| 摘要 |
The aim of the present invention is to propose a method to reduce the bandwidth necessary for the renewal of subscriptions to the reception of broadcast services. This aim is achieved by a method for the allocation and management of subscriptions to a plurality of products for at least one receiver comprising a security module, this module comprising a unique identification address UAO, this method being carried out by a management centre and comprising the following steps: - defining a plurality of sets of subscriber identification numbers AB, each set being associated with a product, - splitting a set of subscriber identification numbers into groups of subscribers, - searching for an available subscriber identification number ABk related to the desired product at the time of the initialization of a new subscriber, - determining if this available number has already been previously allocated, - if so, determining if an inhibit duration has elapsed between the end of the previous subscription and the start of the new subscription, if not, searching for a new number, - send ing an initialization message to the new subscriber addressed according to his unique identification address UAO and containing the subscriber identification number ABk of his product as well as the rights to said product, - preparing a group rights renewal message for the product to the group containing the subscriber identification number ABk, this message comprising the group header containing this subscriber ABk and a bitmap allowing to individually address each of the group members, - compressing the bitmap and adding the compressed bitmap to the message, - sending the renewal message. |
