| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for changing connection in a dual connectivity scenario.SOLUTION: A method sets, by a UE 103, a first MCG bearer to communicate with a first base station and a first MCG bearer to communicate with a second base station. The method generates and transmits a first encrypted PDCP SDU by encrypting a first PDCP SDU using a first security key, a first TX_HFN, and a first PDCP SN related to a first PDCP SDU of the first MCG bearer, and thereby generates and transmits a second encrypted PDCP SDU. The method receives a third bearer configuration to reconfigure a SCG bearer so that it will be a second MCG or split bearer, reconfigures the SCG bearer to the second MCG or split bearer, then encrypts a third PDCP SDU of the SCG bearer, and thereby generates and transmits the third encrypted PDCP SDU. |
