Hello,
I have experience with SNMP and its tools. I downloaded MIB file and find values that you request in job description. There are RSSI, noise floor, Tx/Rx rates. I couldn't see only radio connection rate. It might be named differently by the company. We can discuss details of your needs. If you need OID number of those values, I can find them.
Best regards,
Cumali Ceylan