[srsran-users] Unstable connection: PC spec too low?

[Hodgson, Simon]

I have resolved this issue.

Reducing the tx_gain from 80 to 60 has resulted in a stable connection.

Regards


Simon

-----Original Message-----
From: srsran-users <srsran-users-bounces at lists.srsran.com> On Behalf Of Hodgson, Simon
Sent: 02 May 2022 15:46
To: srsran-users at lists.srsran.com
Subject: [srsran-users] Unstable connection: PC spec too low?

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Hello,

I'm attempting to use srsRAN to simulate an LTE network, for testing of various bits of UE.

I have the following setup:

Laptop          i7-5600U CPU, 8GB RAM
OS              Ubuntu 20.04
SDR HW  USRP B205-mini
srsRAN          v21.10
UHD Driver      v4.1.0.4

I have set the CPU frequency scaling to "performance" as suggested in the documentation

The number of PRBs is configured to 25
Send and receive frame size have been set to 512, as recommeneding the configuration file

The UE is able to connect to the network, and I can ping from either end. However the connection is very unstable, often dropping after a few seconds.

I suspect that the laptop I'm using is perhaps underpowered for this application. Although I'm surprised to read that it will run on an Raspberry Pi4, I would have thought this laptop had more computing power than an raspberry Pi.

I've attached a copy of the log from srsenb, but I'm not really sure what I'm looking for in here.

Does anyone have any insights they can share? Would it help to have more diganostic data?

Best Regards


Simon Hodgson