• Some consumer-grade WAPs support automatic channel selection (ACS), which detects RF interference and automatically selects the channel with the least interference.
  • If ACS is not available: Most 2.4-GHz band wireless routers are configured at channel 6 by default, and cause interference with other WAPs in neighborhood. Changing to channel 1 or channel 11 may reduce interference.
  • For configuration in the 2.4 GHz band, consider using 20 MHz channel width for 11n if a significant amount of RF interferences is present. Some routers support ACS to determine how much RF interference is detected, and then select the channel width as appropriate.
  •  If the router supports dual-band operations, consider setting the 5GHz band to use 40 MHz channel width for 11n.
  • Upgrade 11b and 11g wireless routers to 11n.
  • For 11n routers, be sure that WMM is enabled (requirement to support 11n connections).
  • 11g wireless routers may continue to be suitable to deliver real-time media traffic, depending on concurrent usage and interference.
  • Consider using Wi-Fi CERTIFIED™ 11n devices by Wi-Fi alliance (http://www.wi-fi.org).
  • Consider using higher-quality network adapters with dual-band support and support for a 2x2 stream at minimum. Note that even certified 11n devices may not support 5-GHz band operation or multiple streams.
  • Keep Wi-Fi NIC drivers up-to-date.
  • Enable WMM (most consumer-grade wireless routers support WMM). We recommend implementing QoS for all devices that share the same Internet connection.
  • Implement custom QoS policies on the WAP to prioritize traffic. For multiple device support, we recommend concurrent dual-band wireless routers.
  • We recommend implementing separate SSIDs to force dual-band capable devices to the 5-GHz band because most consumer-grade WAPs do not implement the band-steering feature of enterprise-grade IPs, and not all client devices accommodate the preference of a specific band (if dual-band capable).
  • Bluetooth devices, such as wireless mice, keyboards, game controllers, and cordless phones, may cause significant interference in the 2.4-GHz band. To mitigate this interference, consider wired keyboards and mice.
  • Avoid wireless range extenders (wireless repeaters) if possible, especially for real-time media workloads. Using repeaters may add significant latency. To mitigate range issues, relocate the wireless router or consider wireless network adapters with external high-gain antennas. For larger dwellings, consider multiple small-business-grade WAPs.
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