Uplink Mobility via Virtualized ID Decoupling Physical Channels

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Solution Overview

Problem

Current wireless communication systems face challenges in efficiently managing uplink mobility, particularly in maintaining communication services as user equipment (UE) moves within the network coverage area, as existing methods require physical channels like PKACH and PCICH, which can be resource-intensive and lead to higher handover failure rates.

Innovation Solution

The implementation of uplink-based mobility using a UL-based mobility specific ID, which is an abstracted or virtualized communication resource, decoupled from physical cell identifiers, allowing for efficient decoding and channel management without relying on PKACH and PCICH channels, and utilizing alternative channels like PSFICH or PDCCH for acknowledgments and paging indications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If physical channels PKACH and PCICH are used for uplink mobility, then communication services can be maintained during UE movement, but network resource usage increases and handover failure rates increase

Engineering Contradiction:
Improvehandover failure rateVSAvoidnetwork resource usage
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent extracts the mobility management function from dedicated physical channels (PKACH, PCICH) and implements it through virtualized channel access using a specific ID. This removes the dependency on resource-intensive physical channels while maintaining mobility support, thereby reducing network resource usage and handover failure rates.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the parameter representation from physical channel identifiers to a virtualized specific ID that enables channel access without requiring traditional physical channel resources. This parameter transformation allows mobility management to occur with reduced resource consumption.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If physical channels PKACH and PCICH are used for uplink mobility, then mobility tracking can be performed, but device complexity and power consumption increase

Engineering Contradiction:
Improvemobility tracking efficiencyVSAvoidchannel management complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent creates a virtualized version of channel access mechanisms using a specific ID, which copies the essential functionality of physical channel management without requiring the actual physical channel infrastructure. This simplifies device complexity while maintaining mobility tracking capability.

Inventive Principle:
Principle #26Copying

3Quantity of substance

If abstracted communication resources like UL-based mobility specific ID are used, then network resource usage is reduced, but compatibility with existing physical channel infrastructure may be compromised

Engineering Contradiction:
Improvenetwork resource usageVSAvoidchannel compatibility
Core Design Contradiction:
Quantity of substanceVSAdaptability or versatility

Solution Approach 1:

The patent implements a universal specific ID mechanism that can operate across different channel types and configurations. This specific ID serves multiple functions including channel access, mobility tracking, and handover management, making the system adaptable to various infrastructure configurations while maintaining resource efficiency.

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

Data Source

PatentEP3516892B1Uplink based mobility
Publication Date: 2023.12.20 QUALCOMM INC
  • EP3516892B1 patent drawingFigure 1
  • EP3516892B1 patent drawingFigure 2
  • EP3516892B1 patent drawingFigure 3

AI summary

Systems and methods for enabling and providing uplink based mobility procedures are disclosed. Embodiments provide uplink based mobility procedures in which one or more physical channel typically used to facilitate uplink based mobility is not utilized.