User Terminal Radio Link Failure Recording and Reporting

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Solution Overview

Problem

Radio link failures in user terminals, such as poor network signals or handover failures, lead to suboptimal communication performance in communication systems, affecting both the user terminal and the overall communication system.

Innovation Solution

A method is introduced where user terminals record radio link failure information and report it to network devices when entering a connected or inactive state in a current cell, allowing network devices to receive and forward this information to the appropriate cell for network optimization, including adjustments to transmission power, antenna arrays, or cell coverage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If radio link failure information is not collected and analyzed, then network devices cannot optimize transmission parameters, but communication performance deteriorates due to repeated failures

Engineering Contradiction:

Improvecommunication performanceVSAvoidradio link failure information

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The user terminal records radio link failure information in advance by detecting failure conditions (such as handover failures or poor signal conditions) and storing relevant parameters (cell IDs, signal strengths, timestamps) before network optimization can occur. This preliminary data collection enables subsequent analysis and optimization actions.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The recorded radio link failure information is reported back to the network device, creating a feedback loop. The network device uses this feedback to analyze failure patterns and adjust transmission parameters (power, antenna arrays, cell coverage) to improve communication performance and prevent repeated failures.

Inventive Principle:

Principle #23Feedback

2Reliability

If the user terminal continuously monitors and reports all radio link conditions, then network optimization can be achieved, but device complexity and energy consumption increase

Engineering Contradiction:

Improvenetwork optimization capabilityVSAvoidmonitoring and reporting mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Instead of continuously monitoring all radio link parameters, the user terminal focuses monitoring efforts on specific failure conditions and critical parameters only when radio link failure is detected. This localized approach reduces overall device complexity and energy consumption while maintaining the ability to provide meaningful optimization data.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The system implements partial monitoring by only activating detailed radio link failure information collection when failure conditions are detected, rather than continuously monitoring all parameters. This partial action approach balances optimization capability with reduced device complexity and energy usage.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS11382160B2Method of processing radio link failure, user terminal and network device

Publication Date: 2022.07.05 VIVO MOBILE COMM CO LTD

AI summary

Embodiments of the present disclosure provide a method of processing radio link failure, a user terminal and a network device. The method includes: recording radio link failure information of a radio link failure that occurs in the user terminal; when the user terminal enters a connected state or an inactive state in a current cell, reporting the radio link failure information to a network device.