Analysis of aeronautical gateway protocol
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Analysis of Aeronautical Gateway Protocol. Curtis Kelsey University of Missouri. Overview. Introduction Method Experiment Results Conclusion Summary. Introduction. Aeronautical Networks are unique Mixture of static & dynamic nodes Extremely high speed nodes

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Analysis of Aeronautical Gateway Protocol

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Analysis of aeronautical gateway protocol

Analysis of Aeronautical Gateway Protocol

Curtis Kelsey

University of Missouri


Overview

Overview

  • Introduction

  • Method

  • Experiment

  • Results

  • Conclusion

  • Summary


Introduction

Introduction

  • Aeronautical Networks are unique

  • Mixture of static & dynamic nodes

  • Extremely high speed nodes

  • Custom network stack is necessary

Dynamic airborne environment


Introduction1

Introduction

  • ANTP

    • AeroTP (TCP)

    • AeroNP (IP)

    • AeroRP (Routing)

    • AeroGW*

  • AeroGW Converts

    • TCP  AeroTP

    • IP  AeroNP

    • Link/MAC  iNET MAC

    • PHY  iNET PHY


Introduction2

Introduction

  • Conversions Occur:

    • Ground Stations

    • Aeronautical Nodes

  • Possible Overhead Implications

    • Less data transferred

    • Communication windows lost

  • Most Significant Delay

    • Egress conversion from MAC to IP (Similar to ARP)

    • Egress is not constrained by time due to node movement


Method

Method

  • Does delay caused by the conversion process result in excessive data loss?

  • Implementation of entire suite beyond the scope of one semester

  • Implement a network simulation

  • Use additional delay as control variable

  • Analyze data delivery


Ns3 setup

ns3 Setup

  • http://www.nsnam.org/wiki/index.php/Installation

  • Virtualbox or Hyper-V

  • Requirements

    • Gcc/g++ > 3.4

    • Python

    • Mercurial

    • Bazaar

    • Etc…

  • Downloading

    • clone http://code.nsnam.org/ns-3-allinone

    • wgethttp://www.nsnam.org/release/ns-allinone-3.13.tar.bz2


Ns3 setup1

ns3 Setup

  • Build

    • ./build.py –enable-examples –enable-tests

  • Configure

    • ./waf -d debug --enable-examples --enable-tests configure

  • Test

    • ./test.py –c core

  • Run a Project

    • ./waf –run <my_project>


Experiment model

Experiment Model

  • 10 Airborne Nodes/Routing Nodes (Wireless)

    • Random Walk

    • Random Speed

  • 5 Ground Stations (Access Point)

    • Random Location

  • GS to Internet Direct Link

    • 100Mbps

    • 2ms delay


Experiment model1

Experiment Model

  • 1 Destination Internet Node (Wired)

    • 100Mbps

    • 1/10/100/1000ms delay

  • Traffic

    • 100-1kb packets/10 seconds

    • UDP

  • Zone

    • 1000 x 1000 area


Experiment construction

Experiment Construction

  • PointToPointHelper

    • Handles Wired/Wireless Bridge

  • CsmaHelper

    • Handles wired nodes

  • WifiHelper

    • Handles wireless nodes

  • MobilityHelper

    • Handles AN and RN Mobility


Experiment construction1

Experiment Construction

  • Packet capture enabled

    • AP

    • Csma (Wired)

    • Wireless Nodes


Results

Results

  • Simulation ran for

    • 1ms additional delay

    • 10ms additional delay

    • 100ms additional delay

    • 1000ms additional delay

  • At Wireless Network Edge


Results1

Results

  • Packets captured at

    • Wireless AP (Ground Station)

    • Wired Node

  • Pcap file processed with Tcpdump & sent to log files

    • Tcpdump –nn –tt –r (pcap file) > (log file)


Results 3

Results 3

  • How many of the 100 packets got delivered?

Wired Node

Wireless Nodes


Results2

Results

  • 1ms

    • 100% packet delivery

    • No delay between transmit/receive

  • 10ms

    • 100% packet delivery

    • No delay between transmit/receive

  • 100ms

    • 100% packet delivery

    • No delay between transmit/receive

  • 1000ms

    • 100% packet delivery

    • No delay between transmit/receive


Conclusion

Conclusion

  • Delay implemented on wired node does not affect traffic across point to point link

    • Move delay variable to p2p link

  • Random walk & speed for wireless nodes is not causing dropped packets

    • Expand zone & define a high velocity

  • Amount of data transferred needs to be increased

    • Illustrates dropped connections


References

References

  • (Primary Paper) E. K. ¸Cetinkaya and J. P. G. Sterbenz. Aeronautical Gateways: Supporting TCP/IP-based Devices and Applications over Modern Telemetry Networks. In Proceedings of the International Telemetering Conference (ITC), Las Vegas, NV, October 2009.

  • Cetinkaya, E., & Rohrer, J. (2012). Protocols for highly-dynamic airborne networks. Proceedings of the 18th annual international conference on Mobile computing and networking, 411–413. Retrieved from http://dl.acm.org/citation.cfm?id=2348597

  • Narra, H., Cetinkaya, E., & Sterbenz, J. (2012). Performance analysis of AeroRP with ground station advertisements. Proceedings of the first ACM …, 43–47. Retrieved from http://dl.acm.org/ft_gateway.cfm?id=2248337&ftid=1233995&dwn=1&CFID=118936837&CFTOKEN=41922410

  • Sterbenz, J., Pathapati, K., Nguyen, T., & Rohrer, J. (2011). Performance Analysis of the AeroTP Transport Protocol for Highly-Dynamic Airborne Telemetry Networks. Retrieved from http://oai.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=ADA544743

  • J. P. Rohrer, E. Perrins, and J. P. G. Sterbenz. End-to-end disruption-tolerant transport protocol issues and design for airborne telemetry networks. In Proceedings of the International Telemetering Conference (ITC), San Diego, CA, October 2008

  • A. Jabbar, E. Perrins, and J. P. G. Sterbenz. A cross-layered protocol architecture for highly-dynamic multihop airborne telemetry networks. In Proceedings of the International Telemetering Conference (ITC), San Diego, CA, October 2008.


Summary

Summary

  • Introduction

  • ns3 setup

  • Experiment Construction

  • Results

  • Conclusion

  • Summary


Questions

Questions?


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