Fractional Beamforming Feedback via Segmented PMI and Linking Coefficients
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting feedback information for fractional beamforming, particularly in systems with multiple antennas, which affects the accuracy and reliability of beamforming modes selection and precoding matrix indexing.
Innovation Solution
A method and apparatus for transmitting feedback information from user equipment (UE) to a network for fractional beamforming, involving the reception of reference signals from multiple antennas, selection of beamforming modes, and configuration of feedback information including precoding matrix indices and linking coefficient information, enabling efficient reporting of channel quality and rank indicators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If feedback information for fractional beamforming is transmitted in current wireless communication systems, then beamforming modes selection and precoding matrix indexing can be performed, but the accuracy and reliability are insufficient due to inefficient feedback transmission
Solution Approach 1:
The feedback information is segmented into multiple parts including precoding matrix index information for first antenna partitions, precoding matrix index information for second antenna partitions, and linking coefficient information. This segmentation allows each component to be efficiently encoded and transmitted separately, improving overall feedback accuracy and reliability for fractional beamforming
Solution Approach 2:
The patent implements a feedback mechanism where the user equipment transmits channel state information back to the base station, enabling the base station to select appropriate beamforming modes and precoding matrices. The feedback includes structured information about antenna partitions and linking coefficients, which enhances the reliability of beamforming operations through iterative optimization
2Productivity
If multiple antenna partitions are used for fractional beamforming, then beamforming performance is improved, but the complexity of feedback information configuration increases
Solution Approach 1:
The antenna array is divided into multiple partitions (first antenna partitions and second antenna partitions), each with its own precoding matrix index. This segmentation enables independent optimization of each partition while maintaining overall system performance, managing the complexity through modular structure
Solution Approach 2:
The patent introduces linking coefficient information as an additional dimension to connect different antenna partitions. This linking mechanism operates in a separate informational dimension, allowing the system to manage multiple partitions without linearly increasing configuration complexity, as the linking coefficients provide a structured way to relate partitions together
Data Source
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AI summary
Disclosed is a method for transmitting, by a terminal, feedback information to a network for partial beamforming based on a multi-antenna in a wireless communication system. Specifically, the method comprises: a step of receiving, from the network, reference signals corresponding to antenna sections included in the multi-antenna; a step of selecting one or more beamforming mode among beamforming modes included in a candidate beamforming mode set on the basis of the reference signals, and forming feedback information related to the selected one or more beamforming modes; and a step of transmitting the feedback information to the network, and the feedback information includes a pre-coding matrix index corresponding to at least one of the antenna sections and connection coefficient information for connecting the antenna sections.