[srslte-users] COTS UE fails to connect to SRSLTE eNB with 6 PRBs ( 1.4MHz BW)

[Venu Vennapusa]

I came across this http://www.softwareradiosystems.com/pipermail/srslte-users/2018-September/001901.html  and tried different PDSCH MCSs manually along with below changes, but no luck.


rr.conf: nof_prb set to 0 for CQI and SR

sib.conf:prach_freq_offset set to 0

enb.conf: pdsch_mcs set to 10, 20, 24, 28


Can some one please forward me with the working configuration.




________________________________
From: srslte-users <srslte-users-bounces at lists.softwareradiosystems.com> on behalf of Venu Vennapusa <venu.vennapusa at cohere-technologies.com>
Sent: Monday, July 1, 2019 12:46 PM
To: srslte-users at lists.softwareradiosystems.com
Subject: [srslte-users] COTS UE fails to connect to SRSLTE eNB with 6 PRBs ( 1.4MHz BW)


Hi Team,


  I am trying to get a connection with COTS UE on srslte eNB with 6 PRBs. But UE never gets connection.


Did anybody have success with 6 PRBs on srs eNB with COTS UE ? If yes, am I missing anything here ?


Note that the prach_freq_offset  parameter has been set to 0. Please take a look and let me know if you need any other information.Any help here is much appreciated. Thanks in advance.




eNB console logs:

@@@@@@@@@@@@@

vennave at gpu6:~/srsLTE$ sudo srsenb
linux; GNU C++ version 7.4.0; Boost_106501; UHD_003.009.007-0-g50839059


Built in Release mode using commit 5343b33f on branch master.

---  Software Radio Systems LTE eNodeB  ---

Reading configuration file /home/vennave/.config/srslte/enb.conf...
Opening USRP with args: type=x300,addr0=192.168.40.2,send_frame_size=8000,master_clock_rate=184.32e6
-- X300 initialization sequence...
-- Determining maximum frame size... 8000 bytes.
-- Setup basic communication...
-- Loading values from EEPROM...
-- Setup RF frontend clocking...
-- Radio 1x clock:184.32
-- Initialize Radio0 control...
-- Performing register loopback test... pass
-- Initialize Radio1 control...
-- Performing register loopback test... pass
Setting frequency: DL=2680.0 Mhz, UL=2560.0 MHz
Setting Sampling frequency 1.92 MHz

==== eNodeB started ===
Type <t> to view trace



Regards,

Venu
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