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example_no_jrtc_baremetal.md

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Run the first example without jrt-controller

We will run the first example without jrt-controller.

To start without jrt-controller, we need to set the env variable USE_JRTC=0. The default environment options are in file ".env". If you wish to override any of these variables, create a separate file called ".env.local", with variable which should be overwritten, for example:-

USE_JRTC=0

Now, let's build the codelets first:

cd codelets
./make.sh

Next, you need to open 3 terminal windows, one for the srsRAN, one for a message decoder, and one for loading/unloading codelets. In each window, set up the environment variables as described here

Terminal-1 In the srsRAN terminal, start the gnb binary in the usual way

Terminal-2 In the message decoder window, you need to run the decoder application. This is an application to which schemas will be loaded, and it will printed the protobuf decode of messages it receives.

cd utils
./run_jbpf_decoder.sh

For more info on the message decoder, see here.

Terminal-3 Run the jbpf reverse proxy (see here for more info):

sudo -E $SRSRAN_DIR/out/bin/srsran_reverse_proxy --host-port 30450 --address "/tmp/jbpf/jbpf_lcm_ipc"

Terminal-4 Finally, in the last window, load the schemas and codelets (if you run your srsRAN with sudo, you'll need to run the above command with sudo):

cd utils
sudo -E ./load.sh -c $JBPF_CODELETS/xran_packets/xran_packets.yaml

In the srsRAN window you should see a bunch of messages, including the final confirmation: Codeletset is loaded OK

In the decoder window, you should see an output like this:

INFO[0078] {"timestamp":"1740588245768711680","ulPacketStats":{"dataPacketStats":{"PacketCount":11016,"PrbCount":"716496","packetInterArrivalInfo":{"hist":[0,0,422,2157,1874,4960,1444,0,0,0,1,1,0,54,59,44]}}},"dlPacketStats":{"dataPacketStats":{"PacketCount":60300,"PrbCount":"6391800","packetInterArrivalInfo":{"hist":[45126,96,3,0,0,0,6223,8651,0,0,0,0,0,201,0,0]}},"ctrlPacketStats":{"PacketCount":9692,"packetInterArrivalInfo":{"hist":[7240,971,28,18,16,1,0,0,0,0,1162,58,154,44,0,0]}}}}  streamUUID=75888bf1-b719-d53d-b10c-bccc9719021f

This prints various statistics about the xRAN fronthaul packets (see the collection and reporting codelets for more details).

To unload the codelets, type:

cd utils
sudo -E ./unload.sh -c $JBPF_CODELETS/xran_packets/xran_packets.yaml