Handover Report Signaling for Type-Specific Mobility Tuning
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Solution Overview
Problem
Existing wireless communication systems struggle to distinguish between different types of handover failures (Too-late, Too-early, and Handover to Wrong Cell) and adjust mobility parameters accordingly, leading to inefficiencies in handover procedures.
Innovation Solution
Incorporating a handover information element (HO-I) to characterize the type of handover performed by user equipment, allowing network components to differentiate between handover types and adjust mobility parameters, using an ENUM data type to indicate handover types like BHO, CHO, DAPS, or CHO&DAPS, and transmitting this information during radio link failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If handover information element is transmitted to distinguish handover types, then handover procedure reliability is improved, but message overhead and processing complexity increase
Solution Approach 1:
The handover information is segmented into distinct handover type indicators (BHO, CHO, DAPS, CHO&DAPS) that can be independently identified and processed. This segmentation allows the receiving node to quickly determine the specific handover type without analyzing the entire message structure, thereby improving reliability while managing processing complexity through structured data organization.
Solution Approach 2:
The invention changes the parameter representation by introducing specific handover type indicators (ENUM data types) that encode different handover procedures. This parameter transformation enables the system to distinguish between handover types using standardized values rather than complex descriptive messages, improving reliability through precise identification while controlling message overhead.
2Measurement precision
If separate mobility failure counters are maintained for different handover types, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The failure counting mechanism is segmented into separate counters for each handover type (BHO failures, CHO failures, DAPS failures, CHO&DAPS failures). This segmentation enables precise measurement of failure rates for each handover procedure independently, improving measurement precision while organizing complexity through structured counter management that can be systematically maintained.
Solution Approach 2:
The counter management system is designed to handle multiple handover types through a unified framework. The same counter increment logic applies universally across different handover types, with the only variation being which counter is incremented based on the handover type indicator. This universal approach improves measurement precision across all handover types while reducing the complexity of maintaining separate specialized counters.
3Reliability
If mobility parameters are adjusted based on handover type, then handover reliability is improved, but control complexity increases
Solution Approach 1:
The system applies local quality by adjusting mobility parameters specifically tailored to each handover type. Different handover types (BHO, CHO, DAPS, CHO&DAPS) have different characteristic failure modes, and the parameter adjustment is localized to match each type's specific requirements. This targeted approach improves reliability for each handover procedure while managing complexity through type-specific parameter sets that can be independently optimized.
Solution Approach 2:
The invention implements parameter changes by modifying mobility parameters based on the detected handover type. When a specific handover type is identified through the handover information element, the system automatically adjusts relevant mobility parameters (such as handover thresholds, timing advances, or power compensation) to optimize performance for that specific handover procedure, thereby improving reliability while using automated parameter adjustment to control complexity.
Data Source
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AI summary
An apparatus, comprising at least one processor, and at least one memory storing instructions, the at least one memory and the instructions configured to, with the at least one processor, cause a first node to transmit a handover information, which characterizes a type of a handover performed by a user equipment from a source node to a target node, to at least one of: a) the source node, b) the target node, c) a further entity.