Adjacent Carrier Measurement for Power Backoff Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing interference between adjacent carrier frequencies, particularly in scenarios involving multiple operators, which can lead to inefficient power usage and signal quality degradation.
Innovation Solution
The implementation of power amplifier backoff control mechanisms that involve measuring signals at adjacent carrier frequencies and adjusting power transmission based on measurement reports, allowing for optimized power management and reduced interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power transmission is increased to improve signal quality, then signal quality is improved, but interference with adjacent carrier frequencies increases
Solution Approach 1:
The patent implements a feedback mechanism where the UE measures adjacent carrier frequencies and reports measurements to the network node. The network node uses this feedback to dynamically adjust the power amplifier backoff value, creating a closed-loop control system that balances signal quality and interference reduction
Solution Approach 2:
The patent changes the power transmission parameter dynamically by adjusting the power amplifier backoff value based on measured interference conditions. When adjacent carrier interference is detected, the backoff value is increased to reduce power transmission and minimize interference, while allowing higher power when interference is low
2Object-generated harmful factors
If power amplifier backoff is increased to reduce interference, then interference is reduced, but power efficiency deteriorates
Solution Approach 1:
The patent makes the power amplifier backoff value dynamic rather than static. The backoff value is continuously adjusted based on real-time measurements of adjacent carrier frequencies, allowing the system to optimize power efficiency by applying backoff only when and where interference occurs, rather than applying constant backoff
3Object-generated harmful factors
If measurements of adjacent carrier frequencies are continuously performed to reduce interference, then interference management is improved, but device complexity increases
Solution Approach 1:
The patent implements partial measurement action by having the UE measure only specific adjacent carrier frequencies that are relevant to the current transmission, rather than continuously measuring all possible frequencies. The measurement configuration is optimized to perform only necessary measurements, reducing complexity while maintaining effective interference management
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive one or more signals at one or more carrier frequencies adjacent to an assigned operating carrier frequency, the assigned operating carrier frequency being associated with a first operator, the one or more carrier frequencies adjacent to the assigned operating carrier frequency being associated with one or more second operators. The UE may transmit a measurement report regarding the one or more signals at the one or more carrier frequencies adjacent to the assigned operating carrier frequency. The UE may receive one or more communications transmitted with a power amplifier backoff value based at least in part on the measurement report. Numerous other aspects are described.