This object reports the current IEEE 802.11 receive data rate, in Mbit/s, being used for the connection to a specific station. An admin can watch this to judge real-time link quality, since a low RX rate compared to the radio's capability indicates the connection has fallen back to a slower, more robust modulation due to poor conditions. If ciscoUrwbStaRxRate drops significantly as a mobile unit moves further from a trackside access point, the admin would expect this as normal behavior of the radio adapting to weakening signal.