Ephemeris Aware Data Delivery Scheduler for NTN IoT

Abstract

The invention relates to an intelligent scheduling service that optimizes data transmission time in IoT devices connected via satellite within a 5G / 6G Non-Terrestrial Network (NTN) infrastructure, using satellite transit information (ephemeris).

Description

1 TARIFF Ephemeris Aware Data Delivery Scheduler for NTN IoT Technical Area 5 The invention relates to IoT connected via satellite within a 5G / 6G Non-Terrestrial Network (NTN) infrastructure. devices that optimize data transmission time by using satellite transit information (ephemeris) It is related to a smart planning service. State of the Art 10 Today, the vast majority of NTN-connected IoT devices have fixed data transmission timing. determining transmission attempts based on periods or simply by looking at the instantaneous signal strength. It is included. The NTN IoT procedures defined under 3GPP Release 17, the device It does not provide a comprehensive mechanism for pre-assessing satellite visibility; This situation leads to high packet loss rates, especially in low-altitude transitions. 15 Fixed-time transmission strategies effectively open satellite transit windows. It is unable to evaluate and select the most suitable option in the presence of multiple satellites. It fails. Transmission attempts increase energy consumption and create unnecessary traffic on the network. This creates a serious problem for remote sensors and tracking devices where battery life is critical. This constitutes an operational problem. These shortcomings result in a reduced transmission success rate and battery 20 This leads to tangible technical problems such as shortened lifespan and inefficient use of network resources. This opens up the issue. Due to the negative aspects described above and the current solutions, the subject is... Due to its shortcomings, it has become necessary to make improvements in the relevant technical field. Purpose of the Invention 25 The invention was created by drawing inspiration from existing situations and overcoming the aforementioned drawbacks. It aims to solve the problem. The main purpose of the invention is to enable satellite transit via an IoT device or a module operating on the network side. By analyzing the information, data transmission is only possible where the probability of connection success is high. The goal is to provide a system that plans according to time periods. 30 Another objective of the invention is to process satellite orbital data and track all transits based on the device's position. The task is to calculate the windows, elevation angles, and durations. Another aim of the invention is to use past channel measurements and atmospheric models to determine each The goal is to estimate the probability of successful transmission and the expected data rate for the window; the highest success rate. By selecting the probability window, the device's radio components are put into sleep mode until then. 35 The aim is to prevent unnecessary energy consumption by holding it; when more than one satellite is visible 2 transmission efficiency is improved by selecting the satellite with the lowest loss and the longest transit window. The goal is to maximize the device's geographic performance by periodically processing updated satellite orbit data. Based on location, all upcoming satellite transit windows in the time period, altitude The goal is to calculate the angles and durations; using past channel measurements and atmospheric models. By using this, we estimate the transmission success probability and expected data rate for each window, aiming for a minimum of 5. The goal is to prevent unnecessary transmission attempts by eliminating windows of probability of success; By selecting the most suitable transmission window based on the evaluations, the device's radio The goal is to save energy by keeping the components in sleep mode until then; geometric By evaluating both channel quality criteria, the most advantageous satellite is determined, and the device is selected accordingly. By eliminating wasted transmission attempts, it significantly extends battery life and improves network performance. The goal is to increase its efficiency. Figures that will help understand the invention. Figure 1 shows the general architecture of the system that is the subject of the invention. Explanation of Part References 101. Ephemeris Processing Unit 102. Link Probability Estimator 103. Optimal Scheduling Planner 104. Multiple Satellite Selection Unit 20 Detailed Description of the Invention This detailed description outlines the preferred configurations of the invention, not only for better understanding the subject matter. This is intended to facilitate understanding and will not create any limiting effects. The invention relates to 5G / 6G Non- In terrestrial network (NTN) infrastructure, IoT devices connected via satellite use satellite 25 Intelligent scheduling that optimizes data transmission time using transit information (ephemeris). It is used for service. The system only connects the IoT device where the probability of connection success is high. It enables the device to send data in time intervals; during this process, it eliminates unnecessary transmission. By preventing unnecessary testing, energy consumption is minimized. The invention is particularly useful for battery-powered devices. Agricultural sensors that send periodic data and are deployed in remote geographical areas provide environmental 30 energy monitoring stations, logistics tracking devices and emergency communication terminals Failure in limited IoT applications during periods of insufficient satellite line of sight. It is designed to eliminate transmission interference. The elements and functions used in the system described in the invention are as follows: The Ephemeris Processing Unit (101) processes satellite orbit data to determine the line of sight and transit 35 It calculates the windows. 3 The Link Probability Estimator (102) predicts successful transmission based on channel conditions and satellite geometry. It estimates the probability. Optimal Scheduling Planner (103), the time with the highest probability of connection. It defines the windows and manages the device's sleep cycle. Multiple Satellite Selection Unit (104), lowest loss 5 when multiple satellite passes are available and selects the satellite with the longest window. The system in question periodically updates the current satellite data via the Ephemeris Processing Unit (101). It processes orbital data and, based on the device's geographical location, predicts all of the upcoming time periods. Calculates satellite transit windows, elevation angles, and durations. Link Probability The estimator (102) uses historical channel measurements and atmospheric models to estimate 10 for each window. It estimates the probability of transmission success and the expected data rate; thus, it can detect low probability of failure. Unnecessary transmission attempts are prevented by eliminating windows. Optimal Scheduling Planner (103) selects the most suitable transmission window based on the evaluations and the device's radio It saves energy by keeping its components in sleep mode until then. Multiple satellites. In terms of visibility, the Multiple Satellite Selection Unit (104), geometric and channel 15 By evaluating quality criteria together, it determines the most advantageous satellite; thus, the device is not wasted. By eliminating outgoing transmission attempts, it significantly extends battery life and improves network performance. It increases efficiency.

Claims

4 REQUESTS 1. NTN is an ephemeris-aware data delivery scheduler for IoT, and its features include: calculating viewing angles and transition windows by processing satellite orbit data ephemeris processing unit (101), Link 5 estimates the probability of successful transmission based on channel conditions and satellite geometry. probability estimator (102), Identifies the time windows with the highest probability of connection and puts the device to sleep. optimal scheduling planner (103) that manages the cycle, When multiple satellite passes are available, it has the lowest loss and the longest window. Multiple satellite selection unit (104) 10 It includes.

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