Ps3 online problems!!!!!!?

when i try to play with friends online, i get ';this game session is no lopnger availble'; what is it. it happends on every game. all the time... HOW TO FIX PLEASE!Ps3 online problems!!!!!!?
Are you playing quick ranked matches?





If yes, then it's almost certainly router/ISP related. Peer to peer games such as FIFA ( in the case of 1v1 ) don't have a lot of control over the success of establishing peer to peer connections. It's generally up to the compatibility of the two users routers and the method by which p2p connections are established. The first FIFA has no control over, the second is handled by Microsoft on Xbox 360 ( Xbox live traffic is encrypted, and connection establishment is handled by their system API's ). The Ps3 is slightly different, but there will always be problems with whatever method FIFA uses to establish p2p connections. See below for a link to one of the most common and robust connection establishment methods, that only worked on 84% of routers @ 2005 ( I think ). Assuming a uniform distribution of router brands ( not likely but whatever ), then 29% (1 - 0.84*0.84) of all matchups would fail to work!





Here's a nice little article talking about NAT issues. ( I wish they had dated the article, but based on the references I assume it's 2005 )


Peer-to-Peer Communication Across Network Address Translators





Here's an important excerpt:


';This paper documents and analyzes one of the simplest but most robust and practical NAT traversal techniques, commonly known as “hole punching.” Hole punching is moderately well-understood for UDP communication, but we show how it can be reliably used to set up peer-to-peer TCP streams as well. After gathering data on the reliability of this technique on a wide variety of deployed NATs, we find that about 82% of the NATs tested support hole punching for UDP, and about 64% support hole punching for TCP streams. As NAT vendors become increasingly conscious of the needs of important P2P applications such as Voice over IP and online gaming protocols, support for hole punching is likely to increase in the future. ';





Network programmers will know most real-time games use UDP ( usually building reliability and fragmenting into a layer above it ), and FIFA is no exception.





If your ISP gives you an public IP address, then you can always solve your problem by connecting your cable/dsl modem straight to your console. If you still get connection problems it's something you should get your ISP to look into.