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PDF Time of Flight Estimation for Radio Network Positioning
3GPP (the Third Generation Partnership Project) defines OTDOA by using the Positioning Reference Signal (PRS). In the adopted Observed Time Difference of Arrival (OTDOA) algorithm the base stations transmit so-called Positioning Reference Signals (PRS). The User Equipment (UE) detects the time difference of arrival of the PRS for pairs of base stations. 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. (OTDOA) is a downlink based positioning method de-scribed 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) rela-tive to the serving cell.
It is then only when the OTDOA method is the only successful method that the rest of the method 100 is performed. The primary reason for this is that a failure of A-GPS positioning and a success of OTDOA positioning indicates an indoor UE 12 location. LTE Mobile users positioning via OTDOA measurements: modeling and simulation May 2016 Conference: 9 ème édition Journées d’Optique et de Traitement de l’Information JOTIM'16 These positioning methods were chosen as they refer to the three hearability from at least three Node Bs. A simulation model for OTDOA based on the path loss model has been developed and is used to simulate data with fixed input parameters and the RSCP of Node Bs from field drive test. Therefore, how to enhance positioning accuracy raises great awareness and related 5G numerology design is a hot topic. Considering the determinants such as ue complexity, standardization and net-work impacts, 3GPP Release 14 [2] puts the focus on enhancements of Observed Time Di↵erence of Arrival (OTDoA) positioning. OTDoA is a ue assisted mul- Fig. 1. Illustration of the OTDOA based positioning scheme.
Kamiar Radnosrati - Google Scholar
An error analysis of OTDOA is reported in [7]. We investigate opportunities for device tracking in NB-IoT systems using Observed Time Difference of Arrival (OTDOA) measurements.
Improving the Performance of OTDOA based Positioning in
LTE Mobile users positioning via OTDOA measurements: modeling and simulation May 2016 Conference: 9 ème édition Journées d’Optique et de Traitement de l’Information JOTIM'16 These positioning methods were chosen as they refer to the three hearability from at least three Node Bs. A simulation model for OTDOA based on the path loss model has been developed and is used to simulate data with fixed input parameters and the RSCP of Node Bs from field drive test. Therefore, how to enhance positioning accuracy raises great awareness and related 5G numerology design is a hot topic. Considering the determinants such as ue complexity, standardization and net-work impacts, 3GPP Release 14 [2] puts the focus on enhancements of Observed Time Di↵erence of Arrival (OTDoA) positioning. OTDoA is a ue assisted mul- Fig. 1.
ECID. OTDOA. A-GNSS. Hybrid A-GNSS and OTDOA.
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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. I wrote about the 5G Americas white paper titled, "The 5G Evolution: 3GPP Releases 16-17" highlighting new features in 5G that will define the next phase of 5G network deployments across the globe. The following is from that whitepaper: Release-15 NR provides support for RAT-independent positioning techniques and Observed Time Difference Of Arrival (OTDOA) on LTE carriers.
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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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.
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MATLAB TDOA - Essays.se
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. Article Abstract. Toggle navigation. Home About ION wcdma (with ipdl, ta-ipdl, otdoa-pe) hybrid positioning using data fusion —not as accurate as a-gps in most —reduction of handset hardware situations (50 m) complexity —need to be visible to at least three base hybrid toa/tdoa/aoa can improve stations accuracy —requires changes in the base station —gps + cdma can improve accuracy and 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. .
TDOA - Uppsatser.se
If many bss are in range, otdoa can give a position from combined Reference Signal … 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 2020-10-23 Hu, Sha et al. "Improving the Performance of OTDOA based Positioning in NB-IoT Systems". IEEE GLOBECOM, Singapore, Dec. 2017. IEEE - Institute of Electrical and Electronics Engineers Inc. 2018, 1-7.
(OTDOA) is a downlink based positioning method de-scribed 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) rela-tive to the serving cell. Depending on which positioning mode is configured, either UE based or UE assisted, the Article Abstract. Toggle navigation. Home About ION 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. 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.