SRS Pattern Index for Multi-Symbol Transmission
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting SRS signals across multiple symbols in a subframe due to limitations in determining optimal antenna and frequency configurations, leading to latency and reduced throughput.
Innovation Solution
The method involves determining a SRS pattern index for each symbol based on the number of SRS configurations, which is used to select the appropriate antennas or frequency bands for SRS transmission, allowing for efficient SRS transmission across multiple symbols in a subframe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple SRS configurations are used for transmitting SRS signals across multiple symbols in a subframe, then channel state information updates and resource allocation efficiency are improved, but determining optimal antenna and frequency configurations becomes more complex
Solution Approach 1:
The patent segments the SRS transmission process by introducing a SRS pattern index that divides the configuration space into manageable segments. Each pattern index corresponds to specific antenna and frequency configurations, allowing the system to handle multiple SRS configurations through structured segmentation rather than unmanaged complexity
Solution Approach 2:
The patent applies preliminary action by pre-defining SRS patterns and pattern indices before actual SRS transmission. The network configures multiple SRS patterns with associated pattern indices in advance, so that during transmission, the UE can efficiently select and apply pre-determined antenna and frequency configurations without real-time optimization complexity
2Productivity
If SRS pattern index is determined based on a function with value equal to number of SRS configurations, then SRS transmission efficiency across multiple symbols is improved, but calculation and determination complexity increases
Solution Approach 1:
The patent transforms the complex multi-dimensional configuration selection problem into a simpler parameter-based selection by introducing the SRS pattern index as a key parameter. The pattern index changes systematically based on the SRS configuration number, converting complex configuration management into manageable parameter variation that can be handled through standardized functions
3Measurement precision
If multiple antennas or frequency bands are selected for SRS transmission based on SRS pattern index, then channel state information accuracy is improved, but resource allocation complexity and latency increase
Solution Approach 1:
The patent implements periodic action through the systematic determination of SRS pattern indices across multiple symbols. The pattern index follows a periodic pattern based on the SRS configuration number and symbol index, allowing the system to cycle through different antenna and frequency configurations in a structured manner that balances measurement accuracy with timely completion
Data Source
AI summary
Certain aspects of the present disclosure relate to techniques for sounding reference signal (SRS) transmission in multiple SRS symbols in a subframe based on multiple SRS configurations, including determining for each of the multiple symbols a SRS pattern index. In some examples, the present disclosure provides a method of wireless communication by a user equipment (UE). In certain aspects, the method includes receiving, from a base station, information corresponding to a plurality of SRS configurations for a subframe, and determining a plurality of symbols in the subframe for transmitting SRS based on the plurality of SRS configurations.