Approved for public release; distribution is unlimited. Case 10-1057. 8 September 2010.

REAL-TIME EMULATION OF JTRS WAVEFORMS AND NETWORKSJTRS Network Emulator (JNE) accurately emulates JTRS waveforms and mobile networks in real-time. JNE provides an environment for network planning, test & evaluation, application development, and training with JTRS radios.

The Ground Mobile Radio (GMR) is a next generation,

vehicle-mounted, ‘multimedia radio’ to be deployed by

the US Department of Defense (DoD) as part of the Joint

Tactical Radio System. JTRS is a software-defined radio

(SDR) capable of running multiple waveforms and

provides a network-centric capability to connect joint task

forces and multiple military services. Two important

waveforms of JTRS are the Wideband Network Waveform

(WNW) and the Soldier Radio Waveform (SRW).

The JTRS Network Emulator (JNE), provided by Scalable

Network Technologies, Inc., is being developed to provide

a scalable environment to facilitate analysis, test and

evaluation, mission planning, mission rehearsals and

training for networks of JTRS and current radio networks

that can scale to hundreds of nodes. JNE uses Live-

Virtual-Constructive (LVC) models to address a significant

problem in DoD acquisitions: unavailability of physical

JTRS radios in sufficient numbers. JNE provides a unique

software-based capability to emulate large networks in

real-time. It also allows real applications like situational

awareness, command & control, streaming video and chat

to run on the emulated wireless and wired networks.

Waveforms like WNW (and SRW in near future) running on

real GMR radios can interoperate with emulated

waveforms in JNE, and network managers can control the

emulated network just like they manage real networks.

JNE can thus be used in place of physical JTRS radios for

a variety of purposes at a significantly lower cost while

providing the ability to operate the emulated network in

difficult environments like urban areas, mountainous

terrain, mixed land-air deployments, and it has the

potential for multi-brigade scenarios.

JTRS Network Emulator is developed by Scalable Network Technologies, Inc. (SNT) under a

SBIR Phase 2.5 contract funded by JPEO JTRS, with matching funding from Program

Execution Office Integration (PEO I) Brigade Combat Team Modernization (BCTM), and Army

Operational Test Command (OTC). The Communications Effects Server (CES) is Government

Off-The-Shelf (GOTS) software developed under direction of the PEO I, Modeling and

Simulation Office (MSO). Access to JNE and CES requires a Distribution Agreement (DA) and

a government sponsor. For more information contact us at jneinfo@scalable-networks.com.

JTRS Network Emulator

EXata Network Emulator!

CES (Communications

Effects Server)!

SRWNM Interface!

JWNM Interface!

GMR Interface!

Socket Interface!

C2/SA Interface!

SNMP!Manager! Packet Sniffer! Real

Applications!Real Devices: VoIP, Routers!

EXata Interfaces!

OneSAF! STORM !C2/SA!

SRW Network Manager (SRWNM)!

JTRS-WNW Network Manager

(JWNM)!

Live GMR Radio!

JNE Architecture!

scalable-networks.com/jne 310.338.3318 jneinfo@scalable-networks.com

JNE Architecture1. CES for BCTM simulates waveforms like WNW, SRW

and military radios like GMR, SINCGARS, and EPLRS.

2. EXata is a parallel emulation engine that realistically

models the wireless and wired environment. It has

libraries for urban terrain, mobile ad-hoc networks,

WiFi, WiMAX, 3G cellular, and cyber warfare.

3. Hardware-In-The-Loop interface to JTRS radios.

4. Interfaces (under development) to JTRS Network

Manager software like SRWNM and JWNM that

enable management of the radios in JNE just like the

real radios.

5. Innterfaces to training, wargaming and testing tools

like OneSAF and STORM C2/SA.

6. EXata interfaces for: (a) real IP applications like SA

C2, chat, and streaming video, that can run on the

emulated network in EXata (b) packet sniffer and

network analysis tools like Wireshark (c) SNMP-based

network managers that can discover and manage the

emulated network in EXata.

Testing Scalability of NetworksJNE-based emulation of JTRS waveforms reduces

the need for real devices in scalability tests. Testing a

network of hundreds of radios is very expensive with real

devices. Ensuring that the radios can support company,

battalion and brigade-sized networks during operations is

critical. Design and setup of these networks is also

complex and very time consuming. And, obtaining more

than a few prototypes of new generation radios is often

impossible. Test engineers can get the required number

of radios for larger scalability tests by combining a few

real radios with the remaining devices in JNE.

Testing Network Managers & ApplicationsJTRS network management software configures and

manages large scale networks when they are deployed.

The JWNM Interface allows the WNW radios in JNE to be

managed by JWNM just like real radios. (Note: WNW

model in JNE does not include actual HAIPE). This

enables evaluation of the performance, scalability, and

robustness of JWNM before physical radios are available

in sufficient numbers.

Real applications like tactical command and control

(C2), situational awareness (SA), video, VoIP, email and

chat can also run on the emulated network in JNE

undergoing the realistic communications effects like

routing, terrain, weather, and mobility. Such applications

can now be tested repeatedly using JNE in conditions

that are difficult to represent in field tests and wargaming

exercises, at significantly lower costs.

Training for Network-Centric WarfareJNE has interfaces for existing training and

wargaming software like OneSAF and STORM. Realistic

communications effects can be introduced and the

results used to shape doctrine, tactics, techniques and

procedures (TTPs) for net-centric operations. In a training

context, the human-in-the-loop interface of JNE can be

used to provide a realistic training environment for signal

officers and related professionals. Instructors can use

JNE to create events such as shutting down a radio or

bringing in other obstacles. JNE also supports HLA/DIS

for interfacing with Semi-Automated or Computer

Generated Force (SAF or CGF) simulators.

JNE is currently being used for GMR system integration

tests and is undergoing verification and validation for

future GMR operational tests. It is designed for use in

other JTRS programs like Airborne, Maritime, Fixed

Station (AMF) radio, and Soldier Radio Waveform (SRW).

The core technologies of JNE can significantly advance

training, test, and analysis of emerging SDR and

network-centric systems.

WNW NODES IN JNE

NUM. OF PROCESSORS

36 4

81 8

JNE Users• JPEO JTRS NED (Network

Enterprise Domain)

• Army ATEC OTC (Operational Test

Command of Army Test &

Evaluation Command)

• Army TRADOC Signal Center

(Training and Doctrine Command)

• Army CERDEC (Communications-

Electronics Research,

Development, and Engineering)

System Requirements• Microsoft Windows®

• Linux® (Red Hat®, CentOS, SUSE®)

• 2 GB RAM, 1 GB disk space

• 256 MB graphics card

• Intel® or AMD® Processors

• Parallel support with:

• Dual-core, quad-core or other

multi-core processors

• Multiprocessor, cluster systems

with Ethernet or Infiniband®

backplane

Scalability improvements of JNE in

emulating larger networks, in real-

time, using off-the-shelf multi-core

and cluster systems.

JNE FEATURES MODELS

•EXata Parallel Emulation Engine•Scalability for Large Networks•2D, 3D GUI for Network Design•LVC Simulation

CES Models:•WNW, SRW•NCW, HNWRadios:•JTRS GMR, WIN-T•HMS, EPLRS•SINCGARS

Interfaces:•IP Sockets•Hardware and Human In-The- Loop(HWIL & HITL)•Network Managers •IP Applications•IP Devices •HLA/DIS•OneSAF

EXata Models:•IPv4, IPv6•TCP, UDP, MPLS•PIM, OLSR, AODV•BGP, OSPFv2, v3•VoIP, SIP, USAP•Ethernet, WiFi•WiMAX, 3G/UMTS•Link11, Link16

Modeling of Wireless Communications EffectsWireless communications is seriously affected by a variety of channel and environmental factors

like Doppler Shift, terrain, channel interference, pathloss, fading, multi-path, non-line of sight, and

weather. JNE models these effects dynamically to improve realism of the emulated network.