LTE Measurement and Optimization Procedures

What This Covers

LTE measurement procedures define what the UE measures, when it reports, and how those reports support mobility decisions.

Optimization flows use measurement data for neighbor discovery, positioning support, and radio-performance analysis.

Use the links below to jump directly into measurement configuration, reporting, Event A/B flows, RSTD, GNSS, ANR, and application-layer measurement call flows.

Measurement Setup

Procedures that configure LTE measurement behavior and reporting rules.

• LTE Measurement Events Overview — Reference page for the LTE event families used in reporting and mobility decisions.
• LTE Measurement Configuration Procedure — Configures the LTE measurement framework.
• LTE Measurement Reporting Procedure — Reports measurement outcomes used for later decisions.

Intra-LTE Event Reporting

Event-based LTE measurements used for mobility and optimization handling.

• LTE Event A1 Measurement Procedure — Intra-LTE Event A1 measurement path.
• LTE Event A2 Measurement Procedure — Intra-LTE Event A2 measurement path.
• LTE Event A3 Measurement Procedure — Intra-LTE Event A3 measurement path.
• LTE Event A4 Measurement Procedure — Intra-LTE Event A4 measurement path.
• LTE Event A5 Measurement Procedure — Intra-LTE Event A5 measurement path.
• LTE Event A6 Measurement Procedure — Intra-LTE Event A6 measurement path.

Inter-RAT and Positioning Measurements

Measurement procedures used across radio technologies and positioning workflows.

• LTE Event B1 / B2 Inter-RAT Measurement Procedure — Inter-RAT measurement reporting path.
• LTE Inter-Frequency RSTD Measurement Indication — Positioning-oriented inter-frequency measurement indication.
• LTE GNSS Measurement Reporting — GNSS-related positioning measurement reporting.

Optimization and Analytics

Measurement procedures used for optimization and analytics workflows.

• LTE ANR-Related Neighbor Measurement Flow — Neighbor discovery and optimization measurement flow.
• LTE Application Layer Measurement Reporting — Application-layer measurement reporting path.

Related References

Related Sub-Procedures

• LTE Measurement Events Overview — Use this to compare event families before checking a single event flow.
• LTE Mobility and Handover Procedures — Open the mobility hub that uses measurement outcomes.
• LTE RRC States — Check whether measurement logic applies in the current state.

Related Message Reference Pages

• Measurement Report — Main LTE measurement message reference.
• System Information — Broadcast context that influences idle behavior and measurements.

Related Troubleshooting Pages

• RRC Measurements Cheat Sheet — Fast lookup for event conditions and thresholds.
• LTE UE Initial Access — Start earlier when the issue is before stable measurement handling.

Related LTE Categories

• Mobility and Handover Procedures
• RRC Connection and Security Procedures
• Failure Reporting and Troubleshooting Procedures

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