Beam Feedback Resource Selection for Long Distance Communication
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Solution Overview
Problem
High frequency communication systems face challenges in beam selection and feedback mechanisms for long distance communication, particularly in determining suitable beams and channel information to support multi-layer transmission.
Innovation Solution
A method and device for feeding back channel information, where a terminal selects and transmits indication or channel state information of resources to a communication node based on agreed or received selection criteria, allowing for effective beam selection and multi-layer transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam mechanisms are used for high frequency communication to support long distance communication, then communication capability is improved, but device complexity increases due to the need for beam selection and feedback mechanisms
Solution Approach 1:
The patent segments the beam management process by dividing beam information into multiple types (first beam information and second beam information) that are fed back through different mechanisms. This segmentation allows the system to handle different aspects of beam management separately, reducing the complexity of the overall feedback mechanism while maintaining reliable communication capability.
Solution Approach 2:
The patent introduces a new dimension for beam information feedback by utilizing uplink data channels (PUSCH) in addition to uplink control channels (PUCCH). This dimensional expansion allows beam information to be transmitted alongside data transmissions, thereby reducing the overall feedback mechanism complexity while preserving communication reliability.
2Adaptability or versatility
If multiple beams are transmitted by base station for terminal selection, then communication versatility is improved, but information loss increases due to challenges in determining suitable beams and channel information
Solution Approach 1:
The patent implements a dual-feedback mechanism where terminals feed back both first beam information (indicating preferred beams) and second beam information (indicating alternative beams or additional channel state information). This comprehensive feedback approach ensures that the base station receives complete channel information across multiple beams, preventing information loss while maintaining versatility in beam selection.
Solution Approach 2:
The patent enables terminals to perform preliminary beam measurements and evaluations across multiple beams before feeding back the results. By conducting these measurements in advance and providing comprehensive beam information to the base station, the system prevents information loss about channel conditions while maintaining the ability to select from multiple beams for versatile communication.
Data Source
AI summary
Provided are a method and device for feeding back and receiving channel information. The method comprises: determining a candidate resource set, selecting M resources from the candidate resource set, and transmitting at least one of indication information or channel state information of the selected M resources to a first communication node, where M is a positive integer; a selection criterion for selecting the M resources from the candidate resource set is determined in at least one of following manners: a selection criterion or a selection criterion set is agreed with the first communication node, and a selection criterion or a selection criterion set is obtained according to received indication information transmitted by the first communication node, and the selection criterion set comprises at least one selection criterion.