Different queuing policies for handover requests in low Earth orbit mobile satellite systems

Re, E. Del; Fantacci, Romano; Giambene, Giovanni

doi:10.1109/25.752568

Cited by 43 publications

(21 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For both classes of terminals, we assume un t being an exponentially distributed random variable with parameter μ . The position in which a terminal has entered the spot-beam can not be neglected when deriving the expectation of hold t [11]. As a result, we define , or i P and , tr i P as the probabilities that a generic terminal will require a handover in the originating beam and in a transit beam, respectively.…”

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

View full text Add to dashboard Cite

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.

show abstract

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

View full text Add to dashboard Cite

show abstract

“…In that queuing policy, which was named LUI (last useful instant), handover requests are served on the basis of the remaining time interval in the cell until the handover occurrence. The performance disparity between the FIFO and LUI queuing policies was also accentuated in [9], where these queuing policies were assessed under the assumption of a fixed channel allocation scheme.…”

Section: Review Of Cac and Handover Schemesmentioning

confidence: 99%

QoS handover management for multimedia LEO satellite networks

Karapantazis

Pavlidou

2006

Telecommun Syst

View full text Add to dashboard Cite

Low earth orbit (LEO) satellite systems gained considerable interest towards the end of the previous decade by virtue of some of the appealing features that are endowed with, such as low propagation delay and the ability to communicate with handheld terminals. However, after the limited commercial success of the first networks of this kind, future satellite networks are now conceived as complementary rather than competitive to terrestrial networks. In this paper, we focus on one of the most influential factors in system performance, that is, the handover of a call. First, we provide a succinct review of the handover strategies that have been proposed in the literature. Then we propose two different satellite handover techniques for broadband LEO satellite systems that capitalize upon the satellite diversity that a system may provide. The proposed schemes cater for multimedia traffic and are based on the queuing of handover requests. Moreover, a deallocation scheme is also proposed according to which capacity reservation requests are countermanded when the capacity that they strive to reserve is unlikely to be used. Simulation studies further document and confirm the positive characteristics of the proposed handover schemes.

show abstract

“…Many studies have worked on this problem. Some of them focus on adaptive or dynamic resource allocation methods [2], but the complexity of allocation is very high. Some try to adapt fractional or soft frequency reuse scheme of terrestrial cellular system into satellite system [3], but they require a multiple aperture design of satellite.…”

Section: Introductionmentioning

confidence: 99%

Multi-user interference pre-cancellation for downlink signals of multi-beam satellite system

Zheng

Luo

et al. 2013

2013 3rd International Conference on Consumer Electronics, Communications and Networks

View full text Add to dashboard Cite

Multi-user interference pre-cancellation is proposed in this paper for orthogonal frequency division multiple access (OFDMA) multi-beam satellite system to improve spectral efficiency as well as system capacity.Inter-beam interference model is demonstrated, and formulas of Carrier-to-Interference ratio (C/I) are presented, revealing severe co-channel interference among satellite beams. In order to reuse same channel among beams, Tomlinson-Harashima precoding (THP) is introduced to pre-cancel downlink interference of users from different beams, and its performance is analyzed.

show abstract

Different queuing policies for handover requests in low Earth orbit mobile satellite systems

Cited by 43 publications

References 16 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

QoS handover management for multimedia LEO satellite networks

Multi-user interference pre-cancellation for downlink signals of multi-beam satellite system

Contact Info

Product

Resources

About