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.go

Init - Step 2 to 6

Used Functions

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)Handle()
  - (MACCallback)Handle()
  - (RLCCallback)Handle()
  - (PDCPCallback)Handle()
  - (GTPCallback)Handle()
  - (SLICECallback)Handle()

Note: Each indication message received through (MAC/RLC/PDCP/GTP/SLICECallback)Handle() with the respective structure of swig_mac/rlc/pdcp/gtp/slice_ind_msg_t as input. 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()

Overview​

Sequence Diagram​

Detail​

Init - Step 2 to 6​

Report Service - Step 7 to 13​

xApp Logic - Step 14​

Exit - Step 15 to 20​