SRS Configuration Updating for Reliable Low-Power Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In low power and high accuracy positioning systems, the uplink sounding reference signal (SRS) configuration can become invalid when user equipment moves out of its valid area, preventing effective positioning.
Innovation Solution
The terminal initiates a radio resource control (RRC) connection resumption procedure and a random access channel (RACH) procedure to obtain a valid second target configuration, ensuring timely updates to the SRS configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the terminal uses a first target configuration for positioning, then positioning can be performed with lower power consumption, but the configuration becomes invalid when the terminal moves out of the valid area
Solution Approach 1:
The patent implements dynamic configuration validation by introducing a validity area concept and checking whether the terminal remains within this area. When the terminal moves out of the valid area, the configuration is automatically updated through RRC connection resumption and RACH procedures, making the system adaptive to terminal movement while maintaining low power consumption when stationary.
2Reliability
If the terminal initiates RRC connection resumption and RACH procedures to update configuration, then a valid second target configuration is obtained, but signaling overhead and procedure complexity increase
Solution Approach 1:
The patent performs preliminary actions by establishing validity areas and pre-configuring update triggers before the terminal actually moves. The validity area is defined in advance, and when the terminal crosses the boundary, the update procedure is automatically triggered, reducing the need for continuous monitoring and complex real-time decision-making.
3Reliability
If the terminal continuously monitors configuration validity, then configuration updates can be performed timely, but power consumption increases
Solution Approach 1:
Instead of continuous monitoring, the patent implements periodic validation by checking configuration validity at specific events such as when the terminal enters or exits the validity area. The update is triggered periodically based on location events rather than continuous monitoring, significantly reducing power consumption while maintaining timely updates.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
This application discloses a configuration updating method, a configuration updating apparatus, a terminal, and a network-side device, pertaining to the field of communications technologies. The configuration updating method of embodiments of this application includes: initiating, by a terminal, when a first target configuration is invalid, a radio resource control RRC connection resumption procedure and a corresponding random access channel RACH procedure toward a first network-side device; and obtaining, by the terminal, a valid second target configuration based on the RRC connection resumption procedure and the RACH procedure.