Security scenario definition report

This document aims at identifying and describing the preliminary system architecture of a rapidly deployable and interoperable mobile broadband emergency communications system that best meet mobile communications requirements for security applications. The overall architecture is IPv6- based and the important role of Vehicle Communication Gateways (VCGs) in the system is highlighted. Thanks to the satellite and wireless interfaces, VCGs are able to connect via satellite the disaster area with the headquarter, to create an inter-vehicular mobile ad-hoc mesh network in the emergency field and to provide connectivity to isolated IPv6 wireless cells. Two types of VCGs are envisaged, S-UMTS vehicles operating in L or S band and nomadic Digital Video Broadcasting, Return Channel via Satellite (DVB-RCS) vehicles operating in Ku or Ka band. The major characteristics of the proposed system architecture for emergency mobile communications are presented and the results of preliminary satellite link budgets are provided