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Mobile Signal Coverage Solution For High-Floor Elevators

China Shenzhen Atnj Communication Technology Co., Ltd. certification
China Shenzhen Atnj Communication Technology Co., Ltd. certification
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It arrived in time I am very satisfied with the support. The product si in very good conditions. I proved it and works very well.

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Ms Anne Wang works hard to provide very good service for customers. A pleasure to deal with. Product is as described and good value for money.

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Super fast delivery and superb service/help from supplier. I haven't had a chance to try out the product but I am confident it will work fine. If not, the supplier is really helpful and I am sure he will assist me with futher installation details

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I haven't used the product yet but it looks like a quality product. Wave Luo was very helpful, thank you very much!!!!

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ATNJ, You got good products with good services, fast and easy to communicate.

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—— CARLOS GREGORIO,United States

Let’s be honest, the quality of my Vodafone mobile signal at home always left much to desire. I just was too lazy to do anything with it. I was absolutely satisfied with the rates and the quality of the signal that I had everywhere and my own house was an exception. However, the coronavirus pandemic changed everything. I started to spend much more

—— Ali , Spain

I bought this booster for my apartment because I was absolutely dissatisfied with the power of GSM and 4G signals that I had there. But now the situation has changed. Thank you for this booster, I finally don’t feel isolated when I stay at home alone.

—— Abdul Mohammed,Germany

I think that’s a very nice solution for those who suffer from problems with voice services and mobile internet and do not want to create any antennas or smth like that themselves. The price is absolutely fair and the quality is amazing.

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I was very happy to see the discount that you offered. I know that quite often companies make discounts on goods that are not popular but in this case, I see that the situation is quite opposite. I like that this device is able to improve calls and the internet speed at the same time.

—— Giulia M.,Austria

Thank you! The booster is super cool for a private house. All the rooms are now covered with the improved signal. Now I can’t understand why we haven’t bought it earlier.

—— Nadine Nacht ,Germany

It’s a very cool booster! Thank you, dear team, for your attention to your clients’ needs and the prices that you offer. You are the best, ATNJ

—— Natalia L.,Norway

My 3G and GSM connection used to leave much to desire. But with m new booster I have practically forgotten all these problems. I really like that this device is so compact but so powerful. Thanks, guys, for your amazing work and fast delivery.

—— Goran N. ,Sweden

I can’t understand why I bought this repeater only 2 months ago and not earlier. That’s a very useful device for those who live in a rural area like my family. The improved quality of connection has significantly improved the quality of our life.

—— Lars M. ,United States

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Mobile Signal Coverage Solution For High-Floor Elevators

April 11, 2022
Latest company case about Mobile Signal Coverage Solution For High-Floor Elevators
Time: Jun.02 2019
Address: Jiangyou Financial Center, Jiangyou City, Sichuan Province
Requests: mobile signal coverage in 8 high-floor elevators and 3 low-floor elevators I new-built building area.
Jiangyou Financial Center is located in Jiangyou City, Mianyang City, Sichuan Province with beautiful scenery and pleasant climate. Jiangyou City has a permanent population of about 500,000, which belongs to the construction and scale of a county-level city. As with the development momentum of county-level cities in other cities in China, new buildings and high- rise buildings are lining up. Infrastructure establishment and development are growing rapidly, and there is also a strong demand for communication equipment construction and network coverage.
The Financial Center is a new building that is about to live. The building includes 4 high-floor residential buildings with 28 floors and above(eight high-floor elevators) , 1 low-floor building with 8 floors, and a 5-floor street shop. The entire building is in the final stage to hand over. The entire project is in the final sprint construction phase of greening, security monitoring, communication equipment and fire protection facilities.
Because the signal providers can’t meet the demands of signal coverage, and the project acceptance stage is imminent. The project team needs to cover the signal blind area with calling signal to meet the demands of project acceptance and delivery.
Therefore, we adopt our One-Take-One system to solve the eight 30-floor elevators signal problem (28 ground floors, and 2 basement floors). As for three low-floor elevators (2 8-floor elevators and 1 5-floor elevators ), single-device system is adopted.
High-Floor elevators One-Take-One system: even if the building is high to 30 floors (the length of elevator is over 100 meters), the remote unit has dynamic AGC mode to meet the demands of signal coverage in elevator box, in 28-floor or -2 floor.
Low-floor elevators: as the length of the elevator shaft is fewer than 30 meters, an high gain elevator antenna could meet the demands of signal cover in such a space, and it’s easy to penetrate signal into the elevators box.
Device: GSM900 + 1800Mhz (front 45Mhz) dual band booster. This frequency combo matches the low-frequency calling and high-frequency calling signal of China Mobile, and no matter how signal provider upgrades their base station, it won’t affect the clients’ use. Besides, the 1800Mhz (front 45Mhz) is also compatible to the upgrading 4G data signal of China Mobile, it means our solutions would also offer the coverage of 4G data signal (which is not included in the demands of client.), and clients would have a great 4G VOLTE calling experience.
Installation and Construction
There are two high-floor elevators in one building, and they share one equipment room.
The outdoor LPDA antenna could be installed on the outer wall of elevator equipment room, and face to outer open surroundings, then the antenna could receive good signal sources of GSM900Mhz and 1800Mhz.
Device installation in equipment room: boosters are mounted on the wall, and the cable could get through the pipes or cable tray of equipment room to wire.
Elevator antenna installation: the wiring must meet the installation requirements of the the elevator equipment engineering company.
Device Installation on the elevators box and the wiring must meet the installation requirements of the the elevator equipment engineering company and the cable must get through the pipes or cable tray of equipment room to wire.
Device debugging
To ensure the best signal coverage, please adjust the output power of two main units (boosters in equipment room) to max 17dbm, adjust the gain as high as possible (no lower than 50dBm), decrease the gain compression and output compression .
On screen, S1 is GSM900Mhz, and S2 is 1800MHz. In the pictures above, the output power of 900MHz and 1800Mhz are both full 17dBm, and gain are 55dBm and 63dBm, both of them won’t have much gain compression. The working status and output power have a best performance.
After debugging, walk around in elevator box to test the signal. When mobile is standby, signal strength is -52dBm and -63dBm, full bar.
When the elevator is working, have a calling signal test: signal strength is between -72 to - 79dBm, full bar signal, and fluent calling experience.
Just as the situation is considered in the was considered at the beginning of the solution, 4G data signal also would be strengthened in elevator box. Signal strength is -88dbm, and network speed is 16M/S for DL, 4M/S for UL, which could totally meet the 4G network demands in elevator box.
Project summary
For a solution with single signal provide-China Mobile, considering the long-term use, GSM900MHz/1800MHz (front 45MHz) are best frequency combo to amplify calling signal. If client’s demands are calling + data, we have to consider more factors, like the upgrade / adjustment of signal provider, and multi-frequency combo are best. The frequency combo of GSM900+DCS1800+TDD1900/TDD2300/TDD2600 (self-adaptive) is requested to meet the current and future needs of signal use.
One-Take-One syytem for high-floor elevator, it’s easy to debug, and install, which is the best choice for a elevator solution.
Contact Details
Shenzhen Atnj Communication Technology Co., Ltd.

Contact Person: Mr. Wave Luo

Tel: +8618813582037

Fax: 86-755-86136774

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