[srslte-users] Failed to get Release 10(?) bcch_dlsch messages.

Mon May 30 17:55:04 UTC 2016

Can you send the dumped core from srsUE and the ue.log file please? Set the
logging to info for all layers please. Release 10 should be backwards
compatible with Release 8 so that shouldn't be a problem at all.

On Mon, 30 May 2016 at 19:48 Enes ÜNAL <aenesunal at gmail.com> wrote:

> 
> Hello,
>
> I'm living in Turkey, and there are 3 different operators here. By using
> srsUE, I successfully got SIB1, SIB2 messages for 2 operator. However, as I
> discovered the third operator is using LTE Release-10
>  while 2 of them using Release-9.
> srsUE is
>  failed
> to
>  get SIB messages for this
> particular 
> operator.
> For every dl_frequencies. Currently the operator have 2 different center
> frequencies in 2 different band LTE-800 & LTE-1800.
>
> You can find tt.cap and tt_sync.cap capture files
>  in the bottom of this e-mail
> generated by followings respectively.
> 
> #################################################################
>  "./usrp_capture -f 796000000 -o tt.cap"
> #################################################################
> linux; GNU C++ version 5.3.1 20151219; Boost_105800;
> UHD_003.009.002-0-unknown
>
> Opening RF device...
> -- Detected Device: B200mini
> -- Operating over USB 3.
> -- Initialize CODEC control...
> -- Initialize Radio control...
> -- Performing register loopback test... pass
> -- Performing CODEC loopback test... pass
> -- Asking for clock rate 16.000000 MHz...
> -- Actually got clock rate 16.000000 MHz.
> -- Performing timer loopback test... pass
> -- Setting master clock rate selection to 'automatic'.
> -- Asking for clock rate 32.000000 MHz...
> -- Actually got clock rate 32.000000 MHz.
> -- Performing timer loopback test... pass
> -- Asking for clock rate 16.000000 MHz...
> -- Actually got clock rate 16.000000 MHz.
> -- Performing timer loopback test... pass
> -- Asking for clock rate 30.720000 MHz...
> -- Actually got clock rate 30.720000 MHz.
> -- Performing timer loopback test... pass
> Set RX freq: 796.00 MHz
> Set RX gain: 40.00 dB
> Correctly RX rate: 0.96 MHz
> ^COk - wrote 777600 samples
>
> #################################################################
> "./usrp_capture_sync -l 279 -f 796000000 -o tt_sync.cap".
> #################################################################
>
> linux; GNU C++ version 5.3.1 20151219; Boost_105800;
> UHD_003.009.002-0-unknown
>
> Opening RF device...
> -- Detected Device: B200mini
> -- Operating over USB 3.
> -- Initialize CODEC control...
> -- Initialize Radio control...
> -- Performing register loopback test... pass
> -- Performing CODEC loopback test... pass
> -- Asking for clock rate 16.000000 MHz...
> -- Actually got clock rate 16.000000 MHz.
> -- Performing timer loopback test... pass
> -- Setting master clock rate selection to 'automatic'.
> -- Asking for clock rate 32.000000 MHz...
> -- Actually got clock rate 32.000000 MHz.
> -- Performing timer loopback test... pass
> -- Asking for clock rate 16.000000 MHz...
> -- Actually got clock rate 16.000000 MHz.
> -- Performing timer loopback test... pass
> -- Asking for clock rate 30.720000 MHz...
> -- Actually got clock rate 30.720000 MHz.
> -- Performing timer loopback test... pass
> Set RX freq: 796.000000 MHz
> Set RX gain: 60.0 dB
> -- Asking for clock rate 7.680000 MHz...
> -- Actually got clock rate 7.680000 MHz.
> -- Performing timer loopback test... pass
> Setting sampling rate 1.92 MHz
> Using Volk machine: avx2_64_mmx_orc
> Ok - wrote 648 subframesubframes.....
>
> #################################################################
> Below you can also find the decoded MIB generated by "pdsch_ue -f
> 796000000"
> #################################################################
>
> linux; GNU C++ version 5.3.1 20151219; Boost_105800;
> UHD_003.009.002-0-unknown
>
> Opening RF device...
> -- Detected Device: B200mini
> -- Operating over USB 3.
> -- Initialize CODEC control...
> -- Initialize Radio control...
> -- Performing register loopback test... pass
> -- Performing CODEC loopback test... pass
> -- Asking for clock rate 16.000000 MHz...
> -- Actually got clock rate 16.000000 MHz.
> -- Performing timer loopback test... pass
> -- Setting master clock rate selection to 'automatic'.
> -- Asking for clock rate 32.000000 MHz...
> -- Actually got clock rate 32.000000 MHz.
> -- Performing timer loopback test... pass
> -- Asking for clock rate 16.000000 MHz...
> -- Actually got clock rate 16.000000 MHz.
> -- Performing timer loopback test... pass
> Starting AGC thread...
> -- Asking for clock rate 30.720000 MHz...
> -- Actually got clock rate 30.720000 MHz.
> -- Performing timer loopback test... pass
> Tunning receiver to 796.000 MHz
> Searching for cell...
> Using Volk machine: avx2_64_mmx_orc
> *Found Cell_id: 279 CP: Normal  , DetectRatio=100% PSR=17.98, Power=-12.1
> dBm
>  Found Cell_id:   0 CP: Normal  , DetectRatio= 0% PSR=0.00, Power=-inf dBm
>  Found Cell_id:   0 CP: Normal  , DetectRatio= 0% PSR=0.00, Power=-inf dBm
> Decoding PBCH for cell 279 (N_id_2=0)
> -- Asking for clock rate 11.520000 MHz...
> -- Actually got clock rate 11.520000 MHz.
> -- Performing timer loopback test... pass
> Setting sampling rate 11.52 MHz
>  - Cell ID:         279   5.9, FrameCnt: 0, State: 1
>  - Nof ports:       2
>  - CP:              Normal
>  - PRB:             50
>  - PHICH Length:    Normal
>  - PHICH Resources: 1/6
>  - SFN:             1020
> Decoded MIB. SFN: 1020, offset: 1
> CFO:  -0.17 kHz, SNR: -nan dB, PDCCH-Miss:  -nan%, PDSCH-BLER:   inf%
> CFO:  +0.32 kHz, SNR: -nan dB, PDCCH-Miss: 100.00%, PDSCH-BLER: 100.00%
>
> #################################################################
> When I run srsUE with 796MHz DL freq, I got:
> #################################################################
>
> linux; GNU C++ version 5.3.1 20151219; Boost_105800;
> UHD_003.009.002-0-unknown
>
> ---  Software Radio Systems LTE UE  ---
>
> Reading configuration file ue.conf...
> Using srsLTE version 001.002.000
> -- Detected Device: B200mini
> -- Operating over USB 3.
> -- Initialize CODEC control...
> -- Initialize Radio control...
> -- Performing register loopback test... pass
> -- Performing CODEC loopback test... pass
> -- Asking for clock rate 16.000000 MHz...
> -- Actually got clock rate 16.000000 MHz.
> -- Performing timer loopback test... pass
> -- Setting master clock rate selection to 'automatic'.
> -- Asking for clock rate 32.000000 MHz...
> -- Actually got clock rate 32.000000 MHz.
> -- Performing timer loopback test... pass
> -- Asking for clock rate 16.000000 MHz...
> -- Actually got clock rate 16.000000 MHz.
> -- Performing timer loopback test... pass
> Setting frequency: DL=796.0 Mhz, UL=837.0 MHz
> Searching for cell...
> Using Volk machine: avx2_64_mmx_orc
> Found CELL ID: 279 CP: Normal  , CFO: -0.1 KHz.
> Trying to decode MIB...
>  - Cell ID:         279
>  - Nof ports:       2
>  - CP:              Normal
>  - PRB:             50
>  - PHICH Length:    Normal
>  - PHICH Resources: 1/6
>  - SFN:             0
> MIB received BW=10 MHz
> Initializating cell configuration...
> Setting Sampling frequency 11.52 MHz
> Segmentation fault (core dumped)
>
> #################################################################
>
> I debugged UE, and what I found is quite interesting. In the
> phch_worker.cc:373 (commit 9482eee); while filling MAC grant structure,
> every time grant->n_bytes is filling as 0 (zero).
>
> What may cause this problem? Is there any missing part in the UE?
>
> Thanks in advance,
> Best,
> Enes.
>
> -------------------------
> tt.cap : https://drive.google.com/open?id=0B96xxEajM94mYklNdmFfMzI3R00
> tt_sync.cap :
> https://drive.google.com/open?id=0B96xxEajM94mTWVzeFg3T3RzVG8
>
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> srslte-users at lists.softwareradiosystems.com
> http://www.softwareradiosystems.com/mailman/listinfo/srslte-users
>
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