Title :
Performance study of a lightweight DVB-RCS handover scheme for vehicular GEO networks
Author :
Lattanzi, Fabio ; Acar, Guray ; Evans, Barry
Author_Institution :
Centre for Commun. Syst. Res., Univ. of Surrey, Guildford
Abstract :
In the last few years, EU and ESA have funded several research programmes to investigate mobility issues related to the extension of the ETSI DVB-RCS standard in order to provide mobile collective vehicles with broadband access. In this paper, we analyse the performance of a lightweight DVB-RCS handover scheme which relies on a history of recent GPS measurements to estimate the terminal residual residence time within the current spot-beam. A geostationary vehicular satellite network is envisaged which is populated by two classes of terminals sharing the same resources: aircrafts and high speed trains. Mobility updates are periodically conveyed via SYNC bursts to the NCC which implements a threshold-based queuing strategy to prioritise handover requests and minimise the number of connections forced to termination. A first-order approximate analytical model of the network is proposed which is used to derive new connection and handover blocking probabilities. Results are validated through an accurate NS-2 modelling of existing DVB-RCS signalling mechanisms. It is emphasised that our handover scheme does not introduce any change to the signalling messages that are already laid out in the DVB-RCS specification.
Keywords :
automotive electronics; broadband networks; mobile radio; queueing theory; SYNC bursts; broadband access; geostationary vehicular satellite network; lightweight DVB-RCS handover scheme; threshold based queuing strategy; vehicular GEO networks; Aircraft; Current measurement; Digital video broadcasting; Global Positioning System; History; Performance analysis; Satellites; Telecommunication standards; Time measurement; Vehicles; geostationary; handoff; handover; mobile DVB-RCS;
Conference_Titel :
Satellite and Space Communications, 2008. IWSSC 2008. IEEE International Workshop on
Conference_Location :
Toulouse
Print_ISBN :
978-1-4244-1947-0
Electronic_ISBN :
978-1-4244-1948-7
DOI :
10.1109/IWSSC.2008.4656791