Adaptive Handover Threshold for Multi-Band Throughput
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Solution Overview
Problem
Existing handover mechanisms in multi-band communication systems do not differentiate between different frequency bands, leading to inadequate recognition of coverage nature under varying radio conditions, which affects overall throughput.
Innovation Solution
Adaptive handover threshold adjustment with a feedback loop to prioritize frequency bands based on current communication conditions, specifically by modifying the handover offset in shared coverage areas between high and low frequency bands, such as UMTS 900 MHz and UMTS 2.1 GHz, to optimize resource allocation and throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing handover mechanisms are used without frequency band differentiation, then the mechanism is simple and easy to implement, but the coverage nature of individual frequency bands cannot be recognized under different radio conditions
Solution Approach 1:
The patent applies local quality by introducing frequency-band-specific handover thresholds and offsets. Different frequency bands (e.g., high band vs. low band) are treated with different threshold values that reflect their specific coverage characteristics. This allows the system to recognize and adapt to the coverage nature of individual frequency bands while maintaining a unified handover framework.
Solution Approach 2:
The patent implements dynamics by making the handover threshold adaptive rather than static. The threshold is dynamically adjusted based on current radio conditions, user location, and frequency band characteristics. This enables the system to respond to changing conditions and optimize handover decisions in real-time.
2Adaptability or versatility
If frequency bands are treated as different carriers with separate handover mechanisms, then coverage nature can be recognized, but the system complexity increases significantly
Solution Approach 1:
The patent merges the handover mechanisms for different frequency bands into a unified framework. Instead of implementing completely separate handover procedures for each band, the system uses a common handover logic with frequency-specific parameters (thresholds and offsets). This combining approach enables frequency band prioritization while avoiding the complexity of fully separate mechanisms.
Solution Approach 2:
The patent changes parameters (handover threshold values and offsets) based on frequency band characteristics rather than changing the fundamental handover mechanism. By adjusting threshold parameters adaptively according to the active frequency band and radio conditions, the system achieves frequency band prioritization without implementing entirely different handover procedures for each band.
3Adaptability or versatility
If handover threshold is fixed, then the mechanism is simple and stable, but it cannot adapt to current communication conditions and cell throughput variations
Solution Approach 1:
The patent implements feedback by continuously monitoring cell throughput and radio conditions, then using this information to adjust the handover threshold. The system measures actual communication performance and feeds this information back to modify the threshold parameters, creating a closed-loop control mechanism that adapts to changing conditions.
Solution Approach 2:
The patent makes the handover threshold dynamic by adjusting it in real-time based on current cell throughput and radio conditions. Rather than using a fixed threshold, the system dynamically modifies the threshold value to match actual network conditions, enabling optimal handover decisions that adapt to varying traffic patterns and signal quality.
Data Source
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AI summary
Multi-band handover via an adaptive handover threshold The invention relates to a method for adapting a handover threshold for handover between a first frequency band and a second frequency band in a multi-band communication arrangement to communication conditions in a communication cell. The method comprises determining (101) a cell throughput of the communication cell, and amending (103) a handover offset of the handover threshold in dependency on the cell throughput.