Positioning Measurement Calibration Indicator Reporting
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Solution Overview
Problem
Current 5G wireless systems face challenges in accurately calibrating positioning measurements due to timing errors associated with transmit (Tx) and receive (Rx) timing error groups (TEGs), which affect the accuracy of positioning methods like DL-TDOA, UL-TDOA, and Multi-RTT.
Innovation Solution
The proposed solution involves an apparatus with a processor and transceiver configured to obtain calibration information for positioning measurements. This apparatus transmits positioning measurements and calibration information to a network node, indicating whether the measurements were calibrated. The calibration information includes an indication of whether the positioning measurement was calibrated, allowing for determination of whether additional calibration is needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning measurements are performed in 5G wireless systems, then positioning capability is provided, but timing errors from Tx and Rx TEGs reduce measurement accuracy
Solution Approach 1:
The patent implements a feedback mechanism where the user equipment reports calibration information (indicating whether calibration was performed and the type of calibration) to the network node. The network node uses this feedback to determine whether to apply calibration corrections to the positioning measurements, thereby resolving the timing errors systematically.
Solution Approach 2:
The patent applies preliminary calibration actions before positioning measurements are taken. The user equipment performs calibration (e.g., using known reference points or signals) and reports the calibration status to the network node, which then uses this pre-applied calibration information to correct timing errors in the subsequent positioning measurements.
2Measurement precision
If calibration information is reported for each positioning measurement, then measurement accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent applies local quality by differentiating the calibration information reporting based on the specific calibration type. Instead of uniformly reporting calibration status for all measurements, the system reports calibration information selectively - for example, reporting when calibration is needed versus when it has already been applied, thereby reducing unnecessary signaling overhead while maintaining accuracy where required.
3Measurement precision
If calibration is performed for all positioning measurements, then measurement accuracy is improved, but processing time and complexity increase
Solution Approach 1:
The patent applies partial action by performing calibration only when necessary rather than for all measurements. The user equipment and network node determine based on calibration information whether calibration corrections need to be applied to each positioning measurement, avoiding unnecessary calibration processing and reducing overall time consumption while maintaining accuracy where needed.
Data Source
AI summary
Systems, methods, apparatuses, and computer program products for positioning measurement calibration are provided. One method may include obtaining calibration information of a positioning measurement, and transmitting the positioning measurement and the calibration information to a network node. The calibration information may include an indication of whether the positioning measurement is calibrated.