摘要 |
A network node includes a communication interfacing unit and a processor. The processor operable to perform operations includes controlling the communication interfacing unit to establish at least one second RB with a secondary cell group (SCG) bearer type between the communication device and an auxiliary network node; and releasing one of the at least one second RB under a condition that, for a first time period, all of downlink data in at least one downlink buffer corresponding to the one of the at least one second RB is successfully transmitted or the at least one downlink buffer corresponding to the one of the at least one second RB is empty, and the auxiliary network node does not receive any request for an uplink grant allocation. |