CSI Feedback Segmentation Across Uplink Resources for Complete Recovery
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Solution Overview
Problem
Existing CSI feedback methods in AI/ML-based wireless communication systems face challenges in effectively transmitting channel state information due to insufficient allocation of uplink transmission resources, leading to incomplete or inaccurate CSI recovery at the base station.
Innovation Solution
The method involves splitting first CSI into at least two pieces of sub-CSI, which are then fed back over separate uplink transmission resources, allowing for complete recovery at the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single uplink transmission resource is allocated for CSI feedback, then resource allocation is simple, but the CSI cannot be transmitted completely and accurately
Solution Approach 1:
The patent divides the CSI feedback into multiple parts by splitting the CSI into first CSI and second CSI, where the first CSI is transmitted on a first uplink transmission resource and the second CSI is transmitted on a second uplink transmission resource. This segmentation allows complete CSI transmission while maintaining manageable resource allocation complexity through structured division of the feedback content.
2Productivity
If multiple CSI reports are transmitted over the same uplink transmission resource, then resource utilization is improved, but the transmission becomes conflicting and incomplete
Solution Approach 1:
The patent segments the CSI feedback process into multiple transmission resources, assigning the first CSI to a first uplink transmission resource and the second CSI to a second uplink transmission resource. This eliminates transmission conflicts while maintaining high resource utilization efficiency by strategically distributing CSI components across multiple resources rather than overloading a single resource.
3Productivity
If part of the CSI bits are dropped to fit the uplink transmission resource, then the transmission resource is fully utilized, but the base station cannot recover the compressed channel information
Solution Approach 1:
The patent segments the CSI into distinct first CSI and second CSI portions, transmitting them on separate uplink transmission resources. This segmentation ensures that no CSI bits are dropped or truncated, maintaining full information integrity for channel recovery while achieving optimal resource utilization by distributing the complete CSI across multiple resources.
Solution Approach 2:
The patent transitions from a single-dimensional transmission approach to a multi-dimensional approach by utilizing multiple uplink transmission resources in different time slots or frequency domains. This dimensional expansion allows the complete CSI to be transmitted without truncation, maintaining information integrity while fully utilizing the available transmission capacity across the expanded resource space.
Data Source
AI summary
Provided are a channel state information feedback method, a channel state information receiving method, a communication node, and a storage medium. The feedback method includes splitting channel state information corresponding to at least one CSI report into C pieces of sub-channel state information, and transmitting all or part of the C pieces of sub-channel state information over at least two uplink transmission resources. The multiple uplink transmission resources satisfy a preset timing relation, and the transmission content on an uplink transmission resource is determined according to the preset timing relation.