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Migrate point-to point circuits to an IP based network
Register all data with the DISA metadata repository
Implement network access and connectivity via JTRS enabled terminals, evolutionary terminal
acquisition
Provide timely, reliable, secure transmission of large quantities of data with eventual migration to
SCA compliant CDL, JTRS and Family of Advanced Beyond Line-of-Sight Terminals (FAB-T)
Provide assured, direct connectivity into the Transformational Communications System (TCS) space
backbone
UA networking will incorporate the following major functional areas.
Routing. mobile ad-hoc routing, traditional routing, and global connectivity
Mobility and IPv6. mobility services for both user hosts and networks
Quality of Service (QoS)/Class of Service (COS). guaranteed and differentiated services for user
networks
Network Management. management of mobile nodes and integration with other GIG network
management systems
Information Assurance (IA). IP network security
DOD INITIATIVES
The DoD is transforming from a hierarchical, point-to-point (circuit switched) architecture to horizontally
integrated, net-centric operational model. The highly successful, DoD mandated CDL program will
contribute significantly to UA communications for the foreseeable future, transitioning to this net-centric
configuration in the coming years. In addition, DoD has sponsored six key technology initiatives: JTRS,
GIG Bandwidth Expansion (GIG-BE), Transformation Communications Architecture (TCA) SATCOM
UAS ROADMAP 2005
APPENDIX C - COMMUNICATIONS
Page C-7
(TSAT), Net-Centric Enterprise Services (NCES), IA programs, and Horizontal Fusion. Three of these
initiatives directly impact UA development and deployment. The guidance in this appendix presumes
their successful execution:
JTRS. successfully deploys
TSAT. constellation launches on schedule
IA. HAIPE. a key web enabled encryption device successfully enables GIG Red Edge/Black Core
The heart of the new net-centric model is the IP and networking services layer functionality, which will
provide significantly improved communications modes (transport). This layer will provide the
information services and applications needed to ensure timely, accurate, and secure discovery of and
access to the information needed by the war fighter. Drawing on these services, the end user will receive
information in the format and time of his choosing (Smart Pull).
Common Data Link
Today’s CDL provides the only means to meet ongoing, wide band, communications requirements. CDL
is the DoD mandated standard for wireless data link communications of high capacity airborne ISR sensor
data. Data link interoperability is governed by compliance with CDL specifications that address
waveforms, associated protocols, and external (platform/sensor/network) interfaces. CDL is a full duplex,
although asymmetric, wide-band data link that connects the UA to its control station either directly or via
SATCOM. The control station generally transmits command and control data at 200Kbit/s and receives
sensor product at up to 274 Mbit/s.
Information exchanges occur primarily between the UA, its control station, and specially designed
external interfaces, such as Air Traffic Control voice radio and video feeds. UA products, after being
processed, flow to external nodes from the control station servers through network connections. In its
current form CDL provides a closed circuit between the UA and its control station, carrying commands,
status, and sensor products. The control station, as an edge device on the GIG then provides this
information to the user community, while keeping the UA isolated from the GIG. CDL equipped UA
must transition from a closed circuit, merely using communications services, to a network node, actually
providing communications services.
The first step to achieving net-centricity involves net enabling the interfaces. This means creating IP
based network connections and routers between UA subsystems and the on board data link with
corresponding network interfaces between the control station data link, control station subsystems, and
the GIG. This changes the paradigm from that of a closed circuit to that of a network node. Functions
and products of UA implemented as network nodes would be accessible to other authorized nodes on the
GIG, not just to the control station. The UA itself becomes an edge device on the GIG.
The second step involves UA that can connect directly to more than one node on the GIG. During times
when the demand on the data links is low, such as during cruise portions of the mission, UA capable of
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unmanned aircraft systems roadmap(67)
