[srsran-users] Question regarding srsenb delay channel emulator

[DANG Anh Khoa]

Dear Justin,

Thank you for your reply.
I have changed the max_prach_offset_us to 150
and change zero_correlation_zone_cfg to 11 in "srsRAN/lib/include/srsran/asn1/rrc/rr_common.h" and remake the source code.
But the problem still occurs as of srsue's below:

Found PLMN:  Id=00101, TAC=7
Random Access Transmission: seq=9, tti=8661, ra-rnti=0x2
Random Access Transmission: seq=25, tti=8681, ra-rnti=0x2
Random Access Transmission: seq=7, tti=8701, ra-rnti=0x2
Random Access Transmission: seq=8, tti=8721, ra-rnti=0x2
Random Access Transmission: seq=50, tti=8741, ra-rnti=0x2
Random Access Transmission: seq=16, tti=8761, ra-rnti=0x2
Random Access Transmission: seq=19, tti=8781, ra-rnti=0x2
Random Access Transmission: seq=13, tti=8801, ra-rnti=0x2
Random Access Transmission: seq=8, tti=8821, ra-rnti=0x2
Random Access Transmission: seq=25, tti=8841, ra-rnti=0x2
Attach failed (attempt 5/5)

Do you suggest any other solution for this?

Thank you and best regards,
K.A. Dang

________________________________
From: Justin Tallon <justin.tallon at srs.io>
Sent: Wednesday, February 1, 2023 11:13 AM
To: DANG Anh Khoa <anh-khoa.dang.auditeur at lecnam.net>
Cc: srsran-users at lists.srsran.com <srsran-users at lists.srsran.com>
Subject: Re: [srsran-users] Question regarding srsenb delay channel emulator

have you configured your  max_prach_offset_us  > 100?

additionally you should use a zero_correlation_zone_cfg value of 11 or 0.


Justin Tallon

Engineering Manager

Software Radio Systems

[https://www.srs.io/wp-content/uploads/2021/06/email-icon-2x.png]
justin at srs.io<mailto:justin at srs.io>
[https://www.srs.io/wp-content/uploads/2021/06/link-icon-2x.png]
www.srs.io<https://www.srs.io>
[https://www.srs.io/wp-content/uploads/2021/06/address-icon-2x.png]
Barcelona, Spain
[https://www.srs.io/wp-content/uploads/2021/06/LogoSRSsmall.png]
[twitter]<https://twitter.com/srssystems>
[linkedin]<https://www.linkedin.com/in/justin-tallon-71807136/>


On Wed, Feb 1, 2023 at 11:07 AM DANG Anh Khoa <anh-khoa.dang.auditeur at lecnam.net<mailto:anh-khoa.dang.auditeur at lecnam.net>> wrote:
Hello everyone,

I am new to srsRAN platform, and recently I have been using srsRAN for my project.

I have successfully set up 4G with ZMQ srsRAN locally based on the tutorial (https://docs.srsran.com/en/latest/app_notes/source/zeromq/source/index.html#srsran-with-zmq-virtual-radios).
I am able to use the downlink channel emulator (fading, rlf) with default values on enb.conf.
However, the delay parameter is not working and causing Attach Failed (5/5) on srsRAN:

[channel.dl.delay]
enable        = true
period_s      = 3600
init_time_s   = 0
maximum_us    = 100
minimum_us    = 10

The configuration for srsRAN overall is the same as in the tutorial.
I have checked the website and tried to vary some delay parameters, but it is still not working. Is there something that I am missing?

Thanks and best regards,
K.A. Dang

_______________________________________________
srsran-users mailing list
srsran-users at lists.srsran.com<mailto:srsran-users at lists.srsran.com>
https://lists.srsran.com/mailman/listinfo/srsran-users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.srsran.com/pipermail/srsran-users/attachments/20230202/7e54d734/attachment.htm>