Designing Wi-Fi is not about spacing access points evenly. Performance depends on materials, height, devices, applications, interference and concurrent users. A network may show signal bars yet suffer poor capacity or disconnections.
Coverage and capacity
Coverage determines whether signal is sufficient; capacity determines how many devices and how much traffic each cell supports. In a warehouse with mobile scanners or an office with video calls, both must be calculated separately.
Floor plans and site surveys
Predictive design uses floor plans, materials, heights and available locations. At critical sites it is complemented by on-site measurements of noise, neighboring networks, actual loss and installation constraints.
Channels, power and roaming
More power does not always help. It can enlarge cells, increase interference and make devices less likely to roam. Channels, channel widths and power must be coordinated for the available spectrum and actual density.
Security and segmentation
Staff, guests, operations and devices must be separated through authentication, VLANs and policies. Equipment management, credentials and updates must also be protected.
Post-installation validation
After installation, coverage, signal-to-noise ratio, interference, speed, roaming and application experience are verified. Results are documented for maintenance and future changes.