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GIS och Positionering. GIS 101 Satellit/GPS Mobil

Observed Time Difference Of Arrival (OTDOA) is also a Release 9 positioning method, in which the UE measures the downlink Positioning Reference Signal (PRS) time difference of arrivals of several neighbor cells in comparison to a reference cell. ference of arrival (OTDOA) will provide even more accurate results. This method is used by the LTE wireless communica-tions standard and is based on the delay differences between signals emitted by several LTE base stations. The conventional satellite-based method: A-GPS Significantly better results are obtained by using GPS signals, The study found that the existing positioning, based on Observed Time Difference of Arrival (OTDOA) in LTE does meet the FCC indoor user requirements for horizontal accuracy. Location-based services and emergency call positioning drive the development of positioning in wireless networks. The used positioning technique is known as observed time difference of arrival (OTDOA), because the device measures the arrival time of several transmitted reference signals. By using the difference between the observed arrival times, the position of the device can be estimated.

List of 4 OTDOA definitions. Top OTDOA abbreviation meanings updated December 2020 Hu, Sha et al. "Improving the Performance of OTDOA based Positioning in NB-IoT Systems". IEEE GLOBECOM, Singapore, Dec. 2017.

Top OTDOA abbreviation meanings updated December 2020 Hu, Sha et al. "Improving the Performance of OTDOA based Positioning in NB-IoT Systems". IEEE GLOBECOM, Singapore, Dec. 2017.

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This video is about OTDOA Source: https://en.wikipedia.org/wiki/OTDOA Difference of Arrival (OTDOA) and Assisted Global Navigation Satellite System (A-GNSS), due to the high level of accuracy these methods can achieve with no requirement for additional radio network equipment (where OTDOA is used for indoor locations and A-GNSS for outdoor environments). To further improve results, these methods Similarly to an OTDOA procedure, a E-CID procedure is initiated through the LPP protocol by the ESMLC, with a ECID-RequestLocationInformation request message. The UE performs and collects the necessary measurements, and reports them back using the ECID-ProvideLocationInformation.

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OTDOA Positioning for Multipath Environments Ivar Olofsson. Master of Science Thesis in Electrical Engineering Enhancements in LTE OTDOA Positioning for Multipath Environments Ivar Olofsson LiTH-ISY-EX--16/4950--SE Supervisor: Vladimir Savic isy, Linköping University Henrik Rydén 2. hellaPHY OTDOA RSTD measurements and position estimation is tightly coupled and optimized for performance and energy conservation; and 3. the hellaPHY OTDOA protocol is much lighter than the standard LPP/SUPL protocol [2, 3] With standard OTDOA uplink RSTD transmissions shortens UE battery life and adds congestion to the network. Improving the Performance of OTDOA based Positioning in NB-IoT Systems Hu, Sha LU; Berg, Axel; Li, Xuhong LU and Rusek, Fredrik LU () IEEE GLOBECOM 2017 p.1-7. Mark; Abstract In this paper, we consider positioning with observed-time-difference-of-arrival (OTDOA) for a device deployed in long-term-evolution (LTE) based narrow-band Internet-of-things (NB-IoT) systems. Recently, time-methods of terminal localization within the network have been the focus of attention, with the OTDoA ( Observed Time Difference of Arrival ) method in particular.

Inspec keywords: OTDOA is a UE-assisted method, in which the UE measures the time of arrival (TOA) of specific Positioning Reference Signals (PRS) transmitted by cellular base stations and reports the measured TOA estimates to the location server. The location server 3GPP TS 36.355 version 10.0.0 Release 10 ETSI 8 ETSI TS 136 355 V10.0.0 (2011-01) Foreword This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP). The contents of the present document are subject to continuing work within the … OTDOA stands for Observed Time Difference of Arrival. Suggest new definition. This definition appears frequently and is found in the following Acronym Finder categories: Science, medicine, engineering, etc. Link/Page Citation Abbreviation 2016-06-29 A Novel Weighting Method for Multiple OTDOA based Positioning in 3GPP LTE System Han Jun Kim Sungkyunkwan University 300 Cheoncheon-dong, Jangan-gu Suwon-si, Gyunggy-do, Korea +82-31-290-7207 Kyunghoon Lee Sungkyunkwan University 300 Cheoncheon-dong, Jangan-gu Suwon-si, Gyunggy-do, Korea +82-31-290-7207 Hyung-Jin Choi Sungkyunkwan University 300 Cheoncheon-dong, Jangan-gu … 3GPP TS 36.355 version 9.2.1 Release 9 ETSI 8 ETSI TS 136 355 V9.2.1 (2010-07) Foreword This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP).
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How OTDOA Works • OTDOA uses hyperbolic multilateral algorithm to determine time of arrival of downlink signals from multiple eNBs (includes 1 serving eNB and 2 or more neighbour eNBs). • TOA from neighbour eNBs are substracted from reference or serving eNB to form OTDOA's.
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The test hardware can be configured on a modular basis to meet OTDOA (Observed Time Difference of Arrival) † UE location can be tri-laterated with the knowledge of three or more eNB’s –Transmit timings of the cells in the system and their geographical locations –Received time difference of at least two other cells vs. serving cell in the UE Assisted Satellite positioning (A-GPS, etc) Observed Time Difference of Arrival (OTDOA) and enhanced Cell ID (eCID) Hybrid Methods: Hybrid-GNSS or GNSS + Mobile Radio Cellular Positioning like OTDOA Control Plane (C-Plane) and User Plane (U-Plane) session handling: LPP, SUPL 2.0 Mobile phone users expect the same Quality of Service whether they are stationary, on Enhanced Cell ID, E-CellID, or E-CID is a positioning feature introduced in rel9 E-UTRA (LTE radio).

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The location server 3GPP TS 36.355 version 10.0.0 Release 10 ETSI 8 ETSI TS 136 355 V10.0.0 (2011-01) Foreword This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP). The contents of the present document are subject to continuing work within the … OTDOA stands for Observed Time Difference of Arrival. Suggest new definition. This definition appears frequently and is found in the following Acronym Finder categories: Science, medicine, engineering, etc. Link/Page Citation Abbreviation 2016-06-29 A Novel Weighting Method for Multiple OTDOA based Positioning in 3GPP LTE System Han Jun Kim Sungkyunkwan University 300 Cheoncheon-dong, Jangan-gu Suwon-si, Gyunggy-do, Korea +82-31-290-7207 Kyunghoon Lee Sungkyunkwan University 300 Cheoncheon-dong, Jangan-gu Suwon-si, Gyunggy-do, Korea +82-31-290-7207 Hyung-Jin Choi Sungkyunkwan University 300 Cheoncheon-dong, Jangan-gu … 3GPP TS 36.355 version 9.2.1 Release 9 ETSI 8 ETSI TS 136 355 V9.2.1 (2010-07) Foreword This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP).

Positioning for the Internet of Things: A 3GPP Perspective

It's a multilateration method in which the User Equipment (UE) measures the time difference between some specific signals from several eNodeBs and reports these time differences to a specific device in the network (the ESMLC). Uplink OTDOA (U-TDOA) is specified in 3GPP Release-11. How OTDOA Works • OTDOA uses hyperbolic multilateral algorithm to determine time of arrival of downlink signals from multiple eNBs (includes 1 serving eNB and 2 or more neighbour eNBs). • TOA from neighbour eNBs are substracted from reference or serving eNB to form OTDOA's. 2014-06-06 · This document describes the functionalities for the support of OTDOA location in LTE as currently defined in 3GPP (and OMA).

hellaPHY OTDOA RSTD measurements and position estimation is tightly coupled and optimized for performance and energy conservation; and 3. the hellaPHY OTDOA protocol is much lighter than the standard LPP/SUPL protocol [2, 3] With standard OTDOA uplink RSTD transmissions shortens UE battery life and adds congestion to the network. LTE OTDOA Reference Guide With the rollout of LTE comes a new focus on enabling E911 and LBS. Current LTE standards support three independent handset based positioning techniques: Assisted Global Navigation Satellite Systems (A-GNSS), Observed Time Difference of Arrival (OTDO A), and Enhanced Cell ID (ECID). Förbättringar i LTE OTDOA-positionering för multipath-miljöer (Swedish) Abstract [en] By using existing radio network infrastructure, a user can be positioned even where GPS and other positioning technologies lack coverage. Arrival (OTDoA), detta examensarbete undersöker ytterligare prestandaegenskaper hos UTDoA i LTE. Parallellt med 3GPP:s studie för inomhuspositionering, som huvudsakligen baseras på ner-länk OTDoA, studerar denna avhandling den potentiella användningen av UTDoA i LTE med samma typ av överenskomna scenarier och simuleringsparametrar.