Call admission control for multimedia connections in interactive satellite networks

This paper presents a Call Admission Control scheme for an Interactive Multimedia Satellite network that employs a link adaptation technique to overcome the effect of the time-varying characteristics of the satellite channel. By associating users´ channel states to particular transmission parameters, the amount of resources required to satisfy user connection requirements will vary as the channel state varies. In the proposed system, adaptive modulation and coding (AMC) is employed for transmission over the time-varying wireless channel of the return link of an interactive satellite network. The proposed CAC policy therefore considers the effect of AMC in its operation. The results show that the performance of the system is better than that of systems that do not consider effects of the time-varying wireless channel of the return link.