Dual Codebook Feedback for RIS and Network Beamforming
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Solution Overview
Problem
Existing technologies fail to address the challenge of optimizing beamforming in wireless communication systems, specifically in the context of reconfigurable intelligent meta-surfaces, where the beamforming process is not optimized for enhancing coverage in wireless communication systems.
Innovation Solution
A method and apparatus for codeword transmission, specifically involving the transmission of the codeword transmission method, apparatus, and storage medium, including the transmission of a configuration message with a measurement signal and a codeword indicator to determine beamforming codewords for both a network device and a reconfigurable intelligent meta-surface (RIS), enhancing coverage in wireless communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional codeword feedback-based beamforming technology is used, then the base station can perform beamforming, but the RIS cannot perform beamforming because the technology does not support feeding back a beamforming codeword for the RIS
Solution Approach 1:
The patent segments the beamforming feedback process into two distinct parts: a first codeword for base station beamforming and a second codeword for RIS beamforming. This segmentation allows each component to have its dedicated feedback mechanism, enabling both base station and RIS to perform beamforming independently while maintaining clear separation of their respective control information streams.
Solution Approach 2:
The patent introduces a new dimension to the traditional beamforming feedback by adding RIS-specific beamforming capability. Instead of extending the existing single-dimension base station feedback, it creates a parallel feedback channel for RIS, effectively adding another layer to the beamforming control architecture without interfering with the original base station functionality.
2Adaptability or versatility
If a configuration message includes both measurement signal and codeword indicator, then the terminal can determine beamforming codewords for both network device and RIS, but the message structure becomes more complex
Solution Approach 1:
The patent merges the measurement signal and codeword indicator into a single integrated configuration message. By combining these elements that were traditionally separate, the system enables joint determination of both base station and RIS beamforming codewords within one message structure, reducing the number of signaling interactions while maintaining comprehensive control capability.
Solution Approach 2:
The configuration message is designed with multi-functionality to serve dual purposes: it simultaneously provides measurement signals for channel assessment and codeword indicators for beamforming determination. This universal message structure eliminates the need for separate signaling for different functions, streamlining the overall control process despite the increased information density.
Data Source
AI summary
Provided in the embodiments of the present disclosure are a codebook transmission method, an apparatus and a storage medium. The method is applied to a terminal, and includes receiving a configuration message sent by a network device, the configuration message including a measurement signal and a codebook indication; on the basis of the measurement signal and the codebook indication, determining a first codebook and a second codebook, the first codebook being used for determining a beamforming codebook used by the network device, and the second codebook being used for determining a beamforming codebook used by an RIS; and sending the first codebook and the second codebook to the network device.