Communication method and apparatus

A communication apparatus, comprising:

• a processor;
• and
• a memory coupled to the processor, the memory having stored thereon processor-executable instructions that, when executed by the processor, cause the processor to:
• receive a first message, wherein the first message comprises first parameter information used to update a number of terminal devices or sessions in a first network slice;
• verify validity of the first parameter information;
• and
• based on the first parameter information being valid, update the number of terminal devices or sessions in the first network slice,
• wherein the first parameter information comprises at least one of:
• a terminal device identifier, an identifier of the first network slice, an access management network function identifier, first indication information for requesting registration or deregistration, second indication information for requesting session establishment or release, a terminal device access type, a session identifier, a data network identifier, a session management network function identifier, or a session status.

A communication apparatus, comprising:

• a processor;
• and
• a memory coupled to the processor, the memory having stored thereon processor-executable instructions that, when executed by the processor, cause the processor to:
• receive a second message, the second message being used to request verification of first parameter information, the first parameter information being used to update a number of terminal devices or sessions in a first network slice;
• verify the first parameter information based on obtained second parameter information about a terminal device or a session, and
• send a third message to an admission control network function, the third message comprising a verification result of the first parameter information, the verification result comprising an indication that the first parameter information is valid or false.