[srsran-users] UE on bladeRF not finding a EnodeB on ETTUS x300

[Philip Shaw]

Hi SRS



I have set up the ETTUS X300 with srsepc and enb.



I then start a BladeRF system as a UE I don't get a connection (no cell found).





Running pdsch_ue gives this output:



philip at philip-OptiPlex-3020M:~$ sudo

./srsLTE/build/lib/examples/pdsch_ue [adgpPoOcildFRDnruMNvTG] -f

773000000 -n 10 -r 1234

Opening RF device with 1 RX antennas...

Available RF device list: soapy  bladeRF

Trying to open RF device 'soapy'

Soapy has found device #0: backend=libusb, device=0x03:0x03,

driver=bladerf, instance=0, label=BladeRF #0 [effec06a..a699db6c],

serial=effec06a9812439dab05db07a699db6c,

Selecting Soapy device: 0

[INFO] bladerf_open_with_devinfo()

[INFO] bladerf_get_serial() = effec06a9812439dab05db07a699db6c

[INFO] setSampleRate(Rx, 0, 4.000000 MHz), actual = 4.000000 MHz

[INFO] setSampleRate(Tx, 0, 4.000000 MHz), actual = 4.000000 MHz

Setting up Rx stream with 1 channel(s)

Setting up Tx stream with 1 channel(s)

[INFO] setSampleRate(Rx, 0, 1.920000 MHz), actual = 1.920000 MHz

[INFO] setSampleRate(Tx, 0, 1.920000 MHz), actual = 1.920000 MHz

Available device sensors:

 - RFIC_TEMP

Available sensors for Rx channel 0:

 - PRE_RSSI

 - SYM_RSSI

State of gain elements for Rx channel 0 (AGC supported):

 - full: 71.00 dB

State of gain elements for Tx channel 0 (AGC not supported):

 - dsa: -10.00 dB

Rx antenna set to RX

Tx antenna set to TX

RF device 'soapy' successfully opened

Starting AGC thread...

Tunning receiver to 773.000 MHz

Searching for cell...

[INFO] setSampleRate(Rx, 0, 1.920000 MHz), actual = 1.920000 MHz

0 Found Cell_id:   0 FDD, CP: Normal  , DetectRatio= 0% PSR=0.00,

Power=-inf dBm

*Found Cell_id:   1 FDD, CP: Normal  , DetectRatio=100% PSR=7.63,

Power=58.4 dBm

 Found Cell_id:   0 FDD, CP: Normal  , DetectRatio= 0% PSR=0.00,

Power=-inf dBm

Decoding PBCH for cell 1 (N_id_2=1)

[INFO] setSampleRate(Rx, 0, 1.920000 MHz), actual = 1.920000 MHz

Setting sampling rate 5.76 MHz

[ERROR @ host/libraries/libbladeRF/src/backend/usb/libusb.c:1089]

Transfer timed out for buffer 0x565473458340

[INFO] setSampleRate(Rx, 0, 5.760000 MHz), actual = 5.760000 MHz

000000000000000000000000000000000[INFO] bladerf_close()

#overflows=34. Peak:      1.4, FrameCnt: 0, State: 0



Bye



Does this help in resolving why the UE does not see the enb?



Thank you for any help / guidance





Philip



On 10/01/2022 10:49, Andre Puschmann wrote:

> On 24/12/21 12:45, Philip Shaw wrote:

>> Hi Andre,

>>

>> Question: How do you set the UE PLMN number when using srsUE?  I have

>> srsEPC/ENB running on one system and srsUE running on another system,

>> but they never see each other.

>

> It's just the first digits in the IMSI in the ue.conf

>

> Cheers

> Andre

>

>>

>> The UE log is attached.

>>

>> Any ideas would be very much appreciated.

>>

>> Thank you!

>>

>> Philip

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