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Big Brother is watching you



 
 
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  #31  
Old October 9th 04, 09:32 PM
John Henderson
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"John S." wrote:

how often does the phone
trasmit to the tower when in standby mode?


The phone does not send anything unless there are several
things that happen.

First, if the phone is moved from one cell site to the other,
it will identify itself to the new cell site so that call
delivery is quicker.


Only if the next cell has a different LAC (Location Area Code)
from the on already camped on. Registration is to an LAC, not
to an individual cell. This makes sense when you consider that
the paging for an incoming call is done over all cells within
an LAC. Registration with the correct LAC is absolutely
essential to the routing of incoming calls - it's not just a
matter of quicker delivery.

John
  #32  
Old October 10th 04, 12:57 PM
John S.
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Only if the next cell has a different LAC (Location Area Code)
from the on already camped on.


This used to be the case, however the cell phone's location is accounted for to
the cell site now for faster call delivery.

--
John S.
e-mail responses to - john at kiana dot net
  #33  
Old October 10th 04, 09:34 PM
John Henderson
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"John S." wrote:

Only if the next cell has a different LAC (Location Area Code)
from the on already camped on.


This used to be the case, however the cell phone's location is
accounted for to the cell site now for faster call delivery.


I can't believe that, unless each cell has its own unique LAC.
But then battery life would be absolutely atrocious with so
many location updates.

What's potentially slow about being paged by every cell in an
LAC? There are often hundreds of cells within each LAC where I
live. There's no location update done when switching cells
within an LAC, and paging takes a couple of seconds at most.

John
 




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