SIMULTANEOUS AUTHENTICATION AND AUTHORIZATION MECHANISMS: FOR A MASSIVELY LARGE MULTIMEDIA BROADCASTING SERVICE

摘要

With the support of the high-power S-band satellite and additional ground antenna systems, the China Mobile Multimedia Broadcasting (CMMB) combines a unidirectional broadcasting service and a bi-directional mobile multimedia communications system. As such, CMMB is capable of handling very large amounts of data, supported by bi-directional authorization between user and service. However, with the heavy increase in its users, the authentication and authorization processes can experience challenges.