Article,
Proposal and Performance Evaluation of an Efficient Multiple-Access Protocol for LEO Satellite Packet Networks
IEEE J. Select. Areas Commun., 22 (3): 538--545 (April 2004)
DOI: doi:10.1109/JSAC.2004.823437
Abstract
This paper deals with a modified version of the packet reservation
multiple-access (PRMA) protocol suitable for integration of real-time
(voice) and best effort (data) traffic in low earth orbit (LEO) satellite
communication systems. The proposed scheme differs from previous
alternatives on the method adopted to handle access requests for
voice and data terminals, and to transmit data messages. An analytical
approach is proposed and validated in the case of voice and classical
(i.e., geometric distributed) data traffic in order to derive system
performance in terms of mean data message delay and voice packet
dropping probability. However, in order to better highlight the advantages
of the proposed approach typical interactive and background traffics
types have been also considered. Performance comparisons with previous
proposed PRMA protocols for voice and data transmission in LEO satellite
communication systems are also shown in order to highlight the better
behavior of the proposed scheme. Finally, a brief discussion concerning
the extension of the proposed S-PRMA protocol to the case of different
satellite communication systems is also provided.
