Beam Reporting for SRS and PRS Using TOA Prioritization
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Solution Overview
Problem
Existing wireless communication systems lack efficient methods for beam reporting of non-communication signals such as sensing reference signals (SRSs) and positioning reference signals (PRSs), which are crucial for RF sensing and positioning, as current CSI frameworks do not adequately support these signals.
Innovation Solution
Enhanced beam reporting techniques for non-communication signals involve a user equipment (UE) receiving and prioritizing reference signals based on time of arrival (TOA) parameter values, performing channel measurements, and transmitting reports to a network node, including TOA parameter values and other measurements like RSRP, SINR, and CQI, with specific configurations for these signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing CSI frameworks are used for beam reporting of non-communication signals, then the system maintains compatibility with current wireless communication standards, but the accuracy and efficiency of RF sensing and positioning deteriorate due to inadequate support for SRSs and PRSs
Solution Approach 1:
The patent extends the existing CSI framework to handle both communication signals and non-communication signals (SRSs and PRSs) using a unified beam reporting mechanism. The UE prioritizes reference signals based on TOA parameters and includes both communication and sensing/positioning reference signals in the same CSI report, enabling the system to serve multiple functions through a single adapted framework.
2Productivity
If beam reporting is enhanced for non-communication signals with TOA parameter prioritization, then the efficiency of RF sensing and positioning improves, but the complexity of the reporting mechanism increases
Solution Approach 1:
The UE performs preliminary prioritization of reference signals based on TOA parameters before generating the CSI report. By pre-ranking the reference signals according to their TOA values, the system efficiently identifies the most relevant signals for sensing and positioning without adding complex processing during the reporting phase, thus improving efficiency while managing complexity.
Solution Approach 2:
The patent segments the beam reporting process into distinct stages: receiving multiple reference signals, prioritizing them based on TOA parameters, performing channel measurements, and generating the prioritized CSI report. This segmentation allows each stage to be optimized independently, improving overall efficiency while keeping individual processing steps manageable.
3Measurement precision
If multiple reference signals are measured and reported with prioritization, then the channel state information accuracy improves, but the reporting overhead and processing time increase
Solution Approach 1:
Instead of measuring and reporting all received reference signals equally, the UE applies partial action by selecting and prioritizing only the most relevant reference signals based on TOA parameters. This approach captures the essential channel state information needed for accurate sensing and positioning while avoiding the time overhead of processing every single reference signal, thus achieving a balance between measurement precision and processing time.
Data Source
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AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a network node, such as a base station or another UE, one or more reference signals. The reference signals may be examples of sensing reference signals (SRSs) or positioning reference signals (PRSs). The UE may identify a time of arrival (TOA) parameter value associated with each of the one or more references signals, and the UE may prioritize each of the one or more reference signals based on the TOA parameter value associated with each of the one or more reference signals. In some cases, the UE may perform a channel measurement procedure, and may transmit a report including the results of the measurement, to the network node. The report may include TOA parameter values associated with each of the one or more reference signals received from the network node.