DVB-RCS Spotbeam Handover Using Residence Time Estimations in Vehicular Satellite Networks

Lattanzi, Fabio; Açar, Güray; Evans, B.G.

doi:10.1109/asms.2008.47

Cited by 4 publications

(10 citation statements)

References 8 publications

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“…For simplicity, we have set the packet error rate (PER) to 3 10 − in both downlink and uplink. However, the interested reader may refer to [5] for a detailed analysis of the impact of channel conditions over handover performance. We have summarised the main system parameters in Table 2.…”

Section: Ns-2 Modellingmentioning

confidence: 99%

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Performance study of a lightweight DVB-RCS handover scheme for vehicular GEO networks

Lattanzi

Açar

Evans

2008

2008 IEEE International Workshop on Satellite and Space Communications

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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.

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Section: Ns-2 Modellingmentioning

confidence: 99%

“…In particular, the products New connection and handover blocking probabilities are recursively derived from (7) and (9) until the sum of differences between values calculated in two consecutive iterations is below a given threshold (i.e. 5 10 − ).…”

Section: Analytical Modelmentioning

confidence: 99%

Performance study of a lightweight DVB-RCS handover scheme for vehicular GEO networks

Lattanzi

Açar

Evans

2008

2008 IEEE International Workshop on Satellite and Space Communications

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“…The authors in [10][11] proposed DVB-RCS handover scheme for supporting handover decision. After handover detection, if target beam resources are enough to support to handover, handovers immediately decided.…”

Section: Handover Decision / Execution Algorithmmentioning

confidence: 99%

Satellite Beam Handover Strategy to Improve Return Link Resource Utilization

Jang¹,

Lee

Kim

et al. 2011

IJWMN

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“…Previous work from the authors focused on the adaptations required by the DVB-RCS standard to support broadband access onboard mobile collective vehicles [3,22,23]. The impact of mobility on DVB-RCS synchronization mechanisms was evaluated in [22].…”

Section: Mobile Dvb-rcs Network and Terrestrial Gap-fillersmentioning

confidence: 99%

“…In particular, as the user velocity is traditionally neglected with respect to the mobility of LEO satellites (from 18 000 to 25 000 km/h), GEO footprints are considered fixed whereas velocity and routes of mobile collective terminals (e.g. on trains) are assumed to be predictable [3]. Many articles have already addressed admission control and handover management in LEO networks.…”

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confidence: 99%

Admission control and handover management for high‐speed trains in vehicular geostationary satellite networks with terrestrial gap‐filling

Lattanzi

Giambene

Açar

et al. 2009

Satell Commun Network

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Following a recent upgrade, the Digital Video Broadcasting—Return Channel Satellite (DVB-RCS) standard sets up to support terminal mobility. In this scenario, integration with terrestrial systems becomes a primary concern to ensure network connectivity in urban areas. This article proposes an integrated satellite–terrestrial architecture for the provision of broadband services onboard high-speed trains, in which terrestrial cellular networks are seen as viable gap-fillers for discontinuous satellite coverage. We derive an analytical model of the hybrid DVB-RCS-cellular system by exploiting analogies between the mobility pattern predictability of LEO constellations and that of high-speed trains. Terminals whose QoS cannot be guaranteed by the satellite segment are proposed to temporarily divert the connections towards the terrestrial infrastructure, where available. Using an iterative approach based on the Erlang fixed-point approximation, we show performance improvements with respect to stand-alone satellite systems in terms of handover failure probability and overall resource utilization. The analytical model is also validated via our ns2-based DVB-RCS packet-level simulator. Detailed modelling of synchronization and signalling mechanisms confirms the accuracy of the analytical results, and shows that topology and mobility information can contribute to refine radio resource utilization optimality when used jointly

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DVB-RCS Spotbeam Handover Using Residence Time Estimations in Vehicular Satellite Networks

Cited by 4 publications

References 8 publications

Performance study of a lightweight DVB-RCS handover scheme for vehicular GEO networks

Performance study of a lightweight DVB-RCS handover scheme for vehicular GEO networks

Satellite Beam Handover Strategy to Improve Return Link Resource Utilization

Admission control and handover management for high‐speed trains in vehicular geostationary satellite networks with terrestrial gap‐filling

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