[srsran-users] Question regarding srsenb delay channel emulator

[Justin Tallon]

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
justin at srs.io
www.srs.io
Barcelona, Spain
[image: twitter] <https://twitter.com/srssystems>
[image: 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> 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
>
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>
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