mmWave Control Sub-region Segmentation for Beamforming Alignment
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Solution Overview
Problem
Millimeter wave (mmWave) communication systems face challenges due to control message decoding delays, which hinder the application of correct analog receive beamforming, leading to signal mismatch and reduced data transmission efficiency in high frequency bands.
Innovation Solution
The method involves dividing control and data transmission regions into sub-regions, allowing for decoding and beamforming adjustments before data transmission starts, and applying scheduling restrictions to ensure proper beamforming parameters are used, thereby minimizing delays and improving signal reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If control message decoding is performed before data transmission in mmWave communication, then beamforming alignment is improved, but transmission delay increases
Solution Approach 1:
The control transmission portion is divided into multiple control transmission portion sub-regions, where earlier sub-regions schedule later data transmission portions. This segmentation allows the system to process control messages for future data portions while transmitting current data, effectively overlapping processing and transmission to reduce overall delay while maintaining beamforming alignment accuracy.
Solution Approach 2:
The system performs demodulation and decoding of control transmission portion sub-regions in advance before the corresponding data transmission portions begin. By preparing beamforming parameters preliminarily through early control message processing, the system ensures beamforming alignment is ready when data transmission starts, eliminating waiting time and reducing overall transmission delay.
2Measurement precision
If scheduling restrictions are applied to control transmission portions, then beamforming parameter accuracy is improved, but system flexibility decreases
Solution Approach 1:
The system dynamically adjusts scheduling restrictions based on the timing relationships between control transmission portion sub-regions and data transmission portions. By making the scheduling flexible and adaptive to specific transmission scenarios, the system maintains beamforming parameter accuracy while preserving necessary scheduling flexibility for different communication conditions.
Data Source
AI summary
In a first example embodiment, a control transmission portion of a mmWave communication is received at a user equipment. The control transmission portion is divided into a plurality of control transmission portion sub-regions, each sub-region scheduling a data transmission for a corresponding sub-region of a data transmission portion of the mmWave communication. Then a first of the control transmission portion sub-regions is demodulated and decoded. A receive analog antenna beamforming is armed according to the demodulated and decoded first of the control transmission portion sub-regions. Beamforming is performed on a first sub-region of the data transmission portion of the mmWave communication, the first sub-region of the data transmission portion corresponding to the first of the control transmission portion sub-regions. During the arming and performing, a second of the control transmission portion sub-regions is demodulated and decoded.