Time: Jul.27, 2019
Address: Runyuwan Club, Bagua Second Road, Futian District, Shenzhen City
Requirements: Calling and Data signal amplification of all-networks.
Runyuwan Club is located in Bagua Second Road, Futian District, Shenzhen. The shop is close to the street and McDonalds. As a prosperous and dense business center, it is reasonable to say that the three major operators will surely optimize the corresponding signal coverage networks. No matter the density of the base station or the signal strength, it must be a high-quality area.
Why is there a need for all the signals of Netcom (three-network call + three-network network) in such a good location?
The clubhouse is located on the second floor of the shop, in the interior area of the corridor.
At the front desk of the clubhouse on the second floor, people would feel a complete lack of signals. Whether it is China Mobile or China Unicom, the call and Internet signals are very weak, let alone scan CR code to pay. The front desk attendants are used to being out of contact when they arrive at the job.
Therefore, the club and customers are in an unquestionable urgent need of three network 4G and three network call signals, no matter to pay by scanning CR code at front desk or to contact in each room in the clubhouse.
There is no 4G network in the room, and customers are unwilling to go to the club for leisure, this is even more terrible.
From the layout we could see the area of the club is around 400sqm, and the rooms on the upper side are facing the street, where has a good signal strength. The weak signal area is at the front desk area and the lower side area from the layout.
1 .Scheme Design
Band selection of three network calls and three network 4G Internet enhanced signal in Shenzhen City:
The frequency Combo uses common Calling frequency of China mobile GSM 900Mhz, China Telecom CDMA 800Mhz, China Unicom WCDMA 2100MHz, and 4G FDD-LTE 1800MHz of China Unicom and Telecom. Besides, we adopt FDD type 4G signal but not TDD for China Mobile, because as 5G is coming, and China Mobile is re-design 1800MHz, FDD is more efficient and effective.
2．Wiring Construction
3．Testing
After plugging in, the booster work stably and all frequency could have a full output power.
800MHz: 65dB Working Gain, +17dBm full output power
900MHz: 61dB Working Gain, +17dBm full output power
1800MHz: 59dB Working Gain, +18dBm full output power
2100MHz: 60dB Working Gain, +17dBm full output power
These four frequencies are working in best condition.
China Mobile Calling signal is DCS1800MHz, signal strength is full bar -60dBm with a fluent and clear calling quality.
China Mobile 4G data signal is FDD-LTE 1800MHz, signal strength is full bar -72 dBm. Watching real-time videos online is very smooth and high speed.
China Unicom Calling signal is WCDMA2100MHz, signal strength is full bar -73dBm with a fluent and clear calling quality.
China Unicom 4G data signal is FDD-LTE 2100MHz, signal strength is full bar -74dBm with high-speed Internet surfing.
China Telecom Calling signal is CDMA800MHz, signal strength is full bar -60dBm with a fluent and clear calling quality.
China Telecom 4G data signal is FDD-LTE 1800MHz, signal strength is full bar -87dBm with high-speed Internet surfing.
Dot plot in clubhouse, signal strength is excellent for China Mobile 4G 1800MHz and China Unicom 4G 2100MHz.
4．Summary
As a street-facing shop, with the partition of rooms and decoration, it still leads to a large number of signal blind spots. Especially clients need to stay long at the front desk to make the payment with scanning CR code. Fluent and high-speed calling and data signal are essential decoration facilities for merchants. Although WIFI can make up for some of the functional requirements, in the current high 4G network penetration rate, 4G network is a necessary signal environment at anytime, anywhere.
Small-area merchants can use quad-band booster to achieve the functions of three network calls and three-network networks, which is an economical and practical solution for the civilian market.