Uplink SRS Resource Configuration for Intra-Slot Time Bundling
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Solution Overview
Problem
Current 5G wireless systems face challenges in efficiently configuring uplink sounding reference signals (SRS) due to power imbalance and increased overhead, which affects coverage and quality of channel state information (CSI) acquisition, especially at higher carrier frequencies and with frequency hopping.
Innovation Solution
The proposed solution involves configuring uplink SRS resources with adaptive transmission bandwidth and repetition factors across SRS occasions, allowing for intra-slot and inter-slot time bundling, and using different repetition factors for consecutive and non-consecutive symbols to balance power distribution and reduce overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If adaptive transmission bandwidth and repetition factors are configured across SRS occasions, then power imbalance is mitigated and CSI acquisition quality is enhanced, but device complexity and configuration overhead increase
Solution Approach 1:
The patent implements dynamic SRS resource configuration where transmission bandwidth and repetition factors are adaptively adjusted across different SRS occasions based on channel conditions and power requirements. This allows the system to optimize CSI acquisition quality by varying parameters in real-time rather than using fixed configurations, directly resolving the contradiction between measurement precision and device complexity through controlled adaptability.
Solution Approach 2:
The patent changes physical parameters (transmission bandwidth and repetition factors) of SRS resources to mitigate power imbalance and enhance CSI acquisition. By systematically varying these parameters across different SRS occasions and applying different repetition factors for consecutive and non-consecutive symbols, the patent improves measurement precision while managing configuration complexity through structured parameter adjustment.
2Loss of energy
If different repetition factors are used for consecutive and non-consecutive symbols, then power distribution is balanced and transmission overhead is reduced, but configuration complexity increases
Solution Approach 1:
The patent applies different repetition factors to different symbol types (consecutive vs. non-consecutive) based on their specific requirements. This local differentiation allows the system to reduce transmission overhead where possible while maintaining necessary repetitions for power balancing, thereby reducing overall energy loss without requiring uniform complex configuration across all symbols.
Solution Approach 2:
The patent segments SRS transmission into different symbol categories (consecutive and non-consecutive) and applies distinct repetition factor configurations to each segment. This segmentation enables targeted optimization of transmission overhead reduction while managing configuration complexity through structured, category-specific rules rather than uniform complex configuration.
Data Source
AI summary
Systems, methods, apparatuses, and computer program products for uplink (UL) sounding reference signal (SRS) resource configuration may be provided. UL SRS resource configuration and related transmission procedures for intra-slot and inter-slot time bundling of one or more resources may be provided. In this regard, transmission bandwidth and/or repetition factors may be adapted for SRS occasions. The adaptation may be performed across an SRS bandwidth, and on an intra-slot or inter-slot basis.