Multicast Bearer Relationship Management for Mobile Terminals
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Solution Overview
Problem
The 3GPP MBMS architecture lacks scalable and adaptive quality of service (QoS) models, leading to inefficient resource utilization and increased signaling overhead in mobile communication networks, as it cannot differentiate QoS between branches of a multicast or broadcast service distribution tree, resulting in all terminals being subjected to the lowest common denominator quality and requiring multiple separate services for alternative or complementary streams.
Innovation Solution
The provision of service description information to mobile terminals that indicates individual bearers and predetermined bearer combinations, allowing terminals to determine if received notifications correspond to allowed combinations, and enabling network entities to select appropriate bearer combinations based on quality-of-service constraints, thereby optimizing resource allocation and service delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the 3GPP MBMS architecture provides multicast or broadcast service to all terminals using a unified QoS model, then service delivery is simplified, but resource utilization becomes inefficient and signaling overhead increases
Solution Approach 1:
The patent segments the unified QoS model into multiple differentiated QoS models corresponding to different service types (e.g., eMBB, uRLLC, mMTC). Each service type has its own QoS parameters and bearing characteristics, allowing the network to selectively apply appropriate QoS models to different terminals or service groups, thereby improving resource utilization while maintaining manageable service delivery complexity through structured classification
Solution Approach 2:
The patent enables local QoS differentiation by allowing different terminals or terminal groups to receive customized QoS configurations based on their specific service requirements. The network can assign different QoS parameters (such as priority, bit rate, latency) to different bearers serving different terminals, optimizing resource allocation locally for each service instance rather than applying a one-size-fits-all approach
2Reliability
If the network provides multiple separate services for alternative or complementary streams, then service quality is improved, but signaling overhead and network complexity increase
Solution Approach 1:
The patent merges multiple separate service configurations into a unified service delivery mechanism by introducing a service association relationship between different bearers. Terminals can subscribe to a single service that automatically manages multiple bearers (primary and alternative), reducing signaling overhead while maintaining service quality through automated bearer selection and switching based on network conditions and terminal capabilities
3Adaptability or versatility
If all terminals are subjected to the lowest common denominator quality, then service compatibility is improved, but resource wastage increases
Solution Approach 1:
The patent introduces dynamic QoS adaptation mechanisms that allow terminals to receive service quality matching their capabilities and network conditions. The system dynamically adjusts bearer selection, QoS parameters, and service delivery characteristics based on real-time feedback from terminals and network status, enabling high-quality service delivery to capable terminals while maintaining compatibility with less capable terminals, thereby eliminating resource wastage associated with uniform low-quality delivery
Data Source
AI summary
The invention relates to a method providing a multicast or broadcast service to (the user of) a mobile terminal via a radio access network of a mobile communication system. The multicast or broadcast service is associated to a plurality of bearers for providing the multicast or broadcast service: Further, the invention relates to a mobile terminal for providing a multicast or broadcast service to a user, and to a network entity for providing a multicast or broadcast service to a mobile terminal via a radio access network of a mobile communication system. To enable the correct reception of the broadcast or multicast service at the mobile terminal, the invention proposes to provide the mobile terminal with information on the individual (layered/alternative/complementary) bearers' relationships. The bearers' relationships are provided in service description information for the multicast or broadcast service which indicates the bearers associated to the multicast or broadcast service and predetermined bearer combinations among the plurality of bearers.