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US 12,563,392 B2Granted
Apparatus and method
AssigneeNEC Corporation
InventorsSander De Kievit, Anand Raghawa Prasad, Sheeba Backia Mary Baskaran
Life of this patent
Estimating the term…
Abstract
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.
Claims21
A method of a user equipment (UE) comprising:
- receiving one or more updated parameters for the UE from a core network apparatus;
- verifying a first Message Authentication Code for Integrity (MAC-I) relevant to the one or more updated parameters, wherein the first MAC-I is generated using a Key Derivation Function (KDF) and a first input;
- generating a second MAC-I, different from the first MAC-I, using a KDF and a second input in a case where the first MAC-I is verified successfully, wherein the second input is different from the first input;
- and
- transmitting a message including the second MAC-I to the core network apparatus.
2 more elements
A method of a user equipment (UE) comprising:
- receiving, from a core network apparatus, a Downlink (DL) Non-Access Stratum (NAS) transport message comprising one or more updated parameters;
- verifying a first Message Authentication Code for Integrity (MAC-I) generated using a Key Derivation Function (KDF) and a first input;
- calculating a second MAC-I using a KDF and a second input different from the first input in a case where the first MAC-I is verified successfully;
- and
- transmitting, to the core network apparatus, an Uplink (UL) NAS transport message comprising the second MAC-I.
2 more elements
A user equipment (UE) comprising:
- a memory storing one or more instructions;
- and
- a processor configured to execute the one or more instructions to:
- receive one or more updated parameters for the UE from a core network apparatus;
- verify a first Message Authentication Code for Integrity (MAC-I) relevant to the one or more updated parameters, wherein the first MAC-I is generated using a Key Derivation Function (KDF) and a first input;
- generate a second MAC-I, different from the first MAC-I, using a KDF and a second input in a case where the first MAC-I is verified successfully, wherein the second input is different from the first input;
- and
- transmit a message including the second MAC-I to the core network apparatus.
5 more elements
A user equipment (UE) comprising:
- a memory storing one or more instructions;
- and
- a processor configured to execute the one or more instructions to:
- receive, from a core network apparatus, a Downlink (DL) Non-Access Stratum (NAS) transport message comprising one or more updated parameters;
- verify a first Message Authentication Code for Integrity (MAC-I) generated using a Key Derivation Function (KDF) and a first input;
- calculate a second MAC-I using a KDF and a second input different form the first input in a case where the first MAC-I is verified successfully;
- and
- transmit, to the core network apparatus, an Uplink (UL) NAS transport message comprising the second MAC-I.
5 more elements
Dependencies are inferred from the claim text.