Dynamic SRS Time Domain Parameter Adaptation for Wireless UEs
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Solution Overview
Problem
Current wireless communication systems face challenges in dynamically adapting sounding reference signal (SRS) time domain parameters, leading to inefficiencies in channel estimation and resource allocation, particularly in scenarios with varying user equipment (UE) mobility and channel conditions.
Innovation Solution
The method involves dynamically modifying the time domain parameters of SRS resources, allowing for adaptive configuration of SRS patterns based on real-time UE conditions, such as mobility, signal-to-noise ratio (SNR), and channel characteristics, through dynamic indications transmitted between the UE and network nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If static SRS time domain parameters are used, then configuration simplicity is maintained, but adaptability to varying UE mobility and channel conditions deteriorates
Solution Approach 1:
The patent applies dynamics by transitioning from static SRS time domain parameters to dynamic parameters that can be modified based on real-time UE conditions. The network node dynamically adjusts time domain parameters such as SRS symbol allocation, periodicity, and offset according to detected UE mobility and channel conditions, enabling the system to adapt to varying operational requirements while maintaining manageable configuration complexity through automated adjustments.
2Productivity
If SRS time domain parameters are dynamically adapted, then channel estimation efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent applies parameter changes by modifying specific time domain parameters of SRS resources based on detected UE conditions. The network node changes parameters such as the set of time domain parameters, periodicity, and symbol allocation dynamically. This targeted parameter adjustment optimizes channel estimation efficiency for different UE mobility scenarios while minimizing the overall signaling overhead by only modifying necessary parameters rather than reconfiguring the entire SRS setup.
3Productivity
If fixed SRS configuration is used, then implementation simplicity is maintained, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent applies feedback mechanisms where the network node detects UE mobility and channel conditions, uses this feedback information to determine optimal SRS time domain parameters, and adjusts the configuration accordingly. This feedback-driven approach optimizes resource allocation efficiency by aligning SRS transmission with actual network needs while maintaining implementation simplicity through automated parameter selection based on detected conditions.
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 sounding reference signal (SRS) configuration for SRS resources included an SRS resource set. The SRS configuration includes one or more first time domain parameters for the SRS resources. The UE may receive a dynamic indication of one or more second time domain parameters for the SRS resources. At least a subset of the one or more second time domain parameters are modified from the one or more first time domain parameters included in the SRS configuration. The UE may transmit, based at least in part on the one or more second time domain parameters, an SRS using the SRS resources. Numerous other aspects are described.