PREFERRED SYSTEM SELECTION ENHANCEMENT FOR MULTI-MODE WIRELESS SYSTEMS Russian patent published in 2013 - IPC H04W48/18 

FIELD: radio engineering, communication.

SUBSTANCE: as described, various techniques can be utilised to synthesise system databases corresponding to different groups of radio access technologies (RAT), such as a public land mobile network (PLMN) list and/or a preferred roaming list (PRL), with one or more overlay databases and associated location information to generate a multi-mode list of preferred systems. As described herein, a preferred system list can be constructed to leverage fine granularity of information in one or more databases while still supporting databases with coarser information. Also described are techniques for augmenting and/or grouping one or more overlay databases to facilitate a higher available granularity of information for various RAT than that provided in system databases corresponding to the RAT. Also provided are techniques for automated generation of a preferred system list based on changes to observed location.

EFFECT: high efficiency of multi-mode system selection in a wireless communication system.

50 cl, 19 dwg