LTE Cell Scanner

Christian Buchner christian.buchner at gmail.com
Tue Aug 28 10:18:55 UTC 2012


A couple of suggestions for improvement of this tool:

- detect and report number of Tx antennas used by each cell (1,2 or
4). This should be detectable from the CRC part of the MIB.
- report whether the LTE system uses TDD or FDD.

I am surprised that today I find 4 cells on 796 MHz and 5 cells on 806
MHz. I did not expect this dongle to be so sensitive.

Detected the following cells:
C: CP type ; P: PHICH duration ; PR: PHICH resource type
CID      fc   foff RXPWR C nRB P  PR CrystalCorrectionFactor
388    796M   369h   -44 N  50 N one 0.99998386356929225283
449    796M   349h   -48 N  50 N one 0.9999838380560712725
389    796M   358h -48.3 N  50 N one 0.99998384936395678935
 52    796M   359h -49.2 N  50 N one 0.99998385073518580857

Detected the following cells:
C: CP type ; P: PHICH duration ; PR: PHICH resource type
CID      fc   foff RXPWR C nRB P  PR CrystalCorrectionFactor
108    806M   359h -42.3 N  50 N one 0.999983844979292269
372    806M   255h -42.9 N  50 N one 0.99998371629218352208
109    806M   215h -44.1 N  50 N one 0.99998366727140031163
235    806M   244h -44.6 N  50 N one 0.9999837021424591299
365    806M   849h   -48 N  50 N one 0.99998445366580002158

I would now like to log the received power for each cell ID in a log
file, and later plot it. I am interested how this power changes over
time, especially under varying weather conditions.

Christian




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