UE Uplink Resource Muting for PUSCH and SRS Localization
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Solution Overview
Problem
Existing communication systems face challenges in efficiently utilizing physical uplink shared channel (PUSCH) and uplink reference signals (such as SRS) for user equipment localization and sensing, resulting in lower range and velocity resolution due to the bursty nature of PUSCH and the sparse distribution of SRS, which affects energy efficiency and performance.
Innovation Solution
A method is introduced where a subset of resources allocated for uplink reference signal transmission is muted, allowing for improved energy efficiency by reallocating energy to PUSCH and non-muted SRS resources, thereby enhancing signal-to-noise ratio and improving localization and sensing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resources are allocated for both PUSCH and uplink reference signal transmission, then communication and localization functions are provided, but energy efficiency is reduced due to overlapping resource usage
Solution Approach 1:
The patent extracts and mutes a subset of uplink reference signal resources that overlap with PUSCH resources. By removing these specific resources from active transmission, the system eliminates redundant energy consumption while preserving the essential localization functionality through the remaining non-muted reference signal resources.
Solution Approach 2:
The patent applies local quality by differentiating between muted and non-muted reference signal resources. Instead of uniformly treating all reference signal resources, the system selectively mutes only those that overlap with PUSCH transmissions, maintaining high-quality localization performance where needed while reducing energy consumption in overlapping regions.
2Productivity
If PUSCH resources are allocated for data transmission, then communication throughput is improved, but localization resolution deteriorates due to resource overlap with reference signals
Solution Approach 1:
The patent segments the uplink reference signal resources into muted and non-muted subsets. This segmentation allows the system to preserve specific reference signal resources that do not overlap with PUSCH, thereby maintaining localization resolution while permitting full utilization of PUSCH resources for high-throughput communication.
3Measurement precision
If uplink reference signal resources are increased for better localization, then range and velocity resolution are improved, but energy consumption increases due to redundant transmissions
Solution Approach 1:
The patent removes redundant reference signal transmissions by muting the subset of resources that overlap with PUSCH. This extraction of unnecessary transmissions reduces energy consumption while the remaining non-muted reference signal resources continue to provide accurate range and velocity resolution for localization.
Data Source
AI summary
A user equipment including means for: sending, to an access node, a message for requesting allocation of one or more physical uplink shared channel resources; receiving, from the access node, information indicating resources allocated for one or more physical uplink shared channel transmissions, information indicating that a subset of a plurality of resources allocated for uplink reference signal transmission are to be muted and information indicating a transmission power for non-muted resources and/or a transmission power for the resources allocated for the one or more physical uplink shared channel transmissions; and sending, to the access node, based on the information, one or more physical uplink shared channel transmissions using the resources allocated for the one or more physical uplink shared channel transmissions and one or more uplink reference signal transmissions using non-muted resources allocated for uplink reference signal transmission.