Patent ID: 6529732
Filing Date: 2003-03-04
Classification: H04W

Abstract:
A method for supporting features of services, to which a subscriber of a first telecommunication network (HPLMN) has subscribed, in a second telecommunication network (VPLMN), when a mobile station (MS) has roamed from said first to said second telecommunication network (VPLMN), comprising the following steps:a) determining (S2-S4) in the first network (HPLMN) whether features of one or more services to which the subscriber has subscribed to in the first network (HPLMN) are supported or are supported differently in the second network (VPLMN); b) sending (S7) a conversion request message (RM) from a home database (HLR) of the first network (HPLMN), in which the subscriber data and/or service data (SD1-F1 . . . SDn-Fn) for each subscribed service is stored for each subscriber, to a service providing means (ASPM), which provides the features of the subscribed services in the first network, said request message (RM) indicating subscriber data and/or service data (SD1-F1 . . . SDm-Fn) relating to features of the subscribed services which have been determined as being supported differently in the second network (VPLMN); c) converting (S8) in said service providing means (ASPM) the format (F1-Fn) of said subscriber data and/or service data (SD1-F1 . . . SDm-Fn) relating to features of services supported differently in the second network (VPLMN) to a subscriber data and/or service data format (F1-Fn) of at least one service which is supported in said second network (VPLMN); and d) sending a response message (RSM; TM) containing said subscriber data and/or service data (SD1-F1 . . . SDm-Fn) having said converted format back to said home data base (HLR).