Methods performed by network node and node, and node device

A method performed by a central unit (CU) of a base station, the method comprising:

• transmitting, to a candidate distributed unit (DU), a first request message associated with at least one candidate cell for a layer 1/layer 2 (L1/L2) triggered mobility (LTM);
• receiving, from the candidate DU, a second response message including first information associated with an accepted candidate cell;
• transmitting, to a source DU, a third request message including second information associated with the accepted candidate cell;
• and
• transmitting, to the source DU, a radio resource control (RRC) reconfiguration message including LTM configuration information, the RRC reconfiguration message is forwarded to a terminal.

A central unit (CU) of a base station, the CU comprising:

• a transceiver configured to transmit and receive a signal;
• and
• at least one processor, coupled to the transceiver and configured to:
• transmit, to a candidate distributed unit (DU) via the transceiver, a first request message associated with at least one candidate cell for a layer 1/layer 2 (L1/L2) triggered mobility (LTM),
• receive, from the candidate DU via the transceiver, a second response message including first information associated with an accepted candidate cell,
• transmit, to a source DU via the transceiver, a third request message including second information associated with the accepted candidate cell, and
• transmit, to the source DU via the transceiver, a radio resource control (RRC) reconfiguration message including LTM configuration information, the RRC reconfiguration message is forwarded to a terminal.