November 16, 2011
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Vehicle Public Safety Connectivity and Network Evolution
Modern public safety workers are in desperate need of broadband data connectivity. They need access to databases like patient records, criminal registers, stolen car registers and building drawings, and the data needs to always be up to date. After all, a stolen car can be outside of the country in just a few hours, or medical needs could have changed. Improving the efficiency of data connectivity ultimately increases the safety of the people and can even save lives.
Secure connectivity is what public safety data solutions are all about. While the first part of the term (security) receives much of the focus from various advanced VPN solutions, the second part (connectivity) is too often overlooked. And connectivity is key, especially for those who work from their vehicles in public safety. One might assume that TETRA networks, broadband networks, or the future LTE networks provide what is needed. Unfortunately, that is not the case.
First, current TETRA networks don’t provide data connectivity up to today’s standard of services. TETRA is built for voice, and using data over the network either distracts this main functionality or totally disables it.
Second, the current commercial wireless broadband networks are not reliable. As recently documented in Helsinki Center (one of the best spots for 3G in the world), even in totally covered areas, a single 3G network occasionally provides as low as 70 percent availability in vehicles.
Third, if you wait for the LTE to come and solve all your problems, you’re going to have to wait for a long time. LTE is not yet capable of providing the uptime needed for vehicles, and it will be awhile until it is able to do so.
The ultimate solution for public safety vehicles is to use all of the available network technologies in an intelligent way. TETRA needs to be reserved for voice, and data should be transmitted over TETRA only when absolutely necessary. To ensure broadband availability, two or three commercial broadband networks should be used. As LTE roll-out starts, new technology should be incorporated as soon as possible in regions where it is available.
With a solution this comprehensive and varied, a mobile router capable of great flexibility is required. The router must be able to switch between networks, always selecting the best one. It must be managed remotely for security purposes and minimized operational costs. It must also eventually bring Cloud Services to the vehicle.
This chart illustrates all that router will need to accomplish:
Does this look too far out? If you replied yes, it may surprise you to learn that authorities use this system in Finland. And there is no reason why other public safety organizations around the globe will not put similar products into use in near future. The flexible, comprehensive mobile router we need is already here.
Vice President, Sales
Goodmill Systems Ltd.