Wireless Coverage Installation & Commissioning Guide

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Position and height

Get the position wrong and everything afterwards is damage control.

Ceiling APs: 2.6–3.2m, clear of metal ceiling battens and sprinkler pipes
Corridor APs: 15–20m spacing, on the corridor centreline rather than facing a doorway
In-wall APs: at the existing plate position, standard 86-box, depth ≥ 45mm
Outdoor APs: 4–6m, clear of vehicle sightlines and lifting zones
Avoid interference sources: not near microwaves, print areas, server rooms, inverters or ESL base stations
Place APs on both sides of columns and partitions — do not rely on penetrating metal finishes

The goal of channel planning is to cut co-channel interference, not to maximise power.

Use only 1 / 6 / 11 on 2.4GHz, alternate between neighbours, and disable the 1/2/5.5/11Mbps low rates
Prefer non-DFS channels on 5GHz to avoid radar-triggered drop-outs, and stagger neighbours
In dense areas deliberately reduce per-AP power to shrink cells and cut interference
Keep neighbouring AP power similar so clients do not stick to the loudest AP
Enable 802.11k/v/r — handover between room and corridor or ward and nursing unit must be seamless

Power causes the most rework on site — work it out before starting.

PoE demand = AP count × per-AP draw × 1.3 against the rated PoE output (estimable on our tools page)
Runs under 100m on Cat5e or better; Cat6 for critical links
Non-standard 24V devices get their own supply path, never mixed into standard 48V PoE ports
Outdoor runs go in conduit or use outdoor-rated cable, with waterproofed connectors
Verify wiring order and length port by port and keep the records

Accept against measurable figures — "it works" is not a standard.

Signal: ≥ -65dBm at main usage points, ≥ -70dBm at the worst spot
Roaming: test the real walking path — voice or video must not break and there should be no re-authentication
Throughput: test with the same client model users carry, meeting the service requirement with margin
Bridges: measure throughput and loss in both dry and wet weather, with a soak test of 24 hours or more
Earthing: measure and record earth resistance at outdoor points
Handover pack: point schedule, channel plan, IP and VLAN plan, earthing records