METHOD TO DYNAMICALLY SELECT A MOBILE OPERATOR SUBSCRIPTION BASED ON THE TERMINAL LOCATION, ON THE RECEIVED SIGNAL STRENGTHS AND ON BUSINESS AGREEMENTS, CORRESPONDING SECURE ELEMENT AND HOME SUBSCRIBER SERVER

摘要

The present invention concerns a method for dynamically selecting a mobile subscription for a secure element cooperating with a terminal (10) in a telecommunication system comprising a network (11) visited by the terminal and a HSS (12) of a server, the method comprising: - sending (100) from the secure element a random e-IMSI ephemeral IMSI in a first attachment request message to the HSS (12) through the visited network (11), the visited network (11) having the best received signal and having a roaming agreement with an e-IMSI service provider; - Transmitting (101) from the HSS (12) to the secure element in a signaling message a PLMN list of all the local operators having a commercial agreement with the e-IMSI service provider; - Transmitting (102) from the secure element to the HSS (12) through the visited network (11) in an authentication failure message an identity of the secure element; - Determine at the level of the HSS (12) if the service provider has a commercial agreement with the operator of the visited network (11) and, if yes, reserving by the HSS (12) a subscription from the operator and sending (103) the corresponding IMSI to the secure element through an answer.