connect ipad to sony tv over wi fi

That will probably not be possible unless you purchase an Apple TV to connect to your Sony. I'm not aware of any Sony television that supports AirPlay.

By the way, you normally will get the quickest and most informative reponses if you ask a full question rather than just making a short statement as you did here.

Regards.

Use Apple TV to connect your iPad to the Sony TV

http://store.apple.com/sg/browse/home/shop_ipod/family/apple_tv

And if you don't want to get an Apple TV, then you will have to connect your iPad to the TV via a cable.

AV cable http://store.apple.com/us/product/MC748ZM/A/apple-composite-av-cable

Using Apple TV device is best because you are not limited by cable connection or length.

 Cheers, Tom 😉