Method and apparatus for triggering reselection for relay

A first device configured to perform wireless communication, the first device comprising:

• one or more memories storing instructions;
• one or more transceivers;
• and
• one or more processors connected to the one or more memories and the one or more transceivers, wherein the one or more processors execute the instructions to:
• establish a radio resource control (RRC) connection with a first base station;
• establish a PC5 connection with a second device;
• receive an RRC reconfiguration message for handover from the first base station;
• establish an RRC connection with a second base station based on the RRC reconfiguration message;
• and
• based on (i) the first device which is a relay device relaying communication between the second device and the first base station, and (ii) the first device establishing the RRC connection with the second base station, transmit information regarding relay reselection to the second device.

An apparatus configured to control a first user equipment (UE), the apparatus comprising:

• one or more processors;
• and
• one or more memories operably connected to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to:
• establish a radio resource control (RRC) connection with a first base station;
• establish a PC5 connection with a second UE;
• receive an RRC reconfiguration message for handover from the first base station;
• establish an RRC connection with a second base station based on the RRC reconfiguration message;
• and
• based on (i) the first UE which is a relay UE relaying communication between the second UE and the first base station, and (ii) the first UE establishing the RRC connection with the second base station, transmit information regarding relay reselection to the second UE.