Storing of neighbour cell information for rapid recovery in case of handover failure

摘要

This disclosure teaches a method and apparatus for radio link failure recovery by a User Equipment (UE). The example UE includes one or more controllers that are configured to store cell access information for a target cell that is the target for an impending handover from a serving cell, and for a backup cell that is selected by the UE from among a set of neighboring cells that includes the target cell. Advantageously, in case the handover to the target cell fails, the one or more controllers are configured to retrieve the cell access information stored for the backup cell and to use that information for re-establishing connection in the backup cell. The UE selects the backup cell, for example, as the neighboring cell other than the target cell having the strongest signal conditions with respect to the UE.

主权项

1. A method in a User Equipment (UE) of radio link failure recovery comprising:
selecting a backup cell from among a set of neighbouring cells that includes a target cell, wherein the backup cell is not the target cell and is to be used for reconnecting to a cellular telecommunication network in case an impending handover of the UE from a serving cell to the target cell fails; storing cell access information for the target and backup cells, said cell access information providing the UE with information needed for establishing a connection to the cellular telecommunication network in either the target cell or the backup cell; and if the handover to the target cell fails, using the stored cell access information to reestablish connection with the cellular telecommunication network in the backup cell.