Software Defined Naval Network for Satellite Communications - PowerPoint Presentation

Slide1

Software Defined Naval Network for Satellite Communications (SDN-SAT)

Sobhan

Nazari

,

Pengyuan

Du,

Mario

Gerla

,

Ceilidh

Hoffmann,

Jae H.

Kim,

Antonio

Caponet

Department

of Computer Science, UCLA,

USASlide2

OutlineIntroductionContributionSDN-SAT Framework

Performance Evaluation

Conclusion

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OutlineIntroductionContributionSDN-SAT Framework

Performance Evaluation

Conclusion

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IntroductionNaval Surface Fleet CommunicationsShip-to-ship, ship-to-shore, ship-to-aircraftMilitary or commercial satellite systemsGEOLEO

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IntroductionCurrent Shipboard NetworkClients are served by a predefined satellite systemConfiguration is fixed at service routers

Capacity is

underutilized

Dynamic reconfiguration is limited (manual)

Ship

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ContributionSoftware-Defined Networking framework for naval SATellite networks (SDN-SAT)Dynamic flow reallocationMultipath routingQuality of Service (

QoS

)

Multipath TCP (MPTCP)

Improved data transport via multiple paths

Failover

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OutlineIntroductionContributionSDN-SAT Framework

Performance Evaluation

Conclusion

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SDN-SATControl plane SDN controllerShipboard SDN switch (supports flow tables)Control channels are embedded in satellite systems

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SDN-SATSDN controllerResides on the ground or shipUses satellite controllers to allocate resourcesSatellite controllers

One dedicated controller for each SATCOM

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SDN-SATSDN Controller Architecture

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SDN-SATData planeLANSDN switch

SATCOM channels

Ship

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SDN-SATSDN-SAT Architecture

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SDN-SATMultipath TCP for SDN-SAT

LAN users are allowed to maintain several

subflows

Possible even with one IP

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Performance EvaluationSimulation setupLinux Ubuntu 14.04Mininet emulatorFloodlight remote controller

Kernel MPTCP v0.90

Path manager:

fullmesh,

num_flows

=2

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Performance EvaluationScenario

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Performance EvaluationMulti path vs Single pathThree satellite systems with 1.544Mbps, 1.544Mbps, 2.048Mbps, RTT=500ms

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Performance EvaluationMulti path failoverMPTCP with SDNThe satellite system with 1.544Mbps fails

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Performance EvaluationMPTCP with three paths on three satellites variable delays

Equal

path delay

: 500ms

Non-uniform delays

1:

500ms

, 200ms, 100ms

Non-uniform delays 2:

1000ms

, 500ms, 200ms

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Performance Evaluation

Case 1

. Three MPTCP sessions

Case

2. Three single path TCP sessions

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ConclusionSDN-SAT solution to Naval Satellite CommunicationsFlexible configuration of satellite servicesMultipath transmissionMultipath TCPImprove bandwidth utilization

Automatic failover

Future work

Larger naval satellite network

Resource allocation at SDN controller

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Thanks!

Q&A

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Simulation ResultsThroughput of MPTCP without SDN

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MPTCPCongestion ControlCoupled congestion control [1]Goal 1. Be fair to other TCPGoal 2. Load balancing

Goal 3. Compensate different RTTs across sub-flows

[1]

Raiciu

,

Costin

, Damon

Wischik

, and Mark Handley. "Practical congestion control for multipath transport protocols." 

University College London, London/United Kingdom,

Tech

. Rep (2009).[2]Khalili

, Ramin, et al. "MPTCP is not pareto-optimal: performance issues and a possible solution." Proceedings of the 8th international conference on Emerging networking experiments and technologies. ACM, 2012

.[3] Peng, Qiuyu, Anwar Walid, and Steven H. Low. "Multipath TCP algorithms: theory and design." ACM SIGMETRICS Performance Evaluation Review41.1 (2013): 305-316.

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Satellite SDN Architecture

Bao

, Jinzhen, et al. "

OpenSAN

: a software-defined satellite network architecture." 

ACM SIGCOMM Computer Communication Review

. Vol. 44. No. 4. ACM, 2014.

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Related WorkHigh Bandwidth Delay Product TCP [1]HyblaCubicWestwood

Multipath TCP (MPTCP) [2]

Improve throughput

Soft handover [3]

[1]

Caini

, Carlo, Rosario

Firrincieli

, and Daniele

Lacamera

. "Comparative performance evaluation of

tcp variants on satellite environments." ICC. IEEE, 2009.

[2] Ford, Alan, et al. Architectural guidelines for multipath TCP development. No. RFC 6182. 2011.[3] Paasch

, Christoph, et al. "Exploring mobile/WiFi handover with multipath TCP." CellNet. ACM, 2012.

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Related WorkMPTCPis an extension to TCP which lets you use multiple paths simultaneouslyPath manager, schedulerTo manage a Multipath TCP connection that uses several paths

TCP

subflows

To transport data

Congestion control

To control congestion over multiple paths

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MPTCP

Physical

Datalink

Network

Transport

Application

Multipath

TCP

TCP1

socket

TCP2

TCPn

...

Application

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MPTCPData transmissionTwo levels of sequence numbers

Multipath

TCP

TCP1

socket

TCP2

Multipath

TCP

TCP1

socket

TCP2

ABCDEF

Data

sequence

#

TCP1

sequence

#

TCP2

sequence

#

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of 21Slide29

MPTCP in Satellite NetworkThe idea in [1]

[1] Du

, Pengyuan, Xiao Li, You Lu, and Mario

Gerla

. "Multipath TCP over LEO satellite networks

.“ IWCMC.

IEEE, 2015.

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of 21Slide30

MPTCP in Satellite NetworkOn-demand Multipath Source Routing (OMSR)Distributed protocol => control overheadLacks of inter-satellite signaling

=>

route conflict

Devise a more sophisticated scheme

=>

onboard processing

[1] Du

, Pengyuan, Xiao Li, You Lu, and Mario

Gerla

. "Multipath TCP over LEO satellite networks

.“ IWCMC.

IEEE, 2015.

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Replace OMSR with Software-defined Networking (SDN) [1]SDN splits the control and data planeCentralize the design logicMinimize onboard processingEasier computation of disjoint pathsContributionMPTCP+SDN framework for LEO system

Motivation

[1]

Kreutz

, Diego, et al. "Software-defined networking: A comprehensive survey." Proceedings of the IEEE 103.1 (2015): 14-76.

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