This article refers to the basic outline of the type of installations i have seen to be working fine for lift WiFi coverage.
Following points were considered for the design –
Type 1:
Type 2:
Type 3:
There are other methods to design this as well - 1. Mesh/Bridge/WGB between an AP inside the Lift & an AP atop the lift shaft. 2. AP atop lift shaft 3. Staggered deployment of AP's along the lift shaft, anticipating coverage inside the lift Considering the heavy multipath & SCCR we may observe and the potential number of AP's we may require to achieve the objectove, any deployment which may have an AP trying to communicate with another AP may face severe degradation. Due to this reason, i personally consider AP deployment inside the lift car as a better option and have recommended Type 3. Some other design considerations that we will need to follow - 1. We would have the Elevator car AP’s operate on 20MHz channel 2. AP's inside the elevator cars will have static channels 3. Operating power for each of these AP’s is to be carefully considered and should be set to minimum possible. 4. Given the fact that we have dedicated AP’s in each Elevator so the capacity should not be affected as each AP should be able to handle the load of even concurrent calls/videos from multiple users. Given the tricky environment, careful considerations need to be made for AP's around the lift area as well. Considering that the ARM/RRM refresh periods should be considerably higher than the interval of time the lift door will be open for, we should not see any ripple efftects of a dedicated AP inside the lift. Operationally speaking, either Type 1, Type 2 or Type 3 should work out just fine but other types can also be evaluated and then chosen to see what fits best for the environment. Comments are closed.
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