[srslte-users] SRS UE connecting to commercial network

Andre Puschmann andre.puschmann at softwareradiosystems.com
Tue Jun 11 07:49:10 UTC 2019


Hey,

for a 100 PRB cell make sure you run as superuser to set scheduling
correctly. To check your actual issue, please send logs along (set log
level to info for all layers).

Cheers
Andre

On 7/6/19 13:44, Saimanoj Katta wrote:
> Hi,
> 
> I will be using the srsLTE UE code with USRP X310 to connect to a
> commercial enB and EPC.
> When I run the command srsue   --rf.dl_earfcn  3350 to detect the eNB, I
> get the following error(pasted below).  What are the values rv_idx and
> cb_idx. How can I rectify them?
> 
> Furthermore, what parameters need to be changed in UE code so that eNB
> can detect it?
> From my understanding, IMSI, K, OPC values could be changed in the
> configuration file. I cannot understand how to change other
> parameters(if required!
> 
> Reading configuration file /home/ubuntu/.config/srslte/ue.conf...
> 
> Built in Release mode using commit 5343b33f on branch master.
> 
> ---  Software Radio Systems LTE UE  ---
> 
> Error: could not create log file, no messages will be logged!
> Opening 1 RF devices with 1 RF channels...
> [INFO] [UHD] linux; GNU C++ version 7.4.0; Boost_106501;
> UHD_3.15.0.git-1-gf83faf28
> [INFO] [LOGGING] Fastpath logging disabled at runtime.
> Warning: Failed to create thread with real-time priority. Creating it
> with normal priority: Success
> Warning: Failed to create thread with real-time priority. Creating it
> with normal priority: Success
> Warning: Failed to create thread with real-time priority. Creating it
> with normal priority: Success
> Warning: Failed to create thread with real-time priority. Creating it
> with normal priority: Success
> Opening USRP with args: type=x300,master_clock_rate=184.32e6
> [INFO] [X300] X300 initialization sequence...
> [INFO] [X300] Maximum frame size: 1472 bytes.
> [INFO] [X300] Radio 1x clock: 184.32 MHz
> [INFO] [GPS] Found an internal GPSDO: LC_XO, Firmware Rev 0.929a
> Waiting PHY to initialize...
> ...
> Attaching UE...
> Searching cell in DL EARFCN=3350, f_dl=2680.0 MHz, f_ul=2560.0 MHz
> .
> Found Cell:  Mode=FDD, PCI=12, PRB=100, Ports=2, CFO=0.0 KHz
> Invalid inputs rv_idx=-1, cb_idx=20
> /home/ubuntu/srsLTE/lib/src/phy/phch/sch.c.343: Error in rate matching
> 
> Regards,
> Manu
> 
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