US Cable Support > Time Warner Cable TV/Voice > broadband vs wideband - latency difference

broadband vs wideband - latency difference

Latency is the same.

It is not new technology, just a combining of channels ofold technology.

Having multiple channels may help when the system is loaded as it reduces the impact of a single user.

if Latency was the same for one user doing one task,

what about one user doing two tasks?

would the fact that it's multiple channels (wideband)
mean each task may get balanced in order for both
enjoy nearly the same Latency as only one task would
on regular single channel broadband?

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a different question I ask is... now that the same system
had a bandwidth capacity increase so it could accommodate
wideband(multiple broadband) users, does that mean that
single channel broadband users have benefitted as well?
I recall reading articles about how TWCable recently bumped
most 7mb broadband customers to 10mb for free - could that
be cause they had to upgrade the whole network anyway
to accommodate wideband users since September here in NYC.

It is the responsibility of the User's computer to manage priorities. If it does not allocate bandwidth by task, then all tasks will compete for the bandwidth and the latency will be more or less the same for all.

Don't know about the second question.

thanks, I'm just trying to understand if the Latency needed
for two or more tasks would be reduced by using wideband.

for example i play a game on aDSL my ping(latency) stays
around 30ms, but if I stream a video while i'm playing a game
my ping may shoot up to 130ms, so will going from broadband
to wideband reduce my Latency for each task as I add more
tasks that require bandwidth to my ISP.

so on broadband I may go from say 50ms game to 150ms game+youtube
if i use wideband, will I still go from 50ms game to 150ms game+youtube
or will it be noticeably less, let's say 100ms game+youtube because
of the wider(multiple broadband) logic pipes.

That depends upon a lot of things. If there's not enough bandwidth in the downstream to accommodate the the responses for the game, then yes... that's going to result in a higher ping time. Adding more bandwidth to the downstream will help in that regard since you'll be able to stuff more data down the line.

Another thing you have to look at is the capabilities of your router. Some routers handle more data better than others, it depends upon the processing capabilities of the router. Some routers will slow down when you push a lot of data through it which will result in everything slowing down including data transfers. Remember, every packet your router handles it needs to process by making entries in the NAT table and modify the packet as required. This requires CPU power.

The channel bonding refers to DOCSIS 3.0 Channel Bonding. The idea is that in the past there was only one downstream channel for data on the cable line. This resulted in congestion on the node as more users are added to it or as more users download more data. The idea behind DOCSIS 3.0 Channel Bonding is that they can turn up more than one, often four or more channels for downstream data effectively making nearly 128 Mbps (4 channels) of downstream data. This makes it so that if one channel is saturated your downstream data can be pushed down another data path instead of facing slow download speeds.

This also makes it easier for the cable provider to upgrade nodes. In the past if a node was saturated they'd have to come and split the node. Now with DOCSIS 3.0 Channel Bonding all they'd have to do is make a few changes at the cable headend and CMTS and they can turn up more downstream channels thus instant and cheap node upgrade. Obviously it would be best to split the node but it at least allows for the customers to stop complaining and gives them more time to plan out a node split.
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Tom
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trparky - while your elaboration is very interesting,
it does not really answer my question directly

will multiple bandwidth tasks each enjoy better
Latency if I use wideband instead of broadband,

assuming the total download is half my service
is rated at, and my modem wired router is more
than capable of handling all the packet traffic.