Beam Index Feedback Channel for NR-V2X Reference Signal Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In NR-V2X systems, designing an effective feedback channel to transmit feedback information, such as beam index information, is crucial for optimizing multi-antenna transmission and supporting various transmission methods like unicast, groupcast, and broadcast.
Innovation Solution
The proposed solution involves a method where a first terminal receives N groups of reference signals from a second terminal, selects a target reference signal, and sends index information of the target reference signal to the second terminal through a feedback channel. The transmission resources for the reference signals and the control channel are in a pattern of time division, and the feedback channel is designed to carry index information and other feedback data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming is used in multi-antenna transmission to improve transmission distance and reception performance, then the transmission quality is improved, but the complexity of selecting optimal beam and feedback mechanism increases
Solution Approach 1:
The patent divides the beam selection process into discrete segments by assigning index values to different beams. The receiving end evaluates multiple beams and feeds back the index of the optimal beam, allowing the sending end to select from predefined beam segments rather than continuously adjusting, thus reducing complexity while maintaining reception performance.
Solution Approach 2:
The patent implements a feedback mechanism where the receiving end sends back index information about the optimal beam to the sending end. This feedback loop enables the sending end to adapt its beam selection based on actual reception conditions, improving reliability without requiring complex real-time optimization algorithms.
2Reliability
If feedback channel transmits beam index information to enable multi-beam reception, then reception performance is improved, but the transmission resources and time required for feedback increase
Solution Approach 1:
The patent changes the feedback mechanism from transmitting full beam information to transmitting compressed index values. By representing beam information as discrete indices rather than complete parameter sets, the feedback channel achieves the necessary information transfer with reduced time and resource consumption.
Solution Approach 2:
The patent transmits only the essential index information needed for beam selection rather than all possible beam parameters. This partial action approach provides sufficient feedback for optimal beam selection while minimizing the time and resources required for feedback transmission.
Data Source
AI summary
The present disclosure discloses an information feedback method, an apparatus and a storage medium. The method includes: receiving, by a first terminal, N groups of reference signals sent by a second terminal, N being a positive integer, where transmission resources of the reference signals of different groups are in a pattern of time division; selecting, by the first terminal, a target reference signal based on the received N groups of reference signals; and sending, by the first terminal, index information of the target reference signal to the second terminal, where the index information is carried in a feedback channel.