[srslte-users] SRS UE connecting to commercial network

Tue Jun 25 13:13:34 UTC 2019

Hi Saimanoj,

Thanks for sharing your log. I see now that the Format1C issue is fixed.

The problem that you have now is with real-time. Make sure you run the UE
as sudo.

On Mon, 24 Jun 2019 at 14:53, Saimanoj Katta <saimanoj.katta at cumucore.com>
wrote:

> Hello Ismael,
>
> Thank you for notifying me and noticing the bug. I compiled the code and
> tested it. There is huge improvement in the detection of the PLMN. However,
> issue still persists.
>
> 1) I did execute the Pdsch option first for a clean signal. It does. Next,
> the code does not detect the PLMN automatically.
> 2) I changed the PLMN code to a number which eNB is configured. i.e 24451.
> It detects the code. However, it looks for HPLMN. Since, it is not there,
> it tries to connect via existing PLMN and it fails (I am assuming it looks
> for the equivalent HPLMN next). Here, it fails.  PS: I changed the details
> in the ue.conf.example and nas_test.cc file
>
> In nas.c file,
>     nas_log->error("Getting Home PLMN Id from USIM. Defaulting to
> 001-01\n");
>     uint16_t mcc          = 61441; // This is 001
>     uint16_t mnc          = 65281; // This is 01
>
> How is this encoded? I suspect this triggers the default one. How can I
> code it?
>
> *Attached are the logs for your reference:*
> *1. ue_original.log (Without modifying PLMN code)*
> * 2. ue.log (Modifying PLMN code). *
>
> *Here's the output at the Terminal: *
>
> ubuntu at ubuntu-Zephyrus-GX501GI:~/srsLTE-issuefix_format1c/build$ srsue
> --rf.dl_earfcn 2875 --log.all_level=info
> Reading configuration file /home/ubuntu/.config/srslte/ue.conf...
>
> Built in Release mode using 19.3.0.
>
> ---  Software Radio Systems LTE UE  ---
>
> 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.
> 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: 1300 MB/s)
> [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1303 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)
> Waiting PHY to initialize...
> 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
> ...
> Attaching UE...
> Searching cell in DL EARFCN=2875, f_dl=2632.5 MHz, f_ul=2512.5 MHz
> .
> Found Cell:  Mode=FDD, PCI=12, PRB=25, Ports=2, CFO=-0.3 KHz
> Found PLMN:  Id=24451, TAC=12594
> Could not find Home PLMN Id=00101, trying to connect to PLMN Id=24451
> Random Access Transmission: seq=30, ra-rnti=0x2
> Random Access Complete.     c-rnti=0x3d7, ta=4
> Received ConnectionReject. Wait time: 8
> Random Access Transmission: seq=3, ra-rnti=0x2
> Received ConnectionReject. Wait time: 8
> Random Access Complete.     c-rnti=0x9fa6, ta=4
> Random Access Transmission: seq=27, ra-rnti=0x2
> Received ConnectionReject. Wait time: 8
> Random Access Complete.     c-rnti=0x3b75, ta=4
> Random Access Transmission: seq=16, ra-rnti=0x2
> Received ConnectionReject. Wait time: 8
> Random Access Complete.     c-rnti=0xd744, ta=0
> Random Access Transmission: seq=0, ra-rnti=0x2
> Received ConnectionReject. Wait time: 8
> Random Access Complete.     c-rnti=0x7313, ta=4
>
>
> Regards,
> Saimanoj
>
> On Fri, Jun 21, 2019 at 7:15 PM Ismael Gomez <
> ismael.gomez at softwareradiosystems.com> wrote:
>
>> Hi Saimanoj,
>>
>> Thanks for reporting this. This is indeed a bug in resolving RV value for
>> Format1C for SI-RNTI. Thanks for catching that. I've pushed a new branch
>> with a possible fix here:
>> https://github.com/srsLTE/srsLTE/tree/issuefix_format1c
>>
>> When you have a chance, could you please try it again and let us know if
>> it works? ue.log would be very useful.
>>
>> Thanks
>>
>> On Fri, 21 Jun 2019 at 13:55, Saimanoj Katta <saimanoj.katta at cumucore.com>
>> wrote:
>>
>>> Hello Andre,
>>>
>>> Sorry for the late reply. I get a clean signal when I execute pdsch_ue
>>> as you advised me to check.
>>> When I run srsue, it even detects a cell, but, the index values start to
>>> appear and the error keeps happening-
>>>
>>> Found Cell:  Mode=FDD, PCI=12, PRB=25, Ports=2, CFO=0.3 KHz
>>> Invalid inputs rv_idx=-1, cb_idx=15
>>> /home/ubuntu/srsLTE/lib/src/phy/phch/sch.c.343: Error in rate matching
>>> .
>>> .
>>> .
>>> Invalid inputs rv_idx=-1, cb_idx=15
>>> /home/ubuntu/srsLTE/lib/src/phy/phch/sch.c.343: Error in rate matching
>>>
>>> ^Z
>>> [7]+  Stopped                 srsue --rf.dl_earfcn 2875
>>> --log.all_level=info
>>>
>>> It always, asks MAC to look for SIB1(Attached are the logs). In eNB
>>> configuration, S1B1 is not configured. To configure it in eNB, it takes a
>>> huge time, I understand. Is it easier to disable it in the code and start
>>> working to recieve SIB2?  I am a beginner to this platform and I am
>>> confused, what to do next.
>>>
>>> Regards,
>>> Saimanoj
>>>
>>> On Fri, Jun 14, 2019 at 3:18 PM Andre Puschmann <
>>> andre.puschmann at softwareradiosystems.com> wrote:
>>>
>>>> You don't need to configure anything at the UE side. It detects
>>>> everything automatically.
>>>>
>>>> Try pdsch_ue if you have issues with the UE and make sure you can
>>>> receive a clean signal.
>>>>
>>>> Cheers
>>>> Andre
>>>>
>>>> On 11/6/19 16:04, Saimanoj Katta wrote:
>>>> > Hi,
>>>> >
>>>> > I have attached the logs. I analyzed and realized this: The PLMN
>>>> which I
>>>> > have given is not detected by the code. Furthermore, the SIB1 is not
>>>> > detected. There needs to be decoding of MIB to connect, right? Do I
>>>> need
>>>> > to change something from expert config options?
>>>> >
>>>> > Further, In the README file, it says, it has been tested for
>>>> bandwidths:
>>>> > 1.4, 3, 5, 10, 15 and 20 MHz. I assume this is the channel bandwidth
>>>> and
>>>> > I need it for 20MHz. From one of the papers, I remember the srsLTE
>>>> code
>>>> > is set to 20MHz. How do I change it? I was not able to decode.
>>>> >
>>>> > Regards,
>>>> > manu
>>>>
>>>>
>>>> --
>>>> Andre Puschmann
>>>>
>>>> Software Radio Systems (SRS)
>>>> http://www.softwareradiosystems.com
>>>>
>>>> PGP/GnuPG key: 6C42AB31
>>>> fingerprint: 137A AE49 785B A445 257C 8AD7 D877 A498 6C42 AB31
>>>>
>>> _______________________________________________
>>> srslte-users mailing list
>>> srslte-users at lists.softwareradiosystems.com
>>> http://www.softwareradiosystems.com/mailman/listinfo/srslte-users
>>>
>>
>>
>> --
>> Ismael Gomez Ph.D.
>>
>> Software Radio Systems (SRS)
>> http://www.softwareradiosystems.com
>>
>> ismael.gomez at softwareradiosystems.com
>>
>

-- 
Ismael Gomez Ph.D.

Software Radio Systems (SRS)
http://www.softwareradiosystems.com

ismael.gomez at softwareradiosystems.com
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