Notes on setup WiFi and avoid signal receiving problem

• 2.4Ghz Wifi planning
• Co-channel is okay.  Overlapping channel is not okay.  Wifi is designed to handle co-channel
• On 2.4G, only 1,6,11 channel can be used in US.
• Use 1,6,11 on multiple AP in same room.
• Wi-Fi Back to Basics 2.4ghz planning
• 20 Myths of Wi-Fi Interference (Cisco)
• Use tools to find out unused (or less congested) channel
• For Windows
• InSSIDer
• Ekahau Heatmapper
• Xirrus WiFi Inspector
• For Android
• Wifi Analyser
• Wifi roaming - use same SSID (or ESSID) for different AP.  Computer can auto roam using the nearest AP.
• Change any Wifi Router to Wifi AP
• disable DHCP
• disable any firewall feature.
• do not used the WAN port.  Use any LAN port to connect to the corporate LAN.
• The DHCP server and router on corporate LAN will responsible for routing and IP auto assign.
• Tips on high density wifi (e.g. wifi conference)
• Increase the AP density to decrease device per AP (just like micro cell in cellular network.)
• Decrease Wifi signal strength to reduce signal overlapping.


• use more AP
• channel planning (use 1,6,11)
• use wired LAN for high traffic user
• use 5Ghz