Satellite UMTS/IMT2000 W-CDMA air interfaces
IEEE Communications Magazine
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This paper deals with Low Earth Orbit - Mobile Satellite Systems (LEO-MSSs) and proposes a novel Medium Access Control (MAC) scheme for a hybrid time-code wideband air interface. This is a reservation scheme where each mobile terminal that needs to transmit makes random accesses (on available time-code resources) until it receives a positive acknowledgment from the satellite. Our protocol is named Code Division-Packet Reservation Multiple Access scheme with Hindering States. This work has been carried out within the "Multimedialit脿" Project of the Italian National Consortium for Telecommunications.