PDU Error Probability Feedback for Real-Time URLLC Optimization
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Solution Overview
Problem
Current wireless communication systems, particularly in URLLC, face challenges in optimizing network performance due to stringent reliability and low latency requirements, where existing feedback mechanisms are inadequate for real-time measurement and optimization, leading to prolonged optimization times and potential compromise of critical applications.
Innovation Solution
A new feedback mechanism is introduced to estimate protocol data unit (PDU) error probability at various radio layers, enabling more precise and timely feedback through PDU-EP calculation and reporting, which includes configuring user equipment (UE) for error probability calculation and reporting, and utilizing mutual information-based link estimation to compute block error probability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing feedback mechanisms are used for block error rate measurement, then network performance optimization is achieved, but the optimization time is prolonged and real-time requirements for URLLC are not met
Solution Approach 1:
The patent implements a feedback mechanism where the UE calculates PDU error probability based on block error rate measurements and transmits this calculated value to the network node. This feedback loop enables the network to quickly obtain error probability information without waiting for extensive statistical collection periods, thus accelerating optimization while meeting real-time URLLC requirements
Solution Approach 2:
The UE performs preliminary calculation of PDU error probability using block error rate measurements before transmitting to the network. This preliminary action at the UE side prepares the error probability data in advance, reducing the time the network needs to wait for comprehensive error statistics and enabling faster optimization decisions
2Measurement precision
If detailed error statistics are collected for accurate PDU error probability calculation, then measurement precision is improved, but the time required for data collection increases
Solution Approach 1:
The patent introduces PDU error probability as an intermediary metric that the UE calculates from block error rate measurements. This intermediary value provides accurate error probability information without requiring the network to directly collect and process extensive raw error statistics, thus achieving measurement precision while reducing data collection time
Solution Approach 2:
The UE autonomously performs the calculation of PDU error probability based on its own block error rate measurements and transmits the result to the network. This self-service approach at the UE side eliminates the need for the network to directly collect and process detailed error statistics, achieving accurate measurement while minimizing data collection time
Data Source
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AI summary
Systems, methods, apparatuses, and computer program products for error probability feedback are provided. One method may include transmitting, to at least one user equipment, a configuration for protocol data unit error probability calculation and reporting. The method may also include receiving, from the at least one user equipment, feedback related to the protocol data unit error probability.