The future of critical data connectivity has been said
to be LTE. The Long Term Evolution networks should be the answer to public
safety or any vehicle data application where large data streams are needed. The
possibilities for on-line video surveillance and larger picture file
transmissions for on-line usage have been just waiting that LTE will develop
out of its infancy. We at Goodmill Systems have always been questioning the
idea that just one network and one technology would be enough for critical applications.
Our recent tests show that even with the usage of LTE there is a great need for
multi channel approach in moving vehicles.
The set/up for the testing was to use one LTE operator
as the primary link to the selected gateway and another, alternative 3G network,
as a second WAN link. The initial target for the pilot was to see the general
availability of the networks in moving vehicles as well as to get first
implications in the capacities achieved through the selected networks.
Achieved data capacities were from 2-10Mbit/s upstream
and 3-10 Mbit/s downstream in the LTE network with average streams at 4Mbit/s
down and 6Mbit/s up. Availability for both networks in general was high in
comparison to previous experience from Goodmill in similar applications in
moving vehicles. LTE availability was surprisingly high considering the early
phase of the network implementation.
The short testing period supports the fact that
despite the great availability of 3G and LTE, the moving vehicles propose a
challenge to the operation that can only be overcome by using multiple networks
with very fast switch over smartly. It is feasible to think that multi channel
solution with two or three selected WAN links will provide enough secure
availability and bandwidth for the needed high end surveillance application. For
more detailed documentation of the study, please don’t hesitate to contact us.
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