公开(公告)号：US20220174480A1

公开(公告)日：2022-06-02

申请号：US17672274

申请日：2022-02-15

Applicant: NEC Corporation

Inventor： Sheeba Backia Mary BASKARAN ,  Sivakamy LAKS HMI NARAYANAN ,  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：US20210385090A1

公开(公告)日：2021-12-09

申请号：US17285991

申请日：2019-11-01

Applicant: NEC Corporation

Inventor： Anand Raghawa PRASAD ,  Sander DE KIEVIT ,  Hironori ITO ,  Takahito YOSHIZAWA

IPC: H04L9/32 ,  H04L29/06 ,  H04L29/08 ,  H04W12/106

Abstract: This invention introduces methods and mechanisms of partial integrity protection in mobile systems. A device comprising: a memory configured to store instructions; and a processor configured to execute the instructions to: generate a representation value based on protocol data unit (PDU) header data and payload data of a PDU; generate a message authentication code based on the representation value; and include the message authentication code in the PDU.

公开(公告)号：US20210360471A1

公开(公告)日：2021-11-18

申请号：US17284893

申请日：2019-11-01

Applicant: NEC CORPORATION

Inventor： Sander DE KIEVIT ,  Hironori ITO ,  Anand Raghawa PRASAD ,  Takahito YOSHIZAWA

IPC: H04W28/04 ,  H04L1/20 ,  H04W8/24 ,  H04W12/10

Abstract: This invention introduces methods and mechanisms of partial integrity protection in mobile systems. A user equipment (UE), comprising: a memory configured to store instructions; and a processor configured to execute the instructions to: receive, from a network device, user plane data having integrity protection; send an error indication indicating an integrity protection error relating to the user plane data; and receive retransmitted user plane data from the network device with a reduced data rate, based on the error indication.

公开(公告)号：US20220286820A1

公开(公告)日：2022-09-08

申请号：US17629595

申请日：2020-08-13

Applicant: NEC Corporation

Inventor： Takahito YOSHIZAWA ,  Nivedya Parambath SASI ,  Rohini RAJENDRAN

IPC: H04W4/12 ,  H04W4/40 ,  H04W12/02

Abstract: A communication system, a UE (User Equipment), a communication method and a computer readable medium may be provided. The communication system (100) includes: a first UE (User Equipment) (110) including a first controller and a first transceiver, wherein the first controller is configured to control the transceiver to send a message including L2 ID (Layer 2 Identity) and verification information; and a second UE (120) including a second controller and a second transceiver, wherein the second controller is configured: to control the transceiver to receive the message from the first UE (110); and to determine whether to accept the L2 ID or not using the verification information.

公开(公告)号：US20220191696A1

公开(公告)日：2022-06-16

申请号：US17605038

申请日：2019-04-30

Applicant: NEC Corporation

Inventor： Takahito YOSHIZAWA ,  Shubhranshu SINGH ,  Sander DE KIEVIT

IPC: H04W12/069 ,  H04W12/72 ,  H04L9/32

Abstract: Provided is a user equipment (UE) including a first Subscriber Identity Module (SIM) and a second SIM, the UE is configured to receive, from a network node, a first token derived from a seed token using a first cryptographic key associated with the first SIM; derive a first third order token by encrypting the received first token using a second cryptographic key associated with the second SIM; and send the third order token to the network node.

公开(公告)号：US20210051482A1

公开(公告)日：2021-02-18

申请号：US16969363

申请日：2019-02-06

Applicant: NEC Corporation

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

IPC: H04W12/10

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：US20200344601A1

公开(公告)日：2020-10-29

申请号：US16961548

申请日：2019-01-09

Applicant: NEC CORPORATION

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

IPC: H04W12/02 ,  H04W12/00 ,  H04W12/06 ,  H04W12/04 ,  H04W12/10

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：US20250133526A1

公开(公告)日：2025-04-24

申请号：US19000805

申请日：2024-12-24

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：US20230328527A1

公开(公告)日：2023-10-12

申请号：US18208759

申请日：2023-06-12

Applicant: NEC Corporation

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

IPC: H04W12/106

CPC classification number: 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：US20220225093A1

公开(公告)日：2022-07-14

申请号：US17617458

申请日：2020-05-26

Applicant: NEC Corporation

Inventor： Nivedya Parambath SASI ,  Rohini RAJENDRAN ,  Takahito YOSHIZAWA ,  Toshiyuki TAMURA

IPC: H04W12/06 ,  H04W12/72

Abstract: This disclosure related to the aspects of 5G system that supports Public Land Mobile Network and Non-Pubic Network especially in the context of how the UE (110) can handle multiple subscriptions when connecting to a Non-Public Network.