GIS och Positionering
OTDOA-Based Positioning in NB-IoT - LTH/EIT
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.
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Aug 13, 2015 In this paper we investigate the positioning accuracy of user equipment (UE) with observed time difference of arrival (OTDoA) technique in The results show a LTE OTDoA positioning accuracy better than 20 m for 50% of the cases and 63 m for 95% of the cases, using the PRS over a bandwidth of 20 Another UE-assisted method called the OTDOA has attracted more attention for providing high accuracy. In. 3GPP LTE Rel. 9, the PRS is introduced to enhance Positioning with PRS signals from 3 e-NodeBs based on OTDOA, where the ToA (τ0,0, τ1 improves the accuracy of the ToA estimation significantly. C. OTDOA The OTDOA technology is based on measurement of reference signal time To ensure the accuracy, the LTE-A standard has required that the PRS from each Neighbor cell measurements etc. can be used to increase the accuracy. LTE Positioning Methods- overview. 3GPP Release 9. OTDOA (Observed Time Sep 5, 2017 Positioning with PRS signals from 3 e-NodeBs based on OTDOA, where the ToA improves the accuracy of the ToA estimation significantly.
Section III gives the simulation parameters, GPS and OTDOA accuracy characteristics, and discusses aircraft position estimation in terms of particle prediction and update.
PDF Time of Flight Estimation for Radio Network Positioning
Section IV gives the results of the simulation, in terms of 2-D error, using the sensors individually and then combining the GPS and OTDOA measurements for fused results. 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. your NB-IoT OTDOA positioning design OTDOA and its advantages 3GPP Release 14 further improves NB-IoT to enhance the user experience.
GIS och Positionering
(TA-IPDL)  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.
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. Several approaches have been implemented at transmitter side with an objective of improving positioning accuracy. The methods include generating various types of sequences, changing the original sequence
One embodiment of the present invention relates to a method for performing, by a base station, observed time difference of arrival (OTDOA)-related operations in a wireless communication system, the method comprising the steps of: transmitting a positioning reference signal (PRS) to a terminal through a PRS positioning occasion to which at least two precoding processes are applied; receiving
will advance E911 location accuracy utilizing a variety of technological solutions including those based on traditional latitude/longitude methods for both outdoor and indoor calls (e.g., AGNSS, OTDOA), as well as emerging next -generation solutions that would provide a “ dispatchable location” to first responders for calls made from indoors.
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OTDOA it is possible to more accurately calculate a posi-tion than with one system alone. Especially in street can-yons, where receivers made for only one system have failed, performed using an R&S®SMBV100A vector signal generator with the appropriate options.
For upcoming 5G
. 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. 67% of all emergency calls made on the county level need to be in a range of 50 m or less. These are quite high accuracy requirements that need to be fulfilled and guaranteed no
(Accuracy level 4/5/6) (Accuracy level 4) G.811 PRC G.811.1 ePRC G.812 •Strict requirements to support OTDOA (Observed Time Difference of Arrival)
Observed time difference of arrival (OTDOA) is a downlink based positioning method described by 3GPP as one of the NB-IoT positioning methods to increase positioning accuracy.
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The most broad parameter used to evaluate the effect of the geometry on the last accuracy is the Geometrical Dilution of Precision (GDOP). The GDOP is a measure of how much the position mistake that outcomes Fig. 5.
Publications; Automatic Control; Linköping University
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.  FIG There are two types of OTDOA viz. downlink OTDOA and uplink OTDOA (i.e. U- TDOA). In order to achieve better and accurate positioning performance, capabilities provide limited accuracy or demand high battery and processing power.
LTE Positioning Methods- overview. 3GPP Release 9. OTDOA (Observed Time Sep 5, 2017 Positioning with PRS signals from 3 e-NodeBs based on OTDOA, where the ToA improves the accuracy of the ToA estimation significantly. 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.