MBS Radio Bearer Configuration for PTP and PTM Service Modes

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Solution Overview

Problem

The existing 5G technologies primarily focus on unicast service scenarios, lacking a standardized point-to-multipoint service mode, which is essential for multicast broadcast services as user numbers and application scenarios expand.

Innovation Solution

A bearer configuration method and apparatus that enable the setup, management, and release of both point-to-point (PTP) and point-to-multipoint (PTM) radio bearers for multicast broadcast services (MBS), including context information management and service data adaptation protocol (SDAP) entities, using communication nodes and user equipment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If 5G technologies focus on unicast service scenarios (point-to-point), then service implementation is straightforward, but multicast broadcast services cannot be effectively supported

Engineering Contradiction:
Improveservice mode coverageVSAvoidbearer configuration complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the radio bearer configuration into distinct types: point-to-point (PTP) bearers for unicast services and point-to-multipoint (PTM) bearers for multicast broadcast services. This segmentation allows the system to handle different service modes independently, resolving the contradiction by enabling versatile service support through structured bearer types while maintaining manageable configuration complexity through clear differentiation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic bearer configuration where the network can selectively establish PTP or PTM bearers based on service requirements. The system dynamically adapts the bearer type according to whether unicast or multicast services are needed, allowing flexible service mode coverage while keeping the configuration process systematic and controlled through dynamic decision-making rather than static rigid structures.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If point-to-multipoint service mode is implemented for multicast broadcast services, then service versatility improves, but bearer management complexity increases

Engineering Contradiction:
Improvemulticast broadcast service supportVSAvoidcontext information management complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments context information management into separate handling for PTP and PTM bearers. By creating distinct management pathways for unicast and multicast services, the system achieves versatile multicast broadcast support while preventing management complexity from becoming unmanageable through structured separation of concerns.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces context information as an intermediary layer that mediates between the network and the diverse bearer types. This intermediary structure standardizes the management interface for both PTP and PTM bearers, enabling versatile multicast service support while simplifying complexity through a unified management framework that handles different bearer types through consistent procedures.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If both PTP and PTM bearers are configured for MBS, then service coverage is improved, but system complexity increases

Engineering Contradiction:
Improveservice scenario coverageVSAvoidbearer configuration and management complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent creates a universal bearer configuration framework that handles both PTP and PTM bearers through standardized procedures. The system achieves multi-functionality by designing configuration, management, and release mechanisms that work for both bearer types, thereby improving service scenario coverage while controlling complexity through universal design principles rather than separate specialized systems.

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

Solution Approach 2:

The patent merges the configuration and management of PTP and PTM bearers into a unified system architecture. By combining the handling of different bearer types under common protocols and procedures, the system achieves comprehensive service scenario coverage while reducing overall complexity through consolidation and standardization rather than maintaining separate independent systems.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS12484111B2Bearer configuration method and device
Publication Date: 2025.11.25 ZTE CORP
  • US12484111B2 patent drawing
  • US12484111B2 patent drawing
  • US12484111B2 patent drawing

AI summary

Provided are a bearer configuration method and apparatus, a context message management method and apparatus, a releasing method and apparatus, a device, and a storage medium. The bearer configuration method includes receiving first information and configuring a radio bearer of an MBS based on the first information. The radio bearer includes a point-to-point (PTP) bearer and/or a point-to-multipoint (PTM) bearer.