UE Location Determination Via Mobile TRP Reporting in IAB Networks
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Solution Overview
Problem
In mobile IAB systems, accurately determining the location of user equipment (UE) is challenging due to the mobility of relay nodes, such as vehicles, which complicates positioning procedures and regulatory services.
Innovation Solution
A method and apparatus for UE location determination in a mobile IAB system, where devices exchange information about transmission-reception points (TRPs) and their mobility status, allowing flexible and accurate location determination by obtaining and transmitting TRP locations and mobility information among network devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mobile relay nodes are used in IAB system, then network coverage and flexibility are improved, but location determination accuracy deteriorates
Solution Approach 1:
The patent applies preliminary action by having the mobile relay node report its own location and mobility information to the network device in advance. This allows the network to pre-establish accurate location data for the relay node before it is needed for UE positioning, thereby maintaining location determination accuracy despite the mobility of relay nodes.
Solution Approach 2:
The patent implements feedback mechanisms where the mobile relay node continuously reports its location and mobility status to the network device. This feedback loop enables the network to update location information dynamically, ensuring that location determination remains accurate even as the relay node moves.
2Measurement precision
If mobile relay nodes report location information, then location determination accuracy is improved, but device complexity increases
Solution Approach 1:
The patent uses the network device as an intermediary that centralizes the location management function. The mobile relay node simply reports its location to the network device, which then handles the complexity of using this information for UE positioning. This intermediary approach simplifies the overall system architecture by separating location reporting from location processing.
3Measurement precision
If TRP mobility information is considered, then location determination accuracy is improved, but information exchange complexity increases
Solution Approach 1:
The patent applies universality by designing a standardized information exchange protocol where the same location and mobility information structure is used across all communication between mobile relay nodes and network devices. This universal format simplifies information exchange by eliminating the need for complex, scenario-specific data formats.
Data Source
AI summary
Example embodiments relate to methods, devices, apparatuses and computer readable storage media for user equipment (UE) location determination in a mobile Integrated Access and Backhaul (IAB) system. A first device receives, from a second device in the radio access network, a first request for information associated with a transmission-reception point associated with the first device. The second device receives from a third device a second request for information associated with the transmission-reception point associated with the first device, and as a response, transmits the first request to the first device. The first device obtains a location of the transmission-reception point and corresponding mobility information. The first device transmits, to the second device, information indicative of the location of the transmission-reception point and/or the corresponding mobility information. The second device transmits, to the third device, the information indicative of the location of the transmission-reception point and/or the corresponding mobility information.