Method and device for conditionally adding and changing cell
摘要
說明書
That is, the SN modification request message or SN addition request message may include at least one of information included in the failure report, or RRC messages based on the MN RAT. Accordingly, a network may avoid a target cell that has failed once and select another alternative cell or alternative SN.
When the change is successful, the terminal transmits an RRC reconfiguration complete message based on the SN RAT to the target cell.
Furthermore, according to an embodiment of the disclosure, the terminal may add, to the report, information relating to whether the failure is failure in an inter-MN CPSC or intra-SN CPSC with respect to the terminal, and transmit same to the network. In a case of a PSCell change in which the MN is involved, the terminal may receive CPSC configuration information through a signal of the MN. The signal indicates signaling to an SRB terminated in the MN.
For example, SRB0, 1, and 2 and split SRB 0, 1, and 2 may be possible. Alternatively, when the MN is not involved, the terminal may transmit or receive a signal (or information) related to the CPSC by using signaling (e.g., SN terminated SRBs like SRB3s) of the SN rather than signaling of the MN in the above embodiment.
