How to use Quectel RM510 as UE

[pchat-imm]

I used to use UE as samsung a7 and successful with srsRAN_4G. And run srsRAN_Project with ZMQ as bladeRF not work very well with 5G.

Right now, for srsRAN_4G, I want to use Quectel RM510Q-GL with sysmocom sim card as UE.
Currently I can only ping using 'AT+QPING=1,"8.8.8.8" on minicom
when I run 'AT+QPING=1,"8.8.8.8"' on minicom
the screen show

at+qping=1,"8.8.8.8"                                                            
OK                                                                              
 +QPING: 569   

and the tracer of gNB (BladeRF) showing

               -----------------DL----------------|-------------------------UL-------------------------
rat  pci rnti  cqi  ri  mcs  brate   ok  nok  (%) | pusch  pucch  phr  mcs  brate   ok  nok  (%)    bsr
lte    1   62   15   1    5   2.3k    6    0   0% |  23.4   23.1   40   18    79k   11    0   0%    0.0
lte    1   62   15   1    0      0    0    0   0% |   n/a   99.9    0    0      0    0    0   0%    0.0
lte    1   62   15   1    0      0    0    0   0% |   n/a   99.9    0    0      0    0    0   0%    0.0
lte    1   62   15   1    0      0    0    0   0% |   n/a   99.9    0    0      0    0    0   0%    0.0

The bit rate only occur once and never occur again. But I woud like to test for longer time. Is there a command for that? for ping continuously?

However, if you guys don't use QPING command, what other command you can use, to make quectel run continuously on srsRAN?

Currently I use
SDR: BladeRF A4
UE: Quectel RM510Q-GL with sysmocom sim card
And run srsRAN_4G with a core network from open5GS

[pchat-imm]

this is log of the gNB and quectel minicom
gnb_log.txt
quectel_minicom.txt

[pgawlowicz]

While the manual for Quectel RM510Q-GL says nothing about QPING, there is this manual for EC2x&EG9x&EM05T with QPING section:
https://sixfab.com/wp-content/uploads/2018/09/Quectel_EC2xEG9xEM05_TCPIP_AT_Commands_Manual_V1.0.pdf

It seems it is possible to specify number of pings:

Could you try the following command?

at+qping=1,"8.8.8.8",4,10

[herlesupreeth]

I use mmcli and use ping command from terminal. For example

First I run mmcli to list all connected modem

sudo mmcli -L
    /org/freedesktop/ModemManager1/Modem/0 [Intel] MBIM

then, take note of modem number i.e. in my case its 0. Then, I run following commands

sudo mmcli -m 0 -e
sudo mmcli -m 0 --simple-connect="apn=internet"

the above command initiates a PDN connection for DNN "internet". Then, you should be able to use AT command or see in logs of 5GC for the allocated IP for internet DNN. Say for example, IP allocated is 192.168.100.2, then check the output of ip a and you should find an interface named wwanX e.g. wwan0. Assign the allocated IP to that interface as follows

sudo ip link set wwan0 up
sudo ip a add 192.168.100.2/24 dev wwan0

Now, you can ping as follows

ping 8.8.8.8 -I wwan0

[pchat-imm]

@pgawlowicz this one does not work, it still produces 1 ping for me.

[pchat-imm]

@herlesupreeth This one is working!!! Thank you very much.

[chonghua1]

Dear @herlesupreeth,
I tried this method with Quectel RM500Q-GL, when I ping as ping 8.8.8.8 -I wwan0 I can't get response, but I can see there is some traffic at the gNB console:

and Open5GS core network logs some error:

Do you have any idea of this issue? Thank you!

[herlesupreeth]

Then, please verify you have NATing enabled on the 5GC. If then it does not work then send me the output of 5GC (like above screenshot) and output of ip a on the machine to which Quectel modem is connected.

Can you also describe your setup? Are you running gNB + 5GC using the docker compose present in this repo?