[srsran-users] AT Command to configure Quectel Module as UE in srsRAN4G

[Xavier Arteaga]

Hi,
First of all, make sure there are no warnings on the console. From the
screenshot, I can say that you got the master_clock_rate wrong. Can you try
appending to the device_args master_clock_rate=245.76e6?

Secondly, my favorite AT commands are the following.

List supported bands:
AT+QNWPREFCFG="policy_band"

Search networks (it should find the network):
AT+COPS=?

Set preferred network mode (change for LTE):
AT+QNWPREFCFG="mode_pref",NR5G

Set preferred band  (change for an LTE band):
AT+QNWPREFCFG="nr5g_band",41

Enable airplane mode:
AT+CFUN=4

Disable airplane mode:
AT+CFUN=1

Finally, you need to set up the network manager using nmcli, I believe that
depends on the core network configuration.

Kind regards,
Xavier

On Thu, 7 Mar 2024 at 14:48, ZHUANG Yufan <yufan.zhuang at connect.ust.hk>
wrote:

> Dear team,
>
> I am setting a LTE system using srsRAN_4G, with a Quectel RM520N wireless
> modem module as a UE. How to use *AT commands* to configure the Quectel
> module to make it connect to my LTE system?
>
> The configuration of epc:
>
> 22 | *#####################################################################*23 | [mme]24 | mme_code = 0x1a25 | mme_group = 0x000126 | tac = 0x000727 | mcc = 99928 | mnc = 7029 | mme_bind_addr = 127.0.1.10030 | apn = srsapn31 | dns_addr = 8.8.8.832 | encryption_algo = EEA033 | integrity_algo = EIA134 | paging_timer = 235 36 | *#####################################################################*
>
>
> The configuration of enb:
>
> 18 | *#####################################################################*19 | [enb]20 | enb_id = 0x19B21 | mcc = 99922 | mnc = 7023 | mme_addr = 127.0.1.10024 | gtp_bind_addr = 127.0.1.125 | s1c_bind_addr = 127.0.1.126 | n_prb = 5027 | *#tm = 4*28 | *#nof_ports = 2*29 |30 | *#####################################################################*
>
>
> Radio head: USRP X410
> OS: Ubuntu 20.04
>
> Atteched are the epc log and the enb log.
>
> Thank you.
>
> Sincerely,
> Yufan
>
>
>
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>
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