Signal Booster Channelization for Interference Attenuation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Signal boosters face challenges in maximizing uplink signal gain while minimizing noise power, particularly when strong signals from nearby base stations interfere with weak signals from distant base stations, leading to reduced communication quality and compliance issues with regulatory noise and gain limits.
Innovation Solution
The implementation of a signal booster that channelizes downlink signals to attenuate interfering signals from nearby base stations, allowing for increased uplink signal gain and reduced noise power, thereby enhancing communication range and compliance with regulatory standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the signal booster amplifies all downlink signals uniformly, then the uplink signal gain is maximized, but strong signals from nearby base stations interfere with weak signals from distant base stations, increasing noise power and reducing communication quality
Solution Approach 1:
The patent segments the downlink signal into multiple channels corresponding to different base stations. The channelization device separates signals from different base stations into distinct channels, allowing selective attenuation of strong interfering signals while preserving weak desired signals. This segmentation resolves the contradiction by enabling differential processing of signals that would otherwise be uniformly amplified.
Solution Approach 2:
The patent applies different processing characteristics to different signal channels. Each channel can have its own attenuation level applied based on the strength and origin of the signal. This local quality approach allows the system to attenuate strong interfering signals from nearby base stations while maintaining or even amplifying weak signals from distant base stations, thereby improving overall communication quality without uniform amplification.
2Length of moving object
If the signal booster increases uplink signal gain, then communication range is extended, but noise power from strong interfering signals increases, leading to compliance issues with regulatory noise and gain limits
Solution Approach 1:
The patent extracts and removes the harmful strong interfering signals from the downlink signal before amplification. The channelization device identifies and separates strong signals from nearby base stations, applying selective attenuation to remove these harmful components. This extraction allows the system to increase overall uplink gain to extend communication range while preventing the amplification of noise power from interfering signals, ensuring regulatory compliance.
3Reliability
If the signal booster uses broadband amplification, then all frequency bands are enhanced, but interfering signals across the spectrum are also amplified, reducing signal-to-noise ratio and communication reliability
Solution Approach 1:
The patent segments the broadband signal into multiple frequency channels, each corresponding to a specific base station. This channelization allows the system to process different frequency bands differently, attenuating only those channels with strong interfering signals while preserving channels with weak desired signals. This selective channel-based processing maintains signal-to-noise ratio without requiring narrowband filtering that would limit overall bandwidth utilization.
Data Source
AI summary
A technology is described for increasing signal booster gain from a weak-signal far node in the proximity of a strong-signal near node. A first splitter can be coupled to a first interface port. A first channelized switchable first-direction parallel path can be coupled to the first splitter comprising a first channelized first-direction bandpass filter for a first subset of a selected first-direction band. A first switchable first-direction parallel path coupled to the first splitter can comprise: a switchable first-direction path comprising a first bandpass filter for passing the selected first-direction band; and a second channelized switchable first-direction parallel path comprising a second channelized first-direction bandpass filter for a second subset of the selected first-direction band.