Patent ID: 8463259
Filing Date: 2013-06-11
Classification: H04W

Abstract:
1. A user equipment (UE), comprising: a component comprising a timer, the component so configured that, when the UE loses coverage from a first cell operated as part of a registered public land mobile network (RPLMN), the component searches for a suitable cell before the UE loses a connection to a network, the timer being selected from one or more timers and configured to start when the UE loses coverage, the one or more timers including at least one of an out of service timer or a T wherein the component searches for the suitable cell by: wherein making the first check of the other cells comprises (a) checking for coverage from at least one of a cell on the same frequency as the first cell, and a cell on one of a plurality of frequencies supported by the RPLMN; and (b) checking for coverage from at least one of a cell using a radio access technology (RAT) supported by the RPLMN, and a serving cell other than the first cell using a RAT supported by the RPLMN and different from the RAT used just prior to losing coverage; wherein the component is further configured to make the first check of the other cells by checking for coverage from a neighbor cell of the first cell about twenty-five seconds before the out of service timer or the T