Method and apparatus to restore always-on connectivity during network handover

摘要

A method and apparatus to restore always on connectivity to user equipment, the method having the steps of: monitoring whether the user equipment has transitioned to a network that supports concurrent voice and data; performing, upon the monitoring step detecting the transition, a routing area update; checking whether the user equipment was in a voice call at the time of the transition, and if yes, sending a data packet to the network.

主权项

1. A method to restore a suspended packet switched service to user equipment in a network that supports concurrent voice and data, the method comprising the steps of:
detecting whether the user equipment is transitioning from a first network that does not support concurrent voice and data and in which a packet switched service is suspended to a second network that supports said concurrent voice and data; and upon detecting that the user equipment is in a voice call during the transition and without reference to routing area or location information, transmitting a data packet from the user equipment to restore always on connectivity of the suspended packet switched service, wherein the transmitting of the data packet occurs immediately after said transition and prior to a routing area update.