Signal Amplifier Gain Control for Stable Cell Coverage
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Solution Overview
Problem
The introduction of a signal amplifier in a network side device affects the coverage range of a cell due to changes in channel state, particularly when the link from the base station to the signal amplifier is blocked.
Innovation Solution
A gain control method and apparatus for a signal amplifier that adjusts power parameters such as amplification multiple and transmit power based on target information, including indications from an upstream network side device or self-obtained information, to maintain consistent cell coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a signal amplifier is introduced to extend cell coverage range, then signal strength reaching UE increases, but coverage range is reduced when channel state changes (e.g., link blocked)
Solution Approach 1:
The patent implements dynamic gain control by enabling the signal amplifier to adjust its amplification multiple in real-time based on channel state feedback. The amplifier transitions from a static fixed-gain configuration to a dynamic variable-gain system that adapts to changing channel conditions, thereby maintaining consistent coverage range despite channel variations.
Solution Approach 2:
The patent establishes a feedback mechanism where channel state information is obtained and used to control the amplification multiple of the signal amplifier. This closed-loop control system continuously monitors channel conditions and adjusts the amplifier gain accordingly, preventing coverage degradation when channel state changes occur.
2Power
If amplification multiple is increased to improve signal strength, then signal power increases, but interference increases and coverage range may be affected by channel state
Solution Approach 1:
The patent employs dynamic adjustment of amplification multiple based on real-time channel state assessment. Rather than using a fixed high amplification that causes excessive interference, the system adaptively sets the gain level appropriate for current channel conditions, thereby improving signal power only when necessary while minimizing interference generation.
Solution Approach 2:
The patent changes the amplification multiple parameter dynamically according to channel state conditions. By adjusting this key parameter based on feedback information, the system optimizes signal power output to match actual propagation conditions, avoiding both insufficient signal strength and excessive interference.
Data Source
AI summary
A gain control method for a signal amplifier includes obtaining, by the signal amplifier, target information; determining, by the signal amplifier, a power adjustment parameter of the signal amplifier according to the target information, where the power adjustment parameter includes any one of the following: an amplification multiple-related parameter and a transmit power-related parameter; and adjusting, by the signal amplifier, a power parameter of the signal amplifier according to the power adjustment parameter, where the power parameter includes any one of the following: an amplification multiple and transmit power.