If your PS3 is connected wireless to your home network, please check the RFProtect settings for your Remote-AP.
We have seen issues where rogue-protection was enabled on remote-AP's, when the RAP is plugged in to the home network, it will define your home SSID as a rogue AP, and start kicking clients of your home network as they are connected to a 'rogue' AP.
Be vary careful with the Wireless IDS protection settings on remote-AP's as these are in general placed in environments where you have a rogue-ap. Your home network connects the wired to the air, which is the definition of a rogue AP.
You may also check your controller and override the classification for your home router as known interfering.