公开(公告)号：US20220286936A1

公开(公告)日：2022-09-08

申请号：US17628332

申请日：2020-08-20

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Toshiyuki TAMURA

IPC: H04W36/32 ,  H04W36/08 ,  H04W4/44

Abstract: In order to further facilitate continuous communication with a flying mobile terminal, a first radio station according to an example aspect of the present disclosure includes a control section configured to, in a handover of a mobile terminal configured to move according to flight path information, control the handover according to the flight path information from a second radio station to the first radio station; and a communication processing section configured to transmit a message including information related to acceptance of the handover to the second radio station without receiving a request message for the handover transmitted from the second radio station.

公开(公告)号：US20220182885A1

公开(公告)日：2022-06-09

申请号：US17670256

申请日：2022-02-11

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Sadafuku HAYASHI

IPC: H04W28/20 ,  H04W76/27 ,  H04W76/10 ,  H04W72/04 ,  H04W80/02

Abstract: A radio access network (RAN) node (11) is configured to send, to another RAN node (12), first control information regarding at least one of one or more bandwidth parts (BWPs) configured in a system bandwidth. It is thus, for example, possible to contribute to inter-radio access network (RAN) node (e.g., inter-gNB) signaling enhanced to handle bandwidth parts.

公开(公告)号：US20220104087A1

公开(公告)日：2022-03-31

申请号：US17420980

申请日：2019-10-31

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Sadafuku HAYASHI

IPC: H04W36/08 ,  H04W36/26

Abstract: A Distributed Unit (DU) (2) of a base station sends a first message to a Central Unit (1) of the base station in response to detecting initiation of a conditional mobility of a radio terminal (3) from a first cell served by the DU (2) to a second cell. It is thus for example possible to allow a Central Unit (CU) to be aware of satisfaction of an execution condition of a conditional mobility (or initiation of the conditional mobility).

公开(公告)号：US20210385867A1

公开(公告)日：2021-12-09

申请号：US17284904

申请日：2019-08-20

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI

IPC: H04W74/08

Abstract: A radio terminal (2) attempts to receive a second message of a 2-step random access procedure after transmitting a first message of the 2-step random access procedure. In response to successfully receiving the second message of the 2-step random access procedure and determining that the second message explicitly or implicitly indicates a fallback to a 4-step random access procedure, the radio terminal (2) further attempts to receive a control message that contains an uplink grant indicating uplink resources available for transmission of a third message of a 4-step random access procedure. This contributes to, for example, reducing the load on a radio terminal that supports a fallback from the 2-step random access procedure to the 4-step random access procedure.

公开(公告)号：US20210045022A1

公开(公告)日：2021-02-11

申请号：US17077238

申请日：2020-10-22

Applicant: NEC CORPORATION

Inventor： Kengo OKETANI ,  Hisashi FUTAKI

IPC: H04W36/00 ,  H04W16/28 ,  H04W36/08 ,  H04B7/06

Abstract: [Object] To make it possible to further increase a possibility of a success in a handover.
[Solution] A first apparatus of the present invention includes: a first communication processing unit configured to transmit reference signals using beamforming; and a second communication processing unit configured to receive a handover message from a source base station of a handover of a terminal apparatus. The handover message includes beam related information related to a beam. The first communication processing unit is configured to receive an access signal of the terminal apparatus based on the beam related information.

公开(公告)号：US20200296712A1

公开(公告)日：2020-09-17

申请号：US16886502

申请日：2020-05-28

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI

IPC: H04W72/04 ,  H04W4/70 ,  H04W48/16 ,  H04W16/00 ,  H04W76/10

Abstract: 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：US20200221370A1

公开(公告)日：2020-07-09

申请号：US16820127

申请日：2020-03-16

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI

IPC: H04W48/10 ,  H04W88/02 ,  H04W48/16 ,  H04W76/18 ,  H04W88/10

Abstract: In one implementation, a NAS layer (202) of a radio terminal (1) obtains, from an AS layer (208) of the radio terminal (1), either or both of: information regarding one or more access barring categories (401) broadcasted by a serving network (2); and the number of the one or more access barring categories. If barring information corresponding to a first access barring category (404) to which an application that triggers a session establishment (403) belongs is not broadcasted by an eNB (2), the NAS layer (202) replaces the first access barring category (404) with a particular access barring category among the one or more access barring categories (401) broadcasted by the serving network (202).

公开(公告)号：US20200187209A1

公开(公告)日：2020-06-11

申请号：US16637089

申请日：2018-08-07

Applicant: NEC Corporation

Inventor： Toshiyuki TAMURA ,  Naoaki SUZUKI ,  Hisashi FUTAKI

IPC: H04W72/04 ,  H04W76/15

Abstract: A communication terminal capable of determining whether or not it can perform DC, a base station, and a communication method are provided. A communication terminal (30) according to the present disclosure includes a communication unit (31) that simultaneously communicates with a master base station (10) associated with a first radio access technology and a secondary base station (20) associated with a second radio access technology, and a control unit (32) that specifies, when it is notified by the master base station (10) that it can provide dual connectivity using the second radio access technology, at least one frequency band supported by the secondary base station (20), the secondary base station being configured to provide the dual connectivity in cooperation with the master base station (10).

公开(公告)号：US20200154329A1

公开(公告)日：2020-05-14

申请号：US16739309

申请日：2020-01-10

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA ,  Hisashi FUTAKI

IPC: H04W36/08 ,  H04W36/00 ,  H04W36/30 ,  H04W76/32 ,  H04W36/12

Abstract: 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. Further, the first base station (1) is configured to send, to a third base station (3), configuration information (e.g., LPN information) regarding the data bearer established in the second base station (2) when a mobile station (4) moves from a first cell (10) to a third cell (30) (S103 and S104). It is thus, for example, possible to contribute to a reduction in wasted signaling when a UE moves between cells in the C/U-plane split scenario.

公开(公告)号：US20200092736A1

公开(公告)日：2020-03-19

申请号：US16692460

申请日：2019-11-22

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroaki AMINAKA ,  Hiroto SUGAHARA ,  Yoshikazu KAKURA ,  Kazushi MURAOKA

IPC: H04W24/08 ,  H04W76/27 ,  H04B17/309 ,  H04B17/24 ,  H04B17/318 ,  H04B17/382 ,  H04W24/10 ,  H04W16/14 ,  H04W88/02 ,  H04W72/04 ,  H04W88/10 ,  H04L5/00 ,  H04W72/08

Abstract: 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).