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Mission Critical Radiocommunication in Defense and Public Security

Corporate radio has a wide range of solutions tailored to the most diverse types of needs. It is present in the daily life of the manufacturing areas of the most diverse segments of the industry, as well as in the whole structure of services that support it, generically called facilities (safety, health and environment, among others). Nowadays, usually the equipment used by these companies are called DMR-Digital Mobile Radio. There are large industrial plants that, due to the high traffic and large number of users, use mission critical equipment, exceptions being the rule.

At the governmental level, radio communication, rather than a means of communication, is actually a strategic good. In every state in the world, it is a key piece of defense and public security, and it is no exaggeration to say that it is worth more than a weapon, as we live the Information Age.

Because of this, radio communications for mission-critical services differ greatly from commercial radio communications. The crux of the matter lies in the concept of mission critical. Mission critical means any radio communication system that supports communications in which any kind of failure or interruption can cause loss of life or significant damage.

At the technical level the differences are also substantial, starting with the infrastructure that supports the repeating sites. Rugged towers and shelters, redundant links, battery-banked power system that can withstand the airborne radio system for many hours in the event of a power outage.

As for peripherals: cables, antennas, couplers, duplexers have all been carefully sized and chosen to work harmoniously to provide the best possible performance of the system as a whole.

With regard to radio communication platforms, the equipment is also designed for very high performance, given the high traffic demand of corporations that use the system day by day, usually police forces of large metropolises. In general all the technical characteristics of the repeaters that make up the repetition site are differentiated in terms of robustness, power, reception sensitivity, among others.

Thus, Tetra, Tetrapol and APCO25 protocols are recognized as mission critical radiocommunication platforms. Such systems supply the vast majority of military and public security forces around the world.

In Brazil, due to budgetary constraints, public managers are often forced to choose equipment not designed for Mission Criticism, even arguing that the City Guard is not a mission critical, although in practice in many cities it acts as such. In general, it is highly recommended when in doubt when buying or extending a system, assess the number of calls per day and peak hours, the number of groups that make up the system, the number of users, to know if the demanded system is low, medium or high traffic. In short, planning ability is the great differential of the good manager.

Another important factor often overlooked by public managers is the carrying out of technical feasibility studies, conditions of interoperability with the current legacy (in cases of system expansion), prediction of coverage, among others, necessary for the hiring of a radio communication system. efficient public mission. An efficient manager knows that he is not just buying equipment but a solution. Such studies are the basis for the elaboration of a successful basic and executive project.

Dane Avanzi, is a lawyer and President of Aerbras – Association of Radiocommunication Companies of Brazil

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