Internet Routing in Space: Prospects and Challenges of the IRIS JCTD

Florio, Michael A.; Fisher, Susan J.; Mittal, S.; Yaghmour, Salim; Jansson, Gerry; Heuser, David; Murray, Paul; Worthen, Andrew P.; Cuevas, Enrique

doi:10.1109/milcom.2007.4455284

Cited by 16 publications

(6 citation statements)

References 3 publications

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“…One is Cisco's Low Orbit Router (CLEO) 15 . The Internet Routing in Space (IRIS) 16 is also remarkable. The main limitation of these efforts is that IP‐based routing assumes topological changes are unpredictable.…”

Section: Related Workmentioning

confidence: 99%

Routing in future space‐terrestrial integrated networks with SATNET‐OSPF

Yan,

Qiao,

et al. 2023

Satell Commun Network

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SummaryConnectivity in satellite networks is governed by the spacecraft nodes' orbital dynamics together with the planet's continuous rotation where ground nodes are located. The resulting time‐dynamic but predictable topology demands the design of specific distributed routing schemes. However, terrestrial Internet routing schemes' maturity, proven scalability, and efficiency shall be leveraged whenever possible to facilitate space‐terrestrial integration while reducing risk and costs. In line with this reflection, we introduce SATNET‐OSPF: a backward‐compatible satellite extension for the widely used Open Shortest Path First routing protocol. The key features of SATNET‐OSPF are (a) accurate routing interface mapping to inter‐satellite links and ground‐to‐satellite links, (b) accelerated link‐up/link‐down event detection adapted to space‐specific wireless technologies, (c) proactive routing and forwarding mechanism to take advantage of predicted link‐down events, and (d) low memory footprint topology model to efficiently propagate the forthcoming space connectivity events via constrained telecommand links. Leveraging existing IPv6 and OSPFv3 open‐source stacks, we implemented SATNET‐OSPF in an actual space router comprising a space‐grade SPARC V8 CPU and a radiation‐hardened FPGA. Furthermore, we present the details of an emulation test bench supporting various configurations with COTS terrestrial OSPF routers that enabled a realistic performance evaluation of the SATNET‐OSPF. Results show that SATNET‐OSPF reduced OSPFv3 routing protocol overhead by up to 31%; shortened the link event detection delay by four orders of magnitude; decreased the routing outage by a factor of 22; and ensured flooding control message generation and forwarding times, as well as routing computing time, satisfy the original requirements (192, 37, and 17 ms, respectively).

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Section: Related Workmentioning

confidence: 99%

Routing in future space‐terrestrial integrated networks with SATNET‐OSPF

Yan,

Qiao,

et al. 2023

Satell Commun Network

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“…As shown in Figure 5, the queue 0 to queue 3 cycles to obtain the output opportunities. But if the scheduling unit is a variable-length packet, and the long packets will get more output bandwidth than the short packets, undermined the fairness between the output queues, and also the algorithm can not provide delay guarantee [8] . …”

Section: B Round Robin Schedulingmentioning

confidence: 99%

FPGA design of a queue management equipment with variable-length packets switching on the satellite onboard switch

Shen

Qiao

Chen

et al. 2012

Proceedings of 2012 2nd International Conference on Computer Science and Network Technology

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In order to solve the problem of the limitation of hardware resource consumption on the satellite onboard switch, this paper implements a kind of queue manager circuit, and introduced the design ideas, working process of each module. Key modules are programmed and realized with Verilog HDL. The results of ModelSim former simulation show that the circuit satisfies the functions of queue management equipment which is of high efficiency in cell switching. Keywordssatellite onboard switch; variable-length packet; queue management equipmentI.

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“…The goal of IRIS is to extend the Internet Protocol (IP) capabilities which have become ubiquitous in terrestrial networks into space. 4 Where communication satellites have traditionally followed a "bent-pipe" strategy (the onorbit asset merely amplifies the signal and bounces it back to a compatible source, effectively unchanged), IRIS equipped satellites will perform both regeneration and processing on-orbit (allowing the use of smaller ground stations and cross-beam, cross-frequency communication among any node in the network). For the purposes of the JCTD, the IRIS payload will be "hosted" aboard the Intelsat 14 satellite, and be connected to three of its 36 MHz transponders (2 Ku-and 1 C-band).…”

Section: A the Iris Productmentioning

confidence: 99%

“…Incidentally, there was a small team at Cisco whose mission was to bring internet routing to space. Following a series of technical successes in satellite on-board processing and regenerative capabilities [1][2][3] ; and building on many years of teamwork and experimentation between the DoD and the private sector, which culminated in the successful demonstration and evaluation of the Cisco Router in Low Earth Orbit (CLEO) ‡ in 2003; 4 they were ready for a large-scale proof-ofconcept. Gen. Cartwright's interest was just the catalyst they needed.…”

Section: Introductionmentioning

confidence: 99%

Enabling Radical Innovation Through Joint Capability Technology Demonstrations (JCTD): The Case of the Internet Routing in Space (IRIS) JCTD

Szajnfarber

Weigel

2009

AIAA SPACE 2009 Conference &Amp; Exposition

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This paper analyzes the case of the Internet Routing in Space (IRIS) Joint Capability Technology Demonstration (JCTD) as a potential model for disruptive innovation in the government space sector. It finds that technologies like IRIS-characterized by a promising yet unproven relatively mature concept, which faces substantial barriers to implementation, but which could benefit from the stability associated with a government patron, creates a strong argument for leveraging the government's position as a relatively coherent, high volume customer, to catalyze disruptive change. The JCTD model, by creating an opportunity to demonstrate the service-oriented utility of the innovation prior to widespread deployment, addresses the common disconnect between technology change and perceived service improvement directly. However, it fails to adequately mitigate the significant administrative overhead (both financial and bureaucratic) of collaborating with the government. Key areas where expectations may need to be adjusted in the future are highlighted through the case. I.

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Internet Routing in Space: Prospects and Challenges of the IRIS JCTD

Cited by 16 publications

References 3 publications

Routing in future space‐terrestrial integrated networks with SATNET‐OSPF

Routing in future space‐terrestrial integrated networks with SATNET‐OSPF

FPGA design of a queue management equipment with variable-length packets switching on the satellite onboard switch

Enabling Radical Innovation Through Joint Capability Technology Demonstrations (JCTD): The Case of the Internet Routing in Space (IRIS) JCTD

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