Whats wrong with my PS3 online connection (time out!)?

ok i love rock band! itz so fun to play with people round the world but just a few days after getting online i went to sign in yesterday and the thing took like 20mins to tell me ';Playstation Network has timed out'; and i kept trying over and over and over again! now im not one of those people who stays home all day but when friends come over we need to play some skate. on my PS3! Can any1 tell me how to make it stop saying Playstation Network timed out and so i can get online?Whats wrong with my PS3 online connection (time out!)?
The message ';Playstation Network has timed out'; is generic in nature and doesn't mean much other than the obvious: your PS3 is not connecting to the net. Check your IP settings to see that you have an ip address. Also check to see your ethernet cable port is flashing it's light (to see that you have physical connection). Often times the router is not issuing an IP address to your PS3. If you have a computer attached to the router, check to see if the computer is online. Sorry so many answers but your error message is very general.Whats wrong with my PS3 online connection (time out!)?
maybe it is your router try resetting your router and try again or disconnect your PS3 from your router and reconnect it