SRS Resource Reuse and Collision Handling for Antenna Selection
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Solution Overview
Problem
Wireless communications systems face inefficiencies and complexities due to the increasing number of different sounding reference signal (SRS) usages and resource sets, leading to resource-intensive separate transmissions and increased likelihood of collisions, which complicates scheduling and resource management.
Innovation Solution
The proposed solution involves reusing SRS resources for multiple usages, such as antenna selection and codebook usage, and implementing collision-handling techniques with prioritization rules to determine which SRS resource to use or drop, along with reporting antenna selection results to improve SRS resource set configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate SRS transmissions are used for different usages (antenna selection, codebook, beam management), then measurement precision and reliability are improved, but resource consumption and scheduling complexity increase
Solution Approach 1:
The patent enables a single SRS resource to serve multiple usages (antenna selection, codebook, beam management) simultaneously by configuring usage indicators and prioritization rules. This multi-functionality approach allows the same time-frequency resource to be reused across different SRS resource sets, reducing overall resource consumption while maintaining measurement capabilities for all usages.
Solution Approach 2:
The patent merges multiple SRS resource sets that previously required separate transmissions into a unified resource structure. By allowing overlap and reuse of SRS resources across different usage types, the system combines multiple functions into a single resource framework, reducing the total quantity of SRS resources needed while maintaining all required measurement functions.
2Adaptability or versatility
If multiple SRS resource sets are configured for different usages, then adaptability and functionality are improved, but device complexity and scheduling difficulty increase
Solution Approach 1:
The patent introduces dynamic prioritization mechanisms where SRS transmissions are assigned different priorities based on usage type, resource set configuration, and current channel conditions. This dynamic approach allows the system to adaptively manage multiple SRS resource sets with different usages, enabling complex functionality while simplifying scheduling decisions through structured priority rules rather than complex real-time negotiations.
Solution Approach 2:
The patent changes the parameter structure by introducing usage indicators and priority levels as configurable parameters for each SRS resource set. This parameterization approach allows the system to handle multiple usages (antenna selection, codebook, beam management) with standardized configuration parameters, reducing scheduling complexity while maintaining high adaptability across different usage scenarios.
3Productivity
If SRS resources are reused across multiple usage types, then resource utilization efficiency is improved, but collision likelihood and handling complexity increase
Solution Approach 1:
The patent converts the potential harm of SRS collisions into a beneficial resource reuse opportunity by establishing prioritization rules and collision handling mechanisms. When SRS resources overlap across different usage types, the system applies priority-based resolution (e.g., antenna selection SRS takes priority over codebook SRS) to determine which transmission proceeds. This approach transforms what would be harmful collisions into efficient resource sharing, improving overall utilization while managing interference through structured priority rules.
Solution Approach 2:
The patent introduces prioritization rules and collision handling mechanisms as intermediary layers between conflicting SRS transmissions. These intermediaries (priority levels, usage indicators) mediate the conflict between simultaneous SRS transmissions by providing a systematic method to resolve collisions, allowing resource reuse while controlling the harmful effects through structured arbitration rather than random or ad-hoc conflict resolution.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In some examples, a user equipment (UE) uses a same sounding reference signal (SRS) resource for multiple usages, such as for an antenna selection operation and a codebook operation to facilitate efficient SRS utilization. In some examples, rather than reusing the same SRS resources, different SRS resource sets are configured for different usages, respectively, and the different SRS resources may partially or completely overlap (e.g., collide) in a time and/or a frequency, with SRS collisions handled based on different priorities associated with the different SRS resource sets. Based on one or more transmitted SRSs, the UE receives from a network entity an indication of candidate antenna selection results or SRS measurements, which the UE to uses to make and report a final antenna selection.