Resource Management in Hybrid DVB-RCS and WiFi Networks

Satellite networks are an attractive solution to provide broadband communication services anytime, anywhere with quality of service support. The aim of this paper is to study the integration of GEO satellite networks, DVB-RCS- based, with WiFi networks. This is particularly important in emergency scenarios where reliable satellite networks could be integrated with WiFi systems for local mobility support. In this paper, a combined-dynamic resource management scheme, CRA & A/VBDC, is investigated for the satellite segment to support VoIP and FTP elephant connections. A corresponding QoS differentiation is considered in the WiFi segment, based on the IEEE 802.11e standard; in particular, a suitable traffic class mapping is proposed for an efficient interconnection of the DVB- RCS segment with the WiFi one. The obtained results prove the efficiency achieved by the proposed dynamic approach as the number of terminals increases, the good performance obtained with Scalable TCP and the importance of the proposed traffic mapping in the WiFi segment.