Communication apparatus, first communication apparatus, method of communication apparatus, and method of first communication apparatus

A method of a first communication apparatus comprising:

• communicating with a second communication apparatus;
• and
• sending a message,
• wherein the message includes information related to an access type, and
• wherein a Non Access Stratum (NAS) security context corresponding to the information related to the access type is used for performing an integrity check related to a registration request message.

A method of a user equipment comprising:

• communicating with a communication apparatus;
• and
• sending a registration request message,
• wherein an integrity check related to the registration request message is performed using a Non Access Stratum (NAS) security context, and
• wherein the NAS security context corresponds to an access type.

A communication apparatus comprising:

• at least one memory;
• and
• at least one hardware processor coupled to the at least one memory,
• wherein the at least one hardware processor is configured to:
• receive a message,
• wherein the message includes information related to an access type;
• and
• use a Non Access Stratum (NAS) security context to perform an integrity check related to a registration request message,
• wherein the NAS security context corresponds to the information related to the access type.

A method of a first communication apparatus comprising:

• at least one memory;
• and
• at least one hardware processor coupled to the at least one memory,
• wherein the at least one hardware processor is configured to:
• communicate with a second communication apparatus;
• and
• send a message,
• wherein the message includes information related to an access type, and
• wherein a Non Access Stratum (NAS) security context corresponding to the information related to the access type is used for performing an integrity check related to a registration request message.

A user equipment comprising:

• at least one memory;
• and
• at least one hardware processor coupled to the at least one memory,
• wherein the at least one hardware processor is configured to:
• communicate with a communication apparatus;
• and
• send a registration request message,
• wherein an integrity check related to the registration request message is performed using a Non Access Stratum (NAS) security context, and
• wherein the NAS security context corresponds to an access type.