A user equipment (UE) communicating with a first base station via a first radio bearer and a second bases station via a second radio bearer is disclosed. Uplink data transmissions using the radio bearers may be controlled by a threshold. During a positioning session to locate the UE, the UE may modify the threshold to cause the UE to use both the first radio bearer and the second radio bearer. The UE may return the threshold to an original value after the positioning session.