Fine-Grained DRB Mapping for XR Multi-Flow QoS Scheduling
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Solution Overview
Problem
Current QoS frameworks for extended reality (XR) services, which include multiple types of data with varying importance and requirements, are inadequate as they map only one QoS flow to one DRB, leading to inconsistent scheduling and suboptimal data transmission.
Innovation Solution
Implementing a communication method that maps different data flows to DRBs based on finer granularity rules using configuration parameter information, such as PDU sets and sub-QoS flows, allowing for differentiated handling of data types with varying priorities, importance, and delay requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If one QoS flow is mapped to only one DRB according to current protocol, then the mapping rule is simple and consistent, but it cannot meet the diverse transmission requirements of XR multi-flow service data
Solution Approach 1:
The patent segments the QoS flow into multiple sub-QoS flows, each of which can be independently mapped to different DRBs. This allows different segments (sub-QoS flows) to have different mapping rules based on their specific transmission requirements, thereby achieving adaptability without requiring complete redesign of the mapping mechanism.
Solution Approach 2:
The patent applies different mapping rules to different sub-QoS flows within the same QoS flow based on their local characteristics (priority, delay sensitivity, importance). Each sub-QoS flow receives customized mapping treatment rather than uniform treatment, enabling the system to meet diverse transmission requirements while maintaining manageable complexity through localized differentiation.
2Reliability
If different data flows with varying priorities and importance are transmitted using the same scheduling rule, then the scheduling mechanism is simple, but the transmission quality for critical data is suboptimal
Solution Approach 1:
The patent implements different scheduling rules for different sub-QoS flows based on their priority and importance characteristics. Critical data flows receive higher priority scheduling treatment while less critical flows use standard scheduling, thereby improving overall transmission quality without requiring completely complex scheduling mechanisms for all data types.
Solution Approach 2:
The scheduling mechanism becomes dynamic by adapting the scheduling rule selection based on the characteristics of each sub-QoS flow. The system can dynamically choose appropriate scheduling strategies (e.g., priority-based, delay-sensitive, or standard scheduling) according to the specific requirements of each data flow, improving reliability without static complexity.
3Productivity
If XR service data is transmitted without fine-grained mapping rules, then the system operation is simple, but the service quality and user experience deteriorate
Solution Approach 1:
The patent segments XR service data into multiple PDU sets with different characteristics (priority, delay, importance). Each PDU set can be independently configured with appropriate mapping rules, enabling fine-grained control over service quality without requiring complete reconfiguration of the entire transmission system.
Solution Approach 2:
The patent introduces configurable parameters (priority, delay, importance) that can be adjusted to optimize service quality for different types of XR data. By changing these parameters rather than restructuring the entire system, the patent achieves improved service quality with manageable configuration complexity.
Data Source
AI summary
A communication method and a communication apparatus are disclosed, and are applied to the communication field. The method includes: A terminal device receives first configuration parameter information, where the first configuration parameter information is used for determining a first rule, the first rule is a rule for mapping a first data flow to a data radio bearer DRB, and the first data flow is a protocol data unit PDU set, a PDU, a sub quality of service QoS flow, a data flow at a finer granularity than a QoS flow, a data flow included in a Qos flow, a data flow mapped to a QoS flow, or a data flow mapped to a sub QoS flow. The terminal device maps to-be-transmitted data to the DRB according to the first rule.