Radio frequency fingerprint database update methods, devices, equipment and media

Abstract

This disclosure provides a method for updating a radio frequency (RF) fingerprint database. The historical fingerprint data in the RF fingerprint database includes cluster information and sub-cluster information. The method includes: acquiring real-time fingerprint data and dividing the real-time fingerprint data into different types of datasets based on the cluster information, where each dataset includes at least a boundary dataset; updating the RF fingerprint database according to each type of dataset; wherein, for first fingerprint data in the boundary dataset, determining the first sub-cluster closest to the location of the first fingerprint data based on the sub-cluster information, and updating the sub-cluster information of the historical first fingerprint data in the RF fingerprint database based on the information of the first sub-cluster. Embodiments of this disclosure can perform sub-cluster boundary movement optimization processing on fingerprint data at sub-cluster boundaries that are prone to misjudgment, improving the reliability of fingerprint data in the RF fingerprint database, thereby improving the indoor positioning accuracy of the terminal. This disclosure also provides an RF fingerprint database updating apparatus, a computer device, and a readable medium.

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