SRS Configuration Switching for Antenna Capability Limits
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Solution Overview
Problem
Wireless communication systems face challenges in managing sounding reference signal (SRS) resource switching due to hardware limitations and shared antenna configurations, leading to degraded SRS transmission quality and suboptimal network performance.
Innovation Solution
User equipment (UE) determines when a received SRS configuration exceeds its antenna capability and switches to a second SRS configuration, which may involve blanking or alternating antenna usage, to ensure effective SRS transmission and improve network reliability and throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE transmits SRS using the first SRS configuration with multiple antenna ports, then the network performance and throughput are improved, but the hardware limitations and shared antenna configurations cause transmission quality degradation
Solution Approach 1:
The UE dynamically switches between first and second SRS configurations based on real-time conditions. When the first configuration (multiple antenna ports) can be supported, the UE uses it for high throughput. When hardware limitations or shared antenna conflicts arise, the UE transitions to the second configuration (single antenna port), ensuring reliable transmission. This dynamic adaptation resolves the contradiction between maximizing productivity and maintaining reliability.
Solution Approach 2:
The patent changes the SRS transmission parameters by switching between different configurations. The first configuration uses multiple antenna ports (e.g., 2 or 4 ports) for high throughput, while the second configuration uses a single antenna port for reliable transmission. By changing these parameters based on hardware capability and shared antenna status, the system achieves both high productivity when possible and maintains reliability when constraints exist.
2Device complexity
If the UE uses shared antenna configurations for multiple purposes, then the device complexity is reduced, but the SRS transmission quality and network reliability are degraded
Solution Approach 1:
The UE implements dynamic detection and switching mechanisms to monitor whether shared antennas are available for SRS transmission. When shared antennas are in use for other purposes, the UE detects this condition and switches to the second SRS configuration using a dedicated antenna port, ensuring reliable transmission. This dynamic approach maintains simple hardware architecture while preserving transmission reliability through intelligent configuration switching.
Solution Approach 2:
The UE autonomously detects its own hardware limitations and shared antenna usage status, then self-adjusts the SRS configuration accordingly. The UE monitors its antenna availability and automatically switches between configurations without external intervention, ensuring reliable SRS transmission while maintaining simple shared antenna architecture. This self-service mechanism resolves the contradiction between device simplicity and transmission reliability.
3Reliability
If the UE switches to the second SRS configuration due to antenna capability limitations, then the SRS transmission reliability is maintained, but the network throughput and productivity are reduced
Solution Approach 1:
The system dynamically switches between first and second SRS configurations based on real-time antenna availability. When shared antennas are available, the UE uses the first configuration for high throughput. When shared antennas are occupied, the UE transitions to the second configuration for reliable transmission. This dynamic switching ensures that the system achieves high productivity when possible while maintaining reliability when constraints exist, resolving the contradiction between these two objectives.
Solution Approach 2:
The patent changes SRS transmission parameters by switching between configurations with different antenna port counts. The first configuration uses multiple antenna ports (2 or 4 ports) for high throughput when hardware allows. The second configuration uses a single antenna port for reliable transmission when hardware limitations exist. By changing these parameters based on capability detection, the system achieves both high productivity when possible and maintains reliability when necessary.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a first sounding reference signal (SRS) configuration, wherein the first SRS configuration indicates a number of antenna ports on which an SRS is to be transmitted. The UE may determine that the number of antenna ports indicated by the first SRS configuration exceeds an antenna capability of the UE. The UE may transmit one or more SRSs using a second SRS configuration based at least in part on determining that the first SRS configuration exceeds the antenna capability of the UE. Numerous other aspects are described.