Home speed and storage requirements

1. How fast must a wireless LAN connection be if it is to feed high-definition programming to a TV set?
2. How does that compare with today's wireless LAN technology for the home?
3. How much storage space would an hour of high-definition TV require?
4. How does that compare with the storage capacity of today's PCs?
5. How does it compare with the storage capacity of today's mobile devices?