Police, fire brigade and rescue workers have access to broadband mobile radio. The Vodafone 3GPP operates a virtual network with LTE and 5G according to the 3GPP Standard Mission Critical Communications (MCX). It complements the established digital bundle radio tetra (terrestrial trunk radio).
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The disadvantage of supporting only data transmission in Tetra is very narrow. In practice, it is not possible to transmit pictures or videos. This change with MCX. This ensures that emergency services have sufficient bandwidth, even if the mobile phone is overloaded, for example with a major event with a large number of people.
Special end equipment is not necessary for this, commercially available LTE or 5G cell phone can be used. They only have to be registered on the network as an emergency power device.
No network slicing
MCX does not have to be confused with network slicing. In network slicing, the share of network capacity is “cut out” and is reserved for some users whether they need capacity. On the other hand, with MCX, the allocation is flexible as required, and more capacity can also be called in the event of event, which will be possible with fixed network slicing.
Vodafone Germany is now launching a new virtual security net and expands it with additional functions during the year. Security forces in the first federal states will soon use the first functions of the new infrastructure.
MCX
The MCX was standardized as part of the 3GPP release 15 in 2018, but is already due to the two -year release 13. At that time, technical parameters were set for Mission Critical Push to Talk. Earlier, MCX primary procedures such as EMBM, Group Communication System Embniters (GCSE) and D2D proximity -based services have been defined. The latter allows direct radio connections between devices without recurrence to the mobile network.
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MCX is being developed gradually.
(Image: 3gpp sa6)
With release 14, Mission Critical Data and Mission Critical Video were added, which includes a framework for improvement in MCPTT and further MC services of the future. Released 15, among other things, the possibility of relationship between various virtual MCX networks and old Tetra networks as well as integration of railway mobile radio. Meanwhile, further reforms have been added, including low delay and the possibility of multiplexing multiple video streams through an EMBMS signal. To include network vehicles and drones, among other things, development is given.
(DS)
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