how can I stop losing internet connection while playing Madden09?

I have a sony playstation3 and am playing madden 09 online. Many times I have "lost connection with opponent" and am forced to end game and take a loss on my record. I have a broadband connection and hook my playstation3 directly to the internet with the cable that came with my machine. Are there different qualities of connection at the broadband level? Do I need a better cord? Do I need to shop for a better provider?I never have trouble with my connection while on my computer.