Method and apparatus for establishing unicast connection based on sidelink

A method for establishing a unicast connection based on sidelink, the method being performed by a second terminal and comprising:

• receiving an access control parameter broadcasted by a first terminal;
• determining, according to the access control parameter, whether the second terminal is a target terminal allowed to establish the unicast connection with the first terminal;
• and
• transmitting a connection establishment request message to the first terminal in response to the second terminal being the target terminal, to allow the first terminal to establish the unicast connection with the second terminal based on the connection establishment request message,
• wherein the access control parameter comprises at least one of:
• a maximum distance value between the target terminal and the first terminal;
• a target area identification of a target area where the target terminal is located;
• or
• a target access probability parameter corresponding to at least one of a target identification parameter and the target area identification;
• wherein the target identification parameter comprises at least one of a target service type identification parameter configured to identify a current service type of the target terminal and a target terminal type identification parameter configured to identify a target terminal type, and the target access probability parameter is configured to identify a success rate of successfully establishing the unicast connection between the target terminal and the first terminal.

A second terminal, comprising:

• a processor;
• and
• a memory configured to store instructions executable by the processor;
• wherein the processor is configured to:
• receive an access control parameter broadcasted by a first terminal;
• determine, according to the access control parameter, whether the second terminal is a target terminal allowed to establish a unicast connection with the first terminal;
• and
• transmit a connection establishment request message to the first terminal in response to the second terminal being the target terminal, to allow the first terminal to establish the unicast connection with the second terminal based on the connection establishment request message,
• wherein the access control parameter comprises at least one of:
• a maximum distance value between the target terminal and the first terminal;
• a target area identification of a target area where the target terminal is located;
• or
• a target access probability parameter corresponding to at least one of a target identification parameter and the target area identification;
• wherein the target identification parameter comprises at least one of a target service type identification parameter configured to identify a current service type of the target terminal and a target terminal type identification parameter configured to identify a target terminal type, and the target access probability parameter is configured to identify a success rate of successfully establishing the unicast connection between the target terminal and the first terminal.