Title :
Analysis of the Efficiency and Delay of Bandwidth Request Algorithms in DVB-RCS
Author :
Omari, A. ; Seco-Granados, G. ; Vázquez-Castro, M.A. ; Morell, A. ; Lyhyaoui, A. ; Raissouni, N.
Author_Institution :
Dept. of Telecommun. & Syst. Eng., Univ. Autonoma de Barcelona
Abstract :
The bandwidth-on-demand (BoD) access mechanism plays a key role in DVB-RCS satellite systems in order to optimize bandwidth utilization. Two algorithms intervene in this mechanism, namely the bandwidth allocation algorithm and the bandwidth request algorithm. In this paper a bandwidth request algorithm is proposed. An adaptive version of the algorithm is also presented, which allows for an easy control of the queue size at the terminal even in changing traffic conditions. An event-driven simulator of the BoD loop has been developed and used to evaluate the performance of the proposed algorithm. Simulations have carried out for different combinations of Poisson and VoIP traffic. They show that the algorithm reacts correctly to sudden changes of the input rate and of the received allocation
Keywords :
Internet telephony; bandwidth allocation; channel allocation; digital video broadcasting; direct broadcasting by satellite; discrete event simulation; stochastic processes; telecommunication traffic; BoD; DVB-RCS satellite system; Poisson traffic; VoIP traffic; bandwidth allocation algorithm; bandwidth request algorithms; bandwidth utilization; bandwidth-on-demand access mechanism; digital video broadcasting; event-driven simulator; return channel system; Adaptive control; Algorithm design and analysis; Bandwidth; Board of Directors; Channel allocation; Delay; Digital video broadcasting; Programmable control; Satellites; Traffic control;
Conference_Titel :
Satellite and Space Communications, 2006 International Workshop on
Conference_Location :
Madrid
Print_ISBN :
1-4244-0118-6
Electronic_ISBN :
1-4244-0119-4
DOI :
10.1109/IWSSC.2006.256016
