-
公开(公告)号:US20250071668A1
公开(公告)日:2025-02-27
申请号:US18710706
申请日:2022-12-07
Applicant: NEC Corporation
Inventor: Kundan TIWARI , Toshiyuki TAMURA , Iskren IANEV
Abstract: There is a service requirement defined in 3GPP TS 22.261. However, there is no clear mechanism defined in 3GPP specifications how the requirement can be realized. A method of a User Equipment (UE) includes sending first information indicating a first network slice which is available in a first network where the UE is located and second information indicating a second network slice which is required by a service or an application activated in the UE and is not available on the first network. The method includes receiving third information indicating a second network where the second network slice is available.
-
公开(公告)号:US20240172202A1
公开(公告)日:2024-05-23
申请号:US18429824
申请日:2024-02-01
Applicant: NEC Corporation
Inventor: Toshiyuki TAMURA , Naoaki SUZUKI , Hisashi FUTAKI
IPC: H04W72/0453 , H04W76/15
CPC classification number: H04W72/0453 , 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:US20240137756A1
公开(公告)日:2024-04-25
申请号:US18396874
申请日:2023-12-27
Applicant: NEC Corporation
Inventor: Kundan TIWARI , Toshiyuki TAMURA
IPC: H04W12/033 , H04W12/0431 , H04W12/72 , H04W12/73 , H04W12/75 , H04W48/18 , H04W76/10 , H04W76/25
CPC classification number: H04W12/033 , H04W12/0431 , H04W12/72 , H04W12/73 , H04W12/75 , H04W48/18 , H04W76/10 , H04W76/25
Abstract: This disclosure defines a procedure to security protection to sensitive information in AS layer during AS connection establishment procedure. More specifically the disclosure provides a procedure for privacy protection of user subscription and location related information at AS layer during AS connection establishment procedure.
-
公开(公告)号:US20240098626A1
公开(公告)日:2024-03-21
申请号:US18526513
申请日:2023-12-01
Applicant: NEC Corporation
Inventor: Iskren IANEV , Toshiyuki TAMURA
CPC classification number: H04W48/12 , H04W8/20 , H04W8/24 , H04W48/02 , H04W74/0833 , H04W76/27 , H04W84/042
Abstract: User equipment, UE, includes: a receiver configured to receive a parameter indicating whether the UE is restricted or authorized for transmission of user data in a message transmitted on Uplink Synchronization Channel, UL-SCH, from an access network node; and a hardware processor configured to process instructions to determine whether the transmission of the user data in the message is restricted or authorized based on the parameter.
-
公开(公告)号:US20230224779A1
公开(公告)日:2023-07-13
申请号:US17920470
申请日:2021-04-26
Applicant: NEC Corporation
Inventor: Toshiyuki TAMURA , Junya OKABE , Kazuhiro CHIBA , Kouji SHIMIZU , Tomoki NAKAGAWA , Takahiro AOKI
Abstract: A radio terminal (1) determines that the radio terminal (1) is approaching a first station (5), receives from a center server (4) a cell identifier of a first cell corresponding to an entrance gate function (53) of the first station (5), and transmit a message containing the cell identifier to a cellular communication network. The message causes the network to add the first cell (54) as a secondary cell in dual connectivity for the radio terminal (1), enabling the radio terminal (1) to communicate with the entrance gate function (53) via a user plane path including a radio connection of the first cell (54). The radio terminal (1) then communicates with the entrance gate function (53) via the user plane path. This contributes, for example, to reducing latency required to transmit or receive user data in a narrow coverage cell when a radio terminal receives a signal from that cell.
-
公开(公告)号:US20230120587A1
公开(公告)日:2023-04-20
申请号:US18081283
申请日:2022-12-14
Applicant: NEC Corporation
Inventor: Toshiyuki TAMURA , Kouji TAMURA , Takihiro AOKI , Hitoshi NAOE
Abstract: To provide a communication terminal that ensures the coincidence of Paging timing between a UE and a control device when an eDRX parameter is updated in a control device, a communication terminal (10) according to the present disclosure includes a receiving unit (11) for receiving a Tracking Area Registration Accept message or a Location Registration Accept message sent from a control device (30), and a sending unit (12) for sending a Tracking Area Registration Complete message or a Location Registration Complete message to the control device (30) when a first eDRX (Extended Idle Mode DRX) parameter is contained in the Tracking Area Registration Accept message or the Location Registration Accept message.
-
公开(公告)号:US20220369207A1
公开(公告)日:2022-11-17
申请号:US17623337
申请日:2020-06-29
Applicant: NEC Corporation
Inventor: Iskren IANEV , Toshiyuki TAMURA
Abstract: The invention proposes solutions for monitoring and controlling the maximum number of the UEs registered in a Network Slice, the maximum number of the established PDU Sessions in a Network Slice and the maximum number of the Uplink and Downlink data rates per UE in a Network Slice. The invention also enforces access and service restriction in a Network Slice when the Network Slice parameters boundaries have been reached.
-
公开(公告)号:US20220319340A1
公开(公告)日:2022-10-06
申请号:US17633642
申请日:2020-09-01
Applicant: NEC Corporation
Inventor: Toshiyuki TAMURA
Abstract: There is provided a management apparatus configured to allocate a plurality of zones capable of identifying a three-dimensional space in common among a plurality of mobile communication carrier networks to a flight airspace allowing a plurality of mobile terminals to be flown, the plurality of mobile terminals being configured to respectively perform wireless communication with the plurality of mobile communication carrier networks, and configured to transmit information on allocation of the plurality of zones to a mobile communication network respectively managed by the plurality of mobile communication carriers.
-
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
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:US20220279075A1
公开(公告)日:2022-09-01
申请号:US17627176
申请日:2020-09-28
Applicant: NEC Corporation
Inventor: Linghang FAN , Iskren IANEV , Toshiyuki TAMURA
Abstract: A new charging solution is proposed for D2D direct communication based on 5GS, which allows the network to charge UE's usage accurately and flexibly.
-
-
-
-
-
-
-
-
-