This white paper provides an overview of the various LTE Positioning Technologies and Protocols that will enable improved E911 and deliver the accuracy necessary for next-generation LBS and covers the following topics: LTE Positioning Technologies. ECID. OTDOA. A-GNSS. Hybrid A-GNSS and OTDOA. LTE Positioning Protocol (LPP) Control Plane

OTDOA is a positioning feature introduced in rel9 E-UTRA. It's a multilateration method in which the User Equipment 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 based on these time differences and knowledge of the enodeBs locations calculates the UEs' position.

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.

IEEE - Institute of Electrical and Electronics Engineers Inc. 2018, 1-7. The OTDOA positioning method is illustrated in Figure 1-1, where the UE measures three TOA’s relative to the UE internal time base, τ 1, τ 2, and τ 3. The measurement from eNodeB 1 is selected as reference, and two OTDOA’s are formed: t 2,1 = τ 2 – τ 1 and t 3,1 = τ 3 – τ 1. eNB 1 eNB 2 eNB 3 t 3(t 1 t 2(t 1 Measurement0 u ncer tai y t 2 t 1 t 3 Positioning support in LTE was introduced in the second release, Rel. 9, in 2009, and improvements have been made in later releases.

2014-06-06 · Observed Time Difference Of Arrival (OTDOA) Positioning in 3GPP LTE Contents 5 Figure 8-14: Illustration of the Effect of a Repeater Installation in a Network Using OTDOA.

I worked on the thesis "Enhancements in LTE OTDOA Positioning for Multipath Environments" where I developed a novel method for indoor positioning. Instead

With today’s technology, the User Equipment (UE) position is determined based on a combination of cell identity, OTDOA and A-GNSS information from the UE. 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. It utilizes neighbor cells to derive an observed time difference of arrival (ToA) relative to the serving cell. Hu, Sha et al.

23 Oct 2020 Release-15 NR provides support for RAT-independent positioning techniques and Observed Time Difference Of Arrival (OTDOA) on LTE

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. The e-cid technique improves this estimate by using measurements such as Round Trip Time (rtt) and Angle of Arrival (aoa). If many bss are in range, otdoa can give a position from combined Reference Signal Time Diﬀerence (rstd) mea-surements. 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 relative downlink timing. Positioning support in LTE was introduced in the second release, Rel. 9, in 2009, and improvements have been made in later releases.

eNB 1 eNB 2 eNB 3 t 3(t 1 t 2(t 1 Measurement0 u ncer tai y t 2 t 1 t 3 Positioning support in LTE was introduced in the second release, Rel. 9, in 2009, and improvements have been made in later releases. With today’s technology, the User Equipment (UE) position is determined based on a combination of cell identity, OTDOA and A-GNSS information from the UE. 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) The OTDOA positioning method is illustrated in Figure1, where the UE measures three TOA’s relative to the UE internal time base, τ 1, τ 2, and τ 3. The measurement from eNodeB 1 is selected as reference base station, and two OTDOA’s are formed: t 2,1 = τ 2 – τ 1 and t 3,1 = τ 3 –τ 1 terminal-assisted positioning. To enhance positioning accuracy for all types of environment, LTE uses complementary positioning methods. The main location technologies used are Observed Time Difference of Arrival (OTDOA) and Assisted Global Navigation Satellite System (A-GNSS), due to the OTDOA scheme rather than realtime measured signal strength to achieve better positioning performance. Meanwhile, we also exploit the generalization ability of neural networks and evaluate the positioning performance under different inter-site distances.
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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.

In the liter-ature, Medbo et al. obtained in [2] a positioning accuracy better than 20 m for 50% and 63 m for 95% of the cases using the measurements of a channel campaign. 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.
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The OTDOA positioning method is illustrated in Figure1, where the UE measures three TOA’s relative to the UE internal time base, τ 1, τ 2, and τ 3. The measurement from eNodeB 1 is selected as reference base station, and two OTDOA’s are formed: t 2,1 = τ 2 – τ 1 and t 3,1 = τ 3 –τ 1

Positioning reference signals are transmitted on antenna port 6. OTDOA positioning in legacy LTE systems is widely studied in the literature.

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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.

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.

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 the move, in a city, or on the countryside.

OTDOA. A-GNSS. Hybrid A-GNSS and OTDOA. LTE Positioning Protocol (LPP) Control Plane 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. 2020-04-01 ETSI 3GPP TS 37.355 version 16.1.0 Release 16 1 ETSI TS 137 355 V16.1.0 (2020-07) Reference RTS/TSGR-0237355vg10 Keywords 5G,LTE ETSI 650 Route des Lucioles ETSI TS 136 355 V10.0.0 (2011-01) Technical Specification LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); LTE Positioning Protocol (LPP) (3GPP TS 36.355 version 10.0.0 Release 10) ETSI TS 138 305 V15.0.0 (2018-09) 5G; NG Radio Access Network (NG-RAN); Stage 2 functional specification of User Equipment (UE) positioning in NG-RAN (3GPP TS 38.305 version 15.0.0 Release 15) OTDOA (Observed Time Difference Of Arrival) is a positioning feature introduced in rel9 E-UTRA (LTE radio).

IEEE GLOBECOM, Singapore, Dec. 2017. IEEE - Institute of Electrical and Electronics Engineers Inc. 2018, 1-7. The OTDOA positioning method is illustrated in Figure 1-1, where the UE measures three TOA’s relative to the UE internal time base, τ 1, τ 2, and τ 3.