A Optimization-based position estimation 61. B Bayesian ﬁltering 65. Bibliography 71. II Publications. A Performance of OTDOA positioning in NB-IoT Systems

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]. Baseline performance based on 3GPP 3D MIMO

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.

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) 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. Observed Time Difference Of Arrival (OTDOA) is a downlink positioning method in LTE. 8.2.3 OTDOA Positioning Procedures 8.2.3.1 Capability Transfer Procedure. The Capability Transfer procedure for OTDOA positioning is described in 8.2.3.2 Assistance Data Transfer Procedure. The purpose of this procedure is to enable the LMF to provide assistance 8.2.3.3 Location Information OTDOA is a suitable positioning method candidate as it is based on broadcast signals and so enables good scalability which is required for massive IoT scenarios. Considering the different use cases, radio environments, device capabilities and supported bandwidths, NB-IoT and feMTC could properly support the positioning requirements. 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. Observed Time Difference Of Arrival (OTDOA) is a downlink positioning method in LTE. OTDOA is a multilateration method in which a UE (user equipment) measures the time of arrival (TOA) of signals received from multiple base stations (Evolved Node Bs (eNBs)) and computes a reference signal time difference (RSTD) that is reported to the network.

Techniques for supporting positioning with unclear wireless cells are described. An ambiguous cell may employ a distributed antenna system (DAS), one or more remote radio heads (RRH), repeaters, or relays, or may broadcast the same positioning reference signal (PRS) as another neighboring cell. .

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.

OTDOA (Observed Time Difference Of Arrival) is a positioning feature introduced in rel9 E-UTRA (LTE radio). 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 ).

A Performance of OTDOA positioning in NB-IoT Systems Performance of OTDOA positioning in narrowband IoT systems. PIMRC 2017: 1- Gustafsson: Fusion of TOF and TDOA for 3GPP positioning. Siomina, Ari Kangas, Claes Tidestav: Enhanced WCDMA Fingerprinting Localization Using OTDOA Positioning Measurements from LTE. Improving the performance of OTDOA based positioning in NB-IoT systems. S Hu, A Berg, X Li, F Rusek.

Release 16 extends NR to provide native positioning support by introducing RAT-dependent positioning schemes. 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. OTDOA is a suitable positioning method candidate as it is based on broadcast signals and so enables good scalability which is required for massive IoT scenarios. Considering the different use cases, radio environments, device capabilities and supported bandwidths, NB-IoT and feMTC could properly support the positioning requirements. Observed Time Difference of Arrival (OTDOA) and enhanced Cell ID (eCID) Hybrid Methods: Hybrid-GNSS or GNSS + Mobile Radio Cellular Positioning like OTDOA Control Plane (C-Plane) and User Plane (U-Plane) session handling: LPP, SUPL 2.0 Mobile phone users expect the same Quality of Service whether they are stationary, on in its most basic form returns the position of the serving cell in the network.
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The measurement made by the UE for OTDOA positioning is the Reference Signal Time Difference (RSTD) measurement. The RSTD is the relative timing difference between two cells4 – the reference cell and a measured neighboring cell. The RSTD measurement is possible on an intra-frequency cell and on an inter-frequency cell.

The Capability Transfer procedure for OTDOA positioning is described in 8.2.3.2 Assistance Data Transfer Procedure. The purpose of this procedure is to enable the LMF to provide assistance 8.2.3.3 Location Information 2020-10-23 Hu, Sha et al.
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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.

Further, let N be the set of eNBs in the cellular network; N= f1;:::;Ng.

2017-05-09 · In this context, we have developed a new positioning approach called Adaptive Observed Time Difference of Arrival (A-OTDOA) which is compatible with both 3G and 4G user equipment and respond to the emergency calls accuracy criteria.

LTE brings a promise of improved location accuracy with new positioning technologies and their 21 Apr 2016 Ubiquitous Asset Trackers: Communication and Positioning on a Single Platform · Cargo Shipping: GNSS with cellular · Geo-fencing: OTDOA and 29 Apr 2008 uation of the impact of radio network planning on positioning accuracy. Naturally, the OTDOA-positioning is not an exception from exposure arrival (OTDOA) is a positioning technique introduced in Release. 9 of the 3GPP LTE specification. In OTDOA technique, the.

Location: E:3139. Finished:. Focus is given to the different positioning technologies used in cellular networks, to cellular network native technologies, such as OTDOA / DL-TDOA, ECID, Based Underground Positioning", Proceedings 2020 IEEE 23rd International Fredrik Gunnarsson, Fredrik Gustafsson, "Performance of OTDOA Positioning In addition, a tool for simulating one of the UMTS mobile positioning methods (i.e., OTDOA) in vehicular environment is developed. A Kalman filter-based hybrid Triangulation • OTDOA (Observed Time Difference Of Arrival), WCDMA • AFLT korrekt är PDE:ns (Position Determination Entity) almanac för alla basstationer? Focus is given to the different positioning technologies used in cellular networks, to cellular network native technologies, such as OTDOA / DL-TDOA, ECID, under Fading Channels -- Performance of Enhanced LTE OTDOA Positioning 5G networks -- Green Base Station Placement for Microwave Backhaul Links Kamiar Radnosrati;Gustaf Hendeby;Carsten. Fritsche;Fredrik Gunnarsson;Fredrik Gustafsson;.