Communication method and related device

A communication method, comprising:

• after primary authentication between a core network and a user equipment succeeds, performing, by the user equipment, secondary authentication with a data network with the assistance of the core network when the secondary authentication further needs to be performed between the user equipment and the data network;
• receiving, by the user equipment from the core network, an authentication result of the secondary authentication and a restriction condition of the secondary authentication;
• and
• storing, by the user equipment, the received authentication result of the secondary authentication and the received restriction condition of the secondary authentication.

A communication apparatus in a core network, comprising:

• a memory configured to store instructions;
• a processor coupled to the memory;
• and
• a receiver coupled to the processor, wherein the instructions cause the processor to be configured to:
• after primary authentication between the core network and a user equipment succeeds, assist a data network in performing secondary authentication between the data network and the user equipment when the secondary authentication further needs to be performed between the data network and the user equipment;
• obtain an authentication result of the secondary authentication and a restriction condition of the secondary authentication from the data network;
• and
• store the obtained authentication result of the secondary authentication and the obtained restriction condition of the secondary authentication into the core network.

A communication apparatus in a core network, comprising:

• a memory configured to store instructions;
• a processor coupled to the memory;
• and
• a receiver coupled to the processor, wherein the instructions, when executed by the processor, cause the apparatus to:
• after primary authentication between a core network and the communication apparatus succeeds, perform secondary authentication with a data network with the assistance of the core network when the secondary authentication further needs to be performed between the user equipment and the data network;
• receive an authentication result of the secondary authentication and a restriction condition of the secondary authentication from the core network;
• and
• store the authentication result of the secondary authentication and the restriction condition of the secondary authentication.