What are LTE KPIs: Key Performance Indicators

A Key Performance Indicator (KPI) is a measurable value used to evaluate the effectiveness of an organization, process, project or system in achieving specific objectives. KPIs help businesses monitor performance, track progress, optimize operations and make data driven decisions aligned with strategic goals. This page describes different categories of LTE KPIs and various test cases under each category.

KPIs are valuable tools that can be used for the following tasks:

To monitor and optimize radio network performance, aiming to provide better subscriber quality and make efficient use of installed network resources.
To immediately detect unacceptable performance-related issues in the cellular network. This allows operators to take swift action to maintain the quality of existing network services.
To provide radio frequency planners with detailed information to help them configure network parameters for optimal use.

Typically, KPIs can be categorized into the following subcategories:

Accessibility
Retainability
Integrity
Availability
Mobility

What are LTE KPIs?

The following table summarizes KPIs for LTE RAN (Radio Access Network). These are used to measure contributions to subscriber-perceived quality and overall system performance. RAN performance monitoring and control is a very important task for O&M teams and network engineers.

LTE KPI Test Cases

LTE KPI Category	Test Case	Description
Accessibility	RRC Connection Establishment
	Random Access
	Initial E-RAB Establishment Success Rate
	RRC Connection Establishment Counters
	Initial E-RAB Establishment Success Rate Counters
	Added E-RAB Establishment Success Rate Counters
	Added E-RAB Establishment Success Rate
	S1 Signaling Connection Establishment
Retainability	MME Initiated E-RAB & UE Context Release with counters Description	UE Session Time
	RBS Initiated E-RAB & UE Context Release with counters Description
	MME & RBS Initiated UE Context Release Flow Chart
	MME & RBS Initiated E-RAB Release Flow Chart
Integrity	EUTRAN Throughput KPIs
	EUTRAN Latency KPIs
	EUTRAN Packet Loss KPIs
Mobility	X2 Based Handover Preparation & Execution
	Intra RBS Handover Preparation & Execution
	Intra Frequency Handover Preparation & Execution Counters
	S1 Based Handover Preparation & Execution
	Intra-frequency intra-LTE S1 & X2 Handover Flowchart
	Inter Frequency Handover Preparation & Execution Counters
	Inter-frequency intra-LTE S1 & X2 Handover Flowchart
Availability	Partial cell availability (node restarts excluded)