公开(公告)号：US12155422B2

公开(公告)日：2024-11-26

申请号：US17422671

申请日：2020-01-16

Applicant: NEC Corporation

Inventor： Takamichi Inoue ,  Shinichi Anami

IPC: H04B17/391 ,  H04B17/23 ,  H04W24/08 ,  H04W84/12

Abstract: The wireless communication quality visualization device 10 includes condition setting means 11 which sets measurement condition that can identify a target whose communication quality is measured, and extraction condition that can identify data to be displayed in data on communication quality collected according to the measurement condition, and display data generation means 12 which generates display data for displaying spatial and temporal communication quality based on the data extracted according to the extraction condition.

公开(公告)号：US20230217262A1

公开(公告)日：2023-07-06

申请号：US17927980

申请日：2021-05-26

Applicant: NEC Corporation

Inventor： Takamichi Inoue

IPC: H04W16/18 ,  H04W72/54 ,  H04W48/20

CPC classification number: H04W16/18 ,  H04W48/20 ,  H04W72/54

Abstract: An object of the present disclosure is to provide a server device capable of processing information related to a plurality of areas without mixing the information. The server device according to the present disclosure includes: a communication unit (11) that receives, from a plurality of sensor devices that have collected a packet being transmitted from a first wireless terminal, sensor information in which area identification information for identifying an area in which the sensor device is installed is assigned to wireless quality information determined based on the packet, the wireless quality information indicating wireless quality, in a predetermined period, of the area; a selection unit (12) that selects first area identification information from a plurality of pieces of area identification information, based on the wireless quality information, when a received plurality of pieces of the sensor information include a plurality of pieces of the area identification information; and a display unit (13) that displays information related to the wireless quality information in the area indicated by the first area identification information.

公开(公告)号：US20220295460A1

公开(公告)日：2022-09-15

申请号：US17828098

申请日：2022-05-31

Applicant: NEC Corporation

Inventor： Kenji KOYANAGI ,  Takamichi Inoue ,  Le Liu ,  Yoshikazu Kakura

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

Abstract: To solve a problem that although the increase of the number of frequency blocks by allocating discontinuous subcarriers (RBs) as in OFDM enables an increase in multi-diversity effect and an improvement in throughput, the number of RB allocation patterns increases with the increase of the number of frequency blocks, resulting in an increase in the amount of information relating to the allocated RBs, the resource block allocation unit is determined when resource blocks discontinuous on the frequency axis are allocated to a terminal, and the number of bits of scheduling information indicating the allocated resource blocks by using Tree Based is set to the number of bits corresponding to the determined allocation unit.

公开(公告)号：US10805929B2

公开(公告)日：2020-10-13

申请号：US16149362

申请日：2018-10-02

Applicant: NEC CORPORATION

Inventor： Takamichi Inoue ,  Kenji Koyanagi ,  Le Liu ,  Yoshikazu Kakura

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W88/02 ,  H04W88/08

Abstract: A base station includes a transmitter configured to transmit a downlink control information to a user equipment, the downlink control information being generated based on one of (1) a first uplink allocation information indicating a first frequency block corresponding to a first plurality of subcarriers which are contiguous in frequency and (2) a second uplink allocation information indicating a second frequency block corresponding to a second plurality of subcarriers which are contiguous in frequency and a third frequency block corresponding to a third plurality of subcarriers which are contiguous in frequency, the second frequency block and the third frequency block being separated in frequency.

公开(公告)号：US09735938B2

公开(公告)日：2017-08-15

申请号：US15075346

申请日：2016-03-21

Applicant: NEC CORPORATION

Inventor： Takamichi Inoue ,  Yoshikazu Kakura

IPC: H04L5/00 ,  H04W28/20 ,  H04L27/26 ,  H04J13/00

CPC classification number: H04L5/005 ,  H04B2201/70701 ,  H04J13/0059 ,  H04J13/0077 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2613 ,  H04W28/20

Abstract: In a radio communication system, transmission of CAZAC sequences as the pilot signal sequences by using code division multiplexing as at least one of user multiplexing schemes, is done by dividing a system band as a frequency band usable in the system into frequency blocks B1 and B2 having bandwidths W1 and W2, generating the pilot signals of the frequency blocks B1 and B2 with a single carrier, using the pilot signal sequences having sequence lengths L1 and L2 corresponding to frequency blocks B1 and B2 respectively; and, transmitting the generated pilot signals as the pilot signals corresponding individual users, with multicarriers using an arbitrary number of frequency blocks among the plural frequency blocks.

公开(公告)号：US09692570B2

公开(公告)日：2017-06-27

申请号：US15240042

申请日：2016-08-18

Applicant: NEC CORPORATION

Inventor： Takamichi Inoue ,  Yoshikazu Kakura

IPC: H04L5/00 ,  H04L1/16 ,  H04B7/216 ,  H04W72/04 ,  H04J13/00 ,  H04L27/26 ,  H04L1/00

CPC classification number: H04L5/005 ,  H04B7/216 ,  H04J13/0062 ,  H04L1/0026 ,  H04L1/1671 ,  H04L5/0016 ,  H04L5/0053 ,  H04L5/0092 ,  H04L27/2628 ,  H04W72/042

Abstract: A reference signal multiplexing method for multiple mobile stations includes: grouping together control signals for the multiple mobile stations; and multiplexing reference signals corresponding to the control signals by CDM over the same bandwidth as that of grouped control signals.