UE MDT Reporting Structure for Selective Measurement Transfer

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Solution Overview

Problem

The existing method of sending minimization of drive test (MDT) measurement data from user equipment (UE) to a network results in large data files that drain UE battery power, incur significant RRC signaling overhead, and strain network resources due to segmentation, and require extensive filtering by the network.

Innovation Solution

The UE logs MDT measurement reports as separate files based on specific types requested by the network, reducing the need for a single large file transfer and minimizing RRC segmentation, thereby conserving battery power and network bandwidth.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If all MDT measurement types are collected and sent in a single large file, then the network receives comprehensive measurement data, but the UE battery power is drained and RRC signaling overhead increases

Engineering Contradiction:

Improvecompleteness of measurement dataVSAvoidUE battery power

Core Design Contradiction:

Loss of informationVSUse of energy by moving object

Solution Approach 1:

The patent divides the large MDT measurement data into multiple smaller files organized in a directory structure, where each file contains measurements of a specific type. The network can then request only the specific measurement types it needs, rather than receiving all measurements. This segmentation reduces the amount of data that needs to be transmitted and processed, thereby conserving UE battery power while still providing the network with the required measurement information.

Inventive Principle:

Principle #1Segmentation

2Loss of information

If all MDT measurement types are collected and sent in a single large file, then the network receives comprehensive measurement data, but RRC signaling overhead increases due to segmentation

Engineering Contradiction:

Improvecompleteness of measurement dataVSAvoidRRC signaling overhead

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The patent organizes MDT measurement data into a hierarchical file structure with a root directory containing measurement files organized by type (e.g., serving cell, neighbor cell, MBSFN). This structured segmentation allows the network to request specific measurement types without requiring the entire data set to be segmented and reassembled, reducing RRC signaling overhead while maintaining data completeness.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent enables the network to extract and request only the specific measurement types it needs from the organized file structure. By allowing selective extraction of required measurement data rather than transmitting all measurements, the system reduces the amount of data that requires segmentation and reassembly, thereby reducing RRC signaling overhead and complexity.

Inventive Principle:

Principle #2Taking out (Extraction)

3Loss of information

If all MDT measurement types are collected and sent in a single large file, then the network receives comprehensive measurement data, but network resources are strained due to segmentation

Engineering Contradiction:

Improvecompleteness of measurement dataVSAvoidnetwork bandwidth

Core Design Contradiction:

Loss of informationVSQuantity of substance

Solution Approach 1:

Inventive Principle:

Principle #2Taking out (Extraction)

4Loss of information

If all MDT measurement types are collected and sent in a single large file, then the network receives comprehensive measurement data, but extensive filtering by the network is required

Engineering Contradiction:

Improvecompleteness of measurement dataVSAvoidnetwork processing efficiency

Core Design Contradiction:

Loss of informationVSProductivity

Solution Approach 1:

The patent organizes MDT measurement data into a hierarchical file structure with a root directory containing measurement files organized by type (e.g., serving cell, neighbor cell, MBSFN). This pre-segmentation by measurement type eliminates the need for the network to filter through a single large file, as the data is already organized in a manner that allows direct access to specific measurement types, thereby improving network processing efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent performs the organization and segmentation of measurement data in advance, before the network requests specific measurements. By pre-organizing the data into a structured format with clear file naming conventions and directory organization, the system eliminates the need for the network to perform extensive filtering operations, thereby improving processing efficiency and reducing network workload.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12549986B2Structured minimization of drive test measurement data from a user equipment to a network

Publication Date: 2026.02.10 QUALCOMM INC

AI summary

Aspects for sending structured measurement data based on a specific type of measurement requested by a network are disclosed. A user equipment (UE) may receive a request from a base station for minimization of driving test (MDT) data corresponding to a specified type of measurement by the UE from a larger plurality of available MDT measurements that the UE can make. The UE can send the requested data including a structure report having results for the specified measurement type to the base station. In other aspects, a base station may send a request to a UE for minimization of driving test (MDT) data corresponding to a type of measurement by the UE. The base station may receive the requested data corresponding to the type of measurement.