User Equipment State Synchronization via Idle Switching

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Solution Overview

Problem

In wireless communication systems, user equipment often experiences excessive battery consumption and synchronization issues due to being logged as idle when it is actually in a connected state, leading to degraded user experience and communication disruptions.

Innovation Solution

The user equipment autonomously switches to the idle state upon detecting messages that should not be generated while logged as connected, and then re-establishes the connected state as necessary to synchronize with the network, using techniques such as monitoring signaling channels and sending connection establishment messages.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the user equipment operates in idle state to save power, then energy consumption is reduced, but communication reliability deteriorates when the equipment should actually be in connected state

Engineering Contradiction:
Improvebattery consumptionVSAvoidcommunication reliability
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The user equipment monitors downlink signaling channels for messages that indicate network-side state expectations. When such messages are detected, the equipment feeds back to itself that a state synchronization issue exists, triggering a transition to connected state to resolve the mismatch between actual and logged states.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The user equipment autonomously detects state synchronization issues by monitoring its own received messages and automatically transitions between idle and connected states without requiring external network commands, enabling self-correction of state mismatches.

Inventive Principle:
Principle #25Self-service

2Measurement precision

If the user equipment monitors signaling channels to detect state mismatches, then state synchronization accuracy is improved, but device complexity increases

Engineering Contradiction:
Improvestate synchronization accuracyVSAvoidmonitoring complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The existing downlink signaling channel monitoring function, originally designed for other purposes, is extended to also detect state synchronization issues. This multi-functional use of existing infrastructure avoids adding separate dedicated monitoring systems, thereby limiting complexity increase.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Reliability

If the user equipment autonomously transitions to idle state and re-establishes connection, then state synchronization is improved, but communication interruption increases

Engineering Contradiction:
Improvestate synchronizationVSAvoidcommunication interruption
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The user equipment performs preliminary monitoring of downlink signaling channels to detect state synchronization issues before they cause communication failures. By detecting and correcting the mismatch early, the system prevents more severe communication interruptions that would occur if the equipment remained in the wrong state longer.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP2832178B1Apparatus and method for operational state synchronization in a wireless communication system
Publication Date: 2019.01.02 GOOGLE TECHNOLOGY HOLDINGS LLC
  • EP2832178B1 patent drawingFigure 1~2
  • EP2832178B1 patent drawingFigure 3~5
  • EP2832178B1 patent drawingFigure 6~7

AI summary

A method (300) and user equipment (110) that are for operation in a wireless communication system (100) maintain system state synchronization between a fixed network (130) of the wireless communication system and the user equipment by performing a receipt (305) of a message from a network station (105) while the user equipment is in a connected state (220); a determination (310) that the message includes an address of the user equipment and that the message is a message that should not be generated while the fixed network has the user equipment logged as being in the connected state; and a switching (315) of the user equipment to an idle state (215).