1-Bit Antenna Controller Beamforming for Wireless Signal Transmission
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transmitting signals between terminals and base stations, particularly in achieving effective beam direction and radiation patterns using conventional antenna controllers.
Innovation Solution
A method and apparatus for transmitting signals using a 1-bit antenna controller in user equipment (UE), which maps data to symbols with specific phase values, determines beam directions for the data, and generates beams for data transmission based on antenna element indication values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional antenna controllers are used for beamforming, then the system can transmit signals, but the complexity of the antenna controller increases and the efficiency of beam direction determination decreases
Solution Approach 1:
The patent segments the phase control into discrete 1-bit quantization levels for each antenna element. Instead of using continuous or high-resolution phase control, the system divides the phase space into two distinct states (0 and π), enabling simplified controller logic while maintaining effective beamforming capability through coordinated activation of antenna elements.
Solution Approach 2:
The patent changes the control parameter from continuous phase values to discrete 1-bit quantized values. This parameter transformation simplifies the antenna controller by reducing the resolution requirement from multiple bits per antenna element to just 1 bit, thereby reducing overall controller complexity while preserving the essential beam direction control functionality.
2Device complexity
If 1-bit antenna controller is used, then the device complexity is reduced, but the precision of phase control decreases
Solution Approach 1:
The patent compensates for the loss of phase control precision by segmenting the antenna array into independently controllable groups. Each antenna element is controlled with 1-bit precision, but the collective arrangement and phase relationship of multiple elements maintain the overall beamforming accuracy through their coordinated operation.
Solution Approach 2:
The patent merges the phase control function with the antenna element activation function. Instead of separately controlling phase and amplitude, the 1-bit controller simultaneously determines both the phase state (0 or π) and the activation state of each antenna element, combining multiple control functions into a single simplified control mechanism.
3Productivity
If beamforming is implemented with multiple antenna elements, then the data transmission efficiency is improved, but the complexity of determining signal radiation patterns increases
Solution Approach 1:
The patent segments the complex radiation pattern determination into simple per-element phase decisions. Instead of calculating overall array radiation patterns, the system independently determines the phase state (0 or π) for each antenna element based on the desired beam direction, simplifying the determination process while achieving the required radiation pattern through element coordination.
Solution Approach 2:
The patent changes the radiation pattern control approach from continuous parameter adjustment to discrete binary selection. Each antenna element's contribution to the radiation pattern is controlled by a single binary parameter (phase bit), transforming the complex continuous optimization problem into a discrete selection problem that is computationally simpler.
Data Source
AI summary
The present disclosure a method of transmitting a signal by a user equipment (UE) in a wireless communication system, the method comprising: mapping data to a symbol having a first phase value; determining a beam direction for the data, the UE comprising an antenna array composed of a plurality of antenna elements, and a phase value of each of the plurality of antenna elements being determined based on the determined beam direction; determining each antenna element indication value corresponding to each of the plurality of antenna elements based on the phase value of each of the plurality of antenna elements; generating a beam for data transmission based on each antenna element indication value; and transmitting the data through the generated beam.