Mobile Terminal AGNSS Positioning with Neighboring Cell Data
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Solution Overview
Problem
In AGNSS positioning, incomplete base station information databases lead to failures in mobile terminal positioning, particularly in new mobile communications networks where base station data construction lags behind network expansion, resulting in reduced positioning success probability and robustness.
Innovation Solution
A mobile terminal obtains base station information from neighboring cells when the serving cell's information is unavailable, using this data to acquire AGNSS assistant data from an AGNSS server, thereby enhancing positioning success probability and robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the mobile terminal uses base station information of the serving cell for AGNSS positioning, then the positioning process is simple, but the positioning fails when the base station information database is incomplete
Solution Approach 1:
The mobile terminal preliminarily obtains base station information of neighboring cells before AGNSS positioning is needed. When the serving cell information is unavailable, this pre-obtained neighboring cell information can be immediately used to query the base station information database and obtain AGNSS assistant data, ensuring positioning success without adding complex real-time processing steps
Solution Approach 2:
The base station information of neighboring cells acts as an intermediary when the serving cell information is unavailable. Instead of directly failing when serving cell data is missing, the system uses neighboring cell information as a substitute key to query the database and obtain positioning assistance data, thereby maintaining positioning reliability
2Ease of operation
If the mobile terminal only uses serving cell base station information, then the data processing is straightforward, but the AGNSS positioning fails when the base station information database is incomplete
Solution Approach 1:
The mobile terminal preliminarily obtains base station information of neighboring cells before AGNSS positioning is needed. When the serving cell information is unavailable, this pre-obtained neighboring cell information can be immediately used to query the base station information database and obtain AGNSS assistant data, ensuring positioning success without adding complex real-time processing steps
Solution Approach 2:
The system changes the parameter used for database querying from solely serving cell base station information to include neighboring cell base station information as an alternative. This parameter substitution allows the system to adapt when the original parameter (serving cell info) is unavailable, thereby improving positioning success probability while maintaining processing simplicity
Data Source
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AI summary
Embodiments of the present invention disclose a positioning method, so as to increase an AGNSS positioning success probability and enhance AGNSS robustness. The method includes: when a preset condition is satisfied, obtaining, by a mobile terminal, base station information of neighboring cells of a serving cell in which the mobile terminal is currently located; obtaining, by the mobile terminal, AGNSS assistant data according to the base station information of the neighboring cells, and performing, by the mobile terminal, positioning according to the AGNSS assistant data.