Location-Aware MDT Measurement Filtering for UE Memory

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current MDT measurements in LTE/NR networks often lack location information, leading to less valuable data collection, occupation of UE memory, and increased RRC resource consumption.

Innovation Solution

Implementing configurations that allow MDT measurements to be performed and reported only when location information is available, using indicators like LocationInfoOption in LoggedMeasurementConfiguration and UeInformationRequest messages to filter and report location-tagged measurements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If MDT measurements are collected without location information filtering, then the quantity of collected measurements increases, but the value of collected data decreases and UE memory is wasted

Engineering Contradiction:

Improvequantity of MDT measurementsVSAvoidvalue of collected data

Core Design Contradiction:

Quantity of substanceVSLoss of information

Solution Approach 1:

The network configures the UE with location information filtering capability before MDT measurement collection. The UE is pre-configured to check location information availability and only store measurements with valid location data, preventing waste of storage resources on invalid measurements.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent applies different quality standards to different MDT measurements based on their location information status. Measurements with valid location information are stored and reported, while those without location information are filtered out, ensuring that only high-quality data occupies UE memory.

Inventive Principle:

Principle #3Local quality

2Loss of information

If all MDT measurements are reported to the network, then the completeness of measurement data increases, but the network resource consumption increases

Engineering Contradiction:

Improvecompleteness of measurement dataVSAvoidnetwork resource consumption

Core Design Contradiction:

Loss of informationVSLoss of energy

Solution Approach 1:

The patent extracts and removes MDT measurements that lack location information from the reporting set. The UE filters out invalid measurements before reporting, so only measurements with valid location information are transmitted to the network, reducing unnecessary resource consumption.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The filtering of invalid MDT measurements is performed in advance at the UE side before reporting. This preliminary action prevents wasteful transmission of invalid data over the air interface, conserving both UE and network resources.

Inventive Principle:

Principle #10Preliminary action

3Quantity of substance

If MDT measurements without location information are collected, then the total measurement quantity increases, but the productivity of measurement collection decreases

Engineering Contradiction:

Improvetotal measurement quantityVSAvoidproductivity of measurement collection

Core Design Contradiction:

Quantity of substanceVSProductivity

Solution Approach 1:

The patent changes the selection criterion parameter for MDT measurement collection from unconditional collection to conditional collection based on location information availability. This parameter change ensures that only measurements meeting the location information requirement are collected, improving the effectiveness of measurement collection.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250220483A1Filtering MDT measurements based on location

Publication Date: 2025.07.03 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

Various embodiments of the present disclosure provide a method for Minimization of Drive Test (MDT) measurement. The method comprises receiving a configuration from a network node. The configuration indicates the terminal device to perform Minimization of Drive Test (MDT) measurement and/or store the MDT measurement result only when location information is available, and/or indicates the terminal device to report only location information tagged MDT measurements.