Joint CSI Reporting for Inter-Cell Interference Management
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting control information and resource allocation, particularly in handling inter-cell interference and time-varying channel conditions, which affects system performance and reliability.
Innovation Solution
A method for reporting channel state information (CSI) using a joint coding scheme across multiple CSI report sets, allowing user equipment to transmit CSI for multiple restricted subsets on the Physical Uplink Control Channel (PUCCH) or PUSCH, enabling adaptive feedback that reflects time-varying inter-cell interference and channel quality variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate coding schemes are used for each CSI report set, then the transmission of CSI for multiple restricted subsets is simplified, but the resource overhead and system complexity increase
Solution Approach 1:
The patent applies merging by combining multiple separate CSI report sets into a single joint coded transmission. Instead of encoding each restricted subset's CSI separately, the invention merges them into one unified coded message that contains CSI for multiple restricted subsets, thereby reducing resource overhead and simplifying the transmission process while maintaining the ability to handle time-varying inter-cell interference
2Measurement precision
If resource allocation is increased to transmit CSI for multiple restricted subsets, then the accuracy of channel state information reporting is improved, but the resource overhead increases
Solution Approach 1:
The patent applies universality by creating a multi-functional joint coding scheme that can transmit CSI for multiple restricted subsets within a single resource allocation. This universal coding approach allows the same resource to serve multiple purposes (transmitting CSI for different restricted subsets simultaneously), thereby improving measurement precision without proportionally increasing resource overhead
Data Source
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AI summary
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for reporting channel state information (CSI), wherein the method in which a terminal reports CSI comprises the steps of: receiving configuration information for periodic CSI reporting from a base station; and transmitting CSI information for each of a plurality of sets of CSI reports based on said configuration information to said base station via a physical uplink control channel (PUCCH). Said plurality of sets of CSI reports contains one or more mutually different subframes.