Common Convergence Sublayer for Dynamic QoS Mapping
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Solution Overview
Problem
Current LTE layer 2 protocol architecture lacks flexibility to dynamically set up and control radio bearers with unique quality of service characteristics, failing to adequately differentiate between diverse applications with varying quality of experience requirements.
Innovation Solution
Implementing a dynamic network architecture with a common convergence sublayer entity that maps and controls traffic through radio convergence sublayer entities, enabling flexible differentiated quality of service management and granular quality of experience provisioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If static one-to-one mapping is used between radio bearers and EPS bearers, then device complexity is reduced and ease of operation is improved, but adaptability and versatility deteriorate, preventing dynamic quality of service provisioning
Solution Approach 1:
The patent introduces a service flow mapping layer that enables a single radio bearer to serve multiple service flows with different QoS requirements. This multi-functional mapping mechanism allows the system to handle diverse applications (video streaming, instant messaging, etc.) through a unified protocol architecture, resolving the contradiction between adaptability and complexity by making the mapping layer universal rather than requiring separate dedicated paths for each service type
Solution Approach 2:
The patent implements dynamic service flow mapping that can be adjusted in real-time based on application requirements. The mapping between service flows and radio bearers is no longer static but can be dynamically configured through RRC signaling, allowing the system to adapt QoS parameters (priority, bandwidth, latency) according to the specific needs of different applications while maintaining a stable protocol structure
2Adaptability or versatility
If extensive RRC signaling and NAS signaling are used to establish dynamic mappings, then adaptability improves, but loss of time increases due to extensive signaling overhead
Solution Approach 1:
The patent pre-configures service flow templates with standard QoS parameters and mapping rules during network initialization. When a new service flow needs to be established, the system can quickly instantiate pre-defined templates rather than creating complete mappings from scratch, significantly reducing signaling time while maintaining adaptability for different application types
Solution Approach 2:
The patent enables rapid cloning of service flow configurations by copying existing successful mappings. When a new application similar to an existing one needs to be supported, the system can replicate the proven mapping configuration and adjust parameters as needed, avoiding time-consuming new configuration processes while maintaining adaptability
3Adaptability or versatility
If one-to-one mapping is maintained between PDCP entities and RLC entities, then reliability is improved through dedicated resource allocation, but adaptability deteriorates, preventing fine-granular quality of service control
Solution Approach 1:
The patent segments the service flow control into multiple granular levels, allowing different QoS parameters to be controlled independently for different service flows even when sharing the same radio bearer. This segmentation enables fine-grained QoS provisioning (different priorities, bandwidth allocations, latency requirements) while maintaining reliable dedicated resource allocation at the radio bearer level, resolving the contradiction between adaptability and reliability
Data Source
AI summary
Various communication systems may benefit from differentiated quality of service management. For example, specific applications run on a user equipment in a 5G radio access network may benefit from the flexible differentiated quality of service management. A method includes determining a service flow setup, and mapping traffic through the service flow by a common convergence sublayer entity to at least one radio convergence sublayer entity. The method also includes controlling the traffic through the service flow.