The positioning accuracy in OTDoA methoddepends on various factors, e.g. network deployment, signal propagation conditionand properties of 

Observed Time Difference of Arrival (OTDOA) is the method used to estimate the position of the user due to its high accuracy…

Abstract: The accuracy of the observed time difference of arrival (OTDOA) in the long-term evolution (LTE) systems depends on the accuracy of the time of arrival (TOA) measurements, which are often corrupted by various errors caused by non-light-of-sight propagation, multipath interference, noise, and path detection techniques. Furthermore, signal bandwidth, channel condition, distance from the evolved node-B, and scatterer distribution are the affecting parameters on the OTDOA accuracy. The accuracy of the observed time difference of arrival (OTDOA) in the long-term evolution (LTE) systems depends on the accuracy of the time of arrival (TOA) measurements, which are often In the case of providing a measurement estimation for a UAS in an urban canyon, accuracy is the most important characteristic of the estimation. This leads to A-GNSS, OTDOA, or Uplink-TDOA as the best 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. OTDOA it is possible to more accurately calculate a posi-tion than with one system alone.

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Baseline performance based on 3GPP 3D MIMO deployment and propagation model is investigated in [8]. The work in [9] The theoretical accuracy of the TOA estimation is limited by the CRLB. In this section, we compute the CRLB of TOA estimation for the OFDM- based LTE signal. Here, we relax the constraint of the TOA to positive real number (instead of integer mul- tiplication of the sampling time intervalTs).

The 5G  On top of that, an OTDoA-capable UE requires the presence of highly accurate clocks, which is often not the case in low-cost IoT devices. Thus, there is a need for  Jun 19, 2017 difference of arrival (OTDOA) based positioning for Narrowband Internet of 3.6 Accuracy of OTDOA-based Positioning and Previous Work . Nov 19, 2020 The main challenges and limitations are the narrow bandwidth, low power and low cost which reduces the accuracy of the time of arrival (TOA)  e-mail: pyc@knu.ac.krO, kjs@knu.ac.kr*.

One of the main factors that have an impact on the accuracy of position estimation in the OTDoA method is a propagation environment. The best accuracy could be achieved in the LoS (Line of Sight) conditions, where a signal travels directly from the source to the receiver.

Here, we relax the constraint of the TOA to positive real number (instead of integer mul- tiplication of the sampling time intervalTs). Abstract and Figures 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 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) With the above extensive OTDOA enhancements considered for feMTC and NB-IoT, based on the limited time-dispersion/ time-spread/ multipath EPA (Extended Pedestrian A model) 3GPP channel scenario with outdoor deployment of 1.732km ISD (Inter-Site Distance), the 50m positioning accuracy for 67% of the UEs is achievable for both device types. OTDOA (Observed Time Difference Of Arrival) is a positioning feature introduced in rel9 E-UTRA (LTE radio).

The theoretical accuracy of the TOA estimation is limited by the CRLB. In this section, we compute the CRLB of TOA estimation for the OFDM- based LTE signal. Here, we relax the constraint of the TOA to positive real number (instead of integer mul- tiplication of the sampling time intervalTs).

LTE brings a promise of improved location accuracy with new positioning technologies and their integration using hybrid techniques. Although established technologies such as A-GNSS (A-GPS and A-GLONASS) provides excellent performance in environments with a clear view of the sky, performance is often poor indoors, where detection of satellite signals is limited. 9.3.12 TDD intra-frequency RSTD Measurement Accuracy in CE Mode B 9.4 RSTD Inter-Frequency Measurements for UE Category M1/M2 9.4.1 FDD inter-frequency RSTD Measurement Reporting Delay in CE Mode A Geofencing in 5G – “3GPP Release 15 will use LPP as a positioning protocol and support the associated positioning methods such as Global Navigation Satellite System (GNSS) and Observed Time Difference of Arrival (OTDOA)).

The main challenges and limitations are the narrow bandwidth, low power and low cost which reduces the accuracy of the time of arrival (TOA) estimation. In this paper, we consider the positioning scenario of Narrowband IoT (NB-IoT) that can benefit from observed time difference of arrival (OTDOA). By Methods and devices for performing hybrid fingerprinting/observed time difference of arrival (OTDOA) positioning are described. Fingerprinting information can be used to improve OTDOA results by using the fingerprinting information to generate OTDOA assistance information. turn influences the positioning accuracy. In this thesis, an OTDOA positioning simulation platform has been built.
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The positioning accuracy in OTDOA method depends on various factors e.g., network deployment, signal propagation condition, and properties of PRS. For 4G   POSITIONING WITH LTE • GREATER ACCURACY EVERYWHERE are automatically built up by collecting high-precision OTDOA and A-GNSS positions,   OTDOA is a positioning feature introduced in rel9 E-UTRA (LTE radio). It's a multilateration In December 2008, due to regulatory requirements like the E911 , which require that it should be possible to locate UEs with a certain acc 12 is a pair of graphs illustrating the autocorrelation profile (a significant factor for RSTD accuracy) for PRS by coherent accumulation within a subframe. [0019] FIG   There are two types of OTDOA viz.

The GDOP is a measure of how much the position mistake that outcomes Fig. 5. OTDOA RMSE cumulative probability before enhancement. With the enhancement given to the OTDOA technique by adding the adaptive filter- ing process (A-OTDOA) method it is clearly shown by figure 6 and table 2 that the accuracy has reached significantly high levels even for the worst case scenario with the Nakagami-m fading channel.
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2014-06-06 · 8 describes several factors which influence OTDOA location performance. Some of these factors are beyond vendor or operator control (such as radio propagation environment). Other factors however, can be controlled by proper OTDOA network deployment (such as proper base station synchronization and cell data base generation).

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 to positioning via OTDOA method can be found in [1]. The positioning accuracy in OTDOA method depends on various factors e.g., network deployment, signal propagation condition, and properties of PRS. For 4G cellular (LTE) indoor users, positioning accuracy can be around 50 meters [2].

Description of the signals and procedures related to OTDOA location, as specified in 3GPP Release 9 and later, as well as in OMA. Discussion of some details relating to OTDOA which may be considered out of scope of the 3GPP/OMA standards but are needed to achieve successful deployment of OTDOA.

NR3C produces better accuracy in known conditions of multipath delays. GSM, Observed Time Difference of Arrival (OTDOA) for UMTS, uTDOA (uplink Time  Oct 1, 2019 Averaging of observed time difference of arrival (OTDOA) network location estimates was found in one study to have a 60m median error, limiting  users can be estimated with high accuracy (16 œ 20 m in free propagation availability enhancements to OTDOA (time alignment IPDL. (TA-IPDL) [2]  Aug 6, 2014 OTDOA accuracy is 50 to 200 meters. LTE brings a promise of improved location accuracy with new positioning technologies and their integration  on OTDoA due to the use of a dedicated downlink signal for positioning, i.e. the positioning reference signal (PRS), which is a multicarrier Orthogonal Frequency   Jul 6, 2012 improve the speed and accuracy of positioning within the mobile device. Secondly Figure 3.4: OTDOA accuracy overview. Source: Zekavat  Nov 5, 2001 location method that gives fast response and accuracy to a fraction of cell In UMTS, the OTDOA measurements will be available in every MS  circumstance and the location estimation with high precision is required.

We investigate the possibility of optimizing the number of reports per minute budget on horizontal positioning accuracy using an on-demand reporting method 2016-06-29 · Abstract: The accuracy of the observed time difference of arrival (OTDOA) in the long-term evolution (LTE) systems depends on the accuracy of the time of arrival (TOA) measurements, which are often corrupted by various errors caused by non-light-of-sight propagation, multipath interference, noise, and path detection techniques. nique is known as observed time dierence of arrialv (OTDOA), because the device measures the arrival time of several transmitted reference signals. 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 to positioning via OTDOA method can be found in [1]. The positioning accuracy in OTDOA method depends on various factors e.g., network deployment, signal propagation condition, and properties of PRS. For 4G cellular (LTE) indoor users, positioning accuracy can be around 50 meters [2]. For upcoming 5G [1]. With this mandate the FCC has defined accuracy requirements for the different methods position estimation can be based on for county and country level, i.e.