srsRAN gNB with COTS UEs setup using USRP X410

[fahad-ece]

Hello Everyone,

I would like to implement the srsRAN gNB with COTS UEs using USRP X-410. Unfortunately there is no srsRAN configuration file for X410. For srsRAN configuration- I was trying to follow the files from the following website: https://github.com/srsran/srsRAN_Project/blob/main/configs/gnb_rf_b200_tdd_n78_20mhz.yml . Can anyone please guide me with the necessary modification to complete this setup?

[zhuangyufan]

The following configuration works well for X410.

amf:
addr: 192.168.18.196
bind_addr: 192.168.18.197

ru_sdr:
device_driver: uhd
device_args: type=x4xx,num_recv_frames=64,num_send_frames=64
srate: 122.88

tx_gain: 50
rx_gain: 40

cell_cfg:
dl_arfcn: 632628
band: 78
channel_bandwidth_MHz: 100
common_scs: 30
plmn: "30030"
tac: 100
pci: 1

log:
filename: ./gnb.log
all_level: info

pcap:
mac_enable: false
mac_filename: /tmp/gnb_mac.pcap
ngap_enable: false
ngap_filename: /tmp/gnb_ngap.pcap

[jarenass001]

Did you use any iptables rule or any additional nat rule to redirect traffic when using x410?
I am implementing it and the UE messages are not getting through to the gnb and i suspect that is the problem, because I used a spectrum analyser and x410 can transmit well.
I did a COTS UE implementation using b210 and all worked well. I don't know if there are some different steps to follow or something else.