Monitor Customized SM

Overview

A customized service models monitoring xApp is designed to collect the states from the RAN functions in E2-Nodes via different customized SMs, including MAC, RLC, PDCP, GTP, and SLICE 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
• xApp Logic: prints out one way latency of each SM's indication message
• Exit: unsubscribes and terminates xApp

Sequence Diagram

Detail

source code: xapp_cust_moni.py

---

Init - Step 2 to 6

• Used Functions
  • init()
  • get_cust_sm_conf()
  • conn_e2_nodes()

---

Report Service - Step 7 to 13

• Used Function
  • report_{SM-NAME}_sm()
    • report_mac_sm()
    • report_rlc_sm()
    • report_pdcp_sm()
    • report_gtp_sm()
    • report_slice_sm()

---

xApp Logic - Step 14

• Used Function
  • {SM-NAME}Callback()
    • MACCallback()
    • RLCCallback()
    • PDCPCallback()
    • GTPCallback()
    • SLICECallback()

Note: Each indication message received through MAC/RLC/PDCP/GTP/SLICECallback() follows the respective structure of swig_mac/rlc/pdcp/gtp/slice_ind_msg_t. For complete decoding of the message contents, understanding this structure is crucial.

---

Exit - Step 15 to 20

• Used functions
  • rm_report_{SM-NAME]_sm()
    • rm_report_mac_sm()
    • rm_report_rlc_sm()
    • rm_report_pdcp_sm()
    • rm_report_gtp_sm()
    • rm_report_slice_sm()
  • try_stop()