TCI State Mapping for PUCCH Resource Groups in Multi-TRP Uplinks
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Solution Overview
Problem
Existing wireless communication systems face challenges in optimizing resource allocation for physical uplink control channels, particularly in determining associations between transmission configuration indicator states and physical uplink control channel resource groups, which affects data transmission efficiency.
Innovation Solution
An apparatus and method for determining associations between two transmission configuration indicator states and physical uplink control channel resource groups using pre-configurations and downlink control information elements, allowing for efficient resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE transmits multiple A-CSI reports in different PUCCH resources simultaneously, then the uplink control information coverage is improved, but uplink control information interference occurs
Solution Approach 1:
The A-CSI report is segmented into multiple parts, where the first A-CSI report contains wideband CSI and is transmitted in a first PUCCH resource, while the second A-CSI report contains subband CSI and is transmitted in a second PUCCH resource. This segmentation allows different components of the CSI to be transmitted separately, improving reliability while managing interference through selective combination at the receiver side.
2Measurement precision
If multiple A-CSI reports are transmitted in different PUCCH resources, then CSI accuracy is improved, but processing complexity increases
Solution Approach 1:
Different parts of the CSI report are allocated to different PUCCH resources based on their specific requirements. The wideband CSI (first A-CSI report) is transmitted in one resource while the subband CSI (second A-CSI report) is transmitted in another resource. This local quality approach optimizes the transmission of each CSI component according to its characteristics, improving overall CSI accuracy while managing processing complexity through structured handling.
3Reliability
If A-CSI reports are transmitted in multiple PUCCH resources, then uplink control information reliability is improved, but resource conflict occurs
Solution Approach 1:
The patent implements dynamic resource selection and combination mechanisms where the network can dynamically configure which PUCCH resources are used for transmitting different A-CSI reports. The receiving end dynamically combines the first and second A-CSI reports based on received indicators, allowing the system to adapt to varying channel conditions and traffic patterns, thereby improving reliability while managing resource conflicts through flexible dynamic allocation.
Data Source
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AI summary
Disclosed is a method comprising receiving a first information element, wherein the first information element indicates at least one transmission configuration indicator state, receiving a second information element, and determining, based on the second information element, an association between the at least one transmission configuration indicator state and at least one physical uplink control channel resource group.