公开(公告)号：US20180359803A1

公开(公告)日：2018-12-13

申请号：US16002810

申请日：2018-06-07

Applicant: NEC Corporation

Inventor： Hayato HANEJI ,  Iskren IANEV ,  Yannick LAIR

IPC: H04W76/25 ,  H04W4/70 ,  H04W76/34

CPC classification number: H04W76/25 ,  H04W4/70 ,  H04W76/34

Abstract: A system (1) is disclosed in which a network entity determines whether a radio bearer should be maintained or released for a communications device (2). The communications device (2) establishes the radio bearer via a base station (5) of the communications system (1) and communicates data using the established radio bearer. The communications device (2) determines whether any further data is to be sent or received and/or whether a user-plane connection is required. The communications device (2) then provides information to the network entity identifying a result of said determination for use in determining whether the radio bearer should be maintained or released.

公开(公告)号：US20180184347A1

公开(公告)日：2018-06-28

申请号：US15902365

申请日：2018-02-22

Applicant: NEC CORPORATION

Inventor： Kouhei GOTOU ,  Yannick LAIR ,  Iskren IANEV

IPC: H04W36/14 ,  H04W60/00 ,  H04W48/18 ,  H04W88/06 ,  H04W60/04

CPC classification number: H04W36/14 ,  H04W48/18 ,  H04W60/00 ,  H04W60/04 ,  H04W88/06

Abstract: A wireless terminal can communicate with a first network of first type and a second network of second different type. The wireless terminal performs a packet-domain attachment to the first network and initiates a ready timer indicating that the wireless terminal is in an attached state and has recently sent data to the first network. The wireless terminal initiates an inter-system change from the first network to the second network whereby the wireless terminal becomes registered to the second network. Advantageously the wireless terminal has means for rendering the ready timer ineffective when the inter-system change is performed. The network apparatus has means for initiating its own ready timer dependent on the attachment occurring, this ready timer also indicating that the wireless terminal is in an attached state and has recently sent data to the first network.

公开(公告)号：US20250126586A1

公开(公告)日：2025-04-17

申请号：US18985662

申请日：2024-12-18

Applicant: NEC Corporation

Inventor： Iskren IANEV ,  Toshiyuki TAMURA

IPC: H04W60/00 ,  H04W8/20 ,  H04W48/02 ,  H04W76/10

Abstract: The present document proposes enablers for multiple user identities per UE. It defines user identity profiles for the users sharing the same UE and it allows for these user identity profiles to be provisioned in the UE's subscription information. The proposal enables multi user UEs to register at the same time for one or more users that are sharing the UE with optional extra user-specific authentication and authorisation. When registered, such a multi user UE can initiate per user PDU Session establishment and also can be paged for per user (one or more users) mobile terminated services.

公开(公告)号：US20240389049A1

公开(公告)日：2024-11-21

申请号：US18789022

申请日：2024-07-30

Applicant: NEC Corporation

Inventor： Iskren IANEV ,  Toshiyuki TAMURA

IPC: H04W60/00 ,  H04W8/18 ,  H04W8/20 ,  H04W60/06 ,  H04W84/04

Abstract: The present disclosure proposes combined registration for mobile terminals with multiple SIM subscription from the same PLMN. A mobile terminal with two or more SIM subscriptions from the same PLMN registers for all SIM subscriptions to the same AMF or for each SIM subscription, to different AMFs, or to different RATs via a single combined registration procedure. A combined deregistration procedure is also disclosed in which the UE can deregister for all SIM subscriptions in a single combined deregistration procedure.

公开(公告)号：US20240373481A1

公开(公告)日：2024-11-07

申请号：US18572278

申请日：2022-06-01

Applicant: NEC Corporation

Inventor： Iskren IANEV ,  Toshiyuki Tamura ,  Kundan Tiwari

IPC: H04W76/10

Abstract: [Problem]
This disclosure addresses how to define a mechanism for allocating the most suitable network slice to the UE or UE's PDU session in certain scenarios if a requested network slice from the UE is not allowed due to the Network Slice Admission Control.
Solution
A method of an Access and Mobility management Function (AMF) apparatus includes receiving, from a User Equipment (UE), first information related to a first network slice and second information related to a second network slice, and sending, to a Session Management Function (SMF) apparatus, the second information to establish a Protocol Data Unit (PDU) session on the second network slice in a case where the first network slice is overloaded.

公开(公告)号：US20240365432A1

公开(公告)日：2024-10-31

申请号：US18684243

申请日：2022-07-27

Applicant: NEC Corporation

Inventor： Toshiyuki TAMURA ,  Iskren IANEV ,  Kundan TIWARI

IPC: H04W76/30 ,  H04W76/19 ,  H04W76/20

CPC classification number: H04W76/30 ,  H04W76/19 ,  H04W76/20

Abstract: This disclosure proposes solutions for providing a resiliency of gNB-CU against possible node failures. The node failure includes unexpected system reset, system rebooting, system stall, system congestion and communication failure with neighboring nodes.
A method of a gNB Distributed Unit (gNB-DU) apparatus includes detecting failure of a gNB Centralized Unit User Plane (gNB-CU-UP) apparatus. The method includes sending a UE COTEXT RELEASE REQUEST message to a gNB Centralized Unit Control Plane (gNB-CU-CP) apparatus in a case of detecting the failure of the gNB-CU-UP apparatus. The UE COTEXT RELEASE REQUEST message includes information indicating detection of the failure of the gNB-CU-UP apparatus and information indicating that Radio Resource control (RRC) connection with a User Equipment (UE) needs to be re-established. The method includes receiving a UE CONTEXT RELEASE COMMAND message from the gNB-CU-CP apparatus. The method includes sending a RRC Release message to the UE.

公开(公告)号：US20240284377A1

公开(公告)日：2024-08-22

申请号：US18568397

申请日：2022-05-18

Applicant: NEC Corporation

Inventor： Kundan TIWARI ,  Toshiyuki TAMURA ,  Iskren IANEV

IPC: H04W60/04 ,  H04W48/18 ,  H04W84/04

CPC classification number: H04W60/04 ,  H04W48/18 ,  H04W84/042

Abstract: [Problem]
This disclosure defines a procedure to solve problem how the NSSRG needs to be handled in some situations
[Solution]
A method of a User Equipment (UE) includes performing communication with a network apparatus and including first Single Network Slice Selection Assistance Information (S-NSSAI) to Requested Network Slice Selection Assistance Information (NSSAI) for a first access. The first S-NSSAI shares Network Slice Simultaneous Registration Group (NSSRG) common to second S-NSSAI of Allowed NSSAI for a second access.

公开(公告)号：US20220322221A1

公开(公告)日：2022-10-06

申请号：US17628730

申请日：2021-03-18

Applicant: NEC Corporation

Inventor： Iskren IANEV ,  Toshiyuki TAMURA

IPC: H04W48/18 ,  H04W76/15 ,  H04W36/08

Abstract: An AMF apparatus (3) receives a NAS message for requesting a core network to establish or activate a PDU session associated with an allowed network slice identifier, from a UE (4), via a first cell (10) not supporting the allowed network slice identifier and via a first AN node (1) that provides the first cell (10). In response to receiving the NAS message, the AMF apparatus (3) sends to the first AN node (1) a control message that causes the first AN node (1) to move the UE (4) to a second cell (20) that supports the allowed network slice identifier. This can contribute, for example, to enabling an establishment or activation of a PDU session associated with a network slice that is supported only in sparsely (or patchily) placed local cells.

公开(公告)号：US20220240161A1

公开(公告)日：2022-07-28

申请号：US17721821

申请日：2022-04-15

Applicant: NEC Corporation

Inventor： Iskren IANEV ,  Toshiyuki TAMURA

IPC: H04W48/12 ,  H04W76/27 ,  H04W8/20 ,  H04W8/24 ,  H04W48/02 ,  H04W74/08

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：US20220070963A1

公开(公告)日：2022-03-03

申请号：US17414764

申请日：2019-12-13

Applicant: NEC Corporation

Inventor： Iskren IANEV ,  Toshiyuki TAMURA ,  Linghang FAN

IPC: H04W76/28 ,  H04L12/24

Abstract: The current disclosure proposes per UE customization of the UE DRX/eDRX and PSM based on the analytical results from NWDAF. It also proposes a new UE policy element for UE analytics reporting—UE Analytics Reporting Policy that is a set of reporting rules and is defined by the PCF based on analytical results from NWDAF. The UEARP then is delivered or updated in the UE during registration.