A METHOD AND SYSTEM FOR HANDLING VOICE AND NON-VOICE CALLS IN A CSFB SCENARIO

摘要

A method and system for handling both voice and non-voice calls in a CSFB scenario is disclosed. An indication is provided to user equipment (UE) to indicate whether the CSFB call is a voice call or a non-voice call (CS data call). The indication can be provided to the UE by a wireless network in a RRC connection release message or a CS service notification message. Further, the UE upon receiving the indication from the network can indicate whether the CSFB call is a voice call or a data call to a target radio access network (RAN) by providing a priority bit indication to all the voice calls for differentiating the voice calls from non-voice calls. The RAN prioritizes all the voice calls ahead of non-voice calls for the UE in the CSFB scenario.