Dual Radio Channel Configuration for Unicast and Multicast Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing LTE technologies do not support simultaneous transmission of unicast and multicast/broadcast services to user equipment (UE), and the transmission mode of multicast/broadcast services is fixed.
Innovation Solution
Configuring multiple radio channels, including a first and a second radio channel for a PDU session, where the first channel can be unicast, broadcast, or multicast, and the second channel is the other type, allowing for flexible data transmission modes and sharing or independent bearers, with specific configurations and activations via RRC messages and synchronization functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed transmission mode is used for multicast/broadcast services, then the system complexity is reduced, but the adaptability to different service requirements deteriorates
Solution Approach 1:
The patent implements dynamic transmission mode selection by allowing the network to configure multiple radio channels (unicast, multicast, broadcast) and dynamically switch between them based on service requirements. The gNB can select different transmission modes for different PDU sessions or QoS flows, enabling adaptive optimization of service delivery while maintaining manageable system complexity through standardized configuration procedures.
2Adaptability or versatility
If only one MBMS service is supported at a time, then the receiver complexity is reduced, but the service coverage and user satisfaction deteriorate
Solution Approach 1:
The patent segments the service delivery by establishing separate PDU sessions or QoS flows for different services, each with its own radio channel configuration. This allows the UE to simultaneously receive multiple services through distinct protocol stacks and channel configurations, increasing service coverage while keeping the reception mechanism manageable through structured segmentation of processing paths.
3Productivity
If unicast and multicast/broadcast services are transmitted simultaneously, then the service diversity and user experience are improved, but the interference management and resource allocation complexity increase
Solution Approach 1:
The patent introduces the gNB as an intelligent intermediary that manages resource allocation and interference coordination between unicast and multicast/broadcast services. The gNB performs channel quality assessment, selects appropriate transmission modes, and configures radio resources to minimize interference while maximizing overall transmission efficiency, thereby managing complexity centrally rather than distributing it across multiple nodes.
Data Source
AI summary
The present disclosure relates to a data transmission method, a UE and a network node. The method performed by a network node includes: configuring a first and/or second radio channel for a first PDU session, or configuring a first and/or second radio channel for at least one same QoS flow of a first PDU session. The first radio channel is configured to transmit first data to a UE; the second radio channel is configured to transmit second data to the UE; the first and second radio channels are one of a unicast radio channel, a broadcast or multicast radio channel; the first data represents first data of the first PDU session or first data of at least one QoS flow of the first PDU session; the second data represents second data of the first PDU session or second data of at least one Qos flow of the first PDU session.