Two-Way Signaling Calibration for Antenna Module Combining
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Solution Overview
Problem
Existing wireless communications systems face challenges in managing simultaneous communications with multiple antenna modules of a wireless node, leading to signal attenuation, blockage, and reduced performance in terms of speed, data capacity, reliability, and coverage.
Innovation Solution
A method involving two-way signaling between a gNB and a UE is proposed to perform inter-RFIC chip calibration, ensuring that beamforming from each antenna module points to the correct boresight direction by adjusting beam weights based on phase and amplitude responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple antenna modules are used simultaneously for communications, then signal coverage and data capacity are improved, but signal attenuation and blockage occur due to lack of calibration
Solution Approach 1:
The patent changes the parameters of beam weights (phase and amplitude) based on measured channel state information to optimize signal transmission. By adjusting these parameters dynamically, the system achieves coherent combining of signals from multiple antenna modules, improving both coverage area and transmission reliability without causing signal attenuation.
Solution Approach 2:
The patent implements a feedback mechanism where the receiving end measures channel state information and sends beam weight adjustments back to the transmitting end. This closed-loop feedback enables continuous optimization of multi-antenna module coordination, ensuring reliable signal transmission while expanding coverage area through coherent signal combining.
2Area of stationary object
If larger antenna arrays are used to improve coverage, then signal coverage is enhanced, but device complexity and cost increase
Solution Approach 1:
The patent merges the functionality of multiple antenna modules at the receiving end by using coherent combining techniques. Instead of requiring a single large antenna array, the system combines signals from multiple smaller antenna modules through precise beam weight adjustment, achieving equivalent coverage with reduced individual module complexity and lower overall system cost.
Solution Approach 2:
The patent transitions from spatial dimension optimization (larger physical antenna arrays) to signal processing dimension optimization (beam weight adjustment and coherent combining). By operating in the signal processing domain rather than purely in the physical domain, the system achieves extended coverage without proportionally increasing physical antenna array complexity.
3Productivity
If beamforming is applied to multiple antenna elements, then data capacity and speed are improved, but manufacturing precision requirements increase for phase and amplitude alignment
Solution Approach 1:
The patent implements self-calibration where the system automatically measures its own channel state information and determines the appropriate beam weights without requiring external calibration equipment or manual adjustment. This self-service approach maintains high data transmission speeds while reducing manufacturing precision requirements, as the system adapts to actual operating conditions rather than relying on precise factory calibration.
Data Source
AI summary
Certain aspects of the present disclosure provide a method for wireless communications at a user equipment (UE). The UE may receive a first set of transmissions via multiple antenna elements from multiple antenna modules of the UE by using a set of beam weights. One or more of the multiple antenna elements are associated with first parameter information. The UE may transmit a second set of transmissions via the multiple antenna elements by using the set of beam weights. The one or more of the multiple antenna elements are associated with second parameter information. The UE may adjust the set of beam weights in accordance with one or more differences between the first parameter information and the second parameter information.