Affiliations: Space Hellas, R&D Department, 302 Messogion Ave., 155 62, Athens, Greece Tel.: +301 6504292; Fax: +301 6541539; E‐mail: [email protected], [email protected] | Lucent Technologies, Sigma, Windmill Hill Business Park, Swindon, Wiltshire, SN5 6PP, UK E‐mail: [email protected] | Centre for Communication Systems Research, University of Surrey, Guildford, Surrey, GU2 5XH, UK
Note: [] Corresponding author.
Abstract: This paper focuses on the performance evaluation of broadband multimedia services in S‐ATM (Satellite Asynchronous Transfer Mode) systems. The investigation includes service mapping and modelling techniques for both Geostationary (GEO) and non‐GEO systems. The queuing performance and the buffer dimensioning of an S‐ATM network model assuming that the network arrivals at the edges of this network are self‐similar processes is also investigated. A new methodology for creating service classes according to the user‐defined performance criteria is developed. Our approach can be used to dynamically regulate the system's call blocking and handoff failure probabilities for different services classes. A new radio resource management scheme, the Adaptive Bandwidth Reservation Scheme (ABRS) is proposed by incorporating two different threshold values for handling the new calls and the handoff requests. Due to the dynamic bandwidth reservation, each service class maintains a Grade of Service (GoS) profile that has been accepted or negotiated during the call set‐up phase and is guaranteed for a predefined service period.
