name: DGANSS
full_form: Differential GANSS
context: The TA method is based on the Timing Advance (TA) parameter for uplink transmissions. For a UE with an active call, the TA value is known for the serving base station. To obtain TA values when the UE is in idle mode a special call, not noticed by the subscriber (no ringing tone), may be set up. The cell-ID of the serving cell or sector and the TA is determined. The TA measurement describes a circle (or arc within a sector) along which the UE may be located. This circle (or arc) may be combined with other techniques to resolve position ambiguity or to improve accuracy of other techniques. The accuracy of the position estimates made with this technique depends on the precision of the timing measurements, delays in the UE and is also subject to the effects of multipath radio propagation. The TA may be used to assist all positioning mechanisms and as a fall-back procedure. If the UE is operating in the soft handover mode, the TA will generally be that of the primary serving base station,
description: Differential GANSS (DGANSS) is a type of message or data element used in the context of Global Navigation Satellite System (GNSS) corrections and assistance data. It is specifically mentioned as part of the GANSS Generic Data IE, which contains various types of GNSS-related information such as navigation models, time recovery, UTC models, almanac, real-time integrity, and more. The DGANSS Corrections IE itself holds one or several DGANSS Information IEs, each associated with a specific GNSS signal.
explanation: The context provided clearly indicates that DGANSS is related to the transmission of specific data elements within the GANSS Generic Data IE, focusing on corrections and assistance for Global Navigation Satellite Systems. This points towards its classification as a 'Message' entity type, given its role in conveying particular information between network components or systems.
section_title: 8.2.26.2	Successful Operation
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