Multicast Broadcast Signaling with CORESET, BWP, and RNTI Mapping

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing multicast and broadcast services, particularly in configuring and receiving multicast broadcast services associated with control resource sets and bandwidth parts, as well as radio network temporary identifiers, which affect the delivery of downlink control information and transport blocks.

Innovation Solution

A wireless communication method that involves receiving configuration parameters for multicast broadcast services, including control resource sets, bandwidth parts, and radio network temporary identifiers, to facilitate the reception of downlink control information and transport blocks, enhancing the delivery of multicast broadcast services.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If configuration parameters for multicast broadcast services are received and processed, then the delivery efficiency of multicast broadcast services is improved, but the device complexity and processing overhead increase

Engineering Contradiction:
Improvemulticast broadcast service delivery efficiencyVSAvoidconfiguration processing complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The configuration parameters are segmented into distinct components including control resource set associations, bandwidth part associations, and RNTI associations. Each segment is processed independently through separate receiving modules, allowing the system to manage complexity by dividing the overall configuration task into smaller, more manageable parts while maintaining comprehensive service delivery capability

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system performs preliminary configuration by receiving and storing all necessary parameters (control resource set associations, bandwidth part associations, RNTI associations) before actual multicast broadcast service delivery. This preliminary action ensures that when services need to be delivered, the configuration is already in place, improving delivery efficiency without requiring complex real-time processing

Inventive Principle:
Principle #10Preliminary action

2Reliability

If multiple RNTIs are associated with multicast broadcast services, then the reliability of downlink control information reception is improved, but the information management complexity increases

Engineering Contradiction:
Improvedownlink control information reception reliabilityVSAvoididentifier management complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system implements a universal association mechanism where RNTIs are linked to multicast broadcast services through standardized configuration parameters. This multi-functional approach allows the same configuration structure to handle multiple RNTIs and multiple services uniformly, improving reliability through redundant associations while keeping management complexity manageable through consistent processing rules

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

Solution Approach 2:

The system uses RNTI associations as configurable parameters that can be replicated and referenced across multiple services and bandwidth parts. Instead of creating complex unique mappings, the system copies and reuses RNTI association configurations, ensuring reliable reception through multiple reference points while simplifying management through configuration reuse

Inventive Principle:
Principle #26Copying

3Adaptability or versatility

If configuration parameters are received for multiple bandwidth parts, then the versatility of multicast broadcast service support is improved, but the processing time and energy consumption increase

Engineering Contradiction:
Improvebandwidth part configuration versatilityVSAvoidconfiguration processing time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system receives configuration parameters in a structured, periodic manner organized by bandwidth part associations. Each bandwidth part configuration follows a standardized pattern that can be processed in regular intervals, allowing the system to support multiple bandwidth parts with predictable processing time rather than unpredictable sequential processing

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system manages versatility through parameter configuration rather than structural changes. By receiving bandwidth part associations as configurable parameters, the system can adapt to different bandwidth part configurations without fundamental processing changes, reducing processing time through consistent parameter-based management across diverse service requirements

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20250301282A1Multicast and broadcast configuration signaling
Publication Date: 2025.09.25 TOYOTA JIDOSHA KK
  • US20250301282A1 patent drawing
  • US20250301282A1 patent drawing
  • US20250301282A1 patent drawing

AI summary

A system, method and apparatus for mobile communications is provided. A user equipment (UE) receives one or more messages that include configuration parameters indicating that one or more multicast broadcast services are associated illustratively with a first control resource set (CORESET) and a first bandwidth part (BWP). The messages also include one or more first radio network temporary identifiers (RNTIs) associated with the one or more multicast broadcast services. The UE then receives via the first CORESET or the first BWP downlink control information associated with the one or more first RNTIs. The UE then received one or more transport blocks associated with the one or more multicast broadcast services.