.. This work is licensed under a Creative Commons Attribution 4.0 International License.
.. SPDX-License-Identifier: CC-BY-4.0
.. Copyright (C) 2020 AT&T Intellectual Property
+.. Copyright (C) 2021 HCL Technologies Limited.
QoE Predictor Overview
======================
QoE Predictor (QP) is an Xapp in the Traffic Steering O-RAN use case,
which uses the following Xapps:
-#. Traffic Steering, which sends prediction requests to QP Driver.
-#. QP Driver, which fetches data from SDL on behalf of traffic steering,
- both UE Data and Cell Data, merges that data together, then sends off
- the data to the QoE Predictor.
+#. Traffic Steering, which sends prediction requests to QP.
#. QoE Predictor, which predicts and sends that prediction back to Traffic Steering
-#. KPIMONN, which populates SDL in the first place.
+#. KPIMONN, which populates UE and Cell metrics into the influxdb.
Expected Input
--------------
The QP Xapp expects a prediction-request JSON message via RMR with the following structure::
-
- {
- "predictionUE": "UEId1",
- "ueMeasurements" :
- { "servingCellId" : "CID2",
- "measTimestampUePrbUsage" : TS1,
- "measPeriodUePrbUsage" : Int,
- "uePrbUsageDL" : Int,
- "uePrbUsageUL" : Int,
- "measTimestampUePdcpBytes" : TS2,
- "measPeriodUePdcpByes" : Int,
- "uePdcpBytesDL": Int,
- "uePdcpBytesUL" : Int
- },
- "cellMeasurements" : [
- {
- "cellId" : "CID2",
- "measTimestampPrbAvailable" : TS,
- "measPeriodPrbAvailable" : Int,
- "prbAvailableDL" : Int,
- "prbAvailableUL" : Int,
- "measTimestampPdcpBytes" : TS,
- "measPeriodPdcpBytes" : Int,
- "pdcpBytesDL" : 30000000,
- "pdcpBytesUL" : 5000000,
- "measTimestampRf" : TS,
- "measPeriodRf" : Int,
- "rfMeasurements" : {
- "rsrp": Int,
- "rsrq": Int,
- "rsSinr": Int
- }
- },
- {
- "cellId" : "CID1",
- "measTimestampPrbAvailable" : TS,
- "measPeriodPrbAvailable" : Int,
- "prbAvailableDL" : Int,
- "prbAvailableUL" : Int,
- "measTimestampPdcpBytes" : TS,
- "measPeriodPdcpBytes" : Int,
- "pdcpBytesDL" : 10000000,
- "pdcpBytesUL" : 2000000,
- "measTimestampRf" : TS,
- "measPeriodRf" : Int,
- "rfMeasurements" : {
- "rsrp": Int,
- "rsrq": Int,
- "rsSinr": Int
- }
- },
- {
- "cellId" : "CID3",
- "measTimestampPrbAvailable" : TS,
- "measPeriodPrbAvailable" : Int,
- "prbAvailableDL" : Int,
- "prbAvailableUL" : Int,
- "measTimestampPdcpBytes" : TS,
- "measPeriodPdcpBytes" : Int,
- "pdcpBytesDL" : 50000000,
- "pdcpBytesUL" : 4000000,
- "measTimestampRf" : TS,
- "measPeriodRf" : Int,
- "rfMeasurements" : {
- "rsrp": Int,
- "rsrq": Int,
- "rsSinr": Int
- }
- }
- ]
- }
-
+{"UEPredictionSet": ["Car-1"]}
Expected Output
---------------
The QP Xapp should send a prediction for both downlink and uplink throughput
as a JSON message via RMR with the following structure::
- {
- "UEId1": {
- "CID1" : [10000000,2000000],
- "CID2" : [30000000,5000000],
- "CID3" : [50000000,4000000]
- }
- }
-
-
+ {"Car-1":{
+ "c6/B2": [12650, 12721],
+ "c6/N77": [12663, 12739],
+ "c1/B13": [12576, 12655],
+ "c7/B13": [12649, 12697],
+ "c5/B13": [12592, 12688]
+ }}