HPC use in Testing Ad Hoc Wireless Sensor Networks - PowerPoint PPT Presentation

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HPC use in Testing Ad Hoc Wireless Sensor Networks

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  1. HPC use in Testing Ad Hoc Wireless Sensor Networks Ken LeSueur Redstone Technical Test Center April 22, 2009

  2. Wireless Sensor Network Testbed Wireless Sensor Network Testbed • Need: Realistic testing of wireless tactical networks • Networked sensors and sensor fusion systems • Networked systems require the network to stimulate the system, unlike stand alone systems that can be tested in isolation • A real-time network emulation with interfaces to real systems that forces perception and response as they would in the real world • Current test methods are not adequate for testing tactical wireless network hardware in realistic battlefield environments 2

  3. Proposed Approach Proposed Approach • Combine • Parallel computing resources • Scalable, high fidelity network emulation • Computer Generated Forces (CGF) model • Testing of sensor hardware is facilitated by Network emulation that will allow interfacing of sensor hardware with virtual components to produce operationally realistic numbers of network nodes • 5,000 to 10,000 for a future Brigade Combat Team 3

  4. Example of Multi-Layered Network Example of Multi-Layered Network 4

  5. Example of Multi-Layered Network Example of Multi-Layered Network UAS Networked Missiles UGV Sensors UGS 5

  6. NLOS-LS Tactical Scenario Tactical Scenario Track Msg (WNW) Detection Msg EO/IR Node Track Message (SRW) Gateway Node 6

  7. NLOS-LS Tactical Scenario Tactical Scenario Detection Msg EO/IR Node Track Message (SRW) Gateway Node 7

  8. NLOS-LS Tactical Scenario Tactical Scenario Fire Msg (WNW) Detection Msg EO/IR Node EO/IR Command Msg Gateway Node 8

  9. General Requirements • Interface to real tactical network hardware • Real-Time Operation • Parallel Implementation to scale for large number of nodes • Support for Military standard Joint Tactical Radio • Systems (JTRS) • Soldier Radio Waveform (SRW) • Wideband Networking Waveform (WNW) 9

  10. Test Bed Design Test Bed Design Sensor Hardware HWIL Interface Network Simulation (QualNet) Wireless Network Interface In-band Stimulation Node Positions On Terrain Physical Stimulator Computer Generated Forces Model (OneSAF) • Infrared • Visible • Seismic • Acoustic 10

  11. Unattended Ground Sensor Example Tactical Unattended Ground Sensor QualNet Network Simulation Gateway Node SRW Wireless Interface Ethernet HPC In-band Acoustic/Seismic Stimulation Node Positions On Terrain OneSAF 11

  12. System Configuration Delivery/Integration August 2009 12

  13. Subsystem Test & Analysis Branch Facilities Distributed Test Control Center (DTCC) / High Performance Computer (HPC) Labs • Capabilities: • Spans from Pure Simulation to Hardware Integration • Utilizing HWIL Assets for both Lab and Field Environments • Classified and Unclassified Networking and Computing • 92+ Microprocessors and Access to HPC Resources • Advanced Multi-User KVM Switching to All Computers • Fiber Links to All RTTC Labs and Ranges • Defense Research & Engineering Network (DREN) • Connection (OC-12 with OC-3 Guaranteed) • Host of Simulation, Visualization, Network Monitoring • and Data Recording Software Suites • Video Processing, Recording and Distribution • Simulated Tactical Radio Communications Capability HPC Lab HPC Control Area Bullets: DTCC DTCC

  14. Initial Testbed Efforts Results • Analysis of scalability of Network emulation and HWIL testing/simulation • Analysis of performance as a function of fidelity (path loss modeling, terrain model, interference modeling, jamming/attacks, power/battery model, data acquisition, etc.) 14

  15. Test Setup Test Setup • Purpose: Evaluate number of Nodes, number of processors, and simulation complexity on real-time testing. • HWIL interfaces linking live video Server/Client • UDP Generator Rude/Crude used for quantitative measurements • 512 kbps UDP/Video Stream • 802.11 wireless protocol • 2 Mbps wireless subnets • Monitor Real-time performance while adjusting number of nodes, subnets, and background traffic 15

  16. HWIL Interface HWIL Interface - Virtual Node - Simulated Node 16

  17. Performance Data Performance Data 17

  18. Performance Data 18

  19. Performance Data Cont. 19

  20. Conclusion Conclusion • Using the scenarios outlined in this testing, approximately 750 simulated wireless network nodes can be simulated on a two processor computer while simultaneously interfacing to two external HWIL networked systems passing live streaming video • Parallel efficiency is approximately 65% for a 1000 node scenario running on 2 processors (Expand when HPC delivered) • Performance thresholds can be measured but the results are highly scenario dependent 20