Case studyTypical scenario · demonstration data5G SA · n78Indoor · high floorDominance · pilot pollution
High floor: restoring 5G DAS dominance over the macro cells
Walk test on the 14th floor of an office tower, 5G SA n78, original DAS then extended DAS.
Root cause and correction
Root cause
- DAS design centered on the corridors: the indoor cell does not dominate at the façades, where the surrounding macro cells come into line of sight on high floors.
Corrective actions
- Four antennas added close to the façades
- +3 dB of power on the floor branch, after checking the uplink budget
- Design rule for high floors: 6 dB dominance targeted at the façades