Blueprint CU/DU split with monitoring xApp

This blueprint includes a 5G Standalone (SA) network using OCUDU's CU/DU split gNB over ZeroMQ (ZMQ) and an Amarisoft 5GC. FlexRIC is deployed as the Near-RT RIC and connected to the gNB over E2, together with a monitoring xApp for KPM-based O-RAN observability.

Prerequisites

Install the Amarisoft UE model required by this blueprint.

amr-ue-terminal.yaml

apiVersion: v1
kind: Service
metadata:
  name: amr-ue-terminal
  namespace: trirematics
spec:
  publishNotReadyAddresses: true
  selector:
    athena.t9s.io/vendor: amr-ue-terminal
  ports:
    - name: trx-rx
      protocol: UDP
      port: 12000
      targetPort: 12000
    - name: trx-tx
      protocol: UDP
      port: 12001
      targetPort: 12001
    - name: zmq-gnb-rx
      protocol: TCP
      port: 2101
      targetPort: 2101
    - name: zmq-gnb-rx
      protocol: TCP
      port: 2100
      targetPort: 2100

• Apply the service

kubectl apply -f amr-ue-terminal.yaml

• Check the service

kubectl get svc -n trirematics | grep amr-ue-terminal

• (Optional) Delete the service

kubectl delete service amr-ue-terminal -n trirematics

Apply the network

info

• add spec.edge.profiles.ocudu in order for xApp to get valid kpm measurement value

• set terminal.metadata.annotations.extras.ssb-nr-arfcn in order for amarisoft ue connect to the gNB

12-mon-cudu-xapp.yaml

apiVersion: athena.trirematics.io/v1
kind: Network
metadata:
    name: ocudu
    namespace: trirematics
spec:
    slices:
        -   plmn: "00101"
            dnn: internet
            network-mode: IPV4
            service-type: 1
            differentiator: 0xFFFFFF
            ipv4-range: 12.2.1.0/24
            ipv6-range: 2001:db8:1::/64
    access:
        -   name: cu-du
            stack: 5g-sa
            model: ocudu/cu-du
            identity:
                an-id: 30
                tracking-area: 1
            radio:
                device: zmq
            cells:
                -   band: n78
                    arfcn: 632628
                    bandwidth: 40MHz
                    subcarrier-spacing: 30kHz
                    tdd-config:
                        period: 5000
                        dl-slots: 7
                        dl-symbols: 6
                        ul-slots: 2
                        ul-symbols: 4
            controller: flexric.ocudu
            core-networks:
                - amr-cn.ocudu
    core:
        -   name: amr-cn
            stack: 5g-sa
            model: amarisoft/basic-cn
            profiles:
                - debug
            identity:
                region: 128
                cn-group: 4
                cn-id: 5
    edge:
        -   name: flexric
            stack: 5g-sa
            model: mosaic5g/flexric
        -   name: monitoring
            stack: 5g-sa
            model: mosaic5g/monitoring-c
            profiles:
                - kpm-sm
                - ocudu
                - database
    dns:
        ipv4:
            default: 8.8.8.8
            secondary: 8.8.4.4
---
apiVersion: athena.trirematics.io/v1
kind: Terminal
metadata:
    name: amr-ue
    namespace: trirematics
    annotations:
        extras.t9s.io/ssb-nr-arfcn: "631680"
spec:
    vendor: amr
    stack: 5g-sa
    model: amarisoft/amr-ue
    preferred-access: cu-du.ocudu
    target-cores:
        - amr-cn.ocudu
    identity:
        imsi: "001010000000001"
        pin: "1234"
        opc: "0xc42449363bbad02b66d16bc975d77cc1"
        key: "0xfec86ba6eb707ed08905757b1bb44b8f"
        sqn: "0xff9bb4000001"
        amr-ue-count: 1
    slice:
        dnn: "internet"
        network-mode: "IPv4"
        service-type: 1
        differentiator: 0xFFFFFF
    radio:
        device: zmq
        formation: "1x1"
        tx-gain: "0"
        rx-gain: "0"
        bands:
            - n78

Use the command brc install network <blueprint-name>.yaml to deploy the network. It should finish without errors and print out the Kubernetes resource names that were created. Check for the status of the blueprint using the command brc observe. Wait until all the Elements other than the UE are in the STATUS set to 1/1 Y state.