Quality of service-oriented protocols for resource management in packet-switched satellites
Augustin Iuoras, Peter Takats, Colin Black, R. DiGirolamo, E. A. Wibowo, J. Lambadaris, Michael Devetsikiotis · International Journal of Satellite Communications · 1999
The present paper deals with bandwidth allocation and congestion avoidance in a broadband satellite with on-board switching, oriented towards guaranteeing the Quality of Service (QoS) associated with various traffic/service classes as defined by ATM forum. At the core of the bandwidth allocation a novel uplink (UL) access protocol is proposed, based on a Multi-Frequency Time Division Multiple Access (MF-TDMA) primary access scheme, in conjunction with a downlink (DL) access protocol based on a more traditional Time Division Multiplex (TDM) scheme. This UL access protocol is complemented by a rate-based congestion control protocol (consistent with ATM Forum recommendations), which is an adaptation to GEO satellites environment of the Explicit Rate Indication for Congestion Avoidance (ERICA) algorithm developed for terrestrial networks. The performance of both UL access and congestion avoidance schemes has been evaluated through extensive simulations and the results compared with those obtained with other protocols or by analytical approximations. Copyright © 1999 John Wiley & Sons, Ltd.