Mobile Terminal Mobility State Detection via Continuous Event Counting

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Solution Overview

Problem

Current wireless communication systems face challenges in accurately detecting mobility states of mobile communication terminals, leading to suboptimal operation parameters and performance, especially during transitions between idle and connected modes and changing channel conditions.

Innovation Solution

A method and apparatus for mobile communication terminals that maintain a count of mobility events over a predefined interval, regardless of transitions between idle and connected modes, to select and configure operation parameters such as reselection thresholds and measurement reporting times based on the determined mobility state, using a control unit and transceiver to adapt to changing conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the terminal resets the mobility event count during transitions between idle and connected modes, then the device complexity is reduced and operation is simplified, but the measurement precision of mobility state detection deteriorates

Engineering Contradiction:
Improveoperation simplicityVSAvoidmobility state detection accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent segments the mobility event counting process into mode-independent continuous counting and mode-specific parameter application. The counter continues accumulating mobility events across mode transitions without resetting, while different operation parameters are selectively applied based on the current mode. This segmentation allows the counting function to remain simple and continuous while the parameter application adapts to mode-specific requirements, resolving the contradiction between operational simplicity and measurement precision.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a new dimension of mode-independent continuous counting that operates independently of the idle/connected mode transitions. Instead of resetting the counter in each mode (one-dimensional mode-specific counting), the system maintains a continuous count across modes (adding a time-continuity dimension), while still applying mode-specific parameters when needed. This dimensional approach preserves measurement accuracy without significantly increasing operational complexity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Measurement precision

If the terminal maintains continuous mobility event count across mode transitions, then the measurement precision of mobility state detection is improved, but the device complexity increases

Engineering Contradiction:
Improvemobility state detection accuracyVSAvoidoperation complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts the counting function from the mode-management function. The mobility event counter operates as an independent continuous process that is not coupled to mode transitions, while mode-specific parameter applications are extracted as separate conditional operations. This extraction reduces the complexity burden by separating the continuous measurement task from the discrete mode-transition logic, making the overall system easier to manage despite the continuous counting requirement.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent implements preliminary configuration of mode-specific parameters based on the continuous mobility state. The system pre-establishes parameter sets for different modes and selectively applies them based on the continuously accumulated mobility event count, rather than resetting and re-evaluating mobility state in each mode transition. This preliminary preparation reduces operational complexity by avoiding repeated full mobility state assessments during mode transitions.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If the terminal frequently updates operation parameters based on mobility events, then the adaptability to changing channel conditions is improved, but the loss of time for parameter reconfiguration increases

Engineering Contradiction:
Improveadaptability to channel conditionsVSAvoidparameter reconfiguration time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent implements periodic or event-triggered parameter updates based on the continuous mobility event count rather than continuous reconfiguration. The system monitors the accumulated mobility events and updates operation parameters at defined intervals or when threshold-based mobility states are reached, rather than continuously adapting parameters with every mobility event. This periodic approach maintains adaptability to channel conditions while reducing the time loss associated with frequent parameter reconfigurations.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent applies partial parameter updates based on the continuous mobility state, updating only those parameters that are mobility-dependent rather than reconfiguring the entire terminal operation. This selective partial updating maintains adaptability to changing channel conditions by adjusting relevant parameters while avoiding unnecessary full reconfiguration cycles, thereby reducing the time loss without sacrificing adaptability.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS9191892B1Enhanced mobility state detection in mobile communication terminals
Publication Date: 2015.11.17 ASR MICROELECTRONICS CO LTD
  • US9191892B1 patent drawing
  • US9191892B1 patent drawing
  • US9191892B1 patent drawing

AI summary

A method in a mobile communication terminal, which operates alternately in an idle mode and a connected mode, includes maintaining a count of mobility events in which the terminal switches to camp on a cell. The count is retained irrespective of transitions of the terminal into and out of the idle mode and the connected mode. A mobility state is selected for the terminal depending on the count, and operation of the terminal is configured based on the selected mobility state.