Efficient integration of isochronous and data bursty traffics in low earth orbit-mobile satellite systems

This paper focuses on the radio resource management in low earth orbit‐mobile satellite systems (LEO‐MSSs) based on a time division multiple access (TDMA) air interface. A novel demand–assignment medium access control (MAC) protocol, named DRAMA+ (dynamic resource assignment multiple access—enhanced...

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Bibliographic Details
Published in:International journal of satellite communications 2002-05, Vol.20 (3), p.201-229
Main Authors: Andreadis, Alessandro, Angioloni, Riccardo, Fantacci, Romano, Giambene, Giovanni
Format: Article
Language:English
Subjects:
Access methods and protocols, osi model
Applied sciences
Equipments and installations
Exact sciences and technology
medium access control protocols
Mobile radiocommunication systems
multimedia traffics
performance analysis
Radiocommunications
Satellite telecommunications. Space telecommunications
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Teletraffic
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Summary:This paper focuses on the radio resource management in low earth orbit‐mobile satellite systems (LEO‐MSSs) based on a time division multiple access (TDMA) air interface. A novel demand–assignment medium access control (MAC) protocol, named DRAMA+ (dynamic resource assignment multiple access—enhanced version), is proposed, where voice and Web traffic sources obtain transmission slots through requests sent by means of a random access phase. The round‐trip propagation delay (RTD) of LEO‐MSSs prevents an immediate feedback for each transmission attempt. Therefore, the main concern of the DRAMA+ scheme is to realize an efficient access phase. All the transmission requests successfully received at the satellite are managed by an on board scheduler. We have shown that DRAMA+ outperforms other techniques appeared in the literature in terms of voice quality, transmission delays for bursty data traffics and resource utilization. Moreover, a performance analysis of an ideal version of the DRAMA+ scheme has permitted us to prove the potentialities of the proposed DRAMA+ technique. Stability issues have been addressed as well as the impact on the DRAMA+ performance of the LEO satellite constellation RTD value. Copyright © 2002 John Wiley & Sons, Ltd.
ISSN:0737-2884
1099-1247
DOI:10.1002/sat.721