Dynamic Coordination of Multicast and Unicast via Shared PDSCH
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in coordinating multicast/broadcast (MB) communications with unicast communications, leading to wastage of channel, signaling, and processing resources due to inflexible configurations.
Innovation Solution
A base station and user equipment (UE) can dynamically coordinate between MB and unicast communications by using a shared physical downlink shared channel (PDSCH) and switching between multicast/broadcast radio bearers (MRB) and dedicated radio bearers (DRB) based on configuration and feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If inflexible configurations are used for coordinating MB and unicast communications, then device complexity is reduced, but resource efficiency deteriorates due to wastage of channel, signaling, and processing resources
Solution Approach 1:
The patent implements dynamic coordination between MB and unicast communications by enabling the gNB to flexibly switch between different communication modes (MB-only, unicast-only, or coordinated mode) based on real-time network conditions, traffic patterns, and UE requirements. This dynamic approach allows the system to adapt configurations rather than using fixed inflexible settings, thereby improving resource efficiency while maintaining manageable device complexity through automated decision-making algorithms
2Productivity
If MB and unicast communications share the same PDSCH, then resource utilization improves, but coordination complexity increases due to the need to manage both communication types simultaneously
Solution Approach 1:
The patent segments the coordination management into distinct functional modules: MB communication management, unicast communication management, and a coordination controller that makes switching decisions. This segmentation allows each module to handle its specific communication type independently while the controller orchestrates between them, reducing overall coordination complexity while maintaining high resource utilization through the shared PDSCH
Solution Approach 2:
The patent introduces a coordination controller as an intermediary element that mediates between MB and unicast communication management. This intermediary receives inputs from both communication types, makes intelligent switching decisions based on configured parameters and real-time conditions, and coordinates resource allocation on the shared PDSCH, thereby simplifying the overall coordination complexity while enabling efficient resource utilization
3Loss of energy
If dynamic coordination is implemented between MB and unicast communications, then resource efficiency improves, but device complexity increases due to additional switching and configuration management
Solution Approach 1:
The patent implements feedback mechanisms where the gNB continuously monitors network conditions, traffic patterns, and communication performance metrics. Based on this feedback, the coordination controller dynamically adjusts switching decisions and configuration parameters to optimize resource efficiency. This feedback-driven approach enables the system to adapt to changing conditions automatically, reducing resource waste while managing device complexity through intelligent automation rather than complex manual configurations
Solution Approach 2:
The patent utilizes parameter changes as a key mechanism for dynamic coordination. The gNB adjusts configurable parameters such as switching thresholds, time periods, and communication mode selections based on monitored conditions and feedback. By changing these parameters dynamically, the system achieves improved resource efficiency and reduced waste without requiring fundamental changes to device architecture, thereby managing complexity through parameter optimization rather than structural complexity
Data Source
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for a shared physical downlink shared channel (PDSCH). The UE may receive a first communication via the shared PDSCH and a first bearer based at least in part on the configuration, the first communication being one of a unicast communication or a multicast/broadcast communication. The UE may receive a second communication via the shared PDSCH and the first bearer or a second bearer based at least in part on the configuration, the second communication being the other of the unicast communication or the multicast/broadcast communication. Numerous other aspects are provided.