[Catchercatcher] Identifying a cather

Karsten Nohl nohl at virginia.edu
Thu Jan 26 20:57:38 CET 2012


Andreas:

Thanks a lot -- very good additions!

Both were added to the Wiki [1] and will appear in the next Catcher release.

Cheers,

     -Karsten

[1] https://opensource.srlabs.de/projects/catcher/wiki/Wiki

On Jan 26, 2012, at 17:28 , Andreas Eversberg wrote:

> hi,
> 
> i have some more hints to identify a catcher. i have missed them in the
> wiki's list.
> 
> - a catcher has no neighbour cells. every regular cell (except test
> network) have one or more.
> 
> - a catcher uses a high CRO (cell reselection offset). an offset up to
> 126 db makes a neighbour cell (catcher) +126 db "better" than the actual
> receive level from the catcher. a better cell is then selected by the
> phone, because "rx(cather)+CRO > rx(regual cell)+CRH". (CRH is used when
> changing location areas. it is generally set to 6db.)
> 
> regards,
> 
> andreas
> 
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