Abstract: A desktop spatial stereoscopic interaction system includes: a stereoscopic interaction device for tracking a visual observation point of the operator through an infrared coordinate component, so as to obtain an operation instruction for an interactive control device, as well as display a virtual stereoscopic content corresponding to the visual observation point; the infrared coordinate component for acquiring first and second spatial coordinate data and transmitting the first and second spatial coordinate data to the stereoscopic interaction device; a visual aid device for acquiring the virtual stereoscopic content from the stereoscopic interaction device; and the interactive control device for outputting the operation instruction to the stereoscopic interaction device.

Abstract: A method for positioning in a communication network with a cellular coverage is disclosed, wherein comprising the following steps: receiving location-dependent data concerning a mobile device; from a plurality of fingerprints, each of which corresponds to one of locations within the coverage, retrieving one having the highest similarity to the location-dependent data; and determining the location corresponding to the fingerprint with the highest similarity as the mobile device's location if the highest similarity exceeds a predetermined threshold.

Abstract: The present invention relates to a method and a positioning server in a radio access network for collecting radio fingerprint positioning data records from different nodes. The data records comprise geographical positions and radio network communication parameters and are stored and grouped in clusters in the positioning server. A geometrical shape representing a geographical area based on the network communication parameters in the collected positioning data records in the cluster is computed. When a notification about changed network configuration parameters for a radio cell is received, known positioning servers simply erase all positioning data records related to that radio cell. This results in the unavailability of still valid positioning data. The present invention overcomes this problem by selectively erase positioning data records in the positioning server only when the configuration parameters have changed beyond a predefined value range.

Abstract: The present invention relates to a method and a positioning server in a radio access network for collecting radio fingerprint positioning data records from different nodes. The data records comprise geographical positions and radio network communication parameters and are stored and grouped in clusters in the positioning server. A geometrical shape representing a geographical area based on the network communication parameters in the collected positioning data records in the cluster is computed. When a notification about changed network configuration parameters for a radio cell is received, known positioning servers simply erase all positioning data records related to that radio cell. This results in the unavailability of still valid positioning data. The present invention overcomes this problem by selectively erase positioning data records in the positioning server only when the configuration parameters have changed beyond a predefined value range.

Abstract: A method for positioning in a communication network with a cellular coverage is disclosed, wherein comprising the following steps: receiving location-dependent data concerning a mobile device; from a plurality of fingerprints, each of which corresponds to one of locations within the coverage, retrieving one having the highest similarity to the location-dependent data; and determining the location corresponding to the fingerprint with the highest similarity as the mobile device's location if the highest similarity exceeds a predetermined threshold.