Wi-Fi roaming aggressiveness refers to the rate that your Wi-Fi client automatically selects and switches to another access point or router with better signal quality. If you are having trouble connecting to the closest router or your wireless adapter is constantly trying to connect to different routers, this may be due to the roaming aggressiveness setting on your adapter.
Wi-Fi client adapter connection and roaming behavior
Various roaming behaviors along with their explanations
How to configure roaming aggressiveness settings on Windows Vista*
How to configure roaming aggressiveness settings on Windows XP*
Understand how the power save polling feature can impact roaming aggressiveness
This applies to: