Radio Node TEG Failure Reporting for Accurate Positioning
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Solution Overview
Problem
Current wireless communication systems lack effective failure handling mechanisms for timing error group (TEG) reports, leading to increased network signaling load and potential inaccuracies in positioning operations due to unresolved UE Tx timing errors in UL TDOA and Multi-RTT methods.
Innovation Solution
Implement signaling mechanisms for failure handling by introducing new information elements (IEs) in the UE Tx TEG association with UL-SRS and UE Rx TEG association with DL-PRS, allowing nodes to indicate failures in reporting TEG information, thereby optimizing network signaling and reducing power consumption during low-power operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE reports TEG association information to the network node, then positioning accuracy is improved by mitigating timing errors, but network signaling load increases
Solution Approach 1:
The patent changes the parameter of signaling content by introducing failure indication information elements that allow the UE to report only when TEG association fails, rather than continuously reporting TEG information. This selective reporting mechanism reduces network signaling load while maintaining positioning accuracy when needed.
Solution Approach 2:
The patent implements a feedback mechanism where the UE indicates failure conditions in TEG association reporting to the network node. This feedback approach allows the network to understand when positioning information is unavailable and adjust signaling accordingly, reducing overall signaling load while maintaining accuracy when data is available.
2Measurement precision
If the UE continuously reports TEG information, then positioning operations maintain high accuracy, but power consumption increases
Solution Approach 1:
The patent implements periodic or event-driven reporting instead of continuous reporting. The UE reports TEG association information periodically or only when failure conditions occur, reducing power consumption while maintaining positioning accuracy during active periods.
Solution Approach 2:
The failure indication feedback mechanism allows the UE to report only when necessary, reducing power consumption during normal operation while maintaining positioning accuracy when failure conditions are detected.
3Measurement precision
If the network node requests TEG information from the UE, then positioning accuracy is improved, but network complexity increases
Solution Approach 1:
The patent uses feedback mechanisms where the UE actively indicates failure conditions in TEG association reporting. This feedback approach simplifies network processing by providing clear failure indications rather than requiring complex error detection and handling procedures.
Data Source
AI summary
There is provided a method performed by a radio node. The method comprises: receiving a request, from a network node, for timing error group (TEG) information; and in response to a failure to provide the TEG information, sending a message comprising an indication of failure to report the TEG information, to the network node. There is also a method performed by a network node. The method comprises: sending a request to a radio node for timing error group (TEG) information; and receiving, from the radio node, a message comprising an indication of a failure to provide the TEG information.