CBL - Campus del Baix Llobregat

Projecte llegit

Títol: Grafo Espaciotemporal para el encaminamiento en redes de satélites LEO

Estudiants que han llegit aquest projecte:

Director/a: MACHADO SANCHEZ, SERGIO

Departament: ENTEL

Títol: Grafo Espaciotemporal para el encaminamiento en redes de satélites LEO

Data inici oferta: 29-01-2025     Data finalització oferta: 29-09-2025


Estudis d'assignació del projecte:
    DG ENG AERO/SIS TEL
    DG ENG AERO/TELEMÀT
    DG ENG SISTE/TELEMÀT
Tipus: Individual
 
Lloc de realització: EETAC
 
Segon director/a (UPC): OZÓN GÓRRIZ, JAVIER
 
Paraules clau:
LEO, Encaminamiento, Grafos espaciotemporales, NTN
 
Descripció del contingut i pla d'activitats:
Dense Low Earth Orbital (LEO) satellite constellations have
gained popularity in the recent years for their ability
to offer worldwide and low-latency services. These networks can
provide aircraft position monitoring services (ADS-B) and radio
communication system between the controller and the pilot.

In an LEO satellite network, N×M satellites are deployed in N
orbital planes, each of which has M satellites that are uniformly
distributed. The satellite network consists of two types of full
duplex links. Communication in the same plane is realized through
Inter-Satellite Links (ISLs), while different layers of the
satellites communicate through Inter-Orbit Links (IOLs). The
ground gateway, which is covered by a LEO satellite, is connected
to the LEO satellite via a User Data Link (UDL).

One of the main research goal for these networks is to develop
and design efficient routing algorithms and protocols for satellite
network topology, providing a reliable data transmission path for
satellite network users. Satellite networks have the following
properties: predictable high mobility, presence of one or more
central processing units and occurrences of unpredictable
changes. The networks are usually modelled by a set of graphs
that model network topology during time slots where the topology
is, with high probability, stable.

SRv6 is a segment routng paradigm applied to an IPv6 underlay
with a new IPv6 extension header called Segment Routng Header
(SRH). The objective of this thesis is study the application of
SRv6 in LEO Satellite Networks in both data and control plane.
 
Overview (resum en anglès):
This thesis addresses the problem of dynamic data routing in Low Earth Orbit (LEO) satellite constellations, in the context of Non Terrestrial Networks (NTN). These networks, composed of moving satellites, are a growing alternative to traditional terrestrial networks due to their ability to provide global coverage, especially in remote or highly mobile regions. However, their dynamic nature poses significant technical challenges, one of the most relevant being the continuous updating of communication routes. This work proposes the design and implementation of a software tool oriented to the analysis and evaluation of routing algorithms on spatiotemporal models. Based on a review of recent literature and by simulating different scenarios, classical and modern approaches are explored, including predictive planning. The results obtained allow identifying efficient and scalable solutions for the management of data flows in mega-constellations, contributing to the development of advanced satellite communication technologies.

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