Cell Switching Configuration for Selective L2 Reset and Recovery

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Solution Overview

Problem

Existing wireless communication systems face inefficiencies in determining whether a reset and/or recovery procedure is required during cell switching, particularly when switching between cells in different or same cell groups, leading to suboptimal mobility management.

Innovation Solution

Implementing configuration parameters to identify cell groups and compare parameters associated with the source and target cells to determine if a layer 2 reset and/or packet data convergence protocol recovery is necessary, thereby optimizing cell switching procedures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the wireless device performs reset and recovery procedures after every cell switch, then the reliability of communication is improved, but the loss of time and productivity deteriorate due to unnecessary operations

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidtime loss from unnecessary reset procedures

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent changes the parameter of cell group identification (comparing cell group IDs of source and target cells) to determine whether reset procedures are necessary. By monitoring this parameter, the system performs reset operations only when cell group IDs differ, avoiding unnecessary time loss while maintaining communication reliability when needed.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The wireless device autonomously determines whether to perform reset and recovery procedures by comparing cell group identification parameters itself, without requiring external network instructions for each cell switch. This self-service approach reduces time loss by eliminating unnecessary network signaling and enables immediate determination of required procedures.

Inventive Principle:

Principle #25Self-service

2Reliability

If the wireless device performs reset and recovery procedures after every cell switch, then the reliability of communication is improved, but the device complexity increases due to additional procedure management

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidcomplexity of reset procedure management

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent simplifies device complexity by changing from complex procedure-based determination to simple parameter comparison (cell group ID equality check). The wireless device only needs to compare two identification parameters to determine whether reset procedures are needed, significantly reducing the complexity of procedure management while maintaining reliability.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If configuration parameters are provided for cell group identification, then the measurement precision of determining reset necessity is improved, but the loss of information increases due to additional configuration requirements

Engineering Contradiction:

Improveprecision of determining reset necessityVSAvoidconfiguration information overhead

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The patent achieves high measurement precision in determining reset necessity by using cell group identification parameters that are already configured for other purposes (cell grouping for mobility management). This approach provides precise determination without additional information overhead, as the identification parameters are part of existing cell configuration rather than new separate configurations.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12615567B2Configuration for layer 1 or layer 2 triggered mobility (LTM) for cell switching

Publication Date: 2026.04.28 COMCAST CABLE COMM LLC

AI summary

A wireless device may switch from a source cell to a target cell after receiving a cell switch command. The wireless device may determine whether to perform a reset and/or recovery procedure based on whether the source cell and the target cell are in a same cell group. One or more configuration parameters may be used to indicate whether to perform a reset and/or recovery procedure.