Positioning Method Synchronizing PRS Timing for NR Terminals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current positioning methods in NR systems face poor performance due to asynchronicity between non-serving and serving cells, affecting the accuracy of positioning measurements in terminals.
Innovation Solution
A method and apparatus that involve a network device initiating a positioning procedure by sending target indication information, MG configuration, and PRS processing window configuration to terminals, allowing them to measure PRSs effectively, even if the non-serving cell does not meet the PRS measurement condition, by using an active BWP and ignoring measurements that do not meet the condition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminals measure PRS from non-serving cells in asynchronous NR systems, then positioning coverage is improved, but positioning accuracy deteriorates due to asynchronicity between cells
Solution Approach 1:
The patent changes the timing parameters of the non-serving cell to be synchronized with the serving cell. Specifically, the network device adjusts the PRS transmission timing of non-serving cells so that their PRS resources align with the serving cell's PRS resources, enabling terminals to perform accurate measurements despite previously being asynchronous
Solution Approach 2:
The patent creates equipotential timing conditions across all cells by synchronizing their PRS transmission. All cells transmit PRS at the same time instances, eliminating the timing difference that caused measurement inaccuracies and allowing terminals to measure all cells under equal timing conditions
2Adaptability or versatility
If terminals perform PRS measurement on non-serving cells, then positioning functionality is enhanced, but measurement reliability deteriorates due to asynchronicity
Solution Approach 1:
The network device modifies the timing parameters of non-serving cells to achieve synchronization with the serving cell. This ensures that PRS resources from all cells are available at predictable, aligned time instances, making measurements reliable and consistent
Solution Approach 2:
The patent implements a feedback mechanism where the network device receives measurement results from terminals and uses this information to further optimize and maintain synchronization of PRS transmission timing across cells, continuously improving measurement reliability
3Adaptability or versatility
If PRS resources are allocated for non-serving cells, then positioning capability is improved, but resource conflict increases due to asynchronicity
Solution Approach 1:
The patent creates equipotential timing conditions across all cells by synchronizing their PRS transmission. All cells transmit PRS at the same time instances, eliminating the timing difference that caused measurement inaccuracies and allowing terminals to measure all cells under equal timing conditions
Solution Approach 2:
The patent designs PRS resources with universal timing characteristics that work across all cells simultaneously. By making PRS transmission time-aligned, the same resource allocation pattern can be universally applied to serving and non-serving cells without causing conflicts
Data Source
AI summary
A positioning method and apparatus, and a related device are provided. The method includes: obtaining first target information by a first network device, and initiating a positioning procedure based on the first target information by the first network device. The positioning procedure includes at least one of the following: sending at least one of a Measurement Gap (MG) configuration or MG activation information to a second network device or a terminal; sending a Positioning Reference Signal (PRS) processing window configuration to the second network device or the terminal; or sending target indication information to the second network device or the terminal. The target indication information indicates information related to PRS measurement of the terminal.