Multicast Unicast Convergence via Unified Measurement Reports

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Solution Overview

Problem

Current wireless communication systems face challenges in efficiently managing multicast and unicast communications, particularly in dynamically switching between them based on signal measurements from multiple cells.

Innovation Solution

The method involves transmitting measurement reports from user equipment (UE) to a base station, which then requests the setup or release of unicast or multicast radio bearers, or switches between them based on the reported measurements, ensuring that unicast and multicast PDU sessions correspond to the same content from the same origin server.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the system dynamically switches between multicast and unicast communications based on signal measurements, then network flexibility and user experience are improved, but the complexity of managing radio bearers and sessions increases

Engineering Contradiction:

Improvenetwork flexibilityVSAvoidradio bearer management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges multicast and unicast PDU sessions by making them correspond to the same content from the same origin server. The base station consolidates bearer management by receiving a single measurement report from the UE and making coordinated decisions about both multicast and unicast bearers based on that unified input, rather than managing them as separate independent systems.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The measurement report mechanism serves multiple functions: it triggers both multicast and unicast bearer setup/release decisions, and it coordinates the switching between multicast and unicast modes. This multi-functional approach reduces the need for separate control mechanisms for each bearer type.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If the base station manages separate multicast and unicast bearers independently, then each bearer can be optimized individually, but the overall system coordination and efficiency deteriorate

Engineering Contradiction:

Improvebearer optimizationVSAvoidsystem coordination efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system uses measurement reports from the UE as feedback to the base station, which then makes coordinated decisions about both multicast and unicast bearers. This feedback loop ensures that bearer management decisions are based on current signal conditions while maintaining system-wide coordination, as the base station processes all bearer decisions in response to the same measurement input.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent combines the management of multicast and unicast bearers under a unified control framework at the base station. By making both bearer types correspond to the same content from the same origin server and managing them through coordinated setup/release requests based on a single measurement report, the system achieves both individual optimization and overall coordination.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12279334B2Techniques for multicast and unicast convergence in wireless communications

Publication Date: 2025.04.15 QUALCOMM INC

AI summary

Aspects described herein relate to managing and/or configuring, for a user equipment (UE), unicast and/or multicast radio bearers for unicast and/or multicast cells based on measurement reports generated by the UE.