‪Kamiar Radnosrati‬ - ‪Google Scholar‬

CommSys: Finished Student Theses at - Linköpings Universitet

K Radnosrati, G Localization in 3GPP LTE based on one RTT and one TDOA observation. Enhancements in LTE OTDOA Positioning for Multipath Environments · Ivar Olofsson. Computer Science. 2016. TLDR.

Only LTE OTDOA Positioning Reference Signals 36.211 §6.10.4 Downlink PRS OTDOA is a feature to determine the location of a User Equipment based on radio access network information Downlink OTDOA assistance provides the UE the cell PRS position for intra or inter-frequency RSTD measurements 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. OTDOA — This method uses the measured timing of downlink signals received from multiple eNBs to locate the user device in relation to neighboring eNBs. In dense urban and indoor environments, OTDOA can be used to supplement AGPS, provided the user device can detect position reference signals (PRS) from three or more eNBs. actually located.

6 Nov 2020 Here, the downlink LTE signals are used to produce the TOA indoor positioning performances of the LTE OTDOA technique using the first AFLT, LTE OTDOA) that have been empirically proven to deliver 100m 67% of GSM/UMTS, LTE mobile operators to evaluate various positioning methods for of the existing Observed Time Difference of Arrival (OTDOA) positioning technique for The NB-IoT radio access technology is mainly based on existing LTE 30 Dec 2020 Keywords: LTE; Positioning; Estimation; OTDoA; Time of Arrival; Correlation; Monte-Carlo Simulation; Multi-Lateration; Fading Channels; Difference Of Arrival (OTDOA) on LTE carriers.

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• It is known as downlink Observed Time Difference Of Arrival. • It is assisted by UE. It means downlink signals from serving cell and multiple neighbours are received by UE. LTE OTDOA Positioning Reference Signals 36.211 §6.10.4 Downlink PRS. OTDOA is a feature to determine the location of a User Equipment based on radio access network information Downlink OTDOA assistance provides the UE the cell PRS position for intra or inter-frequency RSTD measurements Positioning reference signals are transmitted on antenna port 6 The 3GPP consortium responded to this need by enhancing its 4G communication standard (LTE) with positioning capabilities.

CommSys: Finished Student Theses at - Linköpings Universitet

OTDOA — This method uses the measured timing of downlink signals received from multiple eNBs to locate the user device in relation to neighboring eNBs.

The E-UTRAN processes these OTDOA measurements from the UE in an implementation-specific and non-standardized manner to estimate 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 Se hela listan på hindawi.com synchronization requirements for OTDOA are much more stringent compared to the synchronization requirements for communication purposes.
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2014-06-06 · This document describes the functionalities for the support of OTDOA location in LTE as currently defined in 3GPP (and OMA). It is intended as a one stop guide to provide an overview of the OTDOA feature for operators and manufacturers interested in the deployment 2 OTDOA is the positioning method for UTRAN and for E-UTRAN, as specified in Reference [2]. Only OTDOA for E-UTRAN (i.e. on LTE networks) is introduced in this whitepaper.

Today, there are around 5.8 billion mobile subscriptions. In the US market, for example, LTE networks Know LTE Friday, 14 March 2014. The E-UTRAN processes these OTDOA measurements from the UE in an implementation-specific and non-standardized manner to estimate 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 Se hela listan på hindawi.com synchronization requirements for OTDOA are much more stringent compared to the synchronization requirements for communication purposes. Table 1 summarizes some requirements for LTE eNodeB’s. Table 1:Requirements for clock synchronization As between eNodeB synchronization corrupts, the OTDOA A Bayesian Probabilistic Approach to Hybrid Localization with GNSS and LTE-OTDOA in Multipath Channels Abstract: For time-of-arrival (TOA) localization, the channel bias introduced by unresolvable multipath and non-line-of-sight (NLOS) reflections severely degrades the performance. 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 Suwon-si, Gyunggy-do Evaluating OTDOA Technology in Support of PS-LTE As mobile device usage becomes more ubiquitous, there is an increasing need for location accuracy, especially in the event of an emergency. 2017-05-09 · OTODA LTE Nakagami-m Adaptive OTDOA AWGN Adaptive filters Fading channels Positioning This is a preview of subscription content, log in to check access.
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• UE location can be tri-laterated with the knowledge of OTDOA l. eCID l Hybrid methods l. Combination of: – Multiple satellite based methods. – Satellites and Mobile radio positioning.

B Localization in 3GPP LTE based on one RTT and one TDOA observa-. tion 101. Performance of OTDOA positioning in narrowband IoT systems.
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It is intended as a one stop guide to provide an overview of the OTDOA feature for operators and manufacturers interested in the deployment 2 OTDOA is the positioning method for UTRAN and for E-UTRAN, as specified in Reference [2]. Only OTDOA for E-UTRAN (i.e. on LTE networks) is introduced in this whitepaper. 3 In 3GPP LTE specifications, a User Equipment (UE) refers to a Mobile Station (MS) and an eNodeB (eNB) refers to a Base Station (BS). lte Release 9 introduced support to the positioning methods Assisted Global Navigation Satellite Systems (a-gnss), Enhanced Cell ID (e-cid), and Observed Time Diﬀerence of Arrival (otdoa) [1]. These methods have diﬀerent position accuracy and requirements, and a single method is not the best choice for every OTDOA is a feature to determine the location of a User Equipment based on radio access network information Downlink OTDOA assistance provides the UE the cell PRS position for intra or inter-frequency RSTD measurements Positioning reference signals are transmitted on antenna port 6 The PRS sequences use QPSK modulation (2 bits per symbol) 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.

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IEEE Trans. Veh. Performance of OTDOA positioning in narrowband IoT systems.

Improving the Performance of OTDOA based Positioning in

SPIRENT REfERENCE GUIdE • 3. Uplink OTDOA? downlink oTdoA is a handset-based method, where the as for LTE OTDOA method, a new physical signal- position reference signal (PRS ) [7] dedicated for positioning is introduced to enhance positioning. Because of scalable measurement bandwidth in long term evolution (LTE), the performance of reference signal time difference (RSTD) suffers from small Special reference signals called PRS (Positioning Reference Signal) were designed for the LTE OTDoA method. These signals are placed at a radio resource The OTDOA technology is based on measurement of reference signal time difference (RSTD) from different base stations. The location of a UE can be obtained 13 Aug 2015 In this paper we investigate the positioning accuracy of user equipment (UE) with observed time difference of arrival (OTDoA) technique in Maximum likelihood TOA and OTDOA estimation with first arriving path detection for 3GPP LTE systemŽ.

The UE Rx–Tx time difference is deﬁned as the difference between the UE received (Rx) 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). 8.2.1 General.