Beamforming Power Masking for Interference Control
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Solution Overview
Problem
Current beamforming techniques in wireless communication networks face challenges in efficiently managing power distribution to minimize interference while ensuring sufficient signal strength, particularly in scenarios with increasing user equipment density and complex angular power profiles.
Innovation Solution
The method involves determining a maximum power level mask for transmission beams in critical angular intervals and using a restricted codebook to control beamforming, ensuring that power is adapted to meet operational conditions and limit interference by constraining emission patterns around the horizon.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming is used to improve communication quality and save power, then signal strength for served users is improved, but interference to other users increases
Solution Approach 1:
The patent applies local quality by implementing angle-specific power masks that constrain transmission power in particular angular intervals where interference occurs. Different power levels are assigned to different angular regions, allowing the system to maintain high signal strength toward served users while limiting power emission in directions where other users are located, thus resolving the contradiction between communication quality and interference generation
Solution Approach 2:
The patent changes the power parameter dynamically based on angular position by determining maximum power masks for different angular intervals. The system adjusts transmission power levels according to the spatial distribution of users, increasing power toward served users and decreasing power in directions of potential interference, thereby simultaneously improving communication quality and reducing harmful interference
2Reliability
If power is increased to ensure sufficient signal strength, then communication reliability is improved, but energy consumption increases
Solution Approach 1:
The patent applies local quality by directing increased power only toward specific angular intervals where served users are located, rather than uniformly increasing power in all directions. The angle-specific power masks ensure that high signal strength is achieved only where needed, while other angular regions receive reduced or no additional power, thus improving communication reliability without proportionally increasing overall energy consumption
Solution Approach 2:
The patent applies partial action by implementing power masks that constrain power in only those angular intervals where interference occurs or where users are not served. Rather than uniformly limiting or increasing power across all directions, the system selectively applies power constraints only where necessary, achieving sufficient signal strength for served users while avoiding excessive energy consumption in directions where additional power would not provide benefit
3Object-generated harmful factors
If beamforming constraints are added to limit interference, then harmful factors are reduced, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the angular space into discrete intervals and assigning separate power mask constraints to each interval. This segmentation allows the complex beamforming problem to be broken down into manageable angular segments, where independent power constraints can be applied and evaluated, reducing the overall computational complexity compared to optimizing the entire angular space simultaneously while still effectively limiting interference
Data Source
AI summary
There is disclosed a method of operating a transmitter arrangement for a wireless communication network, the transmitter arrangement adapted for beamforming. The method comprises determining a maximum power level mask for the power of transmission and/or beams in a critical angular interval, the maximum power level mask covering at least the critical angular interval and controlling beamforming based on the maximum power level mask.