Base Station Antenna Selection Using Adaptive Weight Vectors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In next-generation communication base stations with closely disposed antennas, existing methods for selecting transmission antennas based on radio wave strength can be influenced by interference waves, leading to suboptimal antenna selection and unstable wireless communication.
Innovation Solution
A base station with multiple antennas and a control unit that performs adaptive array processing to calculate transmission weight vectors, selecting the transmission antenna based on these vectors to reduce interference and ensure stable communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If antenna selection is based on radio wave strength, then simple selection criteria is achieved, but interference wave influence increases
Solution Approach 1:
The patent changes the selection parameter from radio wave strength to transmission weight vector magnitude. The control unit calculates transmission weight vectors through adaptive array processing and selects the antenna with the largest weight vector magnitude, thereby changing the selection criterion to one that accounts for interference conditions while maintaining operational simplicity
Solution Approach 2:
The patent introduces transmission weight vectors as an intermediary element between the raw reception signals and the antenna selection decision. The adaptive array processing unit processes reception signals to generate weight vectors that inherently reflect interference conditions, serving as a mediator that translates complex interference environments into actionable selection criteria
2Reliability
If multiple antennas are used for transmission, then communication reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent segments the transmission function across multiple antennas but uses adaptive array processing to effectively isolate and nullify interference from specific directions. By dividing the reception processing into independent adaptive array channels and combining them through weight vectors, the system achieves reliable communication while managing the complexity of multiple antennas
Solution Approach 2:
The patent makes the reception circuits multi-functional by using them for both interference cancellation through adaptive array processing and for determining transmission antenna selection. The same reception circuits that cancel interference also provide the weight vectors used for selection, eliminating the need for separate selection measurement circuits and reducing manufacturing cost
Data Source
AI summary
A base station according to this disclosure includes a plurality of antennas used for transmission and reception, an adaptive array processing unit that performs adaptive array processing on reception signals received by the plurality of antennas, and a control unit that decides a transmission antenna used for the transmission from the plurality of antennas at a time when a transmission signal is transmitted, and the control unit decides the transmission antenna based on transmission weight vectors respectively corresponding to the plurality of antennas obtained from a processing result of the adaptive array processing unit.