PRS Measurement Reporting with Refined L1/L2 Positioning Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems, particularly in 5G, face challenges in efficiently managing beam management and positioning reference signals (PRS) for user equipment (UE) to support large wireless sensor deployments and enhance spectral efficiency while reducing latency.
Innovation Solution
The implementation of enhanced beam management reporting through L1-RSRP reporting of non-serving cells and QCL-info updates, along with PRS occasion measurements across multiple frequencies, to facilitate accurate positioning and resource allocation in 5G networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning measurement data is reported via RRC signaling, then the data can be transmitted with higher reliability and accuracy, but the signaling overhead and network resource consumption increase significantly
Solution Approach 1:
The patent introduces a positioning measurement container as an intermediary data structure that encapsulates positioning measurement information. This container can be carried within existing RRC messages (such as ULInformationTransfer or DLInformationTransfer), allowing positioning data to be transmitted without requiring dedicated signaling resources or increasing overall signaling overhead. The container acts as a mediator between the positioning measurement function and the existing RRC signaling framework.
Solution Approach 2:
The patent enables existing RRC signaling messages to serve multiple functions by allowing them to carry both traditional RRC information and positioning measurement data within the same message structure. For example, ULInformationTransfer can simultaneously convey uplink information transfer indications and positioning measurement container data, thereby eliminating the need for separate dedicated positioning signaling messages and reducing overall signaling overhead.
2Measurement precision
If positioning measurement data is reported frequently to improve positioning accuracy, then the positioning precision improves, but the network resource consumption and energy usage increase
Solution Approach 1:
The patent implements dynamic reporting mechanisms where the frequency and timing of positioning measurement data reports are adjusted based on current positioning requirements, channel conditions, and resource availability. The network can dynamically configure reporting intervals and trigger conditions, allowing the system to increase reporting frequency when high positioning accuracy is needed while reducing frequency during normal operation to conserve energy and resources.
Solution Approach 2:
The patent allows dynamic modification of reporting parameters such as reporting period, threshold values, and trigger conditions based on network state and positioning service requirements. By changing these parameters adaptively, the system can optimize the balance between positioning accuracy and energy consumption, reporting frequently only when necessary and using less frequent reporting during stable conditions.
3Ease of operation
If existing RRC messages are used to carry positioning data, then the device complexity is reduced and ease of operation improves, but the positioning data may be lost if the message is discarded during random access procedures
Solution Approach 1:
The patent segments the positioning measurement data into a separate container structure that can be independently handled and protected. This container can be included in RRC messages during connected state, and the patent provides mechanisms to ensure its integrity and delivery. The segmentation allows the positioning data to be treated as a distinct entity with its own protection and recovery mechanisms, separate from the main RRC message content.
Solution Approach 2:
The patent implements protection mechanisms that are prepared in advance to prevent positioning data loss during random access procedures. This includes configuring the network to recognize and protect positioning measurement containers during transition states, and establishing fallback mechanisms beforehand to ensure data delivery even if initial messages are discarded during random access.
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
Disclosed are techniques for wireless communication. In an aspect, a UE obtains measurement data associated with at least one PRS. The UE transmits, to a BS in a first L1 or L2 PSI report opportunity, a first PSI report indicative of a first set of measurement values associated with the at least one PRS based on the measurement data. The UE further transmits, to the BS in a second L1 or L2 PSI report opportunity that is subsequent to the first L1 or L2 PSI report opportunity, a second PSI report that is indicative of a second set of measurement values associated with the at least one PRS based on the measurement data, the second set of measurement values being refined from the first set of measurement values.