On-Demand PRS Activation Without Base Station Feedback
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Solution Overview
Problem
In the NR system, the existing PRS configuration methods lead to unnecessary signaling overhead and inefficiencies due to the need for feedback from each base station or TRP after a terminal device initiates an on-demand PRS request, which affects communication performance.
Innovation Solution
The LMF entity activates PRS configuration information without waiting for feedback from each base station or TRP, optimizing the communication system by reducing unnecessary signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the LMF entity waits for PRS configuration update feedback from each base station or TRP after a terminal device initiates an on-demand PRS request, then the PRS configuration can be confirmed and activated reliably, but unnecessary signaling overhead is generated and communication efficiency is reduced
Solution Approach 1:
The patent extracts the feedback confirmation step from the PRS configuration process. The LMF entity activates PRS configuration information without waiting for feedback from each base station or TRP, thereby removing the redundant feedback signaling while maintaining configuration reliability through direct activation commands.
Solution Approach 2:
The base stations and TRPs autonomously apply the PRS configuration information received from the LMF entity without requiring explicit confirmation feedback. Each network device self-services the configuration activation, eliminating the need for individual feedback messages while ensuring proper configuration application.
2Measurement precision
If the LMF entity waits for PRS configuration update feedback from each base station or TRP, then configuration accuracy can be verified, but the positioning response time and system efficiency are reduced
Solution Approach 1:
The LMF entity performs preliminary configuration preparation by determining the PRS configuration information in advance based on terminal positioning requirements. The configuration is then activated directly without waiting for feedback, achieving both accuracy through careful pre-planning and speed through immediate activation.
Solution Approach 2:
The patent skips the feedback waiting step in the PRS configuration process. The LMF entity rushes through the configuration activation by sending commands directly to base stations and TRPs without pausing for confirmation, thereby reducing positioning response time while maintaining configuration accuracy through proper command formulation.
3Loss of information
If feedback signaling is implemented from each base station or TRP to the LMF entity and terminal device, then configuration status can be monitored, but device complexity and signaling processing burden increase
Solution Approach 1:
The patent merges the configuration status monitoring function into the existing PRS configuration signaling flow. Instead of adding separate feedback messages from each base station and TRP, the status information is integrated into the configuration activation commands and terminal responses, reducing signaling complexity while maintaining status visibility.
Data Source
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AI summary
Embodiments of the present application provide a wireless communication method and a device. After a terminal device or an LMF entity initiates an on-demand PRS request, the LMF entity may activate corresponding PRS configuration information without waiting for a PRS configuration update feedback sent by each base station or TRP, thereby avoiding unnecessary signaling overhead between the terminal device, the LMF entity, the base station or the TRP, and optimizing performance of a communication system. The wireless communication method comprises: the LMF entity sends first information to at least one access network device, the first information being used for indicating activation of target PRS configuration information.