MDT Location Reporting Synchronization for UE Selection
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Solution Overview
Problem
The RAN node is not aware of which UEs are using UE-based positioning information, leading to incorrect UE selection for management-based Minimizing Drive Test (MDT) configuration, and there is a lack of synchronization between the periodicity of assistance information provided by the RAN and the frequency of UE-based positioning measurements.
Innovation Solution
The serving node is notified about UE identities configured for UE-based positioning, and UE-based MDT or management reporting measurements are logged with periodicity matching the location information determination, allowing the RAN to select UEs with available location information and adjust logging intervals accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the RAN node performs management-based MDT configuration without knowing which UEs are using UE-based positioning, then the MDT configuration can be performed, but the UE selection becomes incorrect and location information availability cannot be ensured
Solution Approach 1:
The patent implements a feedback mechanism where the RAN node requests assistance information from the AMF about which UEs are configured for UE-based positioning. This feedback loop enables the RAN node to accurately identify UEs with location information capability and select them appropriately for management-based MDT configuration, resolving the contradiction between performing MDT configuration and ensuring correct UE selection with available location information.
2Productivity
If the RAN node provides assistance information periodically without synchronization to UE positioning frequency, then assistance information can be provided, but the periodicity does not match the UE-based positioning measurement frequency
Solution Approach 1:
The patent introduces dynamic adjustment of the assistance information periodicity based on the UE's positioning measurement frequency. The RAN node determines the positioning periodicity from UE capability information and adjusts the assistance information provisioning accordingly. This dynamic synchronization ensures that assistance information is provided at the optimal frequency to support accurate UE-based positioning measurements while maintaining efficient information provision.
Data Source
AI summary
A method of operating a wireless communication device of a radio communication network includes obtaining information identifying at least one of: 1) how often the wireless communication device requests assistance data be provided by a network node of the radio communication network for positioning by the wireless communication device; and 2) how often the wireless communication device performs positioning. The method can further include sending a request for assistance data containing the information toward the network node. Another method of operating a serving node that communicates with wireless communication devices and a network node of a radio communication network, includes requesting the network node to provide assistance information that identifies wireless communication devices that are configured to use assistance data from the network node for positioning and/or identifies wireless communication devices that have requested assistance data from the network node for positioning.