公开(公告)号：US20220159607A1

公开(公告)日：2022-05-19

申请号：US17607108

申请日：2020-05-01

Applicant: NEC Corporation

Inventor： Shubhranshu SINGH ,  Takahito YOSHIZAWA

IPC: H04W60/00 ,  H04W8/20 ,  H04W8/22 ,  H04W48/18

Abstract: Many commercially deployed devices support more than one SIM cards. Support for multi-USIM is currently handled in an implementation-specific manner without any support from 3GPP specifications. With the increased complexity of 5G-capable UEs and with growing demand for multi-USIM devices in the market, it becomes important to consider system enhancements that would allow for more efficient solution involving required support to UE from 5G core and 5G-RAN.

公开(公告)号：US20220060901A1

公开(公告)日：2022-02-24

申请号：US17421240

申请日：2019-12-10

Applicant: NEC Corporation

Inventor： Rohini Rajendran ,  Pradheep Kumar SINGARAVELU ,  Nivedya Parambath SASI ,  Takahito YOSHIZAWA ,  Sivabalan ARUMUGAM ,  Anand Raghawa PRASAD

IPC: H04W12/122 ,  H04W24/10

Abstract: Accordingly, embodiments herein disclose a method and base station for preventing a User Equipment (UE) from attaching to a false base station. The method includes: generating, by a source base station, a UE specific Anonymity Challenge Parameter to the UE based on sensitive information from the UE, cell information, source base station information and initial Anonymity Challenge Parameter assigned to the particular base station; and sending, by the source base station, a measurement command message including the UE specific Anonymity Challenge Parameter to the UE. Further, the method includes receiving, by the source base station, an Anonymity Challenge Parameter acknowledgement as a response from the UE; and negotiating, by the source base station, the UE specific Anonymity Challenge Parameter with the UE to prevent the UE from attaching to the false base station.

公开(公告)号：US20230076879A1

公开(公告)日：2023-03-09

申请号：US17985256

申请日：2022-11-11

Applicant: NEC CORPORATION

Inventor： Sheeba Backia Mary BASKARAN ,  Sivakamy LAKSHMINARAYANAN ,  Anand Raghawa PRASAD ,  Sivabalan ARUMUGAM ,  Hironori ITO ,  Takahito YOSHIZAWA

IPC: H04W12/02 ,  H04W12/06 ,  H04W12/10 ,  H04W12/03 ,  H04W12/72 ,  H04W12/0471

Abstract: A communication terminal (10) includes control means for generating a subscription concealed identifier (SUCI) including a subscription permanent identifier (SUPI) concealed using a predetermined protection scheme, and a protection scheme identifier identifying the protection scheme, and transmission means for sending the SUCI to a first network apparatus during a registration procedure, the SUCI being sent for a second network apparatus to de-conceal the SUPI from the SUCI based on the protection scheme used to generate the SUCI.

公开(公告)号：US20220095113A1

公开(公告)日：2022-03-24

申请号：US17540455

申请日：2021-12-02

Applicant: NEC Corporation

Inventor： Hironori ITO ,  Anand Raghawa PRASAD ,  Sivabalan ARUMUGAM ,  Takahito YOSHIZAWA ,  Sivakamy LAKSHMINARAYANAN ,  Sheeba Backia Mary BASKARAN

IPC: H04W12/106

Abstract: A method for integrity protection scheme by a mobile communication device or a core network entity according to a first exemplary aspect of the present disclosure includes configuring settings and parameters for integrity protection for user data with another party; receiving user plane data from the other party, calculating Message Authentication Code for Integrity (MAC-I) for a part of the data and checking integrity of the part of the data.

公开(公告)号：US20210409939A1

公开(公告)日：2021-12-30

申请号：US17288968

申请日：2019-10-30

Applicant: NEC Corporation

Inventor： Sheeba Backia Mary BASKARAN ,  Sivabalan ARUMUGAM ,  Anand Raghawa PRASAD ,  Sander DE KIEVIT ,  Takahito YOSHIZAWA ,  Hironori ITO

IPC: H04W12/041 ,  H04W12/0431 ,  H04W12/06 ,  H04W60/04

Abstract: A method for providing a key derivation function (KDF) negotiation in a 5G network is provided. The method which includes: selecting a specific KDF at a UE and at the network for at least one security related key derivation; and transmitting, said selected KDF to the UE and to other network functions to indicate said selected KDF for generating specific security key at a receiver side.

公开(公告)号：US20210144550A1

公开(公告)日：2021-05-13

申请号：US17044383

申请日：2019-04-03

Applicant: NEC CORPORATION

Inventor： Hironori ITO ,  Anand Raghawa PRASAD ,  Takahito YOSHIZAWA ,  Sheeba Backia Mary BASKARAN ,  Sivabalan ARUMUGAM ,  Sivakamy LAKSHMINARAYANAN

IPC: H04W12/06 ,  H04W12/069 ,  H04W84/18 ,  H04W28/02

Abstract: The present document proposes security procedures for 3GPP Common API Framework (CAPIF) to solve various security issues that can occur during various phases such as, (i) API invoker Onboarding, (ii) API invoker Offboarding, (iii) Service API publishing, (iv) Service API unpublishing, (v) Update service APIs, (vi) Service API discovery, (vii) API invoker obtaining authorization from CAPIF core function (CCF) to access service API, (viii) Authentication between API invoker and API exposing function (AEF) upon the service invocation, (ix) Retrieve service APIs, (x) CAPIF event subscription, (xi) CAPIF event unsubscription, and (xii) API invoker authorization to access service APIs.

公开(公告)号：US20210144135A1

公开(公告)日：2021-05-13

申请号：US17044065

申请日：2019-04-02

Applicant: NEC CORPORATION

Inventor： Anand Raghawa PRASAD ,  Sivakamy LAKSHMINARAYANAN ,  Sheeba Backia Mary BASKARAN ,  Sivabalan ARUMUGAM ,  Hironori ITO ,  Takahito YOSHIZAWA

IPC: H04L29/06 ,  H04W12/06 ,  H04W12/69 ,  H04L9/30

Abstract: The present disclosure relates to authentication methods supported by the User Equipment (UE) to the core network and authentication method (selected by the core network) to the UE. These can be used for negotiating any primary or secondary (or any) authentication method and are applicable when multiple authentication methods are supported at the UE and the network (authentication server). Further, the present disclosure also offers security solution to prevent modification or tampering of the parameters in the mechanisms in order to prevent attacks such as bidding-down, Denial of Service (DoS) and Man-In-The-Middle (MITM).