TRP Phase and Amplitude Feedback via Combining Coefficient Matrix
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Solution Overview
Problem
In coordinated multiple points transmission/reception scenarios, existing technologies face challenges in determining downlink transmission precoding due to the lack of accurate amplitude and phase factors of transmission reception points (TRPs) or TRP groups, which affects data service efficiency.
Innovation Solution
A method for sending and receiving phase and amplitude factors of TRPs or TRP groups based on combining coefficient matrices, where these factors are incorporated into the matrices and sent to network devices, reducing signaling overhead and enabling the network device to determine downlink transmission precoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device directly feeds back the phase factor and amplitude factor to the network device, then the network device can determine downlink transmission precoding, but the signaling overhead is large
Solution Approach 1:
The patent merges the phase factor and amplitude factor into the combining coefficient matrix, where the matrix elements are multiplied by these factors. This integration allows the network device to obtain both precoding information and TRP status information through a single feedback message, eliminating the need for separate signaling channels and reducing overall overhead.
Solution Approach 2:
The combining coefficient matrix serves multiple functions: it provides the precoding information needed for downlink transmission while simultaneously conveying the TRP status information (phase and amplitude factors). This multi-functional approach allows one data structure to fulfill multiple communication purposes, reducing the total signaling required.
2Reliability
If the terminal device feeds back TRP status information separately, then the network device can optimize precoding, but the feedback process becomes complex
Solution Approach 1:
The patent combines TRP status information feedback with precoding feedback into a single operation. The terminal device calculates the combining coefficient matrix and multiplies it by the phase and amplitude factors, then feeds back only this integrated matrix. This single feedback action simultaneously provides both precoding parameters and TRP status information, simplifying the overall feedback process.
Data Source
AI summary
A method for sending a phase factor and an amplitude factor of a transmission reception point (TRP) or TRP group includes: sending at least one factor of the phase factor or the amplitude factor of the TRP or TRP group to a network device based on a combining coefficient matrix of the TRP or TRP group, in which, the TRP group includes at least one TRP.