Monitor O-RAN SM

Overview

A O-RAN standarized service models monitoring xApp is designed to collect the measurement data from the RAN functions in E2-Nodes via -RAN standarized SMs (e.g., KPM SMs). It prints out the one way latency of indication message, which is sent from E2-Node to xApp. It includes the following stages:

• Init: initializes xApp based on configuration to set up the E42 connection with NearRT-RIC
• Report Service: subscribes RAN functions to each E2-Node based on the configured service model and action definitions
• xApp Logic: prints out expected measurement data and one way latency of indication message and
• Exit: unsubscribes and terminates xApp

Sequence Diagram

Detail

source code: xapp_oran_moni.go

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Init - Step 2 to 6

• Used Functions
  • Init()
  • Get_oran_sm_conf()
  • Conn_e2_nodes()

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Report Service - Step 7 to 13

• Used Function
  • Report_{SM-NAME}_sm()
    • Report_kpm_sm()

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xApp Logic - Step 14

• Used Function
  • ({SM-NAME}Callback)Handle()
    • (KPMCallback)Handle()

Note: Every indication message received by (KPMCallback)Handle() is stored according to the swig_kpm_ind_data_t structure. To fully decode the contents of the message, it's essential to examine this structure.

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Exit - Step 15 to 20

• Used functions
  • Rm_report_{SM-NAME]_sm()
    • Rm_report_kpm_sm()
  • Try_stop()