OTDOA. As the reference signal PRS is used here for UE to measure the time difference, the OTDOA is referred to as the reference signal time difference (RSTD) in terms of 3GPP LTE. Similarly, for E-CID, the so-called UE Rx–Tx time dif-ference is measured. The UE Rx–Tx time difference is deﬁned as the difference between the UE received (Rx)

A Performance of OTDOA positioning in NB-IoT Systems 81. 1 Introduction . B Localization in 3GPP LTE based on one RTT and one TDOA observa-. tion 101.

• 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. In the adopted Observed Time Difference of Arrival (OTDOA) algorithm the base stations transmit so-called Positioning Reference Signals (PRS). OTDOA. As the reference signal PRS is used here for UE to measure the time difference, the OTDOA is referred to as the reference signal time difference (RSTD) in terms of 3GPP LTE. Similarly, for E-CID, the so-called UE Rx–Tx time dif-ference is measured.

In this version of the specification, only OTDOA based on LTE signals is supported. In the OTDOA positioning method, the UE position is estimated based on measurements taken at the UE of downlink radio signals from multiple E-UTRA TPs (possibly including PRS-only E-UTRA TPs from a PRS-based TBS), along with knowledge of the geographical coordinates of the measured TPs and their 8.2.1 General. In this version of the specification, only OTDOA based on LTE signals is supported. In the OTDOA positioning method, the UE position is estimated based on measurements taken at the UE of downlink radio signals from multiple E-UTRA TPs (possibly including PRS-only E-UTRA TPs from a PRS-based TBS), along with knowledge of the geographical coordinates of the measured TPs and their 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 arrival (OTDOA) is a positioning technique introduced in Release 9 of the 3GPP LTE speciﬁcation.

In the OTDOA positioning method, the UE position is estimated based on measurements taken at the UE of downlink radio signals from multiple E-UTRA TPs (possibly including PRS-only E-UTRA TPs from a PRS-based TBS), along with knowledge of the geographical coordinates of the measured TPs and their 8.2.1 General. In this version of the specification, only OTDOA based on LTE signals is supported. In the OTDOA positioning method, the UE position is estimated based on measurements taken at the UE of downlink radio signals from multiple E-UTRA TPs (possibly including PRS-only E-UTRA TPs from a PRS-based TBS), along with knowledge of the geographical coordinates of the measured TPs and their 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.

OTDOA is listed in the World's largest and most is a protocol that uses cell towers to measure the time it takes for an LTE signal to reach a tower to

8.1 Positioning: E-CID and OTDOA. 27.

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. Notes

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.

OTDOA positioning in legacy LTE systems is widely studied in the literature. For example, [6] uses real mea-surements and investigates channel impacts on position-ing accuracy. An error analysis of OTDOA is reported in [7].
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Introduction. Nowadays, radio-localization technologies constitute a rapidly developing industrial branch. There is a 2.

LTE Release 9 provides support for the following location technologies: Satellite Based Positioning: Autonomous and Assisted Global Navigation Satellite Systems (A-GNSS) such as GPS and GLONASS Mobile Radio Cellular Positioning: Observed Time Difference of Arrival (OTDOA) and enhanced Cell ID (eCID) Hybrid Methods: One of the most promising radio-localization methods in the LTE system is OTDoA (Observed Time Difference of Arrival), in which the position is estimated on the basis of the measurement results of time difference of the arrival of the signals to the UE (User Equipment) antenna from a set of at least three base stations, as well as on the information about both the coordinates of the base stations and about transmission timing at those base stations.
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OTDOA l. eCID l Hybrid methods l. Combination of: – Multiple satellite based methods. – Satellites and Mobile radio positioning. COMPANY RESTRICTED

More recently, a 4G-capable mobile broadband platform is offered by LTE radio-access technology [1] developed by 3GPP. Today, there are around 5.8 billion mobile subscriptions. In the US market, for example, LTE networks Know LTE Friday, 14 March 2014.

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as for LTE OTDOA method, a new physical signal- position reference signal (PRS ) [7] dedicated for positioning is introduced to enhance positioning.

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. LTE Release 9 provides support for the following location technologies: Satellite Based Positioning: Autonomous and Assisted Global Navigation Satellite Systems (A-GNSS) such as GPS and GLONASS Mobile Radio Cellular Positioning: Observed Time Difference of Arrival (OTDOA) and enhanced Cell ID (eCID) Hybrid Methods: One of the most promising radio-localization methods in the LTE system is OTDoA (Observed Time Difference of Arrival), in which the position is estimated on the basis of the measurement results of time difference of the arrival of the signals to the UE (User Equipment) antenna from a set of at least three base stations, as well as on the information about both the coordinates of the base stations and about transmission timing at those base stations.

actually located. LTE Release 9 provides support for the following location technologies: Satellite Based Positioning: Autonomous and Assisted Global Navigation Satellite Systems (A-GNSS) such as GPS and GLONASS Mobile Radio Cellular Positioning: Observed Time Difference of Arrival (OTDOA) and enhanced Cell ID (eCID) Hybrid Methods:

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].

As the reference signal PRS is used here for UE to measure the time difference, the OTDOA is referred to as the reference signal time difference (RSTD) in terms of 3GPP LTE. Similarly, for E-CID, the so-called UE Rx–Tx time dif-ference is measured.