Per DRB Excess Delay Threshold Configuration for 5G QoS
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Solution Overview
Problem
The current 5G NR architecture faces challenges in configuring excess delay measurements, as existing methods are not flexible enough to account for differences in data radio bearers (DRBs) mapped to various frequency physical channels, leading to suboptimal quality of service (QoS) measurements and network actions.
Innovation Solution
A method where a wireless device receives an excess delay measurement configuration from a serving RAN node, performing PDCP excess delay measurements based on threshold values specific to each DRB, and reporting these measurements back to the RAN node. This configuration allows for flexible threshold settings tailored to individual DRBs, enabling more accurate QoS assessments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single excess delay threshold configuration is used for all DRBs, then the configuration is simple and easy to manage, but the measurement accuracy and QoS assessment become suboptimal for different use cases
Solution Approach 1:
The patent segments the delay threshold configuration by introducing DRB-specific threshold parameters. Instead of a single unified threshold, the system now configures separate delayThreshold values for different Data Radio Bearers, allowing URLLC traffic to have stricter thresholds while MBB traffic has more relaxed thresholds, thereby improving measurement accuracy for each use case
Solution Approach 2:
The patent applies local quality by tailoring the delay threshold configuration to specific local requirements of each DRB. Each DRB can have its own optimized threshold value based on its QoS requirements, ensuring that the measurement criteria are locally optimized for the specific traffic type rather than using a one-size-fits-all approach
2Adaptability or versatility
If per-DRB threshold configuration is implemented, then measurement accuracy for different use cases improves, but the configuration complexity and signaling overhead increase
Solution Approach 1:
The patent introduces dynamic adaptability by enabling the RAN node to flexibly configure different delay thresholds for different DRBs based on real-time QoS requirements. The system can dynamically adjust which DRBs are monitored and what thresholds are applied, allowing the configuration to adapt to changing network conditions and service requirements
Solution Approach 2:
The patent changes the configuration parameters from a single unified delay threshold to multiple DRB-specific threshold parameters. This parameter change enables the system to differentiate between various traffic types (URLLC, MBB, etc.) and apply appropriate measurement criteria, significantly improving QoS measurement flexibility and adaptability
Data Source
AI summary
A method performed by a wireless device to receive an excess delay measurement configuration from a serving radio access network, RAN, node and perform measurements according to the excess delay configuration includes receiving an excess delay configuration to perform uplink PDCP excess delay measurements, the excess delay configuration including a list of PDCP excess delay thresholds associated with data radio bearer, DRB, identities, IDs. The method includes performing uplink PDCP excess delay measurements based on threshold values in the excess delay configuration. The method includes transmitting an excess delay measurement report to the serving RAN node, the excess delay measurement report including a list of PDCP excess delay measurements.