Method for establishing connected state, terminal, core network function, and access network device

A first terminal, comprising a processor, a memory, and a program or an instruction stored in the memory and executable in the processor, wherein the program or instruction is executed by the processor to perform:

• receiving first information sent by a second terminal, wherein the first information comprises a second identifier, or the first information comprises the second identifier and network access information;
• and
• sending first indication information to a first core network function, wherein the first indication information comprises the second identifier, and a first identifier, wherein
• the second identifier is used for indicating, to the first core network function, that the second terminal enters a connected state, and the first identifier is used for indicating, to the first core network function, that the first terminal enters a connected state.