As further described herein, in some embodiments, to support the dual connectivity configuration received from the first RAN, the UE may dynamically enable multiple instances of a communication stack associated with the second RAN. In some embodiments, a first instance of the stack may support a non-stand-alone mode of operation for the first and second RANs. In some embodiments, a second instance of the stack may support a stand-alone mode of operation for the second RAN. In some embodiments, the multiple instances of the communication stack may be supported by a single SIM profile. In some embodiments, the first and second instance of the communication stack may share physical RF resources (e.g., RF transmission/reception capabilities) associated with the second radio. In some embodiments, a higher layer service level and lower level RF arbitration may decide (or determine) which instance has access for transmission and/or reception at any particular time, e.g., based on current service requirements across each instance and/or priority of a service supported by an instance at the radio level. In some embodiments, when an instance of the communication stack is no longer required, the second instance of the communication stack may be deactivated and physical RF resources (e.g., RF transmission/reception capabilities) of the second radio may be re-allocated to the first instance of the communication stack.

At 1318, the first RAN may transmit (e.g., via the first base station) the dual connectivity configuration (e.g., based on the dual connectivity status of the UE) to the UE.