Hi Kwon,
My understanding of the function was always that these surveyed values would have to be manually applied. We don't run WLSE anymore so I can't verify this for you (but I am pretty sure);
How It Works
The Auto Re-Site Survey option uses data collected from previous RM Assisted Configuration jobs to compare the current performance of the selected APs against the performance data collected the last time radio parameter generation was generated for the specified APs and applied to the specific floor. If the APs' radio performance has decreased by 20% (a user-configurable setting), a fault is generated and you are asked if you want to generate new radio parameters. The new radio parameters are compared against the existing data, and if the newly generated radio parameter yield better results, you can apply the new radio parameters to the selected APs.
Data Produced
Auto Re-Site Survey generates a fault if the radio performance of the specified floor decreases by the specified percentage. It also allows you to generate new radio parameters and apply those parameters to the APs of the specified floor.
From this WLSE doc;
http://www.cisco.com/en/US/products/sw/cscowork/ps3915/products_user_guide_chapter09186a0080527f3a.html#wp999433
Hope this helps!
Rob
