Inter-Frequency Measurement Prioritization for Wireless Mobility
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Solution Overview
Problem
In wireless communication systems, existing methods for inter-frequency measurements are inefficient as they do not prioritize measurements relevant to mobility or supplemental capacity, leading to suboptimal performance in dynamic network environments.
Innovation Solution
The method involves identifying frequencies associated with mobility and supplemental capacity, prioritizing them, and selectively performing measurements based on these priorities to optimize inter-frequency measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If inter-frequency measurements are performed in a round-robin manner without prioritization, then all frequencies are measured equally, but the most relevant measurements (for mobility or supplemental capacity) are not performed first
Solution Approach 1:
The system performs preliminary identification and prioritization of frequencies based on mobility conditions or supplemental capacity needs before actually performing measurements. The access point identifies which frequencies are most relevant for the current access terminal state and schedules measurements accordingly, ensuring critical measurements are performed first rather than waiting for round-robin rotation.
Solution Approach 2:
The measurement schedule is made dynamic rather than static. Instead of fixed round-robin ordering, the system adapts the measurement sequence based on real-time conditions - prioritizing mobility-related frequencies when handover is needed or supplemental capacity frequencies when load balancing is required. This dynamic adjustment optimizes measurement relevance and timing.
2Reliability
If multiple frequencies are measured without prioritization, then comprehensive coverage is achieved, but measurement relevance and urgency are not differentiated
Solution Approach 1:
The system segments frequencies into different categories based on their relevance to current access terminal conditions - mobility frequencies (for handover decisions) and supplemental capacity frequencies (for load balancing). This segmentation allows differentiated measurement strategies for different frequency types, improving reliability by ensuring the right frequencies are measured for the right reasons without managing all frequencies uniformly.
Solution Approach 2:
Different measurement priorities and timing are applied locally to different frequencies based on their specific relevance to the access terminal's current state. Mobility frequencies receive higher priority when handover is needed, while supplemental capacity frequencies are prioritized when load balancing is required. This localized differentiation improves measurement relevance without requiring system-wide complexity.
3Loss of time
If all inter-frequency measurements are performed, then complete frequency information is obtained, but time and resources are not optimized for critical measurements
Solution Approach 1:
The access point performs preliminary assessment of measurement needs before executing measurements. By identifying whether mobility or supplemental capacity is the current priority, the system prepares and schedules critical measurements to be performed first, reducing the time delay for these important measurements while maintaining overall measurement throughput.
Solution Approach 2:
The system continuously monitors access terminal conditions and adjusts measurement priorities accordingly. When mobility conditions change or supplemental capacity needs arise, the feedback mechanism triggers reprioritization of measurements, ensuring critical measurements are performed promptly without permanently sacrificing overall measurement productivity.
Data Source
AI summary
Techniques for prioritizing inter-frequency measurements are disclosed. The method may include identifying a first frequency for measurement that is associated with mobility of an access terminal for transitioning from a serving primary cell to a target primary cell, identifying a second frequency for measurement that is associated with supplemental capacity of the access terminal for adding a secondary cell to operate in conjunction with the serving primary cell, prioritizing the mobility of the access terminal or the supplemental capacity of the access terminal, selecting for measurement in a measurement period either the first frequency or the second frequency based on the prioritizing, and triggering a measurement for the selected frequency.