Phased Array Beam Squint Control for Mobile Wireless Links
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Solution Overview
Problem
The challenge is to enhance wireless communication efficiency in electronic devices with phased antenna arrays, particularly addressing beam squinting effects that limit performance at higher frequencies and during device movement, while maintaining reliable connections despite over-the-air attenuation and obstacles.
Innovation Solution
Implementing a communication system with reconfigurable intelligent surfaces (RIS) and phased antenna arrays that leverage beam squint to optimize modulation coding schemes, transmit power levels, reference signal allocation, beam width, and frequency domain resource allocation, allowing for dynamic adjustments to maintain effective wireless signals even as user equipment devices move.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If phased antenna arrays operate at higher frequencies to support data-intensive applications, then data rates are improved, but beam squinting effects worsen and limit wireless performance
Solution Approach 1:
The system dynamically adjusts beamforming parameters including phase shifts, amplitude weights, and beam directions across different frequency sub-bands. This dynamic adaptation allows the phased antenna array to maintain optimal beam patterns despite frequency variations, resolving the beam squinting issue while preserving high data rates through efficient resource allocation and real-time parameter optimization
Solution Approach 2:
The patent changes multiple parameters including phase shifts, amplitude weights, beam directions, and resource allocation strategies across different frequency sub-bands. By systematically adjusting these parameters to compensate for beam squinting effects, the system maintains reliable wireless performance at higher frequencies while supporting data-intensive applications
2Device complexity
If phased antenna arrays use fixed beamforming parameters, then device complexity is reduced, but communication reliability deteriorates during device movement
Solution Approach 1:
The system implements dynamic beamforming where parameters such as phase shifts, amplitude weights, and beam directions are continuously adjusted based on device movement and channel conditions. This dynamic approach maintains reliable communication connections during mobility while managing device complexity through efficient algorithms and resource allocation strategies
Solution Approach 2:
The patent employs feedback mechanisms where the system monitors communication quality and device position, then adjusts beamforming parameters accordingly. This closed-loop control maintains connection reliability during device movement while managing complexity by only adjusting parameters when and where needed based on actual communication requirements
3Reliability
If sub-band allocation is adjusted to track moving UE devices, then communication reliability is improved, but phase and magnitude settings must be changed increasing complexity
Solution Approach 1:
The system dynamically reallocates sub-bands and adjusts beamforming parameters in response to UE device movement. By coordinating sub-band allocation with beamforming parameter adjustments, the system maintains reliable communication connections while managing complexity through integrated resource management and efficient algorithms that adapt to changing channel conditions
Data Source
AI summary
A communication system may include a wireless base station (BS), one or more user equipment (UE) devices, and optionally one or more reconfigurable intelligent surfaces (RIS's). Phased antenna arrays may be implemented on one or more of these devices. The phased antenna arrays may exhibit beam squint. The beam squint may be leveraged to optimize communications efficiency in the system. For example, a transmit device may leverage beam squint to perform modulation coding scheme (MCS) adjustment, transmit power level adjustment, reference signal allocation, beam width adjustment, frequency domain resource allocation, carrier aggregation band selection, and/or beam management procedures. Beam squint may also be leveraged to ensure that satisfactory communications are maintained between the BS and the UE devices even as the UE devices move over time.