PUCCH CSI Report Multiplexing for Collision-Free Uplink Feedback
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Solution Overview
Problem
Network devices fail to obtain channel state information (CSI) reports in time or miss them due to collisions and dropping of CSI reports when multiple PUCCH-based CSI reports collide, leading to unreliable network communication.
Innovation Solution
A method and terminal that multiplex multiple PUCCH-based CSI reports with collisions onto multiple multi-CSI PUCCHs using an allocation rule, ensuring that partial or all colliding CSI reports are transmitted, rather than simply dropping low-priority reports, thereby ensuring reliable network communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CSI reports are dropped according to priorities when multiple PUCCH-based CSI reports collide, then uplink transmission resources are saved, but the network device fails to obtain some CSI reports in time or misses CSI reports
Solution Approach 1:
The patent merges multiple colliding CSI reports onto a single PUCCH resource by multiplexing them together. Instead of dropping low-priority reports to save resources, the system combines multiple reports into one transmission opportunity, achieving both resource efficiency and complete report delivery. The terminal multiplexes CSI reports with different priorities onto the same PUCCH resource, allowing the network to receive all necessary CSI information without wasting transmission opportunities.
2Reliability
If multiple PUCCH-based CSI reports are multiplexed onto multi-CSI PUCCHs, then all CSI reports can be transmitted, but the complexity of resource allocation increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple PUCCH resources with different capacities before CSI reports need to be transmitted. The network device预先配置s multiple PUCCH resources (first PUCCH, second PUCCH, etc.) with different maximum CSI report capacities, so that when collisions occur, the terminal can directly select an appropriate resource without complex real-time allocation calculations. This pre-preparation simplifies the actual transmission process while maintaining the ability to deliver all CSI reports reliably.
Data Source
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AI summary
The present disclosure provides a channel state information report transmission method and a terminal. The channel state information report transmission method includes: obtaining an allocation rule of a channel state information (CSI) report transmitted on a physical uplink control channel (PUCCH), where the allocation rule is configured by a network device or predefined in a protocol; when there is a collision between at least two CSI reports, allocating some or all of CSI reports with collisions to a first CSI PUCCH according to the allocation rule; transmitting the some or all of CSI reports with collisions. The first CSI PUCCH is configured to transmit the some or all of CSI reports with collisions.