Hi Drasko
I am not so sure why you are not succeeding in recording anything in wireshark. From what I have seen from your other posts you are doing it the right way. Well, here is what should happen anyway:
1) The phone measures the receive power of all the channels it can handle unless you specified to stick to a specific channel in the mobile application. 2) The channels with the highest receive power are most likely to be beacon carriers. So the phone will try to synchronize in frequency and time to such a carrier. The synchronization in time will retrieve the current frame number und the BSIC of the base station. 3) If the synchronization is successfull, the phone will monitor various logical channels on the beacon carrier: The broadcast control channel (BCCH), common control channel (CCCH) and the paging channel (PCH) (and maybe some more, I am not so sure). The packets received on these channels will be dumped on wireshark or whatever you are using. As soon as all system information (SI) messages from BCCH are decoded, the phone can camp on this cell.
In order to achieve this you need osmocon, mobile and wireshark to be running.
Hope this helps Ben
Quoting "Drasko DRASKOVIC" drasko.draskovic@gmail.com:
On Mon, May 30, 2011 at 8:56 AM, weberbe@ee.ethz.ch wrote:
As this is all you want just use the signal from any commercial BTS in your area. OsmocomBB is able to capture System Information Messages and Paging Requests and forward the content to Wireshark.
Hi weberbe, can you explain in some more details how this can be done ?
So far I did not succeed to attach to any cell, not to get some packets from it.
At which moment can we observe the packets which are coming :
- During the initial measurements or
- Only after we attach to a cell
What should be set up, what applications run and in which order to obtain some packet logging in Wireshark.
I am running master branch - so, no SIM working.
Best regards, Drasko