UE PSCell Change Reporting for Self-Optimizing 5G Networks
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Solution Overview
Problem
Existing wireless communication networks face challenges in managing successful primary secondary cell group (PSCell) addition or change reports, particularly in optimizing random access and minimizing manual drive tests, which are costly and inefficient.
Innovation Solution
The implementation of methods and systems for managing Successful PSCell Addition or Change Reports (SPR) through self-optimization techniques, including self-organizing networks (SON) and dual connectivity scenarios, where user equipment (UE) logs and reports relevant information to the network, discards stale data upon deregistration, and optimizes memory usage by releasing unnecessary configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual drive tests are used for network optimization, then testing accuracy can be ensured, but testing costs and time consumption increase significantly
Solution Approach 1:
The network system performs self-optimization by automatically collecting, analyzing, and processing PSCell addition/change report data without requiring manual drive tests. The system uses self-organizing network (SON) functions to autonomously optimize random access parameters based on collected measurement data from UEs, eliminating the need for expensive and time-consuming manual testing while maintaining optimization accuracy
Solution Approach 2:
The system implements a feedback mechanism where UEs continuously report PSCell addition/change success/failure information to the network. The network analyzes this feedback data and automatically adjusts random access parameters and PSCell configuration to improve network performance, creating a closed-loop optimization system that replaces manual testing with automated data-driven optimization
2Measurement precision
If UE stores detailed PSCell change reports continuously, then reporting accuracy is maintained, but memory consumption increases
Solution Approach 1:
The UE implements a memory management strategy where it stores PSCell change reports for a defined period or until a certain number of reports are collected, then discards older reports to free up memory. The system recovers storage space by selectively removing outdated data while retaining recent reports that are more relevant for current network optimization, balancing reporting accuracy with memory efficiency
Solution Approach 2:
Instead of storing all possible PSCell change data indefinitely, the system stores only the necessary portion of data required for effective network optimization. The UE selectively retains reports based on criteria such as recency, relevance to current network conditions, and optimization needs, discarding excessive data that would consume memory without providing proportional value
3Adaptability or versatility
If UE maintains all configuration parameters for PSCell operations, then operational flexibility is improved, but device complexity increases
Solution Approach 1:
The system extracts and releases unnecessary configuration parameters from the UE when they are no longer needed for active PSCell operations. When a PSCell change is completed or when configurations become stale, the system removes redundant parameters such as old random access configurations and timing advance values, reducing device complexity while maintaining the flexibility to reconfigure when needed
Solution Approach 2:
The configuration management system dynamically adjusts the set of maintained parameters based on current operational state. The UE actively maintains detailed configurations during PSCell addition/change operations but releases or simplifies configurations when operations are complete or when in idle states, making the system adaptable to different operational phases and reducing overall complexity
Data Source
AI summary
The disclosure relates to a fifth-generation (5G) or sixth-generation (6G) communication system for supporting a higher data transmission rate. A method performed by a user equipment (UE) in a wireless communication system, and the UE, are provided. The method includes storing first information on a successful primary secondary cell group (SCG) cell (PSCell) change or addition, transmitting, to a base station, a message including a report for the successful PSCell change or addition, performing a deregistration procedure from a network, and upon the deregistration procedure, discarding the first information on the successful PSCell change or addition.