Mobility Management Metrics

Mobility Management (MM) is one of the most significant feature of the mobile networks, and Handover is one typical action of mobility.

Handover can occur in the following different ways:

• Intra-gNB-DU.
• Inter gNB-DU and Intra gNB-CU Handover where source and target gNB-DU are connected to common gNB-CU.
• Inter gNB-CU Handover through Next Generation (NG) or Xn interface.
• 5G to 4G Evolved Packet System (EPS) Handover.

Example of sample MM metrics.

{
    "type": "Kafka-Collector",
    "instance": "KC-1",
    "timestamp": "2021-11-11T23:02:25.529000Z",
    "metricType": "MM",
    "domain": "5G",
    "sub-domain": "vRAN",
    "properties": {
      "dataSource": "100.127.46.83:6060",
      "deviceType": "cucp",
      "deviceName": "cucp-851008000",
      "entityType": "ueconmgr",
      "entityName": "ueconmgr-9f9567b57-vn9rw"
    },
    "metrics": {
      "MM_5QI_HoInAtt": 100,
      "MM_5QI_HoInSucc": 0,
      "MM_Ho5gsToEpsFallbackTimeTotal": 0,
      "MM_HoExeHo5gsToEpsFallbackTimeTotal": 0,
      "MM_HoExeInterReq": 0,
      "MM_HoExeInterSucc": 0,
      "MM_HoExeIntraReq": 0,
      "MM_HoExeIntraSucc": 0,
      "MM_HoIntraNRInterCUTotExeTime": 0,
      "MM_HoIntraNRInterCUTotTime": 0,
      "MM_HoIntraNRIntraCUTotExeTime": 0,         
      "HoRsrpDist_UENbrRsrpDist": 0,
      "HoRsrqDist_UENbrRsrqDist": 0
    },
    "tags": {
      "CUCPID": "851008000",
      "RUID": "851002411",
      "DUID": "851008008",
      "CellClusterId": "111",
      "kubernetes_namespace": "lasnv001b-ns-mv-cucp-851008"
    }
  },

The following table lists the JSON definitions.

JSON	Description	Units
MM.HoExeInterReq	Indicates the number of outgoing Handover executions requested by the source gNB.	Integer
MM_5QI_HoInAtt	Indicates the number of 5QI incoming Handover preparation attempts.	Double
MM_5QI_HoInSucc	Indicates the number of successful 5QI Handover incoming.	Double
MM_Ho5gsToEpsFallbackTimeTotal	Indicates the total time of EPS fallback Handover.	Millisecond
MM_HoExeHo5gsToEpsFallbackTimeTotal	Indicates the total time of EPS fallback Handover executions.	Millisecond
MM.HoExeInterSucc	Indicates the number of successful Handover executions received by the source gNB.	Integer
MM.HoExeIntraReq	Indicates the number of outgoing intra-gNB Handover executions requested by the source CUCP.	Integer
MM.HoExeIntraSucc	Indicates the number of successful intra-gNB Handover executions received by the source CUCP.	Integer
MM_HoIntraNRInterCUTotExeTime	Indicates the total time of Xn Handover execution for Intra-NR Inter-CU.	Millisecond
MM_HoIntraNRInterCUTotTime	Intra-NR Inter-CU Total Time of Xn Handover.	Millisecond
MM_HoIntraNRIntraCUTotExeTime	Indicates the total time of Xn Handover execution for Intra-NR Intra-CU.	Millisecond
HoRsrpDist_UENbrRsrpDist	Indicates the number of Handovers triggered with Reference Signal Receive Power (RSRP) distribution bucket.	Double
HoRsrqDist_UENbrRsrqDist	Indicates the number of Handovers triggered with Reference Signal Received Quality (RSRQ) distribution bucket.	Double