name: TADV
full_form: Timing Advance
context: In the Cell ID (CID)-based method, the UE position is estimated with the knowledge of the geographical coordinates of its serving eNodeB. Enhanced Cell ID (E-CID) positioning refers to techniques which use additional UE and/or E-UTRAN radio resource related measurements to improve the UE location estimate. For E-UTRAN access, these measurements may include [20, 21]: UE measurements (TS 36.214 [20], TS 36.302 [21]): - Reference signal received power (RSRP); - Reference Signal Received Quality (RSRQ); - UE Rx â Tx time difference; - GERAN RSSI; - UTRAN CPICH RSCP; - UTRAN CPICH Ec/Io; - WLAN RSSI. E-UTRAN measurements (TS 36.214 [20], TS 36.302 [21]): - eNB Rx â Tx time difference - Timing Advance (TADV): - Type1: TADV = (eNB Rx â Tx time difference) + (UE Rx â Tx time difference) - Type2: TADV = eNB Rx â Tx time difference; - Angle of Arrival (AoA). Various techniques exist to use these measurements to estimate the location of the UE. The specific techniques are beyond the scope of this
description: Timing Advance (TADV) is a measurement used in Enhanced Cell ID (E-CID) positioning techniques to improve the UE location estimate. It represents the time difference between the eNodeB's receive and transmit times, and can be calculated in two types: Type1, which combines the eNB Rx-Tx time difference with the UE Rx-Tx time difference, and Type2, which only considers the eNB Rx-Tx time difference.
explanation: TADV is explicitly described as a "measurement" used in E-CID positioning. Its definition revolves around calculating time differences between transmissions, which is characteristic of measurements in telecommunications.
section_title: 8.3.1	General
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biotag_Description: B-Parameter,I-Parameter,O,O,O,O,O,O,O,B-Parameter,I-Parameter,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O