Article,

Stability and performance analysis of a MAC protocol for a time-code air interface in LEO mobile satellite systems

, , , and .
IEEE Trans. Veh. Technol., 52 (3): 607--621 (May 2003)
DOI: doi:10.1109/TVT.2003.811532

Abstract

This paper deals with low earth orbit mobile satellite systems (LEO-MSSs) belonging to third-generation mobile networks and proposes a novel packet-access scheme suitable for a hybrid time--code wide-band air interface. This medium-access control (MAC) protocol is a modification of the packet-reservation multiple-access scheme with hindering states (PRMA-HS) and is called code-division PRMA-HS (CD-PRMA-HS). Each mobile terminal that needs to transmit makes random accesses on available time--code resources until it receives a positive acknowledgment from the satellite. Both real-time voice and Web-traffic sources have been considered in our LEO-MSS scenario. An in-depth analysis of the random-access phase has been carried out, thus, identifying the conditions that allow a good CD-PRMA-HS behavior. Finally, a performance analysis has been developed in order to evaluate the quality of service parameters for both voice andWebtraffic sources.

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