Internet of Satellites (IoSat): Analysis of Network Models and Routing Protocol Requirements

Ruiz-de-Azua, Joan A.; Calveras, Anna; Camps, Adriano

doi:10.1109/access.2018.2823983

Cited by 51 publications

(27 citation statements)

References 76 publications

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“…Nevertheless, this kind of technology enables to establish links with large ranges, paying for a low data rate. Its application in satellite-to-satellite communications may be investigated in future researches, which could promote the creation of satellite networks, such as the ones presented in Internet of Satellites (IoSat) paradigm [30].…”

Section: Discussionmentioning

confidence: 99%

Assessing LoRa for Satellite-to-Earth Communications Considering the Impact of Ionospheric Scintillation

et al. 2020

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Since the appearance of 5G, Internet of Things (IoT) has gained an increased interest, with multiple technologies emerging and converging to cover different user needs. One of the biggest challenges today is to have global IoT coverage, ensuring seamless communication with IoT devices placed in rural and even remote areas. Satellite constellations, and in particular CubeSats orbiting in Low Earth Orbit, can provide a solution to these challenges. Out of the technologies available, LoRa (Long Range) has a great potential for implementation in space-to-Earth satellite communications. As the space-to-Earth channel is different with respect to the conventional Earth-to-Earth one, it is important to asses the capabilities of LoRa in this new environment. This paper presents a study of different LoRa device configurations to identify the constrains for each one and determine which one is better for particular mission requirements. Also, the effect of ionospheric scintillation is assessed with a SDR-based (Software-Defined Radio) test setup that evaluates the performance of this technology against with Humprey's ionospheric scintillation model. This phenomena produces deep signal intensity fadings and phase fluctuations in equatorial regions, and mainly phase fluctuations in high latitudes. The obtained metrics are the received power and the packet delivery ratio as a function of the intensity scintillation index, and show the robustness of the LoRa modulation in these new environments.

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Section: Discussionmentioning

confidence: 99%

Assessing LoRa for Satellite-to-Earth Communications Considering the Impact of Ionospheric Scintillation

et al. 2020

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“…This work does not aim at evaluating the consequences of the selected routing protocol, and thus an ideal one has been considered. This protocol, however, may be evaluated with another routing protocol in future research, which may suit the requirements presented in [10]. Note that in this case, the provider identifier has been defined with the last three bytes of the IPv6 address.…”

Section: Simulation Engine and Implementationmentioning

confidence: 99%

“…To overcome this situation, the Internet of Satellites (IoSat) paradigm [10] expands this concept to a multi-hop scenario, and without predefining any satellite system architecture. In this paradigm, satellites decide to deploy sporadic and temporal networks, called Inter-Satellite Networks (ISN).…”

Section: Introductionmentioning

confidence: 99%

A Novel Dissemination Protocol to Deploy Opportunistic Services in Federated Satellite Systems

2020

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Earth Observation applications are demanding higher spatial resolution and shorter revisit times than existing systems, which can be met by ad-hoc constellations of Federated Satellite Systems. These systems are distributed satellite architectures which rely on the collaboration between satellites that share unused resources, such as memory storage, computing capabilities, or downlink opportunities. In the same context, the Internet of Satellites paradigm expands the federation concept to a multi-hop scenario, without predefining a particular satellite system architecture, and deploying temporal satellite networks. The basis of both concepts is the offer of unused satellite resources as services. Therefore, it is necessary that satellites notify their availability to the other satellites that compose the system. This work presents a novel Opportunistic Service Availability Dissemination Protocol, which allows a satellite to publish an available service to be consumed by others. Details of the protocol behavior, and packet formats are presented as part of the protocol definition. The protocol has been verified in a realistic scenario composed of Earth Observation satellites, and the Telesat mega-constellation as network backbone. The achieved results demonstrate the benefits of using a protocol as the proposed one, which in some cases even doubles the amount of data that can be downloaded. To the best of our knowledge, this proposal is the first protocol that allows deploying opportunistic services for Federated Satellite Systems.

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“…Firstly it neglects the earth rotation which makes VN updates within orbit plane cannot support long-term coverage of fixed ground cell. The seam blocking effect [5] and inter-plane phase difference may also introduce connectivity changes to the virtual network [3]. Moreover, the application of conventional VN method requires antenna supporting Earth-fixed mode [9], adding complexity for the satellite platform and causing severe call dropping problems when switches occur.…”

Section: Introductionmentioning

confidence: 99%

Topology Virtualization and Dynamics Shielding Method for LEO Satellite Networks

et al. 2020

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Virtual Node (VN) method is widely adopted to handle satellite network topological dynamics. However, conventional VN method is insufficient when earth rotation and interplane phase difference are considered. An improved VN method based on Celestial Sphere Division is proposed to overcome the defects of the conventional method. An optimized inter-satellite link connecting mode is derived to achieve maximal available links. The optimal VN division solution and addressing scheme are designed to generate a nearly static virtual network and solve the asynchronous switches caused by inter-plane phase difference. Comparison results demonstrate the advantages of proposed method.

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Internet of Satellites (IoSat): Analysis of Network Models and Routing Protocol Requirements

Cited by 51 publications

References 76 publications

Assessing LoRa for Satellite-to-Earth Communications Considering the Impact of Ionospheric Scintillation

Assessing LoRa for Satellite-to-Earth Communications Considering the Impact of Ionospheric Scintillation

A Novel Dissemination Protocol to Deploy Opportunistic Services in Federated Satellite Systems

Topology Virtualization and Dynamics Shielding Method for LEO Satellite Networks

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