[82309] in North American Network Operators' Group
Re: London incidents
daemon@ATHENA.MIT.EDU (Michael.Dillon@btradianz.com)
Tue Jul 12 06:53:16 2005
In-Reply-To: <20050712025755.13A7D3BFE8D@berkshire.machshav.com>
To: nanog@merit.edu
From: Michael.Dillon@btradianz.com
Date: Tue, 12 Jul 2005 11:48:38 +0100
Errors-To: owner-nanog@merit.edu
This is a multipart message in MIME format.
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> http://networks.silicon.com/mobile/0,39024665,39150177,00.htm
> has what Sean was referring to.
> >> UK Government officials deny they shutdown any cell phone service.
In London, the mobile operators do not provide any service
anywhere in the London underground network. The only place
that I know of where there is service is on the Heathrow
Express platforms at Heathrow but that is technically not
part of the London underground. Outside of Central London
the lines run aboveground and there is obviously mobile
coverage in those areas. Also, some of the lines run in shallow
tunnels, sometimes little more than uncovered trenches and
so there are areas where the signal from local cells does
penetrate into the trains.
There has been some talk recently of setting up microcells
inside the tunnels to give mobile coverage throughout the
system as is found in other countries. I wonder if this will
now be reconsidered.
There are always tradeoffs when building infrastructures
of any type. Like the requirement for generator capacity
at 60 Hudson versus the desire of Tribeca residents to
not live next door to a fuel dump.
--Michael Dillon
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<br><font size=2><tt><br>
> http://networks.silicon.com/mobile/0,39024665,39150177,00.htm<br>
> has what Sean was referring to.<br>
> >> UK Government officials deny they shutdown any cell phone
service.<br>
</tt></font>
<br><font size=2><tt>In London, the mobile operators do not provide any
service </tt></font>
<br><font size=2><tt>anywhere in the London underground network. The only
place </tt></font>
<br><font size=2><tt>that I know of where there is service is on the Heathrow</tt></font>
<br><font size=2><tt>Express platforms at Heathrow but that is technically
not</tt></font>
<br><font size=2><tt>part of the London underground. Outside of Central
London</tt></font>
<br><font size=2><tt>the lines run aboveground and there is obviously mobile</tt></font>
<br><font size=2><tt>coverage in those areas. Also, some of the lines run
in shallow</tt></font>
<br><font size=2><tt>tunnels, sometimes little more than uncovered trenches
and</tt></font>
<br><font size=2><tt>so there are areas where the signal from local cells
does</tt></font>
<br><font size=2><tt>penetrate into the trains. </tt></font>
<br>
<br><font size=2><tt>There has been some talk recently of setting up microcells</tt></font>
<br><font size=2><tt>inside the tunnels to give mobile coverage throughout
the</tt></font>
<br><font size=2><tt>system as is found in other countries. I wonder if
this will</tt></font>
<br><font size=2><tt>now be reconsidered.</tt></font>
<br>
<br><font size=2><tt>There are always tradeoffs when building infrastructures</tt></font>
<br><font size=2><tt>of any type. Like the requirement for generator capacity</tt></font>
<br><font size=2><tt>at 60 Hudson versus the desire of Tribeca residents
to</tt></font>
<br><font size=2><tt>not live next door to a fuel dump.</tt></font>
<br>
<br><font size=2><tt>--Michael Dillon</tt></font>
<br><font size=2><tt><br>
</tt></font>
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