Uplink Reference Signal Muting for Localization Resolution
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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, leading to lower range and velocity resolution due to the bursty nature of PUSCH and the unknown content at the access node.
Innovation Solution
A method is introduced where a subset of resources allocated for uplink reference signal transmission is muted, allowing for improved energy efficiency and enhanced localization and sensing performance by reallocating energy to non-muted resources, thereby increasing the signal-to-noise ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If resources are allocated for both PUSCH transmissions and uplink reference signal transmissions, then the system can support both data communication and localization/sensing functions, but the energy is分散 and the signal-to-noise ratio is reduced
Solution Approach 1:
The patent extracts a subset of uplink reference signal resources to be muted, separating them from the active transmission resources. This allows energy to be concentrated on non-muted resources while maintaining the localization function through the muted resources, thereby improving both measurement precision and energy efficiency
Solution Approach 2:
The patent applies local quality by differentiating between muted and non-muted resources within the uplink reference signal transmission. Different resources have different functions: muted resources are used for localization/sensing while non-muted resources are used for data transmission, optimizing the system performance in different local regions of the resource space
2Measurement precision
If a subset of uplink reference signal resources is muted for localization and sensing, then the localization resolution is improved, but the number of resources available for data transmission is reduced
Solution Approach 1:
The patent segments the uplink reference signal resources into two distinct parts: a muted subset used for localization and sensing, and a non-muted subset used for data transmission. This segmentation allows each part to be optimized for its specific function, improving localization resolution while maintaining data transmission capacity
Solution Approach 2:
The uplink reference signal resources serve multiple functions: the muted subset provides localization and sensing capabilities while the non-muted subset maintains data transmission. This multi-functionality allows the system to achieve both measurement precision and productivity without complete resource separation
Data Source
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AI summary
There is provided a user equipment comprising at least one processor (301) and at least one memory (302) storing instructions that, when executed by the at least one processor, cause the user equipment at least to: send, to an access node, a message for requesting allocation of one or more physical uplink shared channel resources; receive, from the access node, based on the sent message, 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 send, to the access node, based on the information indicating the 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, 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.