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 [email protected].
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 [email protected]
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.
Top Related