1. The document discusses key quality indicators (KQIs) and quality of experience (QoE) metrics for evaluating network performance from the end user perspective. 2. KQIs measure specific parts of the network system but don't necessarily impact user experience, while QoEs are calculated from performance metrics and indicate macro-level user perception. 3. The document lists examples of KQIs and QoEs including session setup success rates, throughput measures, latency, and abnormal call release rates.

1. KQI & QoE
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QoE
The QoE represents the end-user perception of a network on a macro level.
QoEs are those Key Performance Indicators which are critical to ensuring good end user perception.
QoEs are calculated from PM counters.
The reliability, granularity and accuracy of the data are critical and the data is collected continuously.
KQI
The KQI can be in the form of metrics that show how specific parts of a system perform
KQIs do not necessarily have an impact on QoEs and/or User perception.
The KQI data can be used as a reference indicator of network performance/behavior.
This data, typically PM counters, is normally collected continuously.

3. Key Quality Indicator
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Accessability
Retainability
Mobility
Utilization/availability
KQI
1. RRC setup success rate
2. ERAB setup success rate
3. Call setup success rate
1. Call drop rate (VoIP)
2. Service drop rate (All)
1. Intra_fre HO out success rate
2. Inter_fre HO out success rate
3. HO in success rate
1. RB utilizing rate
2. Average CPU load
3. Radio network unavailability
rate
Service intergrity
1. Cell download average
throughput
2. Cell uplink average throughput
Applicable for both Volte & Data
Accessibility
The ability of a service to be obtained, within specified
tolerances and other given conditions, when requested by
the user.
Retainability
The ability of a service, once obtained, to continue to be
provided under given conditions for a requested duration.
Integrity
The degree to which a service is provided without
excessive impairments, once obtained.
Mobility Performance of all handover types.
System
utilisation
Hardware usage, Licenses, Traffic and Load management
and Admission and congestion management
Availability Cell availability.

4. Quality of Experience
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Quality
Throughput
( All QCI)
Latency
QoE
Average CQI
Average MCS
Rank Indicator
Downlink User Throughput (DLUT) Avg/peak
Uplink User Throughput (ULUT) Avg/peak
Average Round Trip Time
Transition time from Idle to Active state
Session Set up success Rate ( SSSR)
Terminating Session Success Rate (Paging) (TSSR)
Minutes per Abnormal Release ( MAPR) Applicable for both Volte & Data
Recommended KPI User Impact
Quality
DL User Throughput High
UL User Throughput High
Latency ( Connected Mode) High
Transition time ( Idle Mode) High
Session Setup Success Rate High
Session Abnormal Release Rate High
Minutes per Abnormal Release High

5. KQI Defenition
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6. QoE Definitions
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• The Session Setup Success Rate (SSSR) is defined as the ratio of successful session setups, divided by the total number of session setup attempts.
• A combined metric which includes RRC, S1 and E-RAB establishment success.
• The Session Abnormal Release Rate (SARR) is defined as the ratio of abnormal session disconnections, divided by the total number of successful session setups.
• It is the probability of successfully holding and then terminating a data session from an end user perspective.
• The Minutes per Abnormal Release (MPAR) is defined as the ratio of the total end user time where a data session is maintained after being successfully set up divided by the abnormal call
disconnections.
• It represents the probable length of time a data session call can be held by the end user before it is abnormally terminated.
• The DL User Throughput (DLUT) is the average user throughput for data in the Downlink on a Radio Bearer.
• DLUT includes user data but excluding retransmissions, padding bits, data PDU headers and RLC control PDU's.
• The UL User Throughput (ULUT) is the average user throughput for data in the Uplink on a Radio Bearer.
• ULUT includes user data but excluding retransmissions, padding bits, data PDU headers and RLC control PDU's.
• The Round Trip Time (RTT) is defined as the time taken for an IP packet to travel from a UE through to a server located in the core network and back to the UE.
• The Control Plane Latency (Idle to Active) (CPL) is defined as the time taken for a UE to transition from an idle state to an active state.
• It is the time to initiate a new session when the UE starts in an idle mode.