Carrier Selection for Positioning in Carrier Aggregation
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Solution Overview
Problem
Current positioning measurement technologies in LTE systems are inadequate for scenarios with multiple carriers, as they do not account for carrier aggregation, leading to a lack of appropriate solutions for terminal positioning in such environments.
Innovation Solution
A carrier selection method that involves obtaining information about carriers supported by each base station and terminal, selecting the optimal carrier based on quality information, and performing positioning measurements using the selected carrier to improve measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple carriers are used for service in a cell (carrier aggregation), then service capacity and data rate are improved, but positioning measurement capability deteriorates because prior art does not support multiple carriers
Solution Approach 1:
The patent segments the carrier selection process into distinct phases: obtaining carrier information from base stations and terminals, evaluating carrier quality metrics, and selecting optimal carriers for positioning measurements. This segmentation allows the system to handle multiple carriers systematically, resolving the contradiction by enabling positioning functionality to work effectively with carrier aggregation through structured carrier management
Solution Approach 2:
The patent changes the parameter of carrier selection from a single fixed carrier to multiple selectable carriers based on quality parameters. By introducing quality evaluation metrics and dynamic selection mechanisms, the system adapts to carrier aggregation scenarios while maintaining positioning measurement capability, thus resolving the contradiction between improved service capacity and preserved measurement precision
2Ease of operation
If prior art positioning methods are applied in carrier aggregation scenarios, then implementation simplicity is maintained, but positioning accuracy deteriorates due to lack of multi-carrier support
Solution Approach 1:
The patent creates a universal positioning measurement solution that works across both single-carrier and multi-carrier scenarios. By designing a carrier selection mechanism that can adapt to different carrier configurations, the system maintains ease of operation through a unified approach while achieving high positioning accuracy in carrier aggregation environments, resolving the contradiction between implementation simplicity and positioning accuracy
3Measurement precision
If optimal carrier selection is implemented, then positioning measurement accuracy is improved, but system complexity increases due to additional information processing
Solution Approach 1:
The patent applies preliminary action by pre-obtaining and evaluating carrier information before positioning measurements are performed. The system collects carrier quality metrics in advance, evaluates multiple carriers, and selects optimal carriers beforehand, which simplifies the actual measurement process while maintaining high accuracy. This preliminary processing resolves the contradiction by organizing complexity in a structured manner that pays off in measurement accuracy
Data Source
AI summary
The present invention provides a carrier selection method for positioning measurement, which is applied to positioning measurement in a carrier aggregation scenario. The method includes: obtaining information about carriers supported by each base station participating in positioning; obtaining carriers supported by a terminal and quality information of each carrier; and selecting an optimal carrier supported by each base station from the carriers supported by the terminal, so that the terminal performs positioning measurement according to the optimal carrier. The present invention also provides a positioning measurement method, a positioning processing apparatus, and a terminal. By using the above solution, positioning measurement of terminal is implemented in a carrier aggregation scenario. Moreover, because an optimal carrier of each base station is selected for the terminal to perform positioning measurement, the accuracy of positioning measurement is improved, and thereby the accuracy of positioning is improved.