公开(公告)号：US10448298B2

公开(公告)日：2019-10-15

申请号：US16113463

申请日：2018-08-27

申请人： NEC CORPORATION

发明人： Hiroaki Aminaka ,  Yasuhiro Mizukoshi ,  Ippei Akiyoshi

IPC分类号： H04W36/14 ,  H04W36/28 ,  H04W36/00 ,  H04W88/10 ,  H04W88/06 ,  H04W88/16

摘要： A base station (1) is connectable to a mobile station (4) by a plurality of Radio Access Technologies (RATs) including first and second RATs. The base station (1) is configured to be able to use a communication path (400) that passes through a first upstream network (140) corresponding to the first RAT, when the mobile station (4) performs communication via the second RAT. This enables, for example, efficient use of the upstream networks when the Multi-RAT base station (1) supports a plurality of upstream networks.

公开(公告)号：US10440630B2

公开(公告)日：2019-10-08

申请号：US14655842

申请日：2013-08-06

申请人： NEC Corporation

发明人： Hiroaki Aminaka ,  Hisashi Futaki

IPC分类号： H04W40/24 ,  H04W16/32 ,  H04W36/04 ,  H04W72/04 ,  H04W28/18 ,  H04W92/20 ,  H04W84/04 ,  H04W76/15

摘要： A first base station (1) is configured to send, to a second base station (2), first configuration information that is necessary to establish a data bearer and a data radio bearer in the second base station (2) for a C/U-plane split scenario (S105). Further, the first base station (1) is configured to keep the first configuration information in the first base station (1) even after the data bearer and the data radio bearer are established in the second base station (2) (S109). It is thus, for example, possible to contribute to a reduction in a path switch delay when a UE moves between cells in the C/U-plane split scenario.

公开(公告)号：US10356825B2

公开(公告)日：2019-07-16

申请号：US16150579

申请日：2018-10-03

申请人： NEC Corporation

发明人： Hiroaki Aminaka ,  Kojiro Hamabe ,  Jinsock Lee

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

摘要： 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：US10117148B2

公开(公告)日：2018-10-30

申请号：US15151218

申请日：2016-05-10

申请人： NEC CORPORATION

发明人： Hiroaki Aminaka ,  Yasuhiro Mizukoshi ,  Ippei Akiyoshi

IPC分类号： H04W36/14 ,  H04W36/28 ,  H04W36/00 ,  H04W88/10 ,  H04W88/06 ,  H04W88/16

摘要： A base station (1) is connectable to a mobile station (4) by a plurality of Radio Access Technologies (RATs) including first and second RATs. The base station (1) is configured to be able to use a communication path (400) that passes through a first upstream network (140) corresponding to the first RAT, when the mobile station (4) performs communication via the second RAT. This enables, for example, efficient use of the upstream networks when the Multi-RAT base station (1) supports a plurality of upstream networks.

公开(公告)号：US10091806B2

公开(公告)日：2018-10-02

申请号：US15331404

申请日：2016-10-21

申请人： NEC Corporation

发明人： Hiroaki Aminaka ,  Kojiro Hamabe

IPC分类号： H04W72/12 ,  H04W88/08 ,  H04L1/18 ,  H04L27/26 ,  H04L29/06

摘要： 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.

公开(公告)号：US10039150B2

公开(公告)日：2018-07-31

申请号：US15450996

申请日：2017-03-06

申请人： NEC Corporation

发明人： Hisashi Futaki ,  Hiroaki Aminaka

IPC分类号： H04W72/04 ,  H04W76/15 ,  H04W76/02

摘要： A radio terminal (3) has a function of establishing a second radio connection on a second cell (20) operated by a second radio station (2) while a first radio connection on a first cell (10) operated by a first radio station (1) is established. The first radio station (1) sets up a control bearer for transferring at least a control signal regarding the radio terminal (3) between an upper network (4) and the first radio station (1). Further, the first radio station (1) is configured to trigger setup of a second bearer for transferring user data of the radio terminal (3) between the upper network (4) and the second radio station (2). It is thus for example possible to enable a single radio terminal to simultaneously set up bearers on cells of a plurality of radio stations, in order to achieve carrier aggregation of cells operated by different radio stations.

公开(公告)号：US09801212B2

公开(公告)日：2017-10-24

申请号：US15094161

申请日：2016-04-08

申请人： NEC Corporation

发明人： Hiroaki Aminaka ,  Kojiro Hamabe ,  Jinsock Lee

IPC分类号： H04W4/00 ,  H04W74/08 ,  H04B1/707 ,  H04J13/00 ,  H04J13/16 ,  H04B1/04 ,  H04B1/16 ,  H04L1/16 ,  H04W52/48

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

摘要： 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：US09781618B2

公开(公告)日：2017-10-03

申请号：US15199264

申请日：2016-06-30

申请人： NEC Corporation

发明人： Hisashi Futaki ,  Hiroaki Aminaka ,  Hiroto Sugahara ,  Yoshikazu Kakura ,  Kazushi Muraoka

IPC分类号： H04W72/00 ,  H04W24/08 ,  H04W16/14 ,  H04W88/02 ,  H04B17/309 ,  H04W72/04 ,  H04B17/24 ,  H04B17/318 ,  H04B17/382 ,  H04W24/10 ,  H04L5/00 ,  H04W72/08 ,  H04W76/04 ,  H04W88/06 ,  H04W88/10

CPC分类号： H04W24/08 ,  H04B17/24 ,  H04B17/309 ,  H04B17/318 ,  H04B17/382 ,  H04L5/0048 ,  H04W16/14 ,  H04W24/10 ,  H04W72/0453 ,  H04W72/085 ,  H04W76/27 ,  H04W88/02 ,  H04W88/06 ,  H04W88/10

摘要： A radio terminal (2) is provided that can be used in a radio communication system (100) and can communicate with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100).

公开(公告)号：US09775145B2

公开(公告)日：2017-09-26

申请号：US14430969

申请日：2013-06-19

申请人： NEC Corporation

发明人： Hisashi Futaki ,  Hiroaki Aminaka

IPC分类号： H04W84/12 ,  H04W72/04 ,  H04L5/00 ,  H04W76/02

摘要： A radio terminal (3) has a function of establishing a second radio connection on a second cell (20) operated by a second radio station (2) while a first radio connection on a first cell (10) operated by a first radio station (1) is established. The first radio station (1) sets up a control bearer for transferring at least a control signal regarding the radio terminal (3) between an upper network (4) and the first radio station (1). Further, the first radio station (1) is configured to trigger setup of a second bearer for transferring user data of the radio terminal (3) between the upper network (4) and the second radio station (2). It is thus for example possible to enable a single radio terminal to simultaneously set up bearers on cells of a plurality of radio stations, in order to achieve carrier aggregation of cells operated by different radio stations.

公开(公告)号：US09538505B2

公开(公告)日：2017-01-03

申请号：US14921677

申请日：2015-10-23

申请人： NEC Corporation

发明人： Hiroaki Aminaka ,  Kojiro Hamabe

IPC分类号： H04W72/04 ,  H04W72/12 ,  H04L29/08 ,  H04L5/00 ,  H04W4/06 ,  H04W88/08

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

摘要： 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.

摘要翻译： 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。