Title :
Modeling handover in mobile satellite diversity based systems
Author :
Gkizeli, Maria ; Tafazolli, Rahim ; Evans, Bany
Author_Institution :
Centre of Commun. Syst. Res., Surrey Univ., Guildford, UK
fDate :
6/23/1905 12:00:00 AM
Abstract :
The objective of this paper is to analyse the impact of different handover strategies on the service quality and network efficiency of non-GEO satellite diversity based systems. To this end, a quantitative analysis by computer simulation of different handover algorithms for mobile satellite diversity based systems is presented. The statistical but predefined nature of the constellation dynamics as well as the influence of the propagation channel in the handover mechanism enables the assessment of different levels of power and time hysteresis for different satellites within the network. Based on the above, two handover algorithms are proposed for different modes of handover operation and compared with existing handover schemes by means of case studies in suburban environments for a LEO and a MEO satellite constellation. The analysis includes the simulation of the constellations and the elevation dependent satellite channel.
Keywords :
bandwidth allocation; diversity reception; fading channels; land mobile radio; mobile satellite communication; quality of service; telecommunication signalling; LEO satellite constellation; MEO satellite constellation; bandwidth allocation; constellation dynamics; fading channels; handover strategies; land mobile satellite environment; mobile satellite diversity based systems; network efficiency; propagation channel; service quality; signaling overhead; suburban environments; Algorithm design and analysis; Artificial satellites; Bandwidth; Computer simulation; Diversity methods; Fading; Hysteresis; Low earth orbit satellites; Mobile computing; Satellite ground stations;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th
Print_ISBN :
0-7803-7005-8
DOI :
10.1109/VTC.2001.956570
