Master-Seminar Connected and Mobile Systems

Satellite networks in Low Earth Orbit (LEO), due to their proximity to Earth offer faster data transmission and reduced latency compared to traditional satellites. With the deployment of mega-constellations (e.g: SpaceX's Starlink, Amazon's Kuiper, etc.), the LEO plays a pivotal role in global communication and navigation. With a few thousand satellites in these mega-constellations, efficient routing of data is essential in order to deliver reduced latency.

Your task is to firstly provide an overview of satellite communication. Then discuss in detail at least three LEO routing strategies of your choice. Finally conclude by presenting performance of LEO in comparison with traditional satellites.

• LEO Satellite Networking Relaunched: Survey and Current Research Challenges
• Delay is Not an Option: Low Latency Routing in Space
• Network Characteristics of LEO Satellite Constellations: A Starlink-Based Measurement from End Users

Multi-Connectivity, also called Multi-Pathing, describes the approach of using multiple available communication paths to improve data transmissions. This technique can be employed on different layers of the network stack to utilize the path diversity to achieve different means. Using Multi-Connectivity on the network layer, which is referred to as Multi-Path routing, allows for data to be transferred over multiple disjoint paths, i.e. paths that may not share a single intermediate node except for the source and destination.

• A Survey on Internet Multipath Routing and Provisioning
• Multi-Connectivity as an Enabler for Reliable Low Latency Communications—An Overview

Collective Perception (CP) for vehicular networks will be the key technology for improving traffic safety in the future. With CP, vehicles exchange object data about locally perceived objects to enhance awareness of the traffic situation. However, the communication resources are limited and hence, object data to be transmitted needs to be selected with care.

Your task will be to review literature for different object selection strategies, describe their concepts, well as identify drawbacks and compare the approaches.

• Intelligent Transport Systems (ITS); Vehicular Communications; Basic Set of Applications; Analysis of the Collective Perception Service (CPS); Release 2
• Intelligent Transport System (ITS); Vehicular Communications; Basic Set of Applications; Collective Perception Service; Release 2

Data Plane Programming is the practice of directly programming the packet processing logic within network devices, allowing greater flexibility in handling and forwarding data. It enables dynamic adaptation of network functions by leveraging specialized languages, such as P4, to define the behavior of the data plane in switches and routers.

Introduce the concept of Data Plane Programming. Begin with the motivation for Data Plane Programming, discussing the limitations of traditional networking and the advantages of making the data plane programmable. Include an overview of the basic principles of Data Plane Programming, explaining how it relates to Software-Defined Networking. Discuss the role of the P4 language and examine the architecture and platforms that support Data Plane Programming, such as programmable switches, hardware, and simulation tools. Finally, address current research questions and challenges, including security, performance optimization, and scalability issues.

• A survey on data plane programming with P4: Fundamentals, advances, and applied research
• A Survey on Data Plane Flexibility and Programmability in Software-Defined Networking