Abstract
The Universal Mobile Telecommunications System (UMTS) will provide
multimedia services to users in whatever environment via uniform
service access procedures. Efficient Medium Access Control (MAC)
protocols are needed to guarantee high capacity. This paper deals
with Packet Reservation Multiple Access (PRMA), an efficient MAC
protocol that has been widely studied in terrestrial microcellular
systems. We investigate the suitability of PRMA for supporting voice
and data transmissions in a UMTS based on Low Earth Orbit - Mobile
Satellite Systems (LEO-MSSs). It is shown here that, through a suitable
choice of the system parameter values, the PRMA protocol may achieve
a good quality of service also in LEO-MSSs.
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