Dual-Polarized Beam Virtualization for Wide-Beam 5G Access
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Solution Overview
Problem
Current 5G wireless communication systems face inefficiencies in initial access procedures due to the use of wide antenna beams with reduced gain, which can lead to performance issues during synchronization and limited-time communication sessions.
Innovation Solution
A method involving a dual-polarized antenna array with configurable beamforming weights for both transmission and reception, allowing for the generation of wide beam patterns that are less sensitive to polarization fluctuations, thereby improving signal reception and coverage area adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If wide antenna beams are used for initial access, then coverage area is improved, but gain is reduced
Solution Approach 1:
The patent segments the reception function into two independent receive antenna ports with different polarizations. Each port processes signals independently through separate beamforming weights, allowing the system to capture signals regardless of their polarization state. This segmentation resolves the contradiction by maintaining wide beam coverage while improving effective gain through polarization diversity.
Solution Approach 2:
The patent changes the polarization parameter of receive antenna ports to be different from each other. By configuring receive beamforming weights for two receive antenna ports with different polarizations, the system becomes less sensitive to polarization fluctuations in received signals, thereby improving effective gain while maintaining wide beam coverage area.
2Power
If narrow high gain antenna beams are used, then antenna gain is improved, but sensitivity to polarization fluctuations increases
Solution Approach 1:
The patent segments the reception function into two independent receive antenna ports with different polarizations. Each port processes signals independently through separate beamforming weights, allowing the system to capture signals regardless of their polarization state. This segmentation resolves the contradiction by maintaining wide beam coverage while improving effective gain through polarization diversity.
Solution Approach 2:
The patent changes the polarization parameter of receive antenna ports to be different from each other. By configuring receive beamforming weights for two receive antenna ports with different polarizations, the system becomes less sensitive to polarization fluctuations in received signals, thereby improving effective gain while maintaining wide beam coverage area.
3Loss of time
If wide beams are used for limited time communication sessions, then setup overhead is reduced, but communication performance deteriorates
Solution Approach 1:
The patent segments the reception function into two independent receive antenna ports with different polarizations. Each port processes signals independently through separate beamforming weights, allowing the system to capture signals regardless of their polarization state. This segmentation resolves the contradiction by maintaining wide beam coverage while improving effective gain through polarization diversity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the resilience to gain fluctuations and signal quality variations, improving communication performance by maintaining consistent received power across different polarizations and enabling efficient coverage adjustments.
Implementation Method 1
configuring the antenna array for transmission by a first set of beamforming weights wTX1, wherein the first set of beamforming weights is arranged to provide a transmit antenna port connected to antenna elements of a first polarization and of a second polarization
Implementation Method 2
receiving a second signal on an uplink of the wireless access network, via the first receive antenna port and the second receive antenna port
Data Source
AI summary
A method of configuring a dual polarized antenna array for communication between a wireless device (120) and a wireless access network (100), the antenna array comprising antenna elements with respective polarizations, where each antenna element is associated with a respective beamforming weight, the method comprising configuring the antenna array for transmission by a first set of beamforming weights wTX1, wherein the first set of beamforming weights is arranged to provide a transmit antenna port connected to antenna elements of a first polarization and of a second polarization, wherein the transmit antenna port is associated with an antenna power pattern; transmitting a first signal via the transmit antenna port on a downlink, DL, from the antenna array to the wireless device; configuring the antenna array for reception by a second wRX1 and a third wRX2 set of beamforming weights, wherein the second set of beamforming weights wRX1 is arranged to provide a first receive antenna port connected to antenna elements of the first and of the second polarization, wherein the third set of beamforming weights wRX2 is arranged to provide a second receive antenna port connected to antenna elements of the first and of the second polarization, where each of the receive antenna ports is associated with the antenna power pattern, and where the receive antenna ports have different polarizations; and receiving a second signal on an uplink, UL, from the wireless device (120) to the antenna array, via the first receive antenna port and the second receive antenna port.