Nec Corporation

Lenovo Innovations Limited (hong Kong)

Nec C Orporation

Anand Raghawa Prasad

Xiaowei Zhang

Hironori Ito

Sivabalan Arumugam

Andreas Kunz

Sheeba Backia Mary Baskaran

Toshiyuki Tamura

Sivakamy Lakshminarayanan

Naoaki Suzuki

Genadi Velev

Sander De Kievit

Takahito Yoshizawa

Stefan Schmid

Thilo Ewald

Hisashi Futaki

Caroline Jactat

Pradheepkumar Singaravelu

Sadafuku Hayashi

Nivedya Parambath Sasi

Rohini Rajendran

Vincent Roger

Filipe Leitao

Antoine Vallee

Takihito Yoshizawa

Pradheep Kumar Singaravelu

An object is to provide a core network device being able to efficiently perform secondary authentication to be performed for each network slice. A core network device () according to the present disclosure includes an authentication unit () configured to perform, during registration processing of registering a communication terminal in a core network, first authentication processing of determining whether the communication terminal is a communication terminal permitted to be registered in the core network, a communication unit () configured to receive permission list information indicating at least one network slice usable by the communication terminal in a serving network, and an authentication unit () configured to perform, during registration processing of registering the communication terminal in the core network, second authentication processing of determining whether the communication terminal is a communication terminal permitted to use a network slice included in the permission list information.

Core network device, communication terminal, communication system, authentication method, and communication method

A communication terminal () according to the present disclosure includes: a control unit () 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 () 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.

Communication terminal, network device, communication method, and non-transitory computer readable medium

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.

Method for establishing a secure connection between a UE and a network, a user equipment and a communication system

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.

Source base station, UE, method in wireless communication system

It is an object to provide a core network device that can satisfy security requirements required for respective network slices. A core network device () according to the present disclosure includes a storage unit () configured to store a security parameter associated with a network slice allowing a communication terminal. The core network device () further includes a communication unit () configured to transmit identification information on the network slice, and identification information on the security parameter to the communication terminal.

Core network device, access network device, communication terminal, communication system, and communication method

The present disclosure relates to method of enabling key re-usage for an electronic device. The method comprising: receiving a request message from the electronic device, wherein the request message comprises a first information being indicative of a preference for one of a first key associated with a first network node in a first network or a second key associated with a second network node in a second network; processing the request message to determine the preference indicated in the first information; and transmitting a response message to the electronic device for reusing the first key or second key, the electronic device is configured to derive a third key based on the first key or the second key as indicated in the determined preference, and the second network is able to access to the first key and the second key whereas the first network cannot access the second key.

Method and a device for enabling key re-usage in a communication network

A UE () provides information on potential S'eNB(s). The information is forwarded from an MeNB (_) to an M′eNB (_) such that the M′eNB (_) can determine, before the handover happens, whether the M′eNB (_) will configure a new SeNB (S′eNB) and which S′eNB the M′eNB (_) will configure. In one of options, the MeNB (_) derives a key S′-KeNB for communication protection between the UE () and the S′eNB (_), and send the S′-KeNB to the M′eNB (_). In another option, the M′eNB (_) derives the S′-KeNB from a key KeNB* received from the MeNB (_). The M′eNB (_) sends the S′-KeNB to the S′eNB (_). Moreover, there are also provided several variations to perform SeNB Release, SeNB Addition, Bearer Modification and the like, in which the order and/or timing thereof can be different during the handover procedure.

Apparatus, system and method for dc (dual connectivity)

An object is to provide a key generation method capable of maintaining a high security level in each of sliced networks when network slicing is applied to a core network. A key generation method according to this disclosure specifies network slice identification information indicating a network slice system that provides a service to be used by a communication terminal () among a plurality of network slice systems included in a core network () and, using the network slice identification information, generates a service key to be used for security processing in the network slice system indicated by the network slice identification information.

Key derivation method, communication system, communication terminal, and communication device

An apparatus is provided. The apparatus includes a memory storing one or more instructions and a processor. The processor execute the one or more instructions to: receive update information from an external apparatus, the update information corresponding to a network communication; obtain a Subscription Concealed Identifier (SUCI) based on the update information; and transmit the SUCI to the external apparatus.

Apparatus and method

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).

Authentication method for next generation systems

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.

Method, UE, and network for providing KDF negotiation

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.

Communication terminal, core network device, core network node, network node, and key deriving method

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.

Growing community of inventors

Tokyo, Japan

Anand Raghawa Prasad