DSS Carrier Misconfiguration Detection in Dual Connectivity
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Solution Overview
Problem
Dynamic spectrum sharing (DSS) deployments in 5G NR and LTE systems face issues such as interference, throughput degradation, and increased call drops due to concurrent configuration of the same DSS carrier as both an LTE secondary cell and a 5G NR primary secondary cell.
Innovation Solution
Implementing a misconfiguration detection and prevention mechanism that blocks or deconfigures the concurrent use of the DSS carrier as both an LTE carrier and a 5G NR PSCell, either from the network perspective by blacklisting certain band combinations or from the UE perspective by detecting and terminating the misconfigured cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the same DSS carrier is concurrently configured as both an LTE secondary cell and a 5G NR primary secondary cell, then spectrum utilization is improved, but interference problems and call drops increase
Solution Approach 1:
The patent applies preliminary anti-action by detecting the misconfiguration condition before it causes severe interference and call drops. The system proactively identifies when the same DSS carrier is incorrectly configured for both LTE SCell and NR PSCell operations, and terminates one of the configurations to prevent the harmful collision from occurring. This preventive approach maintains spectrum utilization flexibility while avoiding reliability degradation.
2Adaptability or versatility
If the same DSS carrier is concurrently configured as both an LTE secondary cell and a 5G NR primary secondary cell, then spectrum utilization is improved, but throughput degradation occurs
Solution Approach 1:
The patent implements feedback mechanisms where the system continuously monitors the configuration state of DSS carriers and detects when a misconfiguration occurs (same carrier assigned to both LTE SCell and NR PSCell). Upon detection, the system provides feedback by terminating one of the conflicting configurations, thereby eliminating the throughput degradation caused by interference while preserving the ability to utilize the spectrum efficiently through proper configuration management.
3Adaptability or versatility
If the same DSS carrier is concurrently configured as both an LTE secondary cell and a 5G NR primary secondary cell, then spectrum utilization is improved, but interference problems increase
Solution Approach 1:
The patent applies the taking out principle by extracting or removing one of the conflicting configurations when a misconfiguration is detected. When the system identifies that the same DSS carrier is assigned to both LTE SCell and NR PSCell, it extracts (terminates) one of these configurations to eliminate the source of interference. This resolves the harmful interaction while maintaining the other configuration, thus preserving spectrum utilization benefits without the interference penalty.
Data Source
AI summary
The disclosed technology is directed towards avoiding a misconfiguration that uses a Long Term Evolution (LTE) and new radio dynamic spectrum sharing (DSS) carrier as an LTE carrier and new radio primary secondary cell carrier concurrently for a dual connectivity mobile device. Network equipment can detect the misconfiguration and prevent its usage, or if already configured, deconfigure the LTE DSS secondary cell during setup of a dual connectivity mobile device. Alternatively a dual connectivity mobile device can detect the misconfiguration and notify the network to terminate one of the carriers. Information regarding the misconfiguration can be saved in the mobile device to proactively avoid the dual misconfiguration going forward. Such information can be communicated to other mobile devices, as well as the network.