[srslte-users] Having troubles to connect srsUE with srsENB

Saimanoj Katta saimanoj.katta at cumucore.com
Thu Jun 13 07:52:02 UTC 2019


Hi Justin and Mohammed,

Mohammed: Did you figure any solution for this? I am encountering the same
problem.
Justin:  In my case, the cell tries to decode the SIB1 and  MIB from the
eNB (I got this information from logs). I checked the UI console of eNB and
it doesn't have SIB1 configured. I am not able to add it either there. Any
suggestions on how to proceed? Radio level works correctly for me!

On further note, I tried to eNB and EPC on USRP and connect it via UE( real
mobile). I configured the IMSI, K, OPC in EPC db. The mobile could not
figure the created network either. Is something wrong with my setup of the
hardware?

I would appreciate any leads. Thank you very much for your time and
consideration

Here's my output in the radio level:
ubuntu at ubuntu-Zephyrus-GX501GI:~/srsLTE/build$ ./lib/examples/pdsch_ue -f
2680e6
Opening RF device with 1 RX antennas...
[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.
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
[INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D00000000000)
[INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1305 MB/s)
[INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1305 MB/s)
[INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD100000000001)
[INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD100000000001)
[INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0000000000000)
[INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0000000000000)
Starting AGC thread...
Tunning receiver to 2680.000 MHz
Searching for cell...
*Found Cell_id:  12 FDD, CP: Normal  , DetectRatio=100% PSR=7.37,
Power=-84.1 dBm
 Found Cell_id:   0 FDD, CP: Normal  , DetectRatio= 0% PSR=0.00, Power=-inf
dBm
 Found Cell_id:   0 FDD, CP: Normal  , DetectRatio= 0% PSR=0.00, Power=-inf
dBm
Decoding PBCH for cell 12 (N_id_2=0)
Setting sampling rate 23.04 MHz
Gtk-Message: 10:43:57.467: Failed to load module "canberra-gtk-module"
 - Type:            FDD   7,3, FrameCnt: 0, State: 1
 - PCI:             12
 - Nof ports:       2
 - CP:              Normal
 - PRB:             100
 - PHICH Length:    Normal
 - PHICH Resources: 1/6
 - SFN:             892
Decoded MIB. SFN: 892, offset: 0
          CFO: +626,52 Hz
         RSRP: +14,1 dBm |  +3,2 dBm
          SNR: +10,6 dB
           TM: 2
           Rb:   0,01 /   0,17 /   0,39 Mbps (net/maximum/processing)
   PDCCH-Miss:  0,00%
   PDSCH-BLER:  0,00%
         TB 0: mcs=6; tbs=176
         TB 1: mcs=0; tbs=0
Press enter maximum printing debug log of 1 subframe.

          CFO: +585,82 Hz
[DEBUG]:  ----  Receive 23040 samples  ----
[INFO]: SYNC TRACK: sf_idx=4, ret=1, next_state=1
          CFO: +565,50 Hz
[DEBUG]:  ----  Receive 23040 samples  ----
[INFO]: SYNC TRACK: sf_idx=7, ret=1, next_state=1
          CFO: +565,50 Hz
         RSRP: +13,1 dBm |  +3,2 dBm
          SNR: +10,6 dB
           TM: 2
           Rb:   0,08 /   0,18 /   0,78 Mbps (net/maximum/processing)
   PDCCH-Miss:  0,00%
   PDSCH-BLER:  0,00%
         TB 0: mcs=6; tbs=176
         TB 1: mcs=0; tbs=0
Press enter maximum printing debug log of 1 subframe.

          CFO: +565,50 Hz
         RSRP: +13,1 dBm |  +3,2 dBm
          SNR: +10,7 dB
           TM: 2
           Rb:   0,08 /   0,18 /   0,78 Mbps (net/maximum/processing)
   PDCCH-Miss:  0,00%
   PDSCH-BLER:  0,00%
         TB 0: mcs=6; tbs=176
         TB 1: mcs=0; tbs=0
Press enter maximum printing debug log of 1 subframe.

^Z
[5]+  Stopped                 ./lib/examples/pdsch_ue -f 2680e6

Regards,
Manu

On Thu, Jun 6, 2019 at 11:15 AM Justin Tallon <
justin.tallon at softwareradiosystems.com> wrote:

> Hey Mohammed,
>
> As a first step, why don't you try to receive your enb signal with a
> pdsch_ue  to ensure everything is working properly at a radio level.
>
> To do this cd to your build folder at your ue machine and run the
> following "./lib/examples/pdsch_ue -f <freq>"
>
> where <freq> is the downlink frequency of the enb you currently have
> running.
>
> Let me know what the output looks like.
>
> Regards,
>
> Justin
> ____
> Justin Tallon Ph.D.
>
> Software Radio Systems (SRS)
> http://www.softwareradiosystems.com
>
> +353-86-067-0753 | justin.tallon at softwareradiosystems.com
>
>
> On Thu, Jun 6, 2019 at 10:02 AM Mohammed Jabi <mohammed.jabi.mj at gmail.com>
> wrote:
>
>> Hi everyone,
>>
>> I am totally new to srsLTE and any help would be appreciated. I am trying
>> to connect srsue with srsenb. I have followed all steps described in the
>> github page but ue is not able to detect enb.
>>
>> I am using 2 BladeRFx40; one for ue and the other for enb. I am also
>> adopting the configuration provided without any changes. Both machines run
>> ubuntu 18.04.2 LTS and their CPUs are:
>> UE machine: Dual core Intel Core i7-4500U (-MT-MCP-) cache: 4096 KB
>>            clock speeds: max: 3000 MHz 1: 1151 MHz 2: 1101 MHz 3: 1078 MHz
>>            4: 1093 MHz
>> enB machine: Quad core Intel Core i7-3770 (-MT-MCP-) cache: 8192 KB
>>            clock speeds: max: 3900 MHz 1: 1774 MHz 2: 1922 MHz 3: 1797 MHz
>>            4: 1769 MHz 5: 1818 MHz 6: 2006 MHz 7: 1929 MHz 8: 1889 MHz
>>
>> You find attached log files when I run:  "sudo srsue
>> --log.all_level=info". When I run"
>> sudo srsenb --log.all_level=info", the enb.log is always empty. Below the
>> outputs in terminals:
>>
>> XXXXXXXXXXXXXXX
>> sudo srsepc
>>
>> Built in Release mode using commit 5343b33f on branch master.
>>
>>
>> ---  Software Radio Systems EPC  ---
>>
>> Reading configuration file /home/remi/.config/srslte/epc.conf...
>> HSS Initialized.
>> MME S11 Initialized
>> MME GTP-C Initialized
>> MME Initialized. MCC: 0xf001, MNC: 0xff01
>> SPGW GTP-U Initialized.
>> SPGW S11 Initialized.
>> SP-GW Initialized.
>> Received S1 Setup Request.
>> S1 Setup Request - eNB Name: srsenb01, eNB id: 0x19b
>> S1 Setup Request - MCC:001, MNC:01, PLMN: 61712
>> S1 Setup Request - TAC 7, B-PLMN 0
>> S1 Setup Request - Paging DRX 2
>> Sending S1 Setup Response
>> SCTP Association Shutdown. Association: 12
>> Deleting eNB context. eNB Id: 0x19b
>> Releasing UEs context
>> No UEs to be released
>> ^CDeleting UE context in HSS. IMSI: 001010123456780
>> Deleting UE context in HSS. IMSI: 001010123456789
>>
>> XXXXXXXXXXXXXXX
>> sudo srsenb --log.all_level=info
>>
>> Built in Release mode using commit 5343b33f on branch master.
>>
>> ---  Software Radio Systems LTE eNodeB  ---
>>
>> Reading configuration file /home/remi/.config/srslte/enb.conf...
>> Opening bladeRF...
>> Set RX sampling rate 1.92 Mhz, filter BW: 2.50 Mhz
>> Setting frequency: DL=2685.0 Mhz, UL=2565.0 MHz
>> set TX frequency to 2684999936
>> set RX frequency to 2564999936
>> Setting Sampling frequency 11.52 MHz
>> Set RX sampling rate 11.52 Mhz, filter BW: 10.00 Mhz
>>
>> ==== eNodeB started ===
>> Type <t> to view trace
>> ^CStopping srsENB... Press Ctrl+C 9 more times to force stop
>> Warning could not stop properly PHY
>> ---  exiting  ---
>>
>> XXXXXXXXXXXXXXX
>> sudo srsue --log.all_level=info
>> Reading configuration file /home/moe/.config/srslte/ue.conf...
>>
>> Built in Release mode using commit 5343b33f on branch master.
>>
>> ---  Software Radio Systems LTE UE  ---
>>
>> Opening 1 RF devices with 1 RF channels...
>> Opening bladeRF...
>> Set RX sampling rate 1.92 Mhz, filter BW: 2.50 Mhz
>> Waiting PHY to initialize...
>> ...
>> Attaching UE...
>> Searching cell in DL EARFCN=3400, f_dl=2685.0 MHz, f_ul=2565.0 MHz
>> set RX frequency to 2685000000
>> set TX frequency to 2565000000
>> Set RX sampling rate 1.92 Mhz, filter BW: 2.50 Mhz
>> ............................................^CStopping srsUE... Press
>> Ctrl+C 9 more times to force stop
>> .---  exiting  ---
>>
>> please let me if you do need any necessary additional files.  Thank you
>>
>>
>>
>>
>>
>>
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>>
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