name: GNSS
full_form: Global Navigation Satellite System
context: Reference Time assistance provides the GNSS receiver with coarse or fine GNSS time information. The specific GNSS system times (e.g., GPS, Galileo, GLONASS, BDS system time) shall be indicated with a GNSS ID. In case of coarse time assistance only, the Reference Time provides an estimate of the current GNSS system time (where the specific GNSS is indicated by a GNSS ID). The E-SMLC should achieve an accuracy of +/- 3 seconds for this time including allowing for the transmission delay between E-SMLC and UE. In case of fine time assistance, the Reference Time provides the relation between GNSS system time (where the specific GNSS is indicated by a GNSS ID) and E-UTRAN air-interface timing.
description: The Global Navigation Satellite System (GNSS) refers to a constellation of satellites providing location information and timing signals to GNSS receivers on the ground. In the context of 3GPP specifications, GNSS is utilized for reference time assistance, enabling synchronization between the UE and the network. The specific GNSS system times, such as GPS, Galileo, GLONASS, and BDS system time, are identified by a unique GNSS ID.
explanation: The context describes GNSS as a satellite-based system providing location and timing information crucial for synchronizing mobile devices with the network. This functionality directly relates to telecommunications operations, classifying it as a technology.
section_title: 8.1.2.1.1	Reference Time
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