Positioning Measurement Request Path Count Control
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Solution Overview
Problem
Current positioning protocols in cellular communications systems, such as NRPPa, do not allow the Location Management Function (LMF) to specify the exact number of paths to be reported by the gNB for uplink measurements, leading to potential over-reporting and inefficiencies.
Innovation Solution
The proposed solution involves modifying the measurement request message to include an option for the LMF to specify the desired number of reported path measurements, allowing the gNB to report only the necessary paths, thereby improving interface usage and reducing unnecessary data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gNB reports all detected paths without LMF specification, then the positioning measurement completeness is improved, but the interface usage efficiency deteriorates due to over-reporting
Solution Approach 1:
The LMF specifies the desired number of paths to be reported in advance within the measurement request message, allowing the gNB to prepare and report only the required number of paths, thus avoiding over-reporting and improving interface efficiency
Solution Approach 2:
The measurement request message is modified to include a new parameter indicating the desired number of reported paths, enabling dynamic control of reporting quantity based on positioning requirements
2Measurement precision
If the gNB reports all detected paths, then the positioning accuracy is improved, but the network load increases due to unnecessary data transmission
Solution Approach 1:
The unnecessary path measurement data is extracted and removed from the reporting process by specifying only the required number of paths, reducing network load while maintaining positioning accuracy through selective reporting of the most relevant paths
3Adaptability or versatility
If the LMF requests more path measurements than needed, then the positioning measurement coverage is improved, but the system complexity increases due to processing unnecessary data
Solution Approach 1:
The LMF specifies a desired number of paths that may be more than the minimum required but less than all detected paths, providing a balanced approach that ensures sufficient measurement coverage while avoiding the complexity of processing all possible paths
Data Source
AI summary
Systems and methods are disclosed for sending, receiving, and processing a positioning measurement request including a number of paths in a cellular communications system. In one embodiment, a method performed by a base station for exchange of messages related to a location of a User Equipment (UE) with a Location Management Function (LMF) comprises receiving a measurement request from the LMF, the measurement request comprising information that indicates a desired number of reported path measurements between the base station and the UE. The method further comprises performing measurements on paths between the base station and the UE, generating a measurement response message comprising results of the measurements for the desired number of reported path measurements, and transmitting the measurement response message to the LMF.