NR Network Handover With Slice Remapping and Fallback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The introduction of network slicing in New Radio (NR) systems affects cell handover processes, leading to potential disruptions and inefficiencies.
Innovation Solution
A handover method and device that considers slice information, including slice requested to be handed over and slice supported by the target network element, to determine whether to perform handover, slice remapping, or slice fallback, thereby mitigating the impact of network slicing on cell handover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network slicing is introduced in NR system, then service customization and flexibility are improved, but cell handover process is disrupted and efficiency deteriorates
Solution Approach 1:
The patent segments the handover decision process into multiple evaluation dimensions: slice compatibility assessment, slice remapping evaluation, and slice fallback determination. This segmentation allows the system to handle network slicing complexities without compromising overall handover efficiency, as each aspect is processed independently based on specific criteria
Solution Approach 2:
The patent performs preliminary evaluation of slice information before executing handover. The source base station assesses slice compatibility and determines remapping or fallback strategies in advance, which prevents handover disruptions and ensures seamless service continuity, thereby maintaining high handover efficiency while supporting network slicing
2Reliability
If slice information is considered in handover process, then service continuity is improved, but decision complexity increases
Solution Approach 1:
The patent applies local quality by evaluating slice information selectively based on specific conditions and requirements. Different aspects of slice information (slice ID, S-NSSAI, slice compatibility) are considered only when relevant to the handover scenario, which maintains service continuity without requiring comprehensive analysis of all slice parameters, thus controlling decision complexity
Solution Approach 2:
The patent introduces slice information as an intermediary element that mediates between handover decisions and service requirements. By using slice compatibility assessment as an intermediate evaluation step, the system ensures service continuity while simplifying the overall decision process, as the intermediary translates complex service requirements into actionable handover criteria
Data Source
AI summary
The embodiments of the present disclosure provide a handover method and device, capable of taking information on a slice requested to be handed over and/or information on a slice supported by a target network element into account in a handover process, thereby avoiding impact of introduction of network slicing on cell handover. The handover method includes: determining, by a first device, a handover behavior based on target slice information. The target slice information includes information on a slice requested to be handed over and/or information on a slice supported by a target network element. The handover behavior includes: whether to perform handover and/or whether to perform slice remapping or slice fallback during a handover process.