5G NR Handover Configuration Selection for Seamless Transitions
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Solution Overview
Problem
Conventional handover techniques for 5G NR networks are inadequate for seamless handovers between 5G NR base stations or between 5G NR and E-UTRA networks, as they often rely on insufficient or ambiguous delta configurations, which can lead to communication disruptions and inefficiencies.
Innovation Solution
The method involves determining whether to use a delta configuration or a full configuration for handover, with the source base station communicating with the user equipment and sending appropriate configuration information to the target base station, ensuring a smooth transition by either modifying or replacing the current configuration, thereby enhancing handover reliability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional handover techniques are used in 5G networks, then handover can be performed, but communication disruptions and inefficiencies occur due to insufficient or ambiguous delta configurations
Solution Approach 1:
The patent implements dynamic configuration selection by determining whether to use delta configuration or full configuration based on handover conditions. The system dynamically adapts the configuration approach rather than using a fixed method, allowing optimization between reliability and complexity for each specific handover scenario.
Solution Approach 2:
The patent changes the configuration parameter state by introducing a determination step that selects between two configuration modes (delta or full). This parameter change enables the system to adjust the configuration completeness based on handover requirements, resolving the contradiction between reliability and complexity.
2Productivity
If delta configuration is used for handover, then configuration transfer is simplified, but communication disruptions occur due to insufficient configuration information
Solution Approach 1:
The system dynamically selects between delta configuration and full configuration based on handover conditions. When delta configuration would cause disruptions, the system switches to full configuration, maintaining both efficiency and reliability through adaptive decision-making.
Solution Approach 2:
The patent incorporates a determination step that evaluates handover conditions and selects the appropriate configuration mode. This feedback mechanism ensures that configuration information sufficiency is assessed before handover execution, preventing communication disruptions while maintaining efficiency.
3Reliability
If full configuration is used for handover, then configuration completeness is ensured, but handover overhead and processing time increase
Solution Approach 1:
The system dynamically determines the appropriate configuration mode (delta or full) based on handover conditions. This dynamic approach ensures full configuration is used only when necessary for reliability, minimizing handover time in cases where delta configuration suffices.
Solution Approach 2:
The patent changes the configuration parameter from fixed to variable, allowing selection between delta and full configuration. This parameter change enables optimization of handover time by using the minimal necessary configuration information while ensuring reliability when full configuration is required.
4Adaptability or versatility
If conventional handover techniques are used between 5G NR and E-UTRA networks, then inter-network handover is possible, but handover failures occur due to inadequate configuration handling
Solution Approach 1:
The patent implements a universal determination mechanism that works across different network types (5G NR to 5G NR, 5G NR to E-UTRA, and vice versa). The configuration determination approach is multi-functional, handling various network combinations while ensuring reliable handover execution.
Solution Approach 2:
The system changes the configuration parameter selection based on network type compatibility requirements. For inter-network handovers between 5G NR and E-UTRA, the determination mechanism selects appropriate configuration modes to ensure compatibility and success, resolving the contradiction between versatility and reliability.
Data Source
AI summary
This document describes methods and devices for a handover of a user equipment from source base station (a Fifth Generation (5G) New Radio (NR) base station) to a target base station (another 5G NR base station or an Evolved Packet Core (EPC) network base station). The source base station, which is in communication with the user equipment, determines to handover the user equipment to the target base station. The source base station, then determines whether to use a delta configuration or a full configuration for handing over the user equipment. For the full configuration, the source base station either excludes the delta configuration from, or indicates use of the full configuration in, handover preparation information. By so doing, the source base station enables handover of the user equipment to the target base station.