2.1 Device frequency combo as below
China Mobile calling + internet: 900Mhz + 2600Mhz
China Unicom calling + internet: 2100Mhz + 1800Mhz
China Telecom calling + internet: 800Mhz + 1800Mhz
Therefore, at least a 5-band booster would be selected to meet the demands: 800+900+1800+2100+2600Mhz
2.2 Indoor antenna distribution
Based on client’s requirements and the layout, 4 indoor antennas would be distributed in 1st floor, and 7 indoor antennas on each of 2nd to 5th floor. 32 antennas in total, evenly distributed in the aisle.
Considering that the antenna signal in the aisle needs to cover the room through the wall , the signal strength at the end of each antenna is not fewer than + 5dB. Therefore, two high-power booster with output 27dbm, gain 80dbi would be used. Topology pictures are as follows,
The wiring construction on the floor is shown below：
Due to the preliminary survey and communication of the entire project in place, the project implementation was very smooth and rapid.
The five frequencies could reach full output power. After plugging in , the entire apartment has achieved full Netcom mobile phone signal coverage, and each room and corner can achieve a good Internet and call experience.
From the output value on the screen, the output power of five frequencies all reach a full +27dbm, which could entirely meet the demands.
Exact test on the signal strength and network speed,
Both the strength of the call signal and the speed of the Internet can achieve high-quality results.
As an apartment-type building mobile phone signal coverage, five-frequency full Netcom high-power equipment is undoubtedly the best equipment selection solution. Its advantages are:
1: Complete frequencies. FDD-1800Mhz is not used to solve all operators’ 4G signal, but to use exact frequency to avoid the situation that some phone could receive 4G signal but some can’t. China Mobile 4G must use the TDD standard frequency band to ensure the compatibility of various base-band chips of Apple mobile phones and Android mobile phones, so as to meet the real needs of customers for 4G signals;
2. High output power. The 27dBm output is undoubtedly better to meet more indoor antenna distribution needs. A single device can drive the output requirements of 12-20 indoor antennas (depending on the field environment);
3. 80dbi high-gain. Even when the outdoor environment signal and the source signal are not good, the output signal can be driven to the optimal output state of + 27dBm, maintaining a stable and high speed call Internet signal.