Register Now for DTN Research Webinar

IPNSIG Presents: Recent Firsts in DTN Research—a webinar presentation by Dr. Lara Suzuki (Google)

You are invited to a Zoom webinar.

When: Dec 10, 2021 02:00 PM Eastern Time (US and Canada)

You must register in advance for this webinar: You will receive a confirming email with a link to the webinar.

More information about the presentation content is available at:

Speaker and moderator bios are available at:

Hope to see you there!

DTN Research Webinar Presenter and Moderator Bios

Webinar coming soon: DTN Research Summary. Registration site will be published soon!

IPNSIG Presents: Recent Firsts in DTN Research—a webinar presentation by Dr. Lara Suzuki (Google)

Date: December 10, 2021

Time: 2:00 p.m. – 3:00 p.m. EST

Your Presenter: Dr. Lara Suzuki

Professor Dr Larissa Suzuki (EUR ING BSc MPhil PhD CEng FRSA FIET AFHEA IntPE) is a computer scientist, engineer, inventor, entrepreneur, and philanthropist. Her career includes over 16 years working in engineering. She is currently the Data and AI Practice Lead at Google Cloud, and works with Google internet evangelist Dr Vint Cerf at Nasa with ESA and Jaxa engineers, and academics developing the Interplanetary Internet. 

Her career in engineering started at the age of 16. At the age of 21 I founded her first business, and at age of 22 she became a University Lecturer teaching in BSc in Computer Science and in MBA programs. Dr Suzuki has contributed to the advancement of many fields of engineering, including smart cities, AI and Machine Learning, Interplanetary Internet, Emerging Technologies (e.g. Mixed Reality, IoT), and computing applied to medicine (cancer diagnosis), and operations research.

Her previous career experiences includes senior appointments such as Director of Product Management at Oracle, Head of Data Science at Founders4Schools/Workfinder, Senior Project Manager at London Government, TfL and other work experiences at European Commission, ARUP, IBM, University Labs (UCL, MIT, Lancaster, USP), Smar, Bank of Brazil.

Her continuing academic work is as Associate Professor and guest Lecturer at University College London, University of Quebec and University of Oxford. 

Dr Suzuki has received numerous awards, grants and recognitions from the Royal Academy of Engineering, MIT, Intel, Google, ACM, IET, Heidelberg Laureate Forum Foundation, Microsoft Research, EPSRC, among many others for my contributions to industry and international science.

She’s published several research papers in academic journals, books and conferences, is a frequent Keynote, conference and panel speaker. She currently serves as a member of the Search and Nominations committee of the Queen Elizabeth Prize for Engineering, and the Diversity and Inclusion Committee of the Royal Academy of Engineering.

Your Moderator: Vint Cerf

Vint is Vice President and Chief Internet Evangelist
with Google

At Google, Vint Cerf contributes to global policy and business development and continued spread of the Internet. Widely known as one of the “Fathers of the Internet,” Cerf is the co-designer of the TCP/IP protocols and the architecture of the Internet. He has served in executive positions at the Internet Society, the Internet Corporation for Assigned Names and Numbers, the American Registry for Internet Numbers, MCI, the Corporation for National Research Initiatives and the Defense Advanced Research Projects Agency and on the faculty of Stanford University. Vint Cerf sat on the US National Science Board and is a Visiting Scientist at the Jet Propulsion Laboratory. Cerf is a Foreign Member of the Royal Society and Swedish Academy of Engineering, Fellow of the IEEE, ACM, American Association for the advancement of Science, American Academy of Arts and Sciences, British Computer Society, Worshipful Companies of Information Technologists and Stationers and is a member of the National Academies of Engineering and Science. Cerf is a recipient of numerous awards and commendations in connection with his work on the Internet, including the US Presidential Medal of Freedom, US National Medal of Technology, the Queen Elizabeth Prize for Engineering, the Prince of Asturias Award, the Japan Prize, the Charles Stark Draper award, the ACM Turing Award, the Legion d’Honneur and 29 honorary degrees.

Webinar coming soon: DTN Research Summary

IPNSIG Presents: Recent Firsts in DTN Research—a webinar presentation by Dr. Lara Suzuki (Google)

Date: December 10, 2021

Time: 2:00 p.m. – 3:00 p.m. EST

Admission is free, but you must register for the event. An announcement will be going up soon on with a link to the registration site.

Vint Cerf will introduce Dr. Suzuki and moderate a short question and answer session following the presentation.

IPNSIG member Dr. Lara Suzuki has been working on a number of firsts in Delay & Disruption Tolerant Networking (DTN). These include:

  • First time connecting multiple clouds via DTN
  • First time connecting clouds and loT devices and microcontrollers using multiple protocol implementations (MOTT, uD3TN, ION)
  • First time streaming video via multicasting over DTN
  • First time using DTN with Kubernetes Engine Service
  • First time performing federated queries over DTN on multiple clouds

Lara will be discussing the research above and also providing 14 Functioning Demos in a multi-cloud and multi-protocol environment. These demos include examples of AI and Machine Learning on multiple distributions of DTN.

In addition to obvious applications to space exploration, this work will also be foundational in scaling terrestrial implementations of DTN networks that will allow realistic testing of network management and network security functions.

Speaker and moderator bios will be published soon on

IPNSIG Website Refreshed

IPNSIG.ORG has a new look and feel. We are on a new hosting platform running the latest software versions, so we hope to experience significantly better stability and availability.

We hope you like the new look and feel. Please bear with us as we continue to make incremental improvements over the next few weeks.

November Newsletter

The IETF DTN Working group is meeting next Friday, 11 November, at 0700-0900 EDT.

Remote registration for a single day is $125 ($50 for students). You may register here.

The agenda for this meeting is:

  • Admin, Chairs, 10 mins.
  • Charter and Milestone Overview and Discussion, 20 mins.
    • DTN Chairs
  • BPv7 Types Registry Extension, 15 mins.
    • Brian Sipos
  • BPv7 Wireshark Dissector Review and Demonstration, 10 mins
    • Brian Sipos
  • BPSec COSE Security Context Status, 10mins
    • Brian Sipos
  • BPSec Policy Best Practices and Demonstration, 15 mins
    • Sarah Heiner
  • Asynchronous Management Architecture Updates, 15 mins
    • Emery Annis
  • Challenged Network Management Tooling, 10 mins
    • Sarah Helble
  • Any other business / Open Mic, 15 mins

This meeting (and upcoming ones) are our opportunity to express the requirements / needs of the space community to IETF as they evolve the commercial DTN standards. The Consultative Committee for Space Data Systems (CCSDS) often seeks to profile the commercial standards for use in space and strives for interoperability with them. Ensuring that the IETF standards can accommodate the needs of the space community is critical to advancing the status and interoperability of the systems that will form the Solar System Internet (SSI).

October Newsletter

IPNSIG Library Announcement 

Ginny Spicer, IPNSIG Technical Documentation Working Group Member

Part of the IPNSIG’s mission to expand networking to interplanetary space is to promote DTN technology and facilitate its maturation. It is this mission that has led the IPNSIG Technical Documentation Working Group (TDWG) to create a technical documentation library. We are pleased to announce the IPNSIG Library and share it with you for perusal, research, and inspiration. I recently spoke to two of our IPNSIG board members, Vint Cerf and Scott Burleigh (Technical Documentation Working Group Lead), about the reasoning behind this library and the vision for its future.

[Video embed below]

Visit the IPNSIG Library here: 

This project advances access to relevant technical information for everyone involved in interplanetary or terrestrial DTN. We have gathered references to journal articles, conference papers, video presentations, books, blog posts, and more. From ant colony optimization to the ZebraNet, resources are searchable, organized, tagged, and given proper attribution. 

The library is hosted in Zotero™, which enables you to easily locate items of interest, generate citations, and copy sections of the library to your own reference manager. 

The IPNSIG Library currently has over 200 items related to the interplanetary networking initiative, the Solar System Internet, DTN security, and DTN protocol implementations. Resources include complete descriptions, language codes, and tags to help you find useful and relevant information easily. 

As new DTN research and implementations occur, we will add references to their documentation to the library so that everyone can benefit. If you find a new resource to add to the IPNSIG Library, please email the resource link to

Come browse through the library to learn about the future of the Interplanetary Internet and some of the incredible uses of DTN. 

September Newsletter

Dear IPNSIG members,

Since I assumed chair last year, many vigorous activities have been undertaken at IPNSIG, propelling our efforts even further to expand networking to space.
Just one year ago, I felt a need to lay out a narrative and some strategic efforts to be assessed toward establishing an interplanetary network. That was high on my agenda. After several intense discussions at the Strategy Working Group and at our engaging workshop held February 2021, IPNSIG has successfully published a strategic roadmap in the form of a Strategy Report .
Today, the report has been shared with the leaderships of the space agencies and private entities across the globe. IPNSIG has also offered to participate in an assembly to further refine the concept of the strategy together, working to shape the future of an interplanetary network.
In light of these exciting events, I am delighted to share that the board recently adopted a new VISION and MISSION STATEMENT to articulate our goals and roles in the development of our endeavors.

The other good news is that we are progressing to become the first space chapter at ISOC and at the same time, the plan is for IPNSIG to file as a U.S. 501(c)3 non-profit organization operating in the State of California.
Your engagement with our mission continues to make a difference. Your passion, expertise, and contributions are all the impetus that brings us closer to realizing our new vision.
So please, let us know of your interests, comments or feedback by sending email to We will always be happy to address them.
Your voice makes a difference. Let’s make our journey even more exciting.
Yosuke Kaneko

2021 STINT Workshops Coming Soon

This year’s Space Terrestrial Internetworking (STINT) Workshops commence next week (26-July through 29-July). This year’s STINT has an especially full agenda of papers and presentations, including a keynote address on the State of the Solar System Internet by IPNSIG Board Member and Internet Pioneer Vint Cerf. For more information, see the STINT 2021 Home Page at The full Workshop schedule is available here.

June/July Newsletter

Creating a high-speed backbone for the Interplanetary Internet
Earlier this year, we were truly amazed watching the high-quality videos coming from the Mars’ Perseverance mission descend on Mars. NASA’s Deep Space Network (DSN) is the current interplanetary communications backbone that made watching these videos possible. The DSN relies on radio frequency signals and a global ground network to provide communications from Earth to the upmost distant spacecrafts (Voyager twins), in addition to the many missions being carried out across our solar system. The Deep Space Network is completed by NASA’s Near Earth Network, a series of ground stations providing support to spacecrafts closer to Earth (all the way to the Moon) and the NASA Space network, a satellite relay service that provides up to 24×7 coverage of spacecrafts near Earth such as the International Space Station (ISS), and supporting mission launches as they transit the low Earth orbit. The European Space Agency’s Estrack network also provides for deep space and near Earth capabilities, Russia, China, Japan and India also have space networks with at least certain coverage of near and deep space.

Surprisingly, the DSN was formally created in the 70’s, much before Earth’s network of networks, the Internet. At the time, data communications were not part of the day to day communications paradigms so networks were very much focused on physical (radio) and link layer (e.g. error correction and link establishment/maintenance). Because of it, the DSN as well as the space and near Earth networks have gone through major upgrades to enhance communications to adapt to digital/data communications as well as improving link and physical layer capabilities. The DSN, being a limited resource (e.g. there is only one 70 m Antenna per coverage area), is slowly becoming a bottleneck as the number of missions (and data transmission requirements) increase. It has also come to a point in which these systems have stressed out the physical characteristics of the microwave links (and coding schemes) to get the highest throughput, i.e. several Megabit per second (106 bit/sec) at Mars. This is just enough to transmit one stream of video at high definition. Now, compare this to having Gigabit (109 bit/sec) at home, and you get an idea of the data rate requirements for a settlement on the Moon or Mars. A new high-speed backbone is needed for the Interplanetary Internet!


Figure. Downlink data rate evolution, from JPL/DESCANSO Deep Space Communications Book.

NASA, other space agencies and the private sector have been working on the next steps in high-speed space communications. A major change that requires moving up from radio frequencies (with wavelengths in the centimeter order) to optical frequencies (tens to hundreds of nanometer). This would allow for higher throughput, in the order of hundreds of megabit per seconds to Mars. Many experiments and demonstrations are being built to elevate the technical readiness of the high-speed space optical network.
• In 2013, NASA successfully launched the Lunar Laser Communications Demonstration (LLCD) which was capable of achieving 622 Megabit per second (Mbps) from the Moon.

• Later this year (2021), NASA will launch the Laser Communications Relay Demonstration (LCRD), a demonstration of a two way laser relay system, critical in creating a near-Earth space optical network. This is the first stepping stone in augmenting the existing radio-based TDRS (Tracking Data Relay System). The LCRD will also make use of the new Optical Ground Stations (OGS-1 in California and OGS-2 in Hawaii). Note the European Space Agency (ESA) have already made 1-way optical relay possible with their European Data Relay System (EDRS) and the Japan Aerospace Exploration Agency (JAXA) have completed direct link checkout with optical ground systems in preparation to provide 2-way optical inter-satellite relay services using the Japanese Data Relay System (JDRS).
• Also in 2021, NASA will launch the Terabyte Infrared Delivery (TBIRD) demonstration in low-Earth orbit that plans, via an optical link on a CubeSat, to achieve burst download speeds of 200 Gigabit per second, allowing for downloading large amount of data per day (Terabytes, hence the name).

• In 2022, NASA plans to deliver the Integrated LCRD Low Earth Orbit User Modem and Amplifier Terminal (ILLUMA-T) aboard the International Space Station (ISS), becoming the first experimental space user of the LCRD, with the goal of achieving bit rates up to 1.2 Gigabit per second to Earth, increasing the bandwidth for research and development experiments’ data.
• Launched in 2022, JPL’s Deep Space Optical Communications (DSOC) payload will travel onboard the Psyche mission spacecraft. Starting its first year of travel (the spacecraft is expected to reach the 16 Psyche asteroid in 2026), the experiment will test optical communications over extreme distances, obtaining valuable information about pointing challenges, among others. For the ground segment, two existing telescopes are enhanced including a new Ground Laser transmitter and a receiver respectively. The goal is to achieve 10 to 100 more throughput than conventional (RF) systems using comparable size and power.
These experiments and demonstrations will lead to the use of the Orion Optical Communications System (known as O2O or Optical to Orion) in the Artemis II mission aimed for 2023. The goal of the optical communications system is to be able to support throughput over 600 Megabit per second, enough to livestream ultra high-definition (also known as 4k) video from the Moon.
As the above lines indicate, there is great research, development, experimentation and plans going on for creating a high-speed space communications backbone. And there is more to it. Enabling a high-speed network also requires better performance at the networking level. Existing Delay Tolerant Networking (DTN) implementations may not be fast-enough in processing and routing/forwarding bundles (the data), potentially becoming a bottleneck. There are already signs of this issue in the DTN implementation on the International Space Station (ISS). Researchers at NASA Glenn Research Center are working on a High-speed DTN architecture to optimize spacecraft hardware design to better accommodate for high-speed (DTN) networking.

From our group, the InterPlanetary Networking Special Interest Group (IPNSIG), we encourage you to continue gaining interest in space networking, and to contribute to our mission of realizing a functional and scalable system of interplanetary data communications: The High-Speed Interplanetary Internet!

Dr. Alberto Montilla
IPNSIG Board Member
Spatiam Corporation Founding Board Member