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Journal of Computer Networks and Communications
Volume 2014, Article ID 562546, 16 pages
http://dx.doi.org/10.1155/2014/562546
Research Article

TETRA Backhauling via Satellite: Improving Call Setup Times and Saving Bandwidth

Deutsches Zentrum für Luft- und Raumfahrt (DLR), Oberpfaffenhofen, 82234 Weßling, Germany

Received 15 July 2014; Accepted 19 September 2014; Published 16 October 2014

Academic Editor: Lixin Gao

Copyright © 2014 Anton Donner et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In disaster management scenarios with seriously damaged, not existing, or saturated communication infrastructures satellite communications can be an ideal means to provide connectivity with unaffected remote terrestrial trunked radio (TETRA) core networks. However, the propagation delay imposed by the satellite link affects the signalling protocols. This paper discusses the suitability of using a satellite link for TETRA backhauling, introducing two different architectures. In order to cope with the signal delay of the satellite link, the paper proposes and analyzes a suitable solution based on the use of a performance enhancing proxy (PEP). Additionally, robust header compression (ROHC) is discussed as suitable technology to transmit TETRA voice via IP-based satellite networks.