Internet of Space: Communication Systems for Future Space-based Internet Services

posted May 10, 2019, 1:28 AM by Paulo Mendes   [ updated May 10, 2019, 1:33 AM ]

Keynote Speech at European Wireless 2019

Since the first commercial satellite, launched in 1965, satellite communications have evolved to provide low latency services based on constellations of small LEO satellites, and high data rate services based on High Throughput GEO Satellites (HTS) capable of managing flexible multiple ‘spot beams’ covering desirable service areas. Based on HTS and LEO constellations, the next step to boost the usage of satellite networks passes by its integration with terrestrial cellular networks, as 5G, and other non-terrestrial networks, such as high altitude pseudo-satellites. However, to achieve a full Internet of Space, there is the need to define a unifying networking framework able to sustain the specific properties of dynamic scenarios, which include heterogeneous physical layers, frequent changes in network topology, high propagation delays, and intermittent connectivity.

You can get the presentation slide from HERE.

Wireless Networking for Autonomous Mobile Smart Cameras

posted Mar 26, 2019, 12:45 AM by Paulo Mendes   [ updated Mar 26, 2019, 12:47 AM ]

Godwin Asaamoning (NEMPS PhD student 2017) presented on NETSYS 2019 conference a poster about his PhD work on the topic of wireless communications for autonomous drones. 

More precisely the work aims to investigate reliable, low latency wireless communications able to support the autonomous operation of a self-organized set of drones, while still providing enough data rate to allow video collected from each drone to be streamed to a ground station.

Information-centric Routing for Opportunistic Wireless Networks at ACM ICN 2018

posted Nov 22, 2018, 7:20 AM by Paulo Mendes   [ updated Nov 22, 2018, 7:23 AM ]

Did you like the specification of the DABBER protocol has published in the IETF draft draft-mendes-icnrg-dabber-01 (IRTF ICN Research group)?

Last September we took DABBER to Boston and presented a poster at the ACM ICN 2018 conference.

ACM ICN 2018
In this poster we described DABBER  key contribution: supports communication in opportunistic wireless environments by relying on data reachability metrics that take into consideration availability and centrality of adjacent nodes, as well as the availability of different data sources. The poster provides an overview to the DABBER architecture, and of the available open-source implementation.

Information-centric Routing for Opportunistic Wireless Networks

posted Aug 29, 2018, 3:24 AM by Paulo Mendes   [ updated Mar 26, 2019, 12:53 AM ]

DABBER aims to extend the reach of Name-Data Networking (NDN) to opportunistic wireless networks, while: i) avoid flooding the network with Interest packets, which is a major requirement of opportunistic networks; ii) selective forwarding of Interest packets based on data reachability information, and context awareness (neighborhood and node itself).

The motivation behind DABBER is the lack of forwarding/routing proposals for NDN over opportunistic wireless networks. There are an extensive number of (forwarding) proposals for opportunistic wireless networks (e.g. dLife, Scorp), and an initial set of routing proposals for wired NDN networks (e.g. OSPFN, NSLR). But NO routing protocol to support NDN communications in wireless networks.

Basic differences towards version 00 are:
    • The FIB ranking operation was removed in other to be compatible with the current NFD implementation, which does not allow any operation to the done at the FIB level.
    • Better explanation of the relationship towards NSLR: Although DABBER specification allows an easier integration with NDN access networks based on NSLR, its operation is completely independent of NSLR.
    • Revised explanation of the Multiple Path Computation based on adjustments done during the implementation.

Edge Computing and Communications

posted Aug 29, 2018, 3:01 AM by Paulo Mendes   [ updated Aug 29, 2018, 3:10 AM ]

Participation together with George Polyzos (AUEB, Greece), Dirk Kutscher (Huawei, Germany), and Jussi Kangasharju (University of Helsinki, Finland).

Insights about the deployment of edge computing namely about where to place the edge in wireless networks, and how to orchestrate a highly distributed multi-tenant system. Special attention was given to the deployment of distributed systems of edge nodes co-located with existing cellular transmitters, by leveraging their existing fiber optic cables or using wireless beamforming. A simple impact study was provided from a power perspective, showing that the "network edge" may account for only 1% of the total aggregated computational capacity.

Named Data Emergency Network Services

posted Aug 29, 2018, 2:44 AM by Paulo Mendes   [ updated Aug 29, 2018, 2:51 AM ]

Emergency services are vulnerable to network fragmentation. This situation can be improved by allowing citizens to send messages to emergency centers, and to other nearby citizens using secure, reliable wireless services, able to operate even with intermittent connectivity.

To achieve such a goal, we propose to leverage the Named-Data Networking (NDN) framework with a messaging system based on a new application, called Oi!, which uses two methods of push communication based on a new branch of NDN Android, called NDN-OPP that supports intermittent wireless networking.

NDN-OPP allows NDN to operate in opportunistic wireless networks, based on a new type of face, called Opportunistic Face, OPPFace. OPPFaces are based on a system of queues able of holding packets while wireless faces are down. OPPFaces can be implemented by using any direct wireless communication, being the current version based on Wi-Fi Direct.

To support emergency communications based on NDN, Oi! makes use of two push communication mechanisms implemented in NDNOPP to allow message exchange within the same wireless network: i) push based on special data packets (pData); ii) push based on a special Interest packet (LLI - Long Lived Interest).

Research funded by the European Union (EU) Horizon 2020 program. Grant No. 645124 (UMOBILE: Universal, mobile-centric and opportunistic communications architecture).

NDN-OPP and Oi! -- Code and APPs available

posted Mar 2, 2018, 7:23 AM by Paulo Mendes   [ updated Mar 2, 2018, 7:23 AM ]

Version 1.0 of NDN-OPP and V1.0 of Oi! are available
Work is being done in the EU project UMOBILE.

Cover art

extends NFD for operation in wireless multi-hop networks with intermittent connectivity. V1.0 provides direct wireless communication based on Wi-Fi direct (new Face) and is able of exploiting available open wireless access points.

Code on Github
Technical Report on COPELABS repository.
Application on Google Play:

Cover art

is a short message application that works on top of NDN Android and NDN-OPP. In the latter case Oi! makes usage of the push communication models implemented in NDN-OPP that allows messages to be forwarded to local authorities and pushed to nearby users (in emergency cases).

Code on Github
Technical Report on COPELABS repository
Application on Google Play

Submission of new Internet Draft to ICNRG

posted Feb 23, 2018, 2:50 AM by Paulo Mendes   [ updated Feb 23, 2018, 2:55 AM ]

IETF               UMOBILE logo

The European UMOBILE project is working on methods to extend NDN towards opportunistic wireless networks. In this context, COPELABS has been implementing an NFD extension, called NDN-OPP, which supports NDN multi-hop wireless communication: NDN-OPP V1.0 for Android does broadcast of Interest packets over a Wi-Fi direct network.

In order to reduce resource consumption in a NDN multi-hop wireless networks, COPELABS, SENCEPTION and ATHENA have created the DABBER routing protocol, which allows selective forwarding of Interest packets based on the local announcement of name prefixes + node awareness about the properties of neighbour nodes (centrality and availability). DABBER aims to operate on a point-to-point wireless network (e.g. Wi-Fi direct, DTN) as well as on a broadcast network (e.g. ah-hoc Wi-Fi).

DABBER was submitted to IETF, and will be presented in the ICNRG meeting in London (Mar 17th - Mar 23rd).

Further information on IETF Datatracker.

Senception at the European Business Awards 2017/2018

posted Feb 2, 2018, 2:22 AM by Paulo Mendes   [ updated Feb 2, 2018, 2:22 AM ]

European Business Awards - 'Ones to Watch' 2017/2018

Vote for Senception at the European Business Awards 2017/2018, Public European Champion

Senception is one of the 'One to Watch' finalists in the European Business Awards 2017/2018.

To vote, go to…/23303 and type your e-mail, followed by a click on the vote button.

You will get a voting e-mail from the EBA voting system. Please click on that link to complete your vote.

Thank you for your support!

Participation in the ACM Information-Centric Networking 2017

posted Oct 10, 2017, 8:03 AM by Paulo Mendes   [ updated Oct 10, 2017, 8:05 AM ]

COPELABS and Senception participated in the ACM ICN 2017 Conference, which took place in Berlin from Sept 26th to Sept 28th.

On the first day, COPELABS and Senception provided a tutorial about the H2020 UMOBILE project, together with University of Cambridge (UK), AFA (Italy) and Athena (Greece). COPELABS provided a talk about NDN operation in Opportunistic Wireless Networks and Senception a talk about Social-aware metrics derived from contextualization. Senception also provided a demo of the PerSense Mobile Light tool.

On the second day, COPELABS participated in the poster and session section with a poster about Now@ - A Content Sharing Application over NDN, and a demo of NDN-OPP - Named-Data Networking in Opportunistic Networks.

Now@ and NDN-Opp are being developed in the context of the H2020 UMOBILE project.

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