Frequency Band Selection Using Signal Strength and MIMO Layers
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Solution Overview
Problem
Wireless access nodes do not efficiently serve wireless User Equipment (UE) over Primary Component Carriers (PCCs) and Secondary Component Carriers (SCCs, and they do not effectively select radio frequencies for PCCs.
Innovation Solution
The wireless access node processes received signal strengths, Multiple Input Multiple Output (MIMO) layers, electrical down-tilt angles, UE centrality angles, and available sector proportions to select the most suitable radio frequency band for PCCs, using processing circuitry and radio circuitry to optimize the selection based on these factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the wireless access node uses only the radio frequency band with the strongest signal for PCC selection, then the selection process is simple, but the serving efficiency over PCCs and SCCs is insufficient
Solution Approach 1:
The patent changes the selection parameters from only signal strength to a comprehensive set including signal strength, MIMO layers, electrical down-tilt angles, UE centrality angles, and available sector proportions. This multi-parameter approach resolves the contradiction by improving serving efficiency through more comprehensive evaluation while accepting increased selection process complexity as necessary for optimal performance.
2Measurement precision
If the wireless access node considers multiple factors (signal strength, MIMO layers, down-tilt angles, centrality angles, sector proportions) for frequency band selection, then the selection accuracy is improved, but the processing complexity increases
Solution Approach 1:
The patent performs preliminary measurements and calculations of all selection criteria (signal strength, MIMO layers, down-tilt angles, centrality angles, sector proportions) before making the final frequency band selection. This allows the system to gather all necessary data in advance, improving selection accuracy while organizing the processing complexity into manageable preliminary steps that can be executed systematically.
3Productivity
If the wireless access node optimizes PCC selection using comprehensive criteria, then the communication efficiency is enhanced, but the time required for selection increases
Solution Approach 1:
The system performs preliminary gathering and evaluation of all selection criteria including signal strength, MIMO layers, electrical down-tilt angles, UE centrality angles, and available sector proportions before final PCC selection. This preliminary action approach allows comprehensive evaluation to be completed in advance, reducing the time required at the moment of selection while maintaining high communication efficiency through optimized criteria.
Data Source
AI summary
A wireless access node serves wireless User Equipment (UE) over radio frequency bands. In the wireless access node, radio circuitry wirelessly receives signaling from the wireless UE that indicates received signal strengths and Multiple Input Multiple Output (MIMO) layers for the radio frequency bands. Processing circuitry in the wireless access node selects one of the radio frequency bands based on the received signal strengths and the MIMO layers. The radio circuitry wirelessly exchanges user data with the wireless UE over the selected one of the frequency bands. In some examples, the processing circuitry also uses sector locations of the wireless UE for the frequency bands to select the one of the frequency bands.