name: GPS
full_form: Global Positioning System
context: In order to perform A-GPS test, an Upper Tester is defined to have two basic functional unites: - Satellite simulator generating and broadcasting satellite signals; - Assistance data source storing the data simulating a number of pre-defined GPS test scenarios. Under the TTCN command, the upper tester loads a pre-defined or re-loads another pre-defined GPS test scenario to the satellite simulator. The generated satellite signals shall simulate a sufficient number satellites. The signal shall be sufficiently strong, in order to enable the UE to do the positioning measurement. The SS also sends the GPS assistance data to the UE through RRC signalling to facilitate the UE acquiring and tracking satellites. Such assistance data shall be consistent to within 2 seconds with the satellite signals generated. The assistance data source shall provide the assistance data consistent to +1/-0 second with the GPS test scenario currently running in the satellite simulator (i.e. the data shall be up
description: Global Positioning System (GPS) is a network of satellites orbiting the Earth that provide locations of GPS receivers on the ground. It's used for navigation and positioning purposes.
explanation: The context describes GPS as a system of satellites providing location data, clearly classifying it as a technological infrastructure.
section_title: 7.3.5.1Upper tester
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