Instructions
Minimize the distance between your PSP and wireless modem or router. If possible, the router should be in the same room as the system. If this is not possible, make sure there no thick brick or concrete walls or heavy solid objects between the router and PSP; this can weaken the signal.
Minimize the effect of other devices or programs on your Internet connection by pausing or disabling these while you play. Using your PSP to connect to the Internet while other computers or devices are sharing the connection to download large files, stream audio or video or play other online games will weaken the strength and speed of the PSP&'s connection.
Simplify the connection between your Internet modem or receiver and the wireless router you use to transmit to your PSP. If you have a combination modem/wireless router, this is not necessary, but if you use separate devices to receive and transmit your Internet signal, make sure there are no relays, long wires or intermediary devices weakening the signal before it reaches the router.
Play at a different time. Danny Goulter, PSP salesman, explains: "ISPs (Internet Service Providers) experience a heavy volume of connections during the early evening when many users are home from work. This can result in a weaker connection for your PSP, even if you are the only one in your home or building using the connection." Try playing during the daytime or late at night to get a better connection.
Contact your ISP about upgrading your Internet speed. If your connection is less than 512 kbps (kilobytes per second), it is unsuitable for online play and should be upgraded or switched to an ISP that offers faster service.