Wi-Fi roaming aggressiveness is the rate that your Wi-Fi client automatically selects and switches to another access point or router with better signal quality. If you have trouble connecting to the closest router, or your wireless adapter tries connecting to different routers, check the roaming aggressiveness setting on your adapter.
|Wi-Fi client adapter connection and roaming behavior|
|How to configure roaming aggressiveness settings on Windows Vista*|
|Understand how the power save polling feature can impact roaming aggressiveness|