2 June 2005 Hybrid terrestrial/satellite networks and interoperability among public safety communication systems
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A recent FCC decision1 has validated a new architecture with the potential to provide all of North America with an unusually broad and powerful wireless communications system. This architecture permits an existing allocation of mobile satellite spectrum to power a hybrid network, comprised of both terrestrial and satellite components. A satellite provides ubiquitous coverage, switching to a terrestrial-based cellular technology when in urban areas. The terrestrial component also provides capacity in areas of high demand. This ultra wide-area hybrid network, in turn, can act as a hub in an interlocking system of networks, incorporating public safety LMRs. The applicability of this system to homeland security should be obvious. It works nearly everywhere. It continues working even when towers are down throughout a wide area. It works with a conventional mobile device in a functionally transparent manner, providing first responders with interoperability, coverage, and redundancy needed to execute both their day-to-day and exigent responsibilities.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Brian M. Deobald, Brian M. Deobald, "Hybrid terrestrial/satellite networks and interoperability among public safety communication systems", Proc. SPIE 5819, Digital Wireless Communications VII and Space Communication Technologies, (2 June 2005); doi: 10.1117/12.606659; https://doi.org/10.1117/12.606659


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