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1.发明公开公开(公告)号：US20240196205A1
公开(公告)日：2024-06-13
申请号：US18411225
申请日：2024-01-12
Applicant: NEC Corporation
Inventor： Sheeba Backia Mary BASKARAN , Sander DE KIEVIT , Sivabalan ARUMUGAM , Anand Raghawa PRASAD
Abstract: The present disclosure provides a User Equipment (UE) comprising a transceiver circuit; and a controller configured to control the transceiver circuit to send, to an Access and mobility Management Function (AMF) of a communication node, an identifier, wherein upon successful authentication of a network access function of the UE in the communication node, the controller is configured to maintain a secure connection with the communication node.
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公开(公告)号：US20210204133A1
公开(公告)日：2021-07-01
申请号：US17201280
申请日：2021-03-15
Applicant: NEC Corporation
Inventor： Hironori ITO , Anand Raghawa PRASAD , Andreas KUNZ , Sivabalan ARUMUGAM , Sivakamy LAKSHMINARAYANAN , Sheeba Backia Mary BASKARAN
IPC: H04W12/106 , H04W12/037 , H04W12/041 , H04W12/08 , H04W36/14 , H04W48/18
Abstract: A communication terminal (10) according to the present disclosure includes: a control unit (12) configured to, in a case of a movement from a communication area formed by the 5GS to a communication area formed by the EPS or a movement from a communication area formed by the EPS to a communication area formed by the 5GS, determine whether or not a communication system forming a communication area at a movement destination can satisfy requirements of services; and a communication unit (11) configured to, when it is determined that the communication system forming the communication area at the movement destination can satisfy the requirements of the services, send a connection request message to the communication system forming the communication area at the movement destination.
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公开(公告)号：US20210051468A1
公开(公告)日：2021-02-18
申请号：US16968624
申请日：2019-02-15
Applicant: NEC Corporation
Inventor： Sheeba Backia Mary BASKARAN , Anand Raghawa PRASAD , Sivakamy LAKSHMINARAYANAN , Sivabalan ARUMUGAM , Hironori ITO , Takihito YOSHIZAWA
Abstract: Methods for (i) finding/discovering the right UDM instances and (ii) ensuring the UDM instance security are provided. The method for (i), includes the steps of: (i-1) pre-provisioning of UDM instance discovery information/parameters to the UE/USIM, (i-2) sending the UDM instance discovery related parameters to a core network element, and (i-3) discovering the right UDM instance at the core network element based on the discovery parameters and related routing information either at the UDM consumer/NRF. The method for (ii) includes the steps of: (ii-1) Secured choice of parameter for UDM instance discovery (e.g. UDM instance identifier) to the core network element and (ii-2) the secured UDM instance identifier generation and management at the UDM to prevent attack on UDM instances. Also a method to identify the cleartext IMSI/SUPI is provided for the re-authentication scenario along with the relevant procedures.
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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.
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公开(公告)号：US20200229120A1
公开(公告)日：2020-07-16
申请号：US16833273
申请日：2020-03-27
Applicant: NEC Corporation
Inventor： Kundan TIWARI , Toshiyuki TAMURA , Sheeba Backia Mary BASKARAN
Abstract: The present disclosure is related to sending of a one time identifier of a UE during the NAS procedure. Specifically, the present disclosure relates to determining whether to use same one time identifier or different one time identifier during registration retry procedure.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20190274072A1
公开(公告)日：2019-09-05
申请号：US16344980
申请日：2017-10-26
Applicant: NEC Corporation
Inventor： Anand Raghawa PRASAD , Sivakamy LAKSHMINARAYANAN , Sivabalan ARUMUGAM , Sheeba Backia Mary BASKARAN , Hironori ITO , Andreas KUNZ
Abstract: To provide a communication system capable of conducting necessary security procedures when handover is made in NextGen System, a communication system according to the present invention includes a base station (10) configured to form a communication area where a communication terminal (20) is located, and a base station (12) configured to form a communication area to which the communication terminal (20) makes handover, wherein the base station (10) receives a first message containing UE Security Capabilities and related to the handover from the communication terminal (20), and the base station (12) receives a second message containing the UE Security Capabilities, performs handover check of the communication terminal (20) based on the UE Security Capabilities, and sends a third message corresponding to the second message based on a result of the handover check.
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公开(公告)号：US20190254097A1
公开(公告)日：2019-08-15
申请号：US16345458
申请日：2017-10-26
Applicant: NEC Corporation
Inventor： Anand Raghawa PRASAD , Hironori ITO , Sivakamy LAKSHMINARAYANAN , Sivabalan ARUMUGAM , Sheeba Backia Mary BASKARAN , Andreas KUNZ
CPC classification number: H04W76/15 , H04W8/22 , H04W8/24 , H04W12/04 , H04W12/08 , H04W16/32 , H04W36/14 , H04W72/04 , H04W84/042 , H04W88/06 , H04W92/20
Abstract: To provide a communication system capable of providing a high level of security when implementing dual connectivity using different communication technologies, a communication system according to the present invention is a communication system including a base station (20) that communicates with a communication terminal (30) by using a second communication, the communication terminal (30) having information about terminal capability to access the base station (20), and a base station (10) that communicates with the communication terminal (30) by using a first communication technology and includes a receiving unit configured to receive the information about the terminal capability and information about access right to the base station (20) granted to the communication terminal (30), and a sending unit configured to send, to the base station (20), a message requesting connection to the communication terminal (30) based on the information about the terminal capability and the information about the access right.
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8.发明公开公开(公告)号：US20240244425A1
公开(公告)日：2024-07-18
申请号：US18435148
申请日：2024-02-07
Applicant: NEC Corporation
Inventor： Hironori ITO , Sivakamy LAKSHMINARAYANAN , Anand Raghawa PRASAD , Sivabalan ARUMUGAM , Sheeba Backia Mary BASKARAN
IPC: H04W12/041 , H04L9/40 , H04W12/06
CPC classification number: H04W12/041 , H04L63/18 , H04W12/06
Abstract: A communication terminal capable of preventing a reduction in security level that is caused at the time of establishing multiple connections via 3GPP Access and Non-3GPP Access. A communication terminal according to the present disclosure includes: a communication unit configured to communicate with gateway devices disposed in a preceding stage of a core network device via an Untrusted Non-3GPP Access; and a key derivation unit configured to derive a second security key used for security processing of a message transmitted using a defined protocol with the gateway device, from a first security key used for security processing of a message transmitted using a defined protocol with the core network device.
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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.
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10.发明申请公开(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
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.
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