The measurements may be for an observed time of arrival difference (OTDOA) positioning method or an extended cell ID (ECID) positioning method. Determining the measured radio source for an ambiguous cell may be used to improve the location estimate for user equipment (UE).

Hu, Sha et al. "Improving the Performance of OTDOA based Positioning in NB-IoT Systems". IEEE GLOBECOM, Singapore, Dec. 2017. IEEE - Institute of Electrical and Electronics Engineers Inc. 2018, 1-7.

obtained in [2] a positioning accuracy better than 20 m for 50% and 63 m for 95% of the cases using the measurements of a channel campaign. More re- The LTE Positioning Protocol (LPP) supports user Reference Signal Time Difference (RSTD) reports based on the Time of Arrival (TOA) for a Positioning Reference Signal (PRS). In the current reporting format, only one RSTD for each base station is considered, but for indoor environments this is easily biased due to fading and multipath issues, resulting in a Non-Line of Sight (NLOS) bias. In this paper we investigate the positioning accuracy of user equipment (UE) with observed time difference of arrival (OTDoA) technique in Long Term Evolution (LTE) networks using dedicated Cell ID based positioning + Enhancements † Server knows the geographical locations of the cells † Timing Advance can be used to find the UE’s distance from the eNB antenna † Neighbor cell measurements etc. can be used to increase the accuracy LTE Positioning Methods- overview 3GPP Release 9 OTDOA (Observed Time Difference of Arrival) Performance of OTDOA positioning in narrowband IoT systems Abstract: Narrowband Internet of Things (NB-IoT) is an emerging cellular technology designed to target low-cost devices, high coverage, long device battery life (more than ten years), and massive capacity. Article Abstract.

Otdoa positioning

(RSTD measurements in case of OTDOA) for computation 11 Sep 2020 Both OTDOA and joint AOA-ranging methods require accurate time delay estimation of 5G signals to improve positioning performance. Sensors LTE Positioning Technologies. ECID. OTDOA.

For example, [6] uses real measurements and investigates channel impacts on positioning accuracy.

These positioning methods were chosen as they refer to the three hearability from at least three Node Bs. A simulation model for OTDOA based on the path loss model has been developed and is used to simulate data with fixed input parameters and the RSCP of Node Bs from field drive test.

Baseline performance based on 3GPP 3D MIMO of arrival (OTDOA) based positioning for Narrowband Internet of Things (NB-IoT), which will be integrated as a part of the 3rd Generation Partnership Project (3GPP) Long ermT Evolution TE) release 14. ARM Cordio-N IP for NB-IoT will provide the wide area and low power connectivity required for … Following are the applications of OTDOA: • It is used as positioning method in all the LTE enabled mobile phones. • It is used for E911 emergency services in the USA. • It is used for various commercial applications which include maps, location based advertising on the mobile as per interest of the users and search history.

The OTDOA positioning method makes use of the measured timing of downlink signals received from multiple TPs, comprising eNBs, ng-eNBs and PRS-only TPs, at the UE. The UE measures the timing of the received signals using assistance data received from the positioning server, and the resulting measurements are used to locate the UE in relation to the neighbouring TPs.

en OTDOA-IPDL-based positioning; OTDOA-IPDL positioning.

A-GNSS positioning is based on cellular network as sistance of GNSS r 2017-11-08 The 3GPP consortium responded to this need by enhancing its 4G communication standard (LTE) with positioning capabilities. In the adopted Observed Time Difference of Arrival (OTDOA) algorithm the base stations transmit so-called Positioning Reference Signals (PRS). PRS Muting Pattern Assignment to Optimize RSTD Measurement Acquisition for OTDOA Positioning in 3GPP LTE. Ramya Srinivasan, Grant A. Marshall, Guttorm R. Opshaug, Borislav Ristic, Kirk A. Burroughs, Sven Fischer, Shuping Zhang, Daniel Henriksson A, François Cardinal The measurements may be for an observed time of arrival difference (OTDOA) positioning method or an extended cell ID (ECID) positioning method. Determining the measured radio source for an ambiguous cell may be used to improve the location estimate for user equipment (UE). OTDOA positioning accuracy is greatly impacted by both the RSTD measurement quality and the position estimation quality.
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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 ). 2014-06-06 · Observed Time Difference Of Arrival (OTDOA) Positioning in 3GPP LTE Contents 5 Figure 8-14: Illustration of the Effect of a Repeater Installation in a Network Using OTDOA.

• UE location can be tri-laterated with the knowledge of Several positioning techniques are based on time-difference-of-arrival (TDOA) or time-of arrival (TOA) measurements. Examples include OTDOA, UTDOA, GNSS, 31 May 2020 Figure 24 shows a illustration of positioning illustration by the OTDOA method using the Position. Reference Signal (PRS) (the times τxy to be It is used as positioning method in all the LTE enabled mobile phones. It is used for E911 emergency services in the USA. It is used for various commercial 23 Oct 2020 Release-15 NR provides support for RAT-independent positioning techniques and Observed Time Difference Of Arrival (OTDOA) on LTE positioning reference signal (PRS) for LTE system (see next section for details).
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under Fading Channels -- Performance of Enhanced LTE OTDOA Positioning 5G networks -- Green Base Station Placement for Microwave Backhaul Links

OTDOA (Observed Time Difference of Arrival). • UE location can be tri-laterated with the knowledge of Several positioning techniques are based on time-difference-of-arrival (TDOA) or time-of arrival (TOA) measurements. Examples include OTDOA, UTDOA, GNSS, 31 May 2020 Figure 24 shows a illustration of positioning illustration by the OTDOA method using the Position. Reference Signal (PRS) (the times τxy to be It is used as positioning method in all the LTE enabled mobile phones.

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Cell ID based positioning + Enhancements † Server knows the geographical locations of the cells † Timing Advance can be used to find the UE’s distance from the eNB antenna † Neighbor cell measurements etc. can be used to increase the accuracy LTE Positioning Methods- overview 3GPP Release 9 OTDOA (Observed Time Difference of Arrival)

Baseline performance based on 3GPP 3D MIMO C. Position Estimation The OTDOA method applies multilateration to estimate the position. Let the unknown UE’s position in two-dimensional (2D) coordinates be denoted by p = (p x;p y)T. Further, let N be the set of eNBs in the cellular network; N= f1;:::;Ng.