An Improved Dynamic Bandwidth Allocation Scheme Based on Traffic Prediction for DVB-RCS Systems
Proceedings of the First International Conference on Advanced Satellite Mobile Systems ASMS 2003, (July 2003)Abstract
Recently, IP satellite networks are gaining a considerable interest
to deliver high bandwidth services to nation-wide areas. Satellite
bandwidth is a very valuable resource, hence it must be carefully
shared among users. Moreover, IP traffic is inherently a bursty traffic,
hence a dynamic allocation is needed. However, some difficulties
still exist to implement such a method on geostationary satellite
networks, since allocation delays have a negative impact on Quality
of Service provisioning. The main problem arises from the high delay
between the traffic start and the actual bandwidth allocation. To
overcome this problem, a prediction of the resource needs has to
be considered. The proposed technique takes advantage of a proper
statistical traffic modeling to make a prediction of the needed bandwidth.
Moreover, requests take into account the DiffServ traffic class in
order to maintain a QoS priority among different users.