Cellular Signal Booster Band Detection
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Solution Overview
Problem
Traditional signal boosters face challenges in independently controlling uplink gains or noise powers for multiple bands based on control information from downlink signals, leading to potential network overload and inefficient signal amplification.
Innovation Solution
The implementation of a signal booster with a controller that adjusts uplink gain or noise power for each band independently by detecting control information from separate downlink signal paths, allowing for band-specific detection and automatic gain control to prevent network overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional signal boosters use a single combined downlink signal path for multiple bands, then device complexity is reduced, but measurement precision of control information for each band deteriorates
Solution Approach 1:
The patent segments the downlink signal path by inserting bandpass filters that separate different frequency bands before detection. This allows the detector to measure control information for each band independently, improving measurement precision while maintaining a relatively simple overall device structure through modular filter insertion.
Solution Approach 2:
The patent implements dynamic band separation where bandpass filters are selectively inserted into the signal path based on which bands are currently active. This dynamic configuration allows the system to adapt the signal path structure to match operational requirements, achieving precise per-band measurement without permanently increasing device complexity.
2Ease of operation
If traditional signal boosters amplify all bands uniformly, then ease of operation is improved, but reliability of network protection deteriorates due to potential network overload
Solution Approach 1:
The patent applies local quality by enabling independent gain control for each frequency band. The system measures downlink signal strength separately for each band and adjusts uplink gain specifically for that band, allowing localized optimization rather than uniform control. This improves network protection reliability by preventing overload in specific bands while maintaining simple operation through automated per-band adjustment.
Solution Approach 2:
The patent implements feedback control where the detector continuously monitors downlink signal strength for each band and feeds this information back to the amplifier to adjust uplink gain accordingly. This closed-loop feedback mechanism automatically adapts gain settings to current signal conditions, improving both reliability of network protection and ease of operation without requiring manual intervention.
3Measurement precision
If traditional signal boosters use independent detection for each band, then measurement precision of control information improves, but device complexity increases due to separate signal paths
Solution Approach 1:
The patent uses segmentation by inserting bandpass filters at specific points in the signal path to separate frequency bands only during the detection phase. The filters divide the combined signal into band-specific components for measurement, while the main signal path remains unified. This achieves independent per-band detection accuracy without duplicating entire signal paths, thereby limiting the increase in device complexity.
4Ease of operation
If traditional signal boosters apply uniform gain control, then ease of operation is improved, but productivity of signal amplification deteriorates due to inefficient noise power management
Solution Approach 1:
The patent changes the gain parameter independently for each frequency band based on measured downlink signal strength. Instead of applying a single uniform gain setting, the system adjusts gain values specifically for bands with weaker signals, improving signal amplification efficiency and noise power management. The automated parameter adjustment maintains ease of operation while significantly improving productivity through optimized per-band gain control.
Data Source
AI summary
Technology for a cellular signal booster operable to amplify cellular signals is disclosed. The cellular signal booster can include a downlink cellular signal path configured to amplify and filter a received downlink cellular signal in a plurality of selected bands. The downlink signal path can combine at least a first band and a second band in the plurality of selected bands. The cellular signal booster can include a controller operable to perform network protection by adjusting an uplink gain or noise power for at least one of a first band or a second band in an uplink signal path. The uplink gain or noise power can be adjusted for the first band in the uplink signal path or the second band in the uplink signal path using a signal strength associated with the received downlink cellular signal on the downlink cellular signal path.