ABC Hospital is planning a Wi-Fi infrastructure upgrade where the 802.

Multipath will increase, causing excessive layer-2 retransmissions. The retransmissions will cause latency for VoWiFi handsets.

Increased receiver sensitivity on the VHT APs will cause them to continually change channels to avoid co-channel interference.

If the existing UTP cabling is not Category 3 or better, the total Ethernet backhaul for each AP will be limited to 100 Mbps.

The existing WLAN plan, including the AP locations, may not provide the benefits seen in HT and VHT 802.11 PHY capabilities.