Terminal Handover Failure Measurement Logging for Network Optimization

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

In wireless communication systems, handover failures due to coverage holes are not effectively detected, as the network lacks information on when, how, and where the failure occurs, hindering optimal network setup and mobility management.

Innovation Solution

A method where a terminal logs measurement results during handover failures and transmits them to the network, allowing for minimal driving tests and improved network setup through the MDT scheme.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the network performs extensive driving tests to detect handover failures, then measurement precision improves, but loss of time and productivity deteriorate

Engineering Contradiction:

Improvehandover failure detection accuracyVSAvoidnetwork setup time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The terminal performs measurement logging in advance during normal operation and stores measurement results before handover failure occurs. When handover failure is detected, the pre-stored measurement results are immediately transmitted to the network, eliminating the need for time-consuming post-failure measurements and enabling rapid network optimization.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the network conducts comprehensive driving tests to optimize network setup, then reliability improves, but productivity deteriorates

Engineering Contradiction:

Improvenetwork setup effectivenessVSAvoidnetwork optimization efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The terminal autonomously performs measurement logging, detects handover failures, stores measurement results, and transmits them to the network without requiring external intervention. This self-service mechanism enables the network to obtain reliable failure detection data instantaneously, eliminating the need for extensive manual driving tests and significantly improving optimization productivity.

Inventive Principle:

Principle #25Self-service

3Measurement precision

If the network implements detailed mobility management through extensive testing, then measurement precision improves, but device complexity increases

Engineering Contradiction:

Improvemobility management data accuracyVSAvoidnetwork testing system complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The measurement logging and failure detection functionality is extracted from the network side and implemented in the terminal. The terminal independently logs measurements, detects handover failures, and reports results to the network, simplifying the network system while maintaining high measurement precision through terminal-based data collection.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS8880078B2Method of logging measurement result at handover failure in wireless communication system

Publication Date: 2014.11.04 LG ELECTRONICS INC

AI summary

Disclosed is related to a wireless communication system and a mobile terminal providing a wireless communication service and to a method by which a base station and a mobile terminal transmit and receive data in an evolved universal mobile telecommunications system (E-UMTS) evolved from universal mobile telecommunications system (UMTS), a long term evolution (LTE) system, or a LTE-advanced (LTE-A) system and more particularly, to a method of logging a measurement result at a handover failure.