Can't connect with wireless USB Dongle via ICS

Hi there,

I have an usb wireless dongle and runnig it in ICS mode on my pc (Access Point mode). I used the connection wizard for wireless on ps3 in my room and everyting worked perfectly. Then i took the ps3 to the living room (7 meters away and still %80 signal strength) but this time ps3 couldn't connect to the internet (Couldn't obtain an ip adress).

What is the problem?

This is the dongle i have.
http://i53.tinypic.com/2na03nq.jpg
RTL8192CU chipset

Best regards