公开(公告)号：US20130116000A1

公开(公告)日：2013-05-09

申请号：US13661874

申请日：2012-10-26

Applicant: NEC CORPORATION

Inventor： Toshifumi NAKAMURA ,  Kojiro HAMABE ,  Masayuki ARIYOSHI ,  Kazushi MURAOKA

IPC: H04W52/04

CPC classification number: H04W52/0206 ,  H04W24/02 ,  H04W28/0289 ,  H04W52/0203 ,  H04W52/0274 ,  H04W52/04 ,  H04W52/325 ,  H04W72/0406 ,  H04W88/08 ,  Y02D70/00 ,  Y02D70/164

Abstract: [Problems] Because it is not possible to reduce sufficiently the number of base stations that starts uselessly in spite of being in low traffic state, it is not possible to lower interference between adjacent cells and power consumption sufficiently.[Measures] A base station starts transmission of a control signal with predetermined power when communication between other base station and a mobile station is started and a first predetermined condition is satisfied.

公开(公告)号：US20130115962A1

公开(公告)日：2013-05-09

申请号：US13661896

申请日：2012-10-26

Applicant: NEC CORPORATION

Inventor： Toshifumi NAKAMURA ,  Kojiro HAMABE ,  Masayuki ARIYOSHI ,  Kazushi MURAOKA

IPC: H04W72/04

CPC classification number: H04W52/0206 ,  H04W24/02 ,  H04W28/0289 ,  H04W52/0203 ,  H04W52/0274 ,  H04W52/04 ,  H04W52/325 ,  H04W72/0406 ,  H04W88/08 ,  Y02D70/00 ,  Y02D70/164

Abstract: [Problems] Because it is not possible to reduce sufficiently the number of base stations that starts uselessly in spite of being in low traffic state, it is not possible to lower interference between adjacent cells and power consumption sufficiently.[Measures] A base station starts transmission of a control signal with predetermined power when communication between other base station and a mobile station is started and a first predetermined condition is satisfied.

公开(公告)号：US20180020488A1

公开(公告)日：2018-01-18

申请号：US15709926

申请日：2017-09-20

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA ,  Kojiro HAMABE ,  Jinsock LEE

IPC: H04W74/08 ,  H04L1/16 ,  H04B1/04 ,  H04B1/707 ,  H04B1/16 ,  H04J13/00 ,  H04J13/16 ,  H04W52/48

CPC classification number: H04W74/0866 ,  H04B1/04 ,  H04B1/16 ,  H04B1/707 ,  H04J13/0077 ,  H04J13/16 ,  H04L1/1692 ,  H04W52/48

Abstract: To solve a problem that unless all of a plurality of AICH signature states are correctly decoded, the contents of reception results cannot be recognized and the error rate of signature decoding will be high. In this embodiment, a base station uses, out of a signature combination, the signature of at least one predetermined position to indicate information containing a preamble reception result and uses the signature of a position other than the predetermined position to indicate a transmission profile information number of an uplink channel for notification to a user equipment. Thus, the error rate related to reception results can be reduced as compared with the case where a single signature combination is used to notify all pieces of information.

公开(公告)号：US20160353341A1

公开(公告)日：2016-12-01

申请号：US15232213

申请日：2016-08-09

Applicant: NEC CORPORATION

Inventor： Kojiro HAMABE ,  Jinsock LEE

IPC: H04W36/00 ,  H04W36/32 ,  H04W36/30

CPC classification number: H04W36/0094 ,  H04W24/10 ,  H04W36/0016 ,  H04W36/30 ,  H04W36/32 ,  H04W88/08

Abstract: A mobile station determines, in accordance with reception quality of a radio signal from a base station, a measurement cycle of a predetermined measurement on a link status and/or on/off of the predetermined measurement and controls execution of the predetermined measurement based on the determination.

公开(公告)号：US20130229970A1

公开(公告)日：2013-09-05

申请号：US13857266

申请日：2013-04-05

Applicant: NEC CORPORATION

Inventor： Hisashi FUTAKI ,  Kojiro HAMABE ,  Jinsock LEE

IPC: H04W72/00

CPC classification number: H04W72/005 ,  H04L5/0032 ,  H04W28/26 ,  H04W48/08 ,  H04W52/327 ,  H04W72/042 ,  H04W72/0433

Abstract: Disclosed is a radio communication system in which transmission parameters, such as MCS of MBSFN, the number of subframes, and a transmission power of a reserved cell, are adaptively output, based on a unicast traffic volume in a MBSFN area, a number of terminals, and a number of cells of the MBSFN area, so that a system throughput in the MBSFN area is maximized while satisfying an MBSFN quality requirement condition.

Abstract translation: 公开了一种基于MBSFN区域中的单播业务量自适应地输出诸如MBSFN的MCS，子帧数和保留小区的发送功率的传输参数的无线通信系统，终端的数量 以及MBSFN区域的多个小区，使得MBSFN区域中的系统吞吐量在满足MBSFN质量要求条件的同时最大化。

公开(公告)号：US20180359767A1

公开(公告)日：2018-12-13

申请号：US16106741

申请日：2018-08-21

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA ,  Kojiro HAMABE

IPC: H04W72/12 ,  H04W88/08 ,  H04L1/00 ,  H04L1/18 ,  H04W28/02 ,  H04W72/08 ,  H04W72/00 ,  H04W52/02 ,  H04L29/08 ,  H04W92/12

CPC classification number: H04W72/12 ,  H04L1/00 ,  H04L1/1887 ,  H04L69/323 ,  H04L69/324 ,  H04W28/0205 ,  H04W52/0261 ,  H04W72/005 ,  H04W72/085 ,  H04W72/1257 ,  H04W88/08 ,  H04W88/085 ,  H04W92/12 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262

Abstract: A radio station (1) includes a first part (1A) and at least one second part (1B). The second part (1B) can be arranged so as to be physically separated from the first part (1A) and is connected to the first part (1A) via a transmission line (40) so as to be able to communicate with the first part (1A). The first part (1A) includes a bearer termination unit (10) capable of terminating at least one bearer between an upper network and the radio station (1). The second part (1B) includes a physical layer signal processing unit (12) that performs physical layer signal processing. The physical layer signal processing includes channel coding and decoding for user data pertaining to a first mobile station connected to the second part (1B) among a plurality of mobile stations.

公开(公告)号：US20170079055A1

公开(公告)日：2017-03-16

申请号：US15358674

申请日：2016-11-22

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA ,  Kojiro HAMABE

IPC: H04W72/12

CPC classification number: H04W72/1205 ,  H04L5/003 ,  H04L69/324 ,  H04W4/06 ,  H04W72/04 ,  H04W72/12 ,  H04W88/08 ,  H04W88/085

Abstract: A radio station (1) includes a first part (1A) and at least one second part (1B). The second part (1B) can be arranged so as to be physically separated from the first part (1A) and is connected to the first part (1A) via a transmission line (40) so as to be able to communicate with the first part. The first part (1A) performs dynamic scheduling to allocate a plurality of radio resources to a plurality of mobile stations or user data. The second part (1B) performs signal processing including channel coding for transmitting downlink user data to an air interface and channel decoding for restoring uplink user data from a signal received from the air interface.

Abstract translation: 无线电台（1）包括第一部分（1A）和至少一个第二部分（1B）。 第二部分（1B）可以布置成与第一部分（1A）物理分离，并且经由传输线（40）连接到第一部分（1A），以便能够与第一部分 。 第一部分（1A）执行动态调度以将多个无线电资源分配给多个移动站或用户数据。 第二部分（1B）执行信号处理，包括用于向空中接口发送下行链路用户数据的信道编码和用于从从空中接口接收的信号中恢复上行链路用户数据的信道解码。

公开(公告)号：US20170041943A1

公开(公告)日：2017-02-09

申请号：US15331404

申请日：2016-10-21

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA ,  Kojiro HAMABE

IPC: H04W72/12

CPC classification number: H04W72/1263 ,  H04L1/18 ,  H04L1/1812 ,  H04L27/2628 ,  H04L69/22 ,  H04W72/12 ,  H04W72/1236 ,  H04W72/1252 ,  H04W72/1257 ,  H04W88/085

Abstract: A radio station (1) includes a first part (1A) and a second part (1B). The second part (1B) can be arranged so as to be physically separated from the first part (1A) and is connected to the first part (1A) via a transmission line (40) so as to be able to communicate with the first part. Each of the first part (1A) and the second part (1B) includes a digital signal processing unit (11A, 11B) and is capable of alternatively performing digital signal processing for user data. An analog signal processing unit (13) arranged in the second part performs analog signal processing including at least one of frequency conversion and power amplification to provide an air interface to a mobile station.

Abstract translation: 无线电台（1）包括第一部分（1A）和第二部分（1B）。 第二部分（1B）可以布置成与第一部分（1A）物理分离，并且经由传输线（40）连接到第一部分（1A），以便能够与第一部分 。 第一部分（1A）和第二部分（1B）中的每一个包括数字信号处理单元（11A，11B），并且能够交替地对用户数据执行数字信号处理。 布置在第二部分中的模拟信号处理单元（13）执行包括频率转换和功率放大中的至少一个的模拟信号处理，以向移动台提供空中接口。