Patent ID: 9055488
Filing Date: 2015-06-09
Classification: H04W

Abstract:
1. A method for assisting a wireless communication device to return to an LTE (Long Term Evolution) network from a legacy network, the method comprising the wireless communication device: participating in a Circuit Switched Fallback (CSFB) procedure to transition the wireless communication device from the LTE network to a legacy network for servicing of a voice call, wherein the legacy network has a circuit switched domain and the voice call is handled by the circuit switched domain of the legacy network; receiving a connection release from the legacy network after termination of the voice call; initiating a reselection procedure to reselect to the LTE network in response to receipt of the connection release from the legacy network; determining presence of packet switched data ready for transmission from the wireless communication device after initiating and before completing the reselection procedure; holding the packet switched data at the wireless communication device at least until expiry of a reselection timer initiated during the reselection procedure; reselecting to the LTE network after expiry of the reselection timer; and initiating transmission of the packet switched data on the LTE network after completing reselection to the LTE network.