Patent ID: 9252936
Filing Date: 2016-02-02
CPC Classification: H04L,H04W

Claim Text:
1. A method of operating a wireless terminal comprising: the wireless terminal sending a request to participate in a circuit switched call with a circuit switched network; prior to establishment of the circuit switched call the wireless terminal releasing or performing an inter-radio access technology handover of an existing packet switched session with an original packet switched network; establishing the circuit switched call with the circuit switched network; the wireless terminal reconnecting to the packet switched session to obtain a reconnected packet switched session; and the wireless terminal interleaving packet switched transmissions of the reconnected packet switched session with voice transmissions of the circuit switched call; wherein reconnecting to the packet switched session further comprises the wireless terminal sending an update message to a radio access network after the circuit switched call is established for reconnecting to the packet switched session, wherein the update message indicates to the radio access network that the wireless terminal is reconnected to the packet switched session.