Method and device for conditionally adding and changing cell
摘要
說明書
A terminal may transmit a measurement report to a T-SN or an S-SN (operation 10-05). The terminal may transmit a measurement report to an MN through a signaling radio bearer (SRB)1, and the MN may transfer the measurement report received from the terminal to an SN, or the terminal may directly transmit a measurement report to an SN by using an SRB3. The source SN (S-SN) may determine a conditional PSCell change (operation 10-10). The S-SN may determine to perform an sCHO (conditional PSCell change), based on the received measurement report, determine candidate cells, and determine a performing condition for each candidate cell.
According to the determination of operation 10-10, the S-SN transfers a conditional SgNB addition required message to the MN (operation 10-15). This message may include at least one of a determined sCHO indicator, an sCHO cell list, a condition for each candidate cell, and sCG-Config information including a current source configuration of the terminal. The MN may check an sCHO cell list received from the message, select T-SNs, and transmit SgNBAdditionRequest messages to selected T-SN1 and T-SN2 (operations 10-20 and 10-25). Each of the messages may include at least one of an sCHO indication, sCG-Config received from the S-SN, CG-ConfigInfo, and sCHO candidate cell ID list information. In addition, the messages may be transmitted to different T-SNs independently or parallelly. That is, operations 10-20 and 1-25 may be performed in parallel regardless of an order, and when there are priorities, an operation may be first performed for a particular T-SN according to the priorities.
