Patent ID: 8958777
Filing Date: 2015-02-17
Classification: H04M,H04W

Abstract:
1. A method for switching calling parties of a voice over LTE (VoLTE) call for a wireless user equipment (UE) device, the method comprising: receiving an indication of a mobile-terminated VoLTE call via a LTE cellular network, wherein a second UE is a calling party for the mobile-terminated VoLTE call; receiving an indication to switch calling parties for the mobile-terminated VoLTE call; arranging to switch calling parties for the mobile-terminated VoLTE call using session initiation protocol (SIP) signaling of a switch caller request based on the indication to switch calling parties for the mobile-terminated VoLTE call, wherein the switch caller request is communicated via a LTE default radio bearer; establishing a mobile-originated VoLTE call with the second UE via the LTE cellular network, wherein the UE is a calling party for the mobile-originated VoLTE call, wherein the mobile-originated VoLTE call is established in response to the indication to switch calling parties for the mobile-terminated VoLTE call, wherein the mobile-originated VoLTE call utilizes a LTE dedicated data radio bearer; disconnecting the mobile-terminated VoLTE call after the mobile-originated VoLTE call is established.