The frequency controller – they are the people with the intangible resources. Without them, the whole society will definitely operate at fault.
To learn about the work of the person in charge of controlling and handling frequency interference, PV VietNamNet turned to the Department of Radio Frequencies …
Welcoming us is Mr. Vu Son Tung – specialist of Frequency Control Department (Department of Radio Frequency). With the Department of Frequency since 2010 until now, Master Vu Son Tung is one of the promising young personnel of the unit. With his solid look and agile demeanor, Mr. Tung told us about the silent work of people working in frequency control in Vietnam.
In order to control and manage the harmonious use of frequency between devices, there is always a need for specialists in frequency interference control and handling.
Frequency control specialists are those who hold intangible resources, without them the whole society will operate at fault. Radio frequency is always considered a particularly important resource in any country.
The characteristic of radio frequency is that this is a finite resource, the more valuable it can be used and exploited. The control and management to ensure the harmony in frequency use between devices is not easy. Therefore, radio frequency is considered a resource … more precious than gold.
Moreover, Vietnam now has nearly 120 million mobile subscribers with widely deployed 4G-LTE network, with millions of radio devices. These devices are used to serve many different operations, from mobile to aviation, maritime, satellite communications, broadcasting, … In that context, the control and handling of Radio communication interference is playing an increasingly important role.
Those who control intangible resources
Sharing with reporters, Tung said that before working as a consultant on frequency control, he had a long time in charge of the position of an expert in radio communication systems to control and handle interference. electricity.
The day-to-day job of an expert like him is to use technical means to monitor the frequency use of radio communication networks.
|Frequency control specialists are installing semi-permanent checkpoints at the US-Korea Summit.|
To do that, Vu Son Tung and his colleagues will use the checkpoint system scattered throughout the country to check and supervise the compliance with the law on using radio frequencies. .
In addition to monitoring the use of frequencies, specialists of the Department of Frequency must proactively identify interference risks and take timely measures to ensure safety of radio information. This is a frequent occurrence because during operation, radio stations can interfere with each other, leading to loss of radio communication or insecurity.
According to Tung, the most commonly mentioned incidents are interference of mobile communications, private networks and television broadcasting, rescue frequency interference, rescue, flood and storm prevention, aviation operators, radio stations. national telegraph and security and defense networks.
|Mr. Vu Son Tung – specialist of Frequency Control Department (Department of Radio Frequency – Ministry of Information and Communications).|
Causes of interference often come from the improper use of radio frequencies and devices, equipment problems or the use of smuggled equipment with frequencies that are inconsistent with the planning. In order to handle each of the above cases, the Department’s specialists must control and measure the parameters at the disturbed radio with specialized equipment, then orient and trace the source of the interference. This is the daily work of a frequency specialist, very quiet but meaningful.
Soldiers silently at the US-Trieu Summit
In addition to the routine control and handling of interference, another important task of specialists like Mr. Vu Son Tung is to coordinate control and handle interference at major events such as the Party Congress. , APEC or recently the My Trieu Summit has just been held in Hanoi.
At those important events, radio devices were used in very high densities in many different units and in the same narrow space. When the density of radio equipment is too great, signal congestion is very likely to occur.
At this time, specialists must determine the cause and find measures to handle the interference to ensure the radio system works smoothly.
|Mr. Vu Son Tung (third person from the right) at the inspection of the Press Center activities during the 2019 US-Trieu Summit.|
When asked about his most memorable memory, Tung recalled, during the process of ensuring the safety of the My Trieu Summit, his working group encountered a situation of public Wi-Fi networks at the Press Center. Conference’s interference. The incident made many international journalists find it difficult to convey information and articles about the conference and images, the country and people of Vietnam to the world community.
The cause of the problem is determined by the high density of personal Wi-Fi transmitters. In addition, the Wi-Fi network at the Press Center is accidentally affected by some oppressive devices.
After determining the cause, the working group coordinated with the Department of Electronic Warfare to adjust the capacity, location of equipment and pressure regime. This must be done in a way that both the suppression of unmanned flying objects (UAVs) is ensured, but also not to interfere with the Press Center Wi-Fi network.
Thanks to the above interference source handling and coordinating action, the Wi-Fi network at the Press Center soon returned to normal. Thereby, the frequency management working group has contributed to demonstrate Vietnam’s technical capacity when organizing international events.
The first person to use UAVs to control and handle interference in Vietnam
The most prominent success of Tung and his associates over the past year has been the use of drones to control and handle interference. This is also the first time UAV is used to control and handle interference in Vietnam. The biggest difficulty in handling interference for an aerospace radio system is the point where the interference is located in a specific location in space.
|Mr. Tung is the person who directly performs the use of drones to control interference in Vietnam.|
Therefore, in order to approach the disturbed location, the working groups of the Department of Frequency must study the use of unmanned aerial vehicles. The first flight UAV for control and interference handling was just 200m high, carrying a measuring device just 200g. Up to now, the working group has designed UAV carrying a weight of up to 6kg and successfully handled incidents at altitudes up to 500m. With this result, Tung’s UAV method of interference treatment has been replicated and deployed in many places across the country.
As an advanced typical individual of the Department of Radio Frequencies, Mr. Vu Son Tung is a representative image of the experts who are performing the frequency control and management in Vietnam.