Broadcast television in an IP world

K. Scott Helms kscotthelms at gmail.com
Tue Nov 21 14:58:38 CST 2017


Luke,

I think I understand your example but the local broadcaster won't usually
(ever?) have the rights to retransmit the Super Bowl over IP.

Having said that, what you're describing is exactly what happens already
(without multicast) via multiple CDNs.  Multicast across the internet isn't
feasible (economically) today.  Multicast inside of an organization
certainly is and is very common.  Having said that, even popular content is
surprisingly sparse (when we look at flows) and even inside of edge
networks (DOCSIS, FTTH, xDSL, etc) it can be surprisingly challenging to
make the math work.  As soon as someone wants to pause the "big game" or
flips to another channel you now have to move their flow to unicast.  Even
when lots of people are watching the same event the economics aren't as
compelling as they might appear initially.


On Tue, Nov 21, 2017 at 9:29 AM, Luke Guillory <lguillory at reservetele.com>
wrote:

> The comment I was originally replying to was the following. I’ve said edge
> resources, nothing about WAN.
>
> The content provider (lets say local TV station that broadcasts the
>
> Superbowl) can just unicast to the ISP a single stream, and give the
>
> ISPs some pizza sized box (lets call it an "Appliance") and that box
>
> then provides unicast delivery to each customer watching the Superbowl.
>
>
>
>
>
> *Sent from my iPhone*
>
> On Nov 21, 2017, at 8:22 AM, K. Scott Helms <kscotthelms at gmail.com> wrote:
>
> It's not helpful for saving resources in DOCSIS (nor any other) edge
> networks.  The economics mean that, as bits get sold in the US and many
> other places, it won't be in the foreseeable future.  Customers care about
> popular video sources.  Popular content sources have CDNs with local nodes
> and/or direct (low cost) connections to their CDN.  That's far more
> efficient than allowing multicast across WAN links.
>
> K. Scott Helms
>
>
>
> Luke Guillory
> Vice President – Technology and Innovation
>
>
> <http://www.rtconline.com>
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> Email: lguillory at reservetele.com
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>
>
>
>
>
> *Disclaimer:*
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> On Tue, Nov 21, 2017 at 8:58 AM, Luke Guillory <lguillory at reservetele.com>
> wrote:
>
>> I’m not paying anything for local resources with regards to local edge
>> delivery, that’s capital expenditures not MRCs.
>>
>> Our edge networks aren’t unlimited or free, so while it’s not costing me
>> on the transit side there still are cost in terms of upgrades and so on.
>>
>> My point is that In some networks such as docsis conserving edge
>> resources can be helped with multicast.
>>
>>
>>
>> Sent from my iPhone
>>
>> On Nov 21, 2017, at 4:12 AM, Baldur Norddahl <baldur.norddahl at gmail.com
>> <mailto:baldur.norddahl at gmail.com>> wrote:
>>
>> Den 21. nov. 2017 00.42 skrev "Luke Guillory" <lguillory at reservetele.com
>> <mailto:lguillory at reservetele.com>>:
>>
>> Why would an ISP not want to conserve edge resources? If I’m doing iptv
>> I’m
>> better off doing multicast which would conserve loads of BW for something
>> popular like the Super Bowl. Especially if I’m doing this over docsis.
>>
>>
>>
>> You pay for 95th percentile. If that is decided by everyone watching Game
>> of Thrones one day, then using the same resources for Super Bowl the next
>> day will be for free.
>>
>>
>>
>>
>> Luke Guillory
>> Vice President – Technology and Innovation
>>
>>
>>         [cid:imagef9b835.JPG at 242ea556.429501f5] <http://www.rtconline.com
>> >
>>
>> Tel:    985.536.1212
>> Fax:    985.536.0300
>> Email:  lguillory at reservetele.com
>> Web:    www.rtconline.com
>>
>>         Reserve Telecommunications
>> 100 RTC Dr
>> <https://maps.google.com/?q=100+RTC+Dr+%0D+Reserve,+LA+70084&entry=gmail&source=g>
>> Reserve, LA 70084
>>
>>
>>
>>
>>
>> Disclaimer:
>> The information transmitted, including attachments, is intended only for
>> the person(s) or entity to which it is addressed and may contain
>> confidential and/or privileged material which should not disseminate,
>> distribute or be copied. Please notify Luke Guillory immediately by e-mail
>> if you have received this e-mail by mistake and delete this e-mail from
>> your system. E-mail transmission cannot be guaranteed to be secure or
>> error-free as information could be intercepted, corrupted, lost, destroyed,
>> arrive late or incomplete, or contain viruses. Luke Guillory therefore does
>> not accept liability for any errors or omissions in the contents of this
>> message, which arise as a result of e-mail transmission.
>>
>>
>


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