Closed Subangkar closed 1 week ago
You have to correctly set the following two parameters:
[rat.nr]
dl_nr_arfcn = ...
ssb_nr_arfcn = ...
Thanks @pgawlowicz. Adding the configuration parameters to UE config worked out for band 3. However, I tried similar for band 78. Unfortunately, UE isn't getting connected. I am sharing the changed parameters below.
cell_cfg:
dl_arfcn: 641500 # ARFCN of the downlink carrier (center frequency).
band: 78 # The NR band.
channel_bandwidth_MHz: 20 # Bandwith in MHz. Number of PRBs will be automatically derived.
common_scs: 30 # Subcarrier spacing in kHz used for data.
..........
scs
parameter since for band 78, scs has to be 30kHz
[rat.nr]
bands = 78
dl_nr_arfcn = 641500
ssb_nr_arfcn = 641568
scs = 30
nof_carriers = 1
max_nof_prb = 106
nof_prb = 106
Band 78 is for TDD. srsUE supports only FDD
Band 78 is for TDD. srsUE supports only FDD
@pgawlowicz like for band 28?
Is this band 28 supported by both srsUE and srsRAN?
How to use a dedicated band for both srsUE and srsRAN ?
Does is possible to avoid setting ARFCN and setting all the parameters manually like(FDD/TDF, freq, ...)?
Band 28 should work out of the box.
Setting the parameters manually is not exposed, but it should be quite easy to add if really needed.
Band 28 should work out of the box.
Setting the parameters manually is not exposed, but it should be quite easy to add if really needed.
@pgawlowicz , thank you. does it possible to have an example of how to set manually these parameters ?
It requires adding a code that will overwrite the DL and UL frequency derived from the ARFCN.
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It requires adding a code that will overwrite the DL and UL frequency derived from the ARFCN.
May I create a new ticket for this as a feature request, or do you prefer to do it ?
We don’t plan to support this feature in the mainline.
It requires adding a code that will overwrite the DL and UL frequency derived from the ARFCN.
Should it be done only of the files located in this folder https://github.com/srsran/srsRAN_Project/tree/main/lib/ran ?
Issue Description
Hi, I tried the tutorial at the following link to connect SRS gNB and SRS UE for band 3 as mentioned in the config file https://docs.srsran.com/projects/project/en/latest/tutorials/source/srsUE/source/index.html The used configs
The setup works successfully. However, if I change the
dl_arfcn
value, the UE does not connect even after I keep all other configs same. How do I resolve this? My actual target is too connect the SRS UE with SRS gNB for band 78 withdl_arfcn
~ 367960. In this case, what should be the modified value ofdl_earfcn
in SRS UE config file?Setup Details
Expected Behavior
UE conects with the gNB.
Actual Behaviour
The UE does not connect to the gNB but I do not see any errors.