Lloyd Wood's talks

Slides from stand-alone presentations by Lloyd Wood, in reverse-chronological order, most recent first.
Some talks are available on video.

Comments on presentations are welcomed at L.Wood@society.surrey.ac.uk.

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Satellite channel losses
Tutorial, Sydney, 1 February 2013.

Satellite channel losses (670K)

Interplanetary Internet: bringing networking into space onboard UoSAT-12 and UK-DMC
video-recorded talk given to the 26th AMSAT-UK International Space Colloquium (via David Johnson), Guildford, 30 July 2011 (abstract, videos). Discusses the Interplanetary Internet.

Interplanetary Internet (1.2M) On video.

Sending software to space: a bundle of fun
invited talk given to University of Cambridge Computer Laboratory (via Jon Crowcroft), 15 July 2010.

Turning HTTP into a standalone layer: decoupling HTTP from TCP
talk given to the TSVAREA meeting, IETF 75, Stockholm, 27 July 2009. Related to our HTTP-DTN work.

Turning HTTP into a standalone layer: decoupling HTTP from TCP (112K)

Taking Cisco to space
Keynote given at Cisco Forum 2009, Zakopane, Poland, 26 March 2009. See also:

Taking Cisco to space (13MB)

Implementing the Interplanetary Internet: differing approaches
Surrey Space Centre Guest lecture (via Tanya Vladimirova), 11am, Tuesday 17 February 2009. Discusses our Interplanetary Internet work.
Also given as a Networks and Services group talk at Electrical Engineering, University College London (via George Pavlou and Richard Clegg - announcement), 4pm, Friday 16 January 2009.

Implementing the Interplanetary Internet: differing approaches (7.7M)

Constellations - orbital types, uses and advantages
Louis Bleriot auditorium, 2pm, 1 October 2008, International Workshop on Space and Satellite Communication 2008 (IWSSC '08), ISAE SupAero campus, Toulouse.
Uses SaVi and ns satellite constellation plot scripts. See also earlier constellations tutorial.

Constellations - orbital types, uses and advantages (5.9M)

Link properties advertisement from modem to router
IETF 72, Dublin, August 2008. Describes our link properties advertisement draft.

Link properties advertisement from modem to router (70K)

Using HTTP for delivery in Delay/Disruption-Tolerant Networks
IETF 71, Philadelphia, March 2008. Describes HTTP-DTN.

Using HTTP for delivery in Delay/Disruption-Tolerant Networks (94K)

ANCP for wireless environments
IETF 69, Chicago, July 2007. Describes our ANCP draft.

ANCP for wireless environments (249K)

Introducing Saratoga: a bundle convergence layer
Lloyd's original design for the workshop commemorative T-shirt. IETF 69, Chicago, July 2007. Describes Saratoga.

Saratoga: a bundle convergence layer (1.8M)

Introducing Saratoga: fast file transfer from space
Delay-Tolerant Networking Research Group workshop, Dublin, May 2007. Describes Saratoga.

Introducing Saratoga (2.4M)

Practical use of the Internet Protocol to command satellites and payloads
Fifth Space Internetworking Workshop, Baltimore, Maryland, 12-13 September 2006. Early thoughts on the Interplanetary Internet.

Practical use of the Internet Protocol to command satellites and payloads (4M)

Data routing and transmission protocols
DARPA Fractionated Spacecraft workshop, Colorado Springs, 3-4 August 2006. With thanks to Will Ivancic.

Note: Pass figures are rounded approximations. It's actually a 12 minute pass * 8140800bps = 715MB, or just over 650MB (a CD-ROM's worth) that can be downloaded each pass once framing overheads are taken into account.

Data routing and transmission protocols (3.9M)

Satellite applications workshop
James Blish? Spindizzy? Cities in flight? Everyone just gave me blank looks. As a guest lecturer, gave a three-hour workshop at the International Space University summer session '06 in Strasbourg, France, 12 July 2006 (via Bill Cowley). Introduced satellite constellations, then let students work on simple exercises in creating constellations using SaVi. Also spoke on slot clouds and on CLEO.

Work done on SaVi for this workshop led to the release of SaVi 1.3 (diary entry). Uses ns satellite constellation plot scripts.

See also later constellations tutorial.

Introduction to satellite constellations (4.1M)
ISU student introduction to SaVi (309K), which became the SaVi user manual.
ISU student exercises with SaVi (66K)
Solutions to ISU student exercises with SaVi (96K)

ISU talk on slot clouds and intersatellite links (494K)
ISU talk on CLEO Cisco router in Low Earth Orbit (9M)

Testing the Cisco router in orbit: thoughts on extending the Internet into space
A talk on Cisco's router in orbit given as part of the local Guest Lecture Series (via Tanya Vladimirova), Surrey Space Centre, Tuesday 15 November 2005.
A commercial mobile router was integrated into the UK-DMC satellite, and has been on orbit with the satellite for over two years. The talk overviews over a year of successful testing of the router, along with the developments in extending the Internet to orbit and building Internet-Protocol-enabled satellite infrastructure that made this router integration possible (and even easy) in the first place. Possible future steps are also discussed.
Testing the Cisco router in orbit slides, presented Tuesday, 15 November 2005. (landscape A4, 8M)
CLEO - Cisco router in Low Earth Orbit
Touring talks on Cisco's router in orbit:

Networking in space - evolving towards an intersatellite Internet
Toured the slot clouds paper and presentation across South Africa at a number of venues, including:

Why satellite networking often isn't really satellite networking, and what can be done about it: moving satellites towards a fuller networking role.
Toured the slot clouds presentation across Australia at a number of venues, including:

CUBIN Melbourne campus flyer, September-October 2003. (100K, portrait A4)

Some topics in satellite networking
technical seminar given as part of the advanced networks colloquium series at the Center for Satellite and Hybrid Communication Networks, University of Maryland.

A personal perspective on areas of satellite networking.

Some topics in satellite networking slides, presented Friday, 28 February 2003 (913K, landscape A4)
campus flyer, week of 24-28 February 2003 (76K, portrait US letter)

A user's view of ns
invited talk given at the VINT/ns retreat, Monterey, California, 1-2 June 1999.

Some thoughts after gaining experience using the network simulator ns.

A user's view of ns slides, presented Tuesday, 1 June 1999 (141K, landscape A4)

A networking perspective on satellite constellations
seminar given at Ecole d'Hiver des Télécommunications de Sophia Antipolis (ECOTEL '98), Antibes, France, 7-11 December 1998.

Overview of my research topic with background.

A networking perspective on satellite constellations slides, presented Thursday, 10 December 1998 (301K, landscape A4)

IP routing and QoS in satellite constellations
networking seminar given while at INRIA Sophia-Antipolis, France, 30 November - 11 December 1998.

A discussion of the utility of network address translation. Detailed further in the IJSC routing issues paper that resulted from my stay at INRIA.

IP routing and QoS in satellite constellations slides, presented Friday, 4 December 1998 (42K, landscape A4)


Lloyd Wood
this page last updated 30 July 2011