PUSCH CSI Resource Mapping for Miss Detection Robustness
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Solution Overview
Problem
In the context of 5G New Radio (NR), the decoding failure of Physical Uplink Shared Channel (PUSCH) occurs due to miss detection of the first CSI part, leading to incorrect resource allocation for the second CSI part and UL data, resulting in decoding failures at the gNB.
Innovation Solution
Implement resource mapping schemes for Uplink Control Information (UCI) on PUSCH, including frequency-first and time-first mapping, hybrid mapping, and predefined or dynamically indicated starting positions for CSI and UL data, ensuring robust performance and accurate decoding even with miss detection of the first CSI part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resource allocation for CSI parts is dynamically determined based on first CSI part detection, then resource allocation flexibility is improved, but decoding reliability deteriorates due to miss detection propagation
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple resource allocation schemes (first resource allocation scheme and second resource allocation scheme) before transmission. The gNB and UE both prepare multiple possible resource allocations in advance, so that when miss detection occurs, the system can switch to a pre-prepared alternative without propagation of errors, thus maintaining decoding reliability while preserving allocation flexibility.
Solution Approach 2:
The patent implements beforehand cushioning by creating redundancy through multiple resource allocation schemes. This cushioning layer protects against the harmful effect of miss detection propagation - when the first CSI part is missed, the system has pre-prepared fallback allocations that prevent decoding failure, thus cushioning the blow to reliability while maintaining adaptability.
2Adaptability or versatility
If starting position for CSI is dynamically indicated, then resource mapping adaptability is improved, but detection complexity increases leading to miss detection
Solution Approach 1:
The patent applies segmentation by dividing the resource allocation indication into multiple parts: some resource allocation parameters are dynamically indicated while others are pre-configured or follow predetermined rules. This segmentation reduces the detection burden on the UE by not requiring dynamic indication of all parameters, thereby reducing detection complexity and miss detection while maintaining resource mapping adaptability through the dynamically indicated portions.
3Reliability
If robust resource mapping is implemented to prevent miss detection propagation, then decoding reliability is improved, but resource allocation flexibility deteriorates
Solution Approach 1:
The patent applies dynamics by making the resource allocation scheme selectable and switchable between different modes. The system can dynamically choose between first resource allocation scheme (with higher flexibility) and second resource allocation scheme (with higher robustness) based on channel conditions and traffic requirements. This dynamic selection allows the system to achieve both reliability and flexibility - using robust schemes when needed and flexible schemes when conditions permit.
Data Source
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AI summary
Methods and apparatuses for channel state information report on physical uplink shared channel in new radio are provided. An apparatus for a user equipment (UE), comprising: aprocessor, configured to generate a uplink (UL) signal data for a physical uplink shared channel (PUSCH) by using a resource mapping scheme; and a radio frequency (RF) interface, configured to receive the generated UL signal data from the processor, wherein at least a part of the resource mapping scheme is predefined, configured by higher layer signalling, or indicated in downlink control information (DCI).