Patent ID: 8804661

Claim:
A method of handling at least a call in handover in a wireless communication system, wherein the wireless communication system comprising at least a wireless communication network and a wireless communication device, the method comprising: receiving a message at a wireless communication device from the wireless communication network which transmits the massage to initiate a single radio voice call continuity (SRVCC) handover for switching at least a packet-switched (PS) call to at least a circuit-switched (CS) call; and setting, at the wireless communication device, a stream identifier of the CS call to an identifier value in response to receiving the message for initiating the SRVCC handover, wherein the wireless communication network further sets a stream identifier of the CS call to the identifier value in response to transmitting the message for initiating the SRVCC handover, and the wireless communication device is a user equipment (UE) with multicall capability of supporting simultaneously at least two CS calls, and wherein when the wireless communication device initiates another CS call after the SRVCC handover by sending a SETUP message to the wireless communication network, the wireless communication device sets a stream identifier of the another CS call in the SETUP message to a value different from the identifier value.