Idle Mode MDT Configuration Update for Wireless UE

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Solution Overview

Problem

In wireless communication systems, user equipment (UE) needs to frequently switch between connected and idle modes to modify or set minimization of drive test (MDT) configurations, leading to increased power consumption and wastage of network resources.

Innovation Solution

A method that allows user equipment to update and perform MDT configurations directly in the idle mode without switching to the connected mode, by receiving modify or setup signals from the base station, enabling the UE to modify or set specific logged MDTs according to updated parameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the UE switches to connected mode to receive MDT configuration modifications or setup signals from the network, then the network can control the UE's MDT operation, but the UE consumes more power and network resources are wasted due to frequent mode switching

Engineering Contradiction:

Improvenetwork control capabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The network pre-configures MDT parameters and measurement configurations while the UE is in connected mode. These configurations are stored in the UE and automatically executed when the UE transitions to idle mode, eliminating the need for frequent mode switching to receive new configurations.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces a mechanism where the network can send configuration modification signals to the UE in idle mode through paging or other idle-mode signaling channels, acting as an intermediary that enables control without requiring full connected mode activation.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the UE frequently switches between connected and idle modes to update MDT configurations, then the network can maintain up-to-date measurement configurations, but network resources are wasted due to the switching overhead

Engineering Contradiction:

Improveconfiguration update capabilityVSAvoidnetwork resource waste

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

MDT configurations are pre-established and stored in the UE before idle mode entry. The configurations include measurement parameters, reporting criteria, and execution timing, allowing the UE to autonomously perform measurements without requiring frequent network interactions.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The UE autonomously executes MDT measurements and manages its own measurement activities based on pre-configured parameters while in idle mode, reducing the need for continuous network control and minimizing network resource consumption.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS9049615B2Method of controlling minimization of drive tests

Publication Date: 2015.06.02 ACER INC

AI summary

A user equipment is configured to operate in an idle mode according to an MDT configuration. When receiving a modify/setup signal from a base station, the user equipment is configured to update the MDT configuration accordingly in the idle mode and perform one or multiple corresponding logged MDTs according to the updated MDT configuration.