Patent ID: 7069001
Filing Date: 2006-06-27
Classification: G06Q,G07F

Abstract:
1. A method for supporting cashless payment using a mobile communication system, wherein the mobile communication system comprises an authentication server which interacts with subscriber identification modules of mobile terminals for granting access to the mobile communication system, wherein the method comprises the steps of: transmitting a mobile subscriber identity stored in a subscriber identification module of a mobile terminal of a user to a payment interworking unit; transmitting the mobile subscriber identity from the payment interworking unit to the authentication server of the mobile communication network and requesting, by the payment interworking unit, the calculation of an authentication number and an associated signed response for the user identified by the transmitted mobile subscriber identity; transmitting the calculated authentication number and signed response back to the payment interworking unit; transmitting the calculated authentication number to the mobile terminal; calculating, by the subscriber identification module of the mobile terminal, a signed response based on the authentication number and an encryption key stored in the subscriber identification module and transmitting the calculated signed response to the payment interworking unit; and comparing, by the payment interworking unit, the signed response calculated by the subscriber identification module with the signed response received from the authentication server and sending a confirmation message to a POS unit or a billing system, if the received signed response is correct.