WiFI on utility poles

Thu Sep 10 17:37:03 UTC 2015

Really Comcast? Your spam software SUCKS ASS!

For those interested, the word that violated their spam software was "damn"

-Mike

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Subject: Re: WiFI on utility poles

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On Thu, Sep 10, 2015 at 10:32 AM, Mike Lyon <mike.lyon at gmail.com> wrote:

> A few dozen? Damn, you are lucy, Mike!
>
> I did an install the other day, a good 60-70 XfinityWifi SSIDs popped up.
>
> Reminds me of the Good 'Ole CB days back in the 80's where everyone talked
> over each other and played background music and such...
>
> That's a big 10-4 and I got a Smokey on my trail!
>
> -Mike
>
> On Thu, Sep 10, 2015 at 10:15 AM, Mike Hammett <nanog at ics-il.net> wrote:
>
>> The tower-deployed AP can see the cable wireless APs for miles and can
>> see a few dozen of them at any one time. Given the goal of full modulation
>> at all times for optimal use of spectrum and dollars, the ever increasing
>> noise from the cable APs makes this a challenge. You need 25 to 30 dB to
>> maintain full modulation and that's increasingly difficult when you hear
>> cable APs everywhere at -70.
>>
>> The APs can't have narrow radiation patterns given that they need to
>> cover a roughly 90* area of where the customers are. An 18 to 20 dB gain
>> sector antenna will pick up those cable radios from pretty far away.
>>
>>
>>
>>
>> -----
>> Mike Hammett
>> Intelligent Computing Solutions
>> http://www.ics-il.com
>>
>>
>>
>> Midwest Internet Exchange
>> http://www.midwest-ix.com
>>
>>
>> ----- Original Message -----
>>
>> From: "Scott Helms" <khelms at zcorum.com>
>> To: "Jared Mauch" <jared at puck.nether.net>
>> Cc: "Mike Hammett" <nanog at ics-il.net>, "Corey Petrulich" <
>> Corey_Petrulich at cable.comcast.com>, "Kenneth Falkenstein" <
>> Ken_Falkenstein at cable.comcast.com>, "NANOG mailing list" <nanog at nanog.org
>> >
>> Sent: Thursday, September 10, 2015 10:00:41 AM
>> Subject: Re: WiFI on utility poles
>>
>>
>> This sounds like a hypothetical complaint, AFAIK none of the members of
>> the CableWiFi consortium are deploying APs outside of their footprint.
>> Since most of the APs use a cable modem for their backhaul it's not really
>> feasible to be without at least one broadband option (the cable MSO) and be
>> impaired by the CableWiFi APs.
>>
>>
>> Now, there is one potential exception to this I'm aware of which is
>> Comcast's Xfinity on Campus service, but I'd expect the number of colleges
>> they're servicing that aren't already getting cable broadband service to
>> approach zero.
>>
>>
>>
>> http://www.philly.com/philly/business/20150909_Comcast_streams_onto_college_campuses.html
>>
>>
>>
>> https://xfinityoncampus.com/login
>>
>>
>>
>>
>>
>> Having said all of that, I'd agree that a good radio resource management
>> approach would benefit all of us, including the CableWiFi guys.
>>
>>
>> http://www.cablelabs.com/wi-fi-radio-resource-management-rrm/
>>
>>
>>
>>
>>
>>
>>
>> Scott Helms
>> Vice President of Technology
>> ZCorum
>> (678) 507-5000
>> --------------------------------
>> http://twitter.com/kscotthelms
>> --------------------------------
>>
>>
>> On Thu, Sep 10, 2015 at 10:52 AM, Jared Mauch < jared at puck.nether.net >
>> wrote:
>>
>>
>>
>> > On Sep 10, 2015, at 9:00 AM, Mike Hammett < nanog at ics-il.net > wrote:
>> >
>> > 5 GHz noise levels affecting people whose primary means of Internet
>> access is via fixed wireless .
>> >
>>
>> This is a huge deal for those people like myself that depend on fixed
>> wireless for access at home because there is no broadband available despite
>> incentives given by cities and states and the federal government.
>>
>> The local WISPs are good at coordinating access in these ISM bands
>> amongst themselves but when someone appears with a SSID without doing a
>> peek at the spectrum (note: not a site survey, but actual spectrum view w/
>> waterfall, as site survey only checks for the channel width that the client
>> radio is configured for, not al the 10, 15, 8, 30mhz wide variants).
>>
>> It’s just poor practice to show up and break something else because you
>> can’t be bothered to notice the interference or noise floor you created. I
>> suspect the hardware that Comcast is using doesn’t notice this interference
>> or adjacent channel issues. With the FCC aiming to let cell carriers also
>> clog the 5ghz ISM band it’s only going to get worse.
>>
>> - Jared
>>
>>
>>
>>
>
>
> --
> Mike Lyon
> 408-621-4826
> mike.lyon at gmail.com
>
> http://www.linkedin.com/in/mlyon
>
>
>
>

-- 
Mike Lyon
408-621-4826
mike.lyon at gmail.com

http://www.linkedin.com/in/mlyon