Mobility-Managed Positioning Measurement During Network Handover
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Solution Overview
Problem
In communication networks, positioning measurement on a terminal device often fails when it moves across base stations due to conflicts with handover processes, leading to incomplete or failed positioning procedures.
Innovation Solution
A method involving mobility management network elements that send messages to suspend and resume positioning measurements on terminal devices during handovers, using positioning contexts and instructions to manage the handover process effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning measurement is performed continuously on a terminal device, then positioning accuracy is maintained, but positioning measurement fails when the terminal device moves across base stations during handover
Solution Approach 1:
The mobility management network element performs preliminary actions by sending a first message to suspend positioning measurement before the handover is completed, and sends a second message to resume positioning measurement after handover is completed. This preliminary suspension and resumption of positioning measurement prevents measurement failures during the critical handover period while maintaining positioning accuracy before and after handover.
2Reliability
If positioning measurement is suspended during handover, then positioning measurement success rate is improved, but positioning accuracy may be degraded due to interruption
Solution Approach 1:
The system implements periodic action by suspending positioning measurement during the handover interval and resuming it after handover completion. The mobility management network element coordinates the suspension and resumption timing to match the handover process, ensuring positioning measurement is performed in stable states (before and after handover) while avoiding the unstable handover transition period.
3Reliability
If the mobility management network element coordinates positioning measurement with handover process, then positioning measurement success rate is improved, but system complexity increases
Solution Approach 1:
The mobility management network element performs multiple functions by integrating both handover management and positioning measurement coordination capabilities. It sends the first message to suspend positioning measurement and the second message to resume positioning measurement, effectively managing both handover and positioning processes within a single network element, thereby reducing overall system complexity.
Data Source
AI summary
A positioning method, applied to a mobility management network element, includes when learning that a terminal device needs to be handed over from a first access network device to a second access network device, sending a first message to a location management network element, where the first message indicates to suspend positioning measurement on the terminal device, and when learning that the terminal device has been handed over to the second access network device, sending a second message to the location management network element, where the second message enables the location management network element to send a first positioning request, and the first positioning request requests to perform positioning measurement on the terminal device.