公开(公告)号：US10375606B2

公开(公告)日：2019-08-06

申请号：US14655984

申请日：2013-11-20

申请人： NEC Corporation

发明人： Hisashi Futaki ,  Hiroaki Aminaka

IPC分类号： H04W36/00 ,  H04W36/08 ,  H04W36/28 ,  H04W76/20 ,  H04W76/28 ,  H04B7/022 ,  H04W76/15

摘要： A radio network (6) and a radio terminal (4) are configured to, when the radio terminal (4) is using a first cell (10) served by a first radio station (1) as a primary cell and a second cell (20) served by a second radio station (2) as a secondary cell, change the primary cell from the first cell (10) to a third cell (30) served by a third radio station (3) while keeping communication status information regarding the radio terminal (1) on the second cell (20). It is thus, for example, possible to enable a communication service in the secondary cell to be continued even after the primary cell is changed when the primary cell is changed during execution of carrier aggregation (e.g., Inter-eNB CA) on a plurality of cells served by different radio stations.

公开(公告)号：US10356639B2

公开(公告)日：2019-07-16

申请号：US15996761

申请日：2018-06-04

申请人： NEC CORPORATION

发明人： Hisashi Futaki ,  Hiroaki Aminaka

IPC分类号： H04W24/00 ,  H04W24/08 ,  H04W24/10 ,  H04L12/26 ,  H04W76/27 ,  H04W8/24 ,  H04W88/02 ,  H04W84/04

摘要： A radio terminal, which has a function to collect and report measurement information designated by a radio network, comprises: means for receiving collection/reporting control information related to the radio terminal's execution of at least one of the collection of measurement information and the reporting of the measurement information to the radio network; and control means for executing, based on the collection/reporting control information, at least one of the collection and the reporting if execution determination information, which is related to at least one of the collection of the measurement information and the reporting of the measurement information to be executed by the local terminal, satisfies a given determination criterion.

公开(公告)号：US10341916B2

公开(公告)日：2019-07-02

申请号：US15114694

申请日：2014-09-04

申请人： NEC Corporation

发明人： Hisashi Futaki

IPC分类号： H04W36/00 ,  H04W36/08 ,  H04W36/04 ,  H04W36/30 ,  H04L12/16 ,  H04W4/06 ,  H04W36/16 ,  H04L12/18 ,  H04W4/70 ,  H04W48/20

摘要： A Machine-to-machine (M2M) terminal (11) comprises a radio communication unit (111) and a controller (112). The radio communication unit (111) is configured to communicate with a base station (13). The controller (112) is configured to change at least one of a cell selection operation, a cell reselection operation, and a handover operation according to whether a specific coverage enhancement processing is required or according to whether the specific coverage enhancement processing is supported by at least one of a cell (13) in which the M2M terminal (11) camps on and a neighboring cell (14) of the cell (13) which the M2M terminal (11) camps on. It is thus possible to provide an improved technique for allowing the M2M terminal that is supporting a special coverage enhancement processing for M2M terminals to camp on an appropriate cell.

公开(公告)号：US10306645B2

公开(公告)日：2019-05-28

申请号：US15114714

申请日：2014-09-04

申请人： NEC Corporation

发明人： Hisashi Futaki

IPC分类号： H04W72/00 ,  H04W72/04 ,  H04W16/00 ,  H04W4/70 ,  H04W76/10 ,  H04W48/16 ,  H04B7/24 ,  H04B7/26

摘要： A Machine-to-machine (M2M) terminal (11) is configured to receive a first notification from a base station (13) and to transmit a second notification to the base station (13) when establishing a radio connection with the base station (13) after reception of the first notification or while performing a procedure for establishing a bearer between the M2M terminal (11) and a core network (14) after reception of the first notification. The first notification indicates whether specific coverage enhancement processing is supported in a cell (130) of the base station (13) in which the M2M terminal (11) is located. The second notification indicates that the specific coverage enhancement processing is required or being executed by the M2M terminal (11). It is thus possible to provide an improvement to allow the M2M terminal to determine necessity of special coverage enhancement processing for M2M terminals.

公开(公告)号：US10306478B2

公开(公告)日：2019-05-28

申请号：US15523889

申请日：2015-10-09

申请人： NEC Corporation

发明人： Hisashi Futaki

IPC分类号： H04W72/00 ,  H04W16/14 ,  H04W48/16 ,  H04W56/00 ,  H04W72/04

摘要： A radio terminal (3) operates to perform a predetermined process regarding a first cell (Cell #2) on an unlicensed frequency (F2) based on a predetermined relationship between a frame timing of a first serving cell (Cell #1) using a licensed frequency (F1) and a frame timing of the first cell (Cell #2) using the unlicensed frequency (F2). This contributes, for example, to enabling a radio terminal to differentiate among two or more cells when these cells use the same cell identifier.

公开(公告)号：US10264465B2

公开(公告)日：2019-04-16

申请号：US15523889

申请日：2015-10-09

申请人： NEC Corporation

发明人： Hisashi Futaki

IPC分类号： H04W72/00 ,  H04W16/14 ,  H04W48/16 ,  H04W56/00 ,  H04W72/04

摘要： A radio terminal (3) operates to perform a predetermined process regarding a first cell (Cell #2) on an unlicensed frequency (F2) based on a predetermined relationship between a frame timing of a first serving cell (Cell #1) using a licensed frequency (F1) and a frame timing of the first cell (Cell #2) using the unlicensed frequency (F2). This contributes, for example, to enabling a radio terminal to differentiate among two or more cells when these cells use the same cell identifier.

公开(公告)号：US10257756B2

公开(公告)日：2019-04-09

申请号：US14412810

申请日：2013-07-04

申请人： NEC Corporation

发明人： Hisashi Futaki

IPC分类号： H04W36/00 ,  H04W36/08 ,  H04W48/20

摘要： The present invention is a radio communication system in which a radio station and a radio terminal communicate with each other. The radio communication system has a control means with which at least one of the radio stations controls a plurality of types of cells by using one radio access technology, a recognition means with which the radio terminal recognizes the types of the cells, and a cell selection means with which the radio terminal selects the cell based on cell selection criteria based on the types of the cells.

公开(公告)号：US10231158B2

公开(公告)日：2019-03-12

申请号：US15114694

申请日：2014-09-04

申请人： NEC Corporation

发明人： Hisashi Futaki

IPC分类号： H04W36/00 ,  H04W36/08 ,  H04W4/70 ,  H04W36/16 ,  H04W36/04 ,  H04W36/30 ,  H04L12/16 ,  H04W4/06 ,  H04L12/18 ,  H04W48/20

摘要： A Machine-to-machine (M2M) terminal (11) comprises a radio communication unit (111) and a controller (112). The radio communication unit (111) is configured to communicate with a base station (13). The controller (112) is configured to change at least one of a cell selection operation, a cell reselection operation, and a handover operation according to whether a specific coverage enhancement processing is required or according to whether the specific coverage enhancement processing is supported by at least one of a cell (13) in which the M2M terminal (11) camps on and a neighboring cell (14) of the cell (13) which the M2M terminal (11) camps on. It is thus possible to provide an improved technique for allowing the M2M terminal that is supporting a special coverage enhancement processing for M2M terminals to camp on an appropriate cell.

公开(公告)号：US10039010B2

公开(公告)日：2018-07-31

申请号：US15583701

申请日：2017-05-01

申请人： NEC Corporation

发明人： Hisashi Futaki

IPC分类号： H04W16/26 ,  H04W4/00 ,  H04W8/22 ,  H04W68/00 ,  H04W92/10

摘要： A base station (13) is configured to receive, from a Machine-to-machine (M2M) terminal (11) or a core network (14), history information indicating whether or not specific coverage enhancement processing was executed in previous communication with the M2M terminal (11). Further, the base station (13) is configured to control communication using the specific coverage enhancement processing between the M2M terminal (11) and the base station (13) based on the history information received from the M2M terminal (11) or the core network (14). It is thus possible to contribute to improving efficiency of determination regarding whether to apply a special coverage enhancement processing to the M2M terminal.

公开(公告)号：US10028158B2

公开(公告)日：2018-07-17

申请号：US15668936

申请日：2017-08-04

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 ,  H04W72/04 ,  H04W88/10 ,  H04W88/06 ,  H04W76/04 ,  H04W16/14 ,  H04W88/02 ,  H04B17/318 ,  H04W72/08 ,  H04B17/309 ,  H04L5/00 ,  H04B17/382 ,  H04B17/24 ,  H04W76/27

摘要： A radio terminal (2) is used in a radio communication system (100) and communicates 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).