IAB Node-Based UE Positioning for Accurate Location Reporting
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Solution Overview
Problem
In IAB networks, existing location reporting processes for user equipment (UE) often result in inaccuracies, as the reported position deviates from the UE's actual location, especially when IAB nodes are deployed in fixed or movable locations, leading to inefficient positioning and increased power consumption.
Innovation Solution
A method and apparatus for UE positioning based on integrated access and backhaul (IAB) that determines UE location using the identification of a fixed or movable IAB node, mapping its coverage range to a fixed area, and utilizing configuration lists to accurately determine UE location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing location reporting process is used for UE positioning through IAB site, then positioning can be performed, but the reported position deviates from UE's actual location
Solution Approach 1:
The patent introduces an intermediary mapping mechanism between IAB node identification and geographic location. Instead of directly reporting UE location through potentially inaccurate existing processes, the system uses the IAB node's known fixed location as an intermediary reference point. The AMF network element maps the IAB node identification to its predetermined location coordinates, thereby obtaining accurate UE position information without direct UE-to-network location measurement.
2Adaptability or versatility
If IAB nodes are deployed in dense scenarios without wired transmission networks, then deployment flexibility is improved, but positioning accuracy deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-configuring the correspondence relationship between IAB node identifications and their geographic locations before actual deployment. The AMF network element stores predetermined location information for each IAB node in advance. When positioning is needed, the system simply retrieves the pre-stored location data corresponding to the IAB node identification, eliminating the need for complex real-time location measurements and maintaining accuracy regardless of deployment density.
3Measurement precision
If complex communication processes are used for UE positioning, then positioning accuracy can be maintained, but power consumption increases
Solution Approach 1:
The patent extracts the location determination function from the UE device itself and transfers it to the network side (AMF network element). Instead of requiring the UE to participate in complex communication processes for location determination, the system extracts only the IAB node identification from the UE's connection information and uses the network's pre-stored location data to determine position. This extraction approach maintains positioning accuracy while minimizing UE power consumption.
Data Source
AI summary
A user equipment (UE) positioning method based on integrated access and backhaul (IAB). In the solution, location information of a UE to be located is determined according to information of an IAB node that establishes a connection with the UE.