fail speedtest on UE

[pchat-imm]

I have problem when using Raspberry Pi with Quectel board as UE. When I try to do speedtest-cli, the open5gs screen shows that the gNB-UE is disconnected before reconnecting. Although I can retrieve speedtest-cli result, I lost connection with the srsRAN network and need to reconnect. Please advise me What should I do?

This open5gs log shows UE disconnect from the network and try to reconnect.

Previously, I successfully use CPE as UE connecting to the srsRAN network. The CPE can provide internet for a mobile phone. Then, I change to Raspberry Pi with Quectel board. The RPI with Quectel can receive IP address and be able to ping to 1.1.1.1, 8.8.8.8, www.chula.ac.th. But cannot do speedtest-cli without lost internet connection.

system
Core network: open5gs
RAN: USRP B210
UE: Raspberry PI 3 with Quectel RM510Q-GL

gnb config
gnb_config.txt

log

• gnb_log gnb.zip
• gnb_wireshark.zip
• open5gs_wireshark_result ogstun_core_network.zip
• speedtest_result_on_rpi rpi_speedtest.txt

[pgawlowicz]

In gnb logs, you have:

2024-05-24T09:26:59.697188 [DU-MNG  ] [I] ue=0: RLF timer expired with cause="RLC max ReTxs reached". Requesting a UE release...
2024-05-24T09:26:59.697202 [CU-CP-F1] [I] Rx PDU GNB-DU-ID=1 GNB-DU-UE-F1AP-ID=0: UEContextReleaseRequest

could you try to tune TX/RX gains, both seem to be quite high. Maybe the signal gets saturated.

[pgawlowicz]

@pchat-imm any update on this issue?

[pchat-imm]

currently try tx_gain: 45, rx_gain: 30 but not success in testing speedtest. Will be able to test again on tomorrow or next two weeks. Will try to update as soon as possible. Thank you

[pgawlowicz]

@pchat-imm any update on this issue?