MBS Reception Status Reporting for Unicast-Multicast Switching
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Solution Overview
Problem
Existing multicast and broadcast services in mobile communication technologies face challenges in dynamically changing transmission modes to ensure service continuity, reliability, and radio resource efficiency, particularly in scenarios requiring high reliability and power saving, such as mission-critical services and IoT applications.
Innovation Solution
Enabling user equipment (UE) to report reception status of multicast and broadcast services, allowing the network to efficiently switch between unicast and multicast transmission modes based on UE measurements and configured thresholds, using protocols like RRC, MAC CE, and PHY layer signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the network uses multicast transmission mode for broadcast services, then radio resource efficiency is improved, but service reliability deteriorates when UE reception conditions are poor
Solution Approach 1:
The patent implements dynamic switching between unicast and multicast transmission modes based on real-time UE reception conditions. The network node monitors measurement results from UEs and dynamically changes the transmission mode for MBS data, allowing the system to adapt to varying channel conditions and maintain both resource efficiency and service reliability.
Solution Approach 2:
The patent establishes a feedback mechanism where UEs report measurement results (such as RSRP, RSRQ, or SINR) to the network node. Based on this feedback and configured thresholds, the network node determines the appropriate transmission mode, enabling reliable decision-making that balances resource efficiency and service quality.
2Reliability
If the network switches transmission modes dynamically, then service reliability is improved, but device complexity increases due to additional measurement and reporting requirements
Solution Approach 1:
The patent applies partial action by implementing mode switching only when necessary based on configured thresholds. The network node configures specific threshold values for measurement results, and switching occurs only when measurements cross these thresholds, avoiding unnecessary switching operations and reducing overall system complexity while maintaining reliability.
Solution Approach 2:
The patent changes the parameter of transmission mode (unicast/multicast) based on measurement parameters (RSRP, RSRQ, SINR) comparing against configured thresholds. This parameter-based approach provides a structured and manageable complexity level, as the decision logic relies on simple threshold comparisons rather than complex algorithms.
3Reliability
If the network uses unicast transmission mode to ensure service continuity, then service reliability is improved, but radio resource efficiency deteriorates
Solution Approach 1:
The patent implements dynamic transmission mode selection that transitions between unicast and multicast based on real-time conditions. When UE reception conditions are good, the system uses multicast for resource efficiency; when conditions deteriorate below configured thresholds, it switches to unicast for service continuity, optimizing the trade-off between reliability and resource usage.
Solution Approach 2:
The patent changes the transmission mode parameter based on measured signal quality parameters. By monitoring parameters such as RSRP, RSRQ, or SINR and comparing them against configured thresholds, the system dynamically adjusts between unicast and multicast modes, achieving both service continuity and radio resource efficiency under different operating conditions.
4Adaptability or versatility
If the network configures multiple thresholds for mode switching, then adaptability is improved, but device complexity increases due to configuration management
Solution Approach 1:
The patent segments the threshold configuration into multiple independent threshold values for different measurement parameters (e.g., first threshold for RSRP, second threshold for RSRQ, third threshold for SINR). This segmentation allows flexible and adaptable configuration for different service requirements while maintaining manageable complexity through modular threshold management.
Solution Approach 2:
The patent creates a universal threshold configuration mechanism that can be applied to different measurement parameters and service types. The same threshold comparison logic works for various measurement types (RSRP, RSRQ, SINR), providing adaptability across different scenarios while using a unified configuration approach that simplifies management.
Data Source
AI summary
Methods, apparatus, and systems that enable reporting of reception status associated with a Multicast and Broadcast Service are provided. In one example aspect, a method for wireless communication includes receiving, by a communication device from the network node, configuration information that configures information indicating a reception status of a multicast and broadcast service. Data for the multicast and broadcast service is carried in one or more bearers. The method also includes transmitting, by the communication device, the information indicating the reception status to the network node based on a result the measurement.