| 摘要 |
A method for transmitting an authorization message to terminals includes: transmitting, through multicasting, an authorization message to a plurality of terminals on a transmission network, and. the authorization message carries a multicast address, a product identity and authorization data. A method for receiving an authorization message by a terminal includes receiving an authorization message, when authentication according to a multicast address succeeds; parsing the authorization message to obtain authorization data; and obtaining, from the authorization data, information of whether a subscriber has subscribed to a product. An authorization management system and a terminal device are disclosed as well. According to the above schemes, authorization is accomplished through group-based multicast, so the bandwidth requirement is reduced and time for transmitting the authorization message is saved.
|
