Installation Scenarios and Requirements
Installation Scenario
An AAU5611 can be installed on a pole on the rooftop or tower, as shown in the following figure.
Figure 5-1 Installing the AAU5611 on a pole
| (a) Downtilt supporting arm installed on the upper handle of an AAU | (b) Downtilt supporting arm installed on the lower handle of an AAU |
Table 5-1 lists specifications of mounting kits.
Table 5-1 Specifications of mounting kits
| Item | Mounting Kit+Mechanical Downtilt Supporting Arm |
| Weight | 9.7 kg |
| Mechanical downtilt | –20° to +20° |
Requirements for the Pole
The following table describes the requirements for the pole where the AAU is installed.
| Installation Scenario | Weight-bearing Capacity | Heightc | Diameter (Φ) | Wall Thickness | Number of AAUs |
| The AAU is installed on the main polea. | 300 kg | ≥ 1500 mm | 70 mm ≤ Φ ≤ 100 mm | 4 mm | 1 |
| ≥ 1500 mm | 100 mm ≤ Φ ≤ 114 mm | 4 mm | 2 | ||
| The AAU is installed on the auxiliary poleb. | 300 kg | l Auxiliary pole on the tower: ≥ 1500 mm l Auxiliary pole on the rooftop: ≥ 1500 mm | 50 mm ≤ Φ ≤ 60 mm | 4 mm | 1 |
| Auxiliary pole on the tower: ≥ 1500 mm | 60 mm ≤ Φ ≤ 114 mm | 3 mm | 1 | ||
| Auxiliary pole on the rooftop: ≥ 1500 mm | 60 mm ≤ Φ ≤ 114 mm | 3 mm | 2 |
l a: When the AAU is installed on a main pole, the bottom of the pole must be secured on a support.
l b: When the AAU is installed on an auxiliary pole, both the upper and lower ends of the auxiliary pole must be secured on the main pole.
l c: The height refers to the minimum length of a pole required for installing an AAU.
Installation Clearance Requirements
The following figure shows the clearance requirements for installing an AAU on a pole.
Figure 5-2 AAU installation clearance
| (1) Mounting kits: upper handle | (2) Mounting kits: lower handle | (3) Anti-falling safety reinforcement hole |
Acronyms and Abbreviations
Table 6-1 Acronyms and abbreviations
| Acronym or Abbreviation | Full Name |
| AAU | active antenna unit |
| BBU | baseband unit |
| CPRI | common public radio interface |
| eCPRI | enhanced common public radio interface |
| EIRP | equivalent isotropically radiated power |
| IBW | instantaneous bandwidth |
| OBW | occupied bandwidth |
| NR | New Radio |
| 3GPP | 3rd Generation Partnership Project |
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