Carrier Aggregation Positioning With Combined CAE Compensation
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Solution Overview
Problem
Existing mobile communication networks face challenges in achieving accurate positioning due to timing errors associated with UE and gNB transmit/receive delays, which current frameworks like TEG standardization fail to fully mitigate.
Innovation Solution
A method to determine and mitigate combined carrier aggregation errors (CAE) by measuring and combining positioning reference signals and sounding reference signals across multiple component carriers, allowing for enhanced positioning accuracy by compensating for transmit, receive, and processing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If TEG standardization framework is used to identify error ranges, then positioning accuracy indication is provided, but actual timing errors are not fully mitigated
Solution Approach 1:
The patent implements feedback mechanisms where the network node receives measurement results from the apparatus including combined CAE values, and uses this feedback to determine positioning information with appropriate error compensation. The measurement results are fed back to improve the positioning accuracy continuously.
Solution Approach 2:
The patent introduces an intermediary measurement framework that combines CAE from multiple component carriers as an intermediate step between raw timing measurements and final positioning determination. This intermediary combined CAE measurement helps bridge the gap between individual carrier errors and overall positioning accuracy.
2Measurement precision
If carrier aggregation is used to enhance positioning, then more component carriers are processed, but combined CAE from multiple CCs introduces additional errors
Solution Approach 1:
The patent merges CAE measurements from multiple component carriers into a single combined CAE value that represents the total error. By combining the error measurements rather than treating them separately, the system can apply unified compensation strategies across all aggregated carriers.
Solution Approach 2:
The patent changes the parameter representation from individual per-carrier CAE values to a combined CAE parameter that aggregates errors across multiple carriers. This parameter transformation simplifies the complexity by providing a single comprehensive error metric for positioning calculations.
3Reliability
If comprehensive CAE measurement is implemented across multiple CCs, then total combined CAE is determined, but measurement and processing complexity increases
Solution Approach 1:
The patent segments the CAE measurement process into distinct components: individual CAE measurement per component carrier, combination of individual CAE values, and final positioning determination. This segmentation allows each step to be optimized independently while maintaining overall measurement accuracy.
Data Source
AI summary
Inter-alia, a method is disclosed comprising: obtaining a request for measuring at least a combined carrier aggregation error, CAE of one or more component carriers, CCs, configured for the apparatus in a mobile communication network, wherein the combined CAE is indicative of a total of one or more errors resulting from at least one of a transmit error, receive error, or a processing of the one or more CCs; obtaining, based on the request, at least one of one or more positioning reference signals, PRSs, or one or more sounding reference signals, SRSs, of the one or more CCs; determining, based, at least in part, on at least one of the obtained one or more PRSs, or the one or more SRSs, the combined CAE; and providing the determined combined CAE. It is further disclosed an according apparatus, computer program and system.