Method and device for conditionally adding and changing cell
摘要
說明書
A terminal is in dual connection with a master node (MN) and a secondary node (SN). The terminal may inform at least one of the MN and the SN that a conditional PSCell change is possible. That is, the terminal may provide at least one of the MN and the SN with information on capability, which indicates that the terminal supports a conditional PSCell change. The information on capability, which indicates that the terminal supports a conditional PSCell change, may include performance information related a conditional handover (CHO), and performance information related to a conditional PSCell change (CPSC). When it is identified that the terminal supports a PSCell change, the SN may transfer measurement configuration information (Meas Configuration) (operation 17-05).
When the terminal having received measurement information performs measurement reporting (MR) for the SN (operation 17-10), the SN determines to a conditional PSCell change, and selects, as a target, another cell in an SN secondary gNB (SgNB) previously received from the terminal (operation 17-15). In a case where the MN is not involved, when measurement information used as configuration information and a condition for a target or a target candidate cell is transferred to the terminal (operation 17-20), measurement information used as configuration information and a condition for the corresponding cell may be included and transferred in an RRC reconfiguration message based on a radio access technology (RAT) of the SN, and the RRC reconfiguration message may be transferred through a signaling radio bearer (SRB3).
