (r=1 to R) and a cyclic shift sequence number m (m=1 to M) are divided into a plurality of sequence groups X (X=1 to R) in accordance with the transmission band width of the reference signal, so that the ZC sequence is allocated to each cell in each sequence group unit. When it is assumed that R=9 and M=6, the number of sequences is 54. Each of the sequence groups is formed by two sequences. Accordingly, the number of sequence groups is 27. The 27 types of sequence groups are allocated to each cell.

公开(公告)号：US08792580B2

公开(公告)日：2014-07-29

申请号：US13748362

申请日：2013-01-23

Applicant: Panasonic Corporation

Inventor： Yoshihiko Ogawa ,  Daichi Imamura ,  Kenichi Miyoshi ,  Takashi Iwai ,  Tomofumi Takata

IPC: H04L27/00

CPC classification number: H04L25/0258 ,  H04J13/0062 ,  H04J13/10 ,  H04L7/007 ,  H04L7/042 ,  H04W72/042

Abstract: Provided is a cyclic shift sequence generation method which can prevent coming of an interference wave into a desired wave detection window even if a cyclic shift sequence has a high mutual correlation in different bandwidths, thereby improving a channel estimation accuracy in a base station. In this method, a cyclic shift sequence number to be allocated to a cell is decided in advance. Moreover, when the cyclic shift amount between cyclic shift sequences allocated in cells is Δ1 and the cyclic shift amount of the cyclic shift sequences allocated between the cells is Δ2, Δ1 and Δ2 are made different when generating a cyclic shift sequence.

Abstract translation: 提供了一种循环移位序列生成方法，即使循环移位序列在不同带宽中具有高相互关系，也能够防止干扰波进入期望的波检测窗口，从而提高基站中的信道估计精度。 在该方法中，预先决定分配给单元的循环移位序列号。 此外，当在单元中分配的循环移位序列之间的循环移位量为＆Dgr1，并且在单元之间分配的循环移位序列的循环移位量为＆Dgr; 2，＆Dgr; 1和＆Dgr; 2在生成 循环移位序列。

公开(公告)号：US20140185555A1

公开(公告)日：2014-07-03

申请号：US14166555

申请日：2014-01-28

Applicant: Panasonic Corporation

Inventor： Seigo Nakao ,  Akihiko Nishio ,  Daichi Imamura

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0044 ,  H04L1/0027 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0053 ,  H04L27/2634 ,  H04L27/2647 ,  H04W28/06 ,  H04W72/0406 ,  H04W72/042

Abstract: A base station communicates with a terminal, for which an uplink component carrier and downlink component carriers are configured. The base station adjusts a payload size of control information, transmitted in a downlink control channel, based on a basic payload size, and maps the control information onto a search space in at least one of the downlink component carriers. The basic payload size of the control information mapped onto a search space in a primary downlink component carrier is based on a number of information bits obtained from a bandwidth of the primary downlink component carrier, and on a number of information bits obtained from a bandwidth of the uplink component carrier. The basic payload size of the control information mapped onto a search space in a non-primary downlink component carrier is based on a number of information bits obtained from a bandwidth of the non-primary downlink component carrier.

Abstract translation: 基站与终端进行通信，对其构成上行链路分量载波和下行链路分量载波。 基站基于基本有效负载大小来调整在下行链路控制信道中发送的控制信息的有效载荷大小，并且将控制信息映射到至少一个下行链路分量载波中的搜索空间。 映射到主下行链路分量载波中的搜索空间上的控制信息的基本有效负载大小基于从主下行链路分量载波的带宽获得的信息比特数，以及从主下行链路分量载波的带宽获得的信息比特数 上行链路分量载波。 映射到非主要下行链路分量载波中的搜索空间的控制信息的基本有效载荷大小基于从非主要下行链路分量载波的带宽获得的信息比特数。

公开(公告)号：US20140169205A1

公开(公告)日：2014-06-19

申请号：US14179905

申请日：2014-02-13

Applicant: Panasonic Corporation

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

IPC: H04W24/08

CPC classification number: H04W72/005 ,  H04B17/318 ,  H04B17/345 ,  H04L5/0073 ,  H04W24/08 ,  H04W24/10 ,  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.

Abstract translation: 提供了能够高精度地测量与切换目的地的通信质量的无线电通信终端。 无线电通信终端能够与基站或中继节点通信，并且包括：接收机，其接收包括与相邻小区的测量质量的测量有关的信息的控制信息; 从与所述测量有关的信息中提取作为仅执行来自连接到所述基站的所述中继节点的信号的信号的子帧的，应当执行所述测量的子帧的信息的提取器; 测量部，其基于所提取的关于应当进行测量的子帧的信息，在子帧的基础上进行测量; 以及将测量结果发送到基站或中继节点的发射机。