iansltx
join:2007-02-19
Golden, CO
kudos:2 Reviews:
 ·Comcast
| reply to caco
Re: Verizon chiefs not thinking it through. They have to do testing first, I'm sure...
But if they offer 100/20 or (God forbid) 100/50 at the same price as 50/20 ow (entirely possible) Comcast has to go back to the drawing board; 3-channel DOCSIS 3 can only reach those speeds if nobody else is using the system, and only on multithreaded downloads. Since Comcast only has singlechannel upstream on their current DOCSIS 3 rolout, 20 Mbps is impossible to give 100% of the time.
Basically, when Verizon releases 100 Mbps FiOS, Comcast and all other providers transitioning to a 3/1 (D/U channel) D3 system are pwnd like n00bs. |
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patcat88
join:2002-04-05
Jamaica, NY
kudos:1 | said by iansltx:Basically, when Verizon releases 100 Mbps FiOS, Comcast and all other providers transitioning to a 3/1 (D/U channel) D3 system are pwnd like n00bs. Yep, 10 channel DOCSIS 3 (max the standard can do) is 380mbit per node. FIOS is 622 or 2500 mbit per node, with max 32 customers on 1 node. Uncomparable to DOCSIS 3. |
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Lazlow
join:2006-08-07
Saint Louis, MO | 8 channel is 340 down but only 123 up(per node). |
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patcat88
join:2002-04-05
Jamaica, NY
kudos:1 | said by Lazlow:8 channel is 340 down but only 123 up(per node). Its better to talk in marketing speak (download only) since thats all cable companies will advertise. |
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| said by patcat88:said by Lazlow:8 channel is 340 down but only 123 up(per node). Its better to talk in marketing speak (download only) since thats all cable companies will advertise. May be all that's advertised (by cable companies) but it's something that affects people's choices. |
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| reply to patcat88
said by patcat88:Yep, 10 channel DOCSIS 3 (max the standard can do) is 380mbit per node. FIOS is 622 or 2500 mbit per node, with max 32 customers on 1 node. Uncomparable to DOCSIS 3. Yes, if Verizon chose to use statistical multiplexing on their GPON systems (like DSL typically does), they could assign every home 2.4Gbps down and 1.2Gbps up (every home gets the full 2.4Gbps download datastream, and the updirection gets dynamically allocated slots). Even if statistical multiplexing had less aggressive multiplexing assumptions (probably a lot less agressive), the practical speeds would still be incredibly higher than current 50Mbps offerings. The "problem" probably would be what to do with all that bandwidth once it gets to the central office from it's entire area using this "insane" bandwidth. The backbones wouldn't be large enough for everybody going at once using a significant portion of their available last mile bandwidth.  |
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