Search:  

 
 
   All ForumsHot TopicsGallery






how-to block ads


 
Forums » AT&T Exploring HDTV Over 802.11n
Search Topic:
view: topics flat text 
Post a:

Comments on news posted 2009-05-15 12:36:33: It looks like AT&T is seriously exploring the use of 802.11n wireless connections to beam HD video around the home, potentially shaving hours (or at least minutes) off of a typical U-Verse install. ..

page: 1 · 2 · 3
AuthorAll Replies


jchambers28

join:2007-05-12
Alma, AR

1 edit
wireless networking

that's some crazy shit I am doing that here and it don't work that great. there goes your 1080i


gigahurtz
Premium
join:2001-10-20
Palm Coast, FL
clubs:
This would be interesting..

I like that AT&T is exploring different options. It's unusual that a company like AT&T would move away from "traditional means". When times are tough, even the giants move away from their normal ways. I am interested to see how this turns out.


NOCMan
Verizon Fios User
Premium
join:2004-09-30
Flower Mound, TX

It will not work once density increases in a neighborhood

Eventually there will be oversaturation of the wifi channels and everyone's speeds will go in the crapper. Here the b/g channels are like a jungle now and speeds suck. 2-3 years ago used to be 3 AP's in my area, now there are over 30 showing up.
--
Play a Death Knight?
www.theebonhold.com

Mr Matt

join:2008-01-29
Eustis, FL
 How about some new frequency assignments for data!

It is time for new frequency assignments for home networking. Why not some 700MHz, some 1.9GHz or some white space frequencies assigned for home networking!


anonym

@rochester.edu

HomePNA

I've found wireless to be VERY unreliable in terms of bridging points around the house. The average throughput was adequate, but the instantaneous transfer was highly variable. Neighbor turns on a microwave, switches on their baby monitor, or picks up their 2.4GHz cordless phone, and your movie is done! Even with a fair amount of buffering (which takes time while seeking), you would always have a few hiccups. Furthermore, even 802.11n does not have the bandwidth to stream more than 1-2 HD streams over more than a few ft. From my experience, I seriously doubt this will be a viable solution for most people, especially those in urban areas.

I've never used homepna equipment, but the coax moca bridges I have (nim-100's) are bulletproof. They run internally at 254mbits even over half a dozen splitters and REALLY crappy coax in my house. They introduce only about 5 ms of latency, and I can pull the full 100Mbits out of the ethernet port.


TKJunkMail
Enjoy the sun
Premium
join:2002-03-03
Avalon, NJ
·Sprint Mobile Broa..
·Comcast

 Ruckus 802.11n connectivity diagram

Info on the Ruckus system:
»www.ruckuswireless.com/products/···0-series

This is what the connectivity diagram looks like:
»www.ruckuswireless.com/images/fe···vity.png


funchords
Hello
Premium,MVM
join:2001-03-11
Washington, DC
·Verizon Online DSL
·Skype

I hope they're using 5.8 GHz...

The best parts of 802.11n simply won't work on 2.4 GHz networks along side other 802.11b/g networks, cordless phones, baby monitors, security systems, AV setups, and etcetera. That gloriously generalized statement happens to be true for over 95% of the population. Sure, they can set their APs to ignore interference and force bonding and phasing, but when they do that, then they're the cause of interference.

I hope they're planning on using 5.8 GHz for this.
--
Robb Topolski -= funchords.com =- District of Columbia -- KJ7RL


TKJunkMail
Enjoy the sun
Premium
join:2002-03-03
Avalon, NJ
·Sprint Mobile Broa..
·Comcast

said by funchords See Profile :

I hope they're planning on using 5.8 GHz for this.
Their web site says they are using the 5GHz band.


Matt
Take me down to the paradise city
Premium
join:2003-07-20
Jamestown, NC
·North State Commun..

reply to jchambers28
Re: wireless networking

said by jchambers28 See Profile :

that's some crazy shit I am doing that here and it don't work that great. there goes your 1080i
I agree. I tried it as well and it was awful. I was only going through one floor and about 15 feet maybe. The issue was the reliability of the connection, not the max throughput that could be achieved. I eventually replaced the bridges with Motorola NIM-100 MoCA bridges and see a solid 100Mbps all day.

I could hit 280Mbps (802.11n Draft 2.0) but every 2-3 minutes the signal would get muddled and the rate would drop, causing a video pause. Actually, when the rate had to change at all, either decrease due to a interference and then when it cleared up and increased the rate again, I'd would experience problems. The 5GHz spectrum would help, so I hope they are deploying it there.


Matt
Take me down to the paradise city
Premium
join:2003-07-20
Jamestown, NC
·North State Commun..

reply to TKJunkMail
Re: I hope they're using 5.8 GHz...

said by TKJunkMail See Profile :

said by funchords See Profile :

I hope they're planning on using 5.8 GHz for this.
Their web site says they are using the 5GHz band.
That should eliminate a lot of the issues. I hope they figure out a buffering system that isn't sensitive to the radio changing it's transmission rate too.


Hookem99
Deep In The Heart

join:2007-07-18
Pflugerville, TX
4-6?

'The MediaFlex 7000 device manual says it can support four to six MPEG-4 HDTV IPTV streams running at 10 Mbit/s each.'

To bad at&t itself only supports 2!


cornelius785_nli

@WPI.EDU
uh, what about WATCHING a recorded show?


en102
Canadian, eh?

join:2001-01-26
Valencia, CA
·RoadRunner Cable
·DSL EXTREME

reply to Matt
Re: wireless networking

Personally, I'd rather use Ethernet over powerline (Netgear HDX-101 or newer).
I typically have ~100mbps to almost any outlet in my house (100mbps port, so ~70mbps throughput).
The only issue occurs when there's something with a high load (microwave oven, vacuum, hairdryer).


funchords
Hello
Premium,MVM
join:2001-03-11
Washington, DC
·Verizon Online DSL
·Skype

reply to Matt
Re: I hope they're using 5.8 GHz...

said by Matt See Profile :

said by TKJunkMail See Profile :

said by funchords See Profile :

I hope they're planning on using 5.8 GHz for this.
Their web site says they are using the 5GHz band.
That should eliminate a lot of the issues. I hope they figure out a buffering system that isn't sensitive to the radio changing it's transmission rate too.
That should happen at two different levels of the stack, although if the radio takes too long, there is nothing the application can actually do about it.
--
Robb Topolski -= funchords.com =- District of Columbia -- KJ7RL


dslwanter
Why would I want DSL? I have FTTH
Premium
join:2002-12-16
Lowellville, OH
·Armstrong Zoom In..
·AT&T Midwest

reply to jchambers28
Re: wireless networking

said by jchambers28 See Profile :

that's some crazy shit I am doing that here and it don't work that great. there goes your 1080i
Never 1080i anyway. It's all compressed. But AT&T would do something like this.

AT&T= You're world, our way.
--
Check our my internet radio station: »www.thebomb102.com, featuring new music and hits of the millennium, powered by FTTH!

MyDogHsFleas
Premium
join:2007-08-15
Austin, TX
·AT&T U-Verse
·AT&T Southwest

reply to Hookem99
Re: 4-6?

said by Hookem99 See Profile :

'The MediaFlex 7000 device manual says it can support four to six MPEG-4 HDTV IPTV streams running at 10 Mbit/s each.'

To bad at&t itself only supports 2!
actually the in-home network has to support more than that. The DVR can record two streams and also be playing back streams to other TV STBs via the Whole Home DVR feature, at the same time.

MyDogHsFleas
Premium
join:2007-08-15
Austin, TX
·AT&T U-Verse
·AT&T Southwest

HomePNA *or* Ethernet for in-home network

quote:
Karl Bode said: AT&T currently uses HomePNA technology for in-home networking.

This is incorrect. They use either HomePNA or straight Ethernet over Cat5/5e/6, or a mixture of the two. The installers prefer Ethernet if the cabling is available.


jchambers28

join:2007-05-12
Alma, AR
reply to en102
Re: wireless networking

720P would be the highest quality achieved nothing more.


Matt
Take me down to the paradise city
Premium
join:2003-07-20
Jamestown, NC
·North State Commun..

reply to en102
said by en102 See Profile :

Personally, I'd rather use Ethernet over powerline (Netgear HDX-101 or newer).
I typically have ~100mbps to almost any outlet in my house (100mbps port, so ~70mbps throughput).
The only issue occurs when there's something with a high load (microwave oven, vacuum, hairdryer).
The MoCA devices are much simpler and offer higher throughput. There is ZERO configuration required, you just plug them in and go. They are also not sensitive to load on the coax. As the other poster said, I see a solid 100Mbps all day long.


Matt
Take me down to the paradise city
Premium
join:2003-07-20
Jamestown, NC
·North State Commun..

reply to dslwanter
said by dslwanter See Profile :

said by jchambers28 See Profile :

that's some crazy shit I am doing that here and it don't work that great. there goes your 1080i
Never 1080i anyway. It's all compressed. But AT&T would do something like this.
Resolution has nothing to do with compression. You can have 1080i at 1Mbps if you want to. You won't be able to make out what is in the video, but it's still technically video.
Forums » AT&T Exploring HDTV Over 802.11npage: 1 · 2 · 3


Wednesday, 09-Dec 13:50:00 Terms of Use | Privacy Policy | Hosting by www.nac.net - DSL,Hosting & Co-lo | feedback | contact
over 10 years online! © 1999-2009 dslreports.com.
page compression OFF