 bbeesleyVIP
join:2003-08-07
Richardson, TX
kudos:5 | reply to majortom1029
Re: pipe said by majortom1029:At what point does it become easier just to give every home one big internet pipe and have the tv, internet , and phone go through that instead of splitting everything into channels?
because the transmission medium is Coax, they PHY layer will generally specify a radio frequency mechanism. In the US this is NTSC 6Mhz channels because that is what television used to be. The channels are now commonly modulated digitally using QAM but they are still 6Mhz.
said by majortom1029:Cablevisions ipad and iphone app already does this . Just bond the channels in such a way that every house gets a symetrical conenction and the cablemodem per se handles all the routing for voice,data,and tv.
These IP based aps are still using cable modems which are DOCSIS based and are likely bonding 6Mhz carriers.
This isn't a bad thing, bonding of smaller rate channels exists within most networking technologies, both optical and electrical, to some degree and as your Cablevision example provides, is transparent to your home network.
Lastly, your Cablevision example is currently being developed in a CableLabs standard known as "Converged Cable Access Platform" or CCAP. It still uses 6Mhz QAM carriers but all of the video traffic becomes IP much like the Voice and Data traffic already is.
See »www.motorola.com/staticfiles/Vid···S-EN.pdf for an easy to understand run-down and »www.cablelabs.com/specifications···0809.pdf for more exacting technical details. |
| Cablelabs is developing a channel less standard, well atleast looking into it. IEEE is developing an ethernet over coax standard also.
Anyway with ccap it would allow a much bigger data pipe right ? Since it will free up all the channels for data . |
