This paper presents a study on development and evolution of Public Protection and Disaster Relief (PPDR) communication networks in the perspective of the next 15-20 years. A need for modern, reliable mobile communications systems for PPDR offering a wide range of services, yet harmonized, is commonly recognized at both country and European level. There are therefore a number of activities in this area currently being undertaken. In this paper we discuss several technical aspects of migration of PPDR networks towards broadband systems and describe the most likely upgrade scenario based on an evaluation of migration costs.
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