Radio Resource Configuration Using Delay Metrics in 5G
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Solution Overview
Problem
The 5G communication system's performance is adversely affected due to the introduction of new functions like preprocessing and Service Data Adaptation Protocol (SDAP), which impact radio resource configuration, leading to delays in data packet delivery.
Innovation Solution
A method for radio resource configuration that involves acquiring arrival and delivery times of data packets across different protocol layers, calculating average delays or proportions of delayed packets, and adjusting resource allocation based on these calculations to optimize data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional radio resource configuration mode is adopted in 5G communication system, then system compatibility is maintained, but data packet delivery delay increases due to new functions like SDAP and preprocessing
Solution Approach 1:
The patent changes the measurement parameters from conventional signal strength-based metrics to delay-based metrics (average delay of downlink data packets, proportion of uplink data packets with reordering delay). This allows the system to adapt to new 5G functions while maintaining compatibility by using familiar measurement frameworks with new performance indicators that directly address the delay issue caused by SDAP and preprocessing functions
2Adaptability or versatility
If new functions like SDAP and preprocessing are introduced, then service functionality is enhanced, but radio resource configuration efficiency deteriorates
Solution Approach 1:
The patent implements feedback mechanisms where the base station measures delay performance metrics and uses this feedback to dynamically adjust radio resource configuration. The system continuously monitors average downlink delay and uplink reordering delay proportions, then adjusts scheduling decisions based on this feedback to optimize resource allocation efficiency while supporting new 5G service functions
Solution Approach 2:
The patent introduces dynamic radio resource configuration that adapts to changing delay conditions. Instead of static configuration, the system continuously adjusts resource allocation based on measured delay metrics, enabling flexible adaptation to the performance characteristics introduced by new 5G functions like SDAP and preprocessing
3Measurement precision
If detailed delay measurement across multiple protocol layers is implemented, then performance measurement precision is improved, but system complexity increases
Solution Approach 1:
The patent segments the delay measurement into specific protocol layer points (SDAP layer arrival time, PDCP layer arrival time, reordering window entry time, RLC layer arrival time, MAC layer arrival time). This segmentation allows precise measurement of delay at critical points in the protocol stack without requiring comprehensive monitoring of every processing step, thus achieving measurement precision while controlling system complexity
Data Source
AI summary
A radio resource configuration method, a base station and a UE are provided. The radio resource configuration method includes: acquiring an arrival time of each data packet; acquiring a delivery time or a reception time of each data packet; calculating an average delay of downlink data packets within a time period or a proportion of uplink data packets whose reordering delay at a PDCP layer within a time period is greater than or smaller than a predetermined delay threshold, the average delay of the downlink data packets including one or more of average delays of the downlink data packets for a same UE, of a same bearer type, through a same transmission path, on a same RB and in a same QoS flow within the time period; and performing radio resource configuration based on the calculated average delay or the calculated proportion.