Tactical Service Bus: The flexibility of service oriented architectures in constrained theater environments

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1 Tactical Bus: The flexibility of service oriented architectures in constrained theater environments Tactical Edge in NATO Context Tactical still very much under control of national forces: Zone of Operations Coordination between zones at operative levels Evolution towards more collaboration at tactical level: Friendly force tracking Close Air support REACTIVITY Collaborating at tactical level implies using radio communication systems Common waveform, common settings Software Defined Radio 2 1

2 Radio Communications in a tactical environment Radio communications over VHF/UHF/ : Un-guaranteed connectivity: Distance versus radio range Path obstruction and jamming Mobility Radio Errors: Corrupted data/retransmission delays Radio silence: Listening only Limited bandwidth, variable throughput Shared spectrum & Multiple hops No IP broadband always-on connectivity in a tactical environment in a foreseeable future Operational procedures may partly work-around those limitations 3 Impact on field information systems Lack of connectivity guarantee Uncertain remote service availability Platform self management: Autonomous information system Need for data caching and synchronization Changing topology No guaranteed Delivery and Platform Mobility management keeping track of: The platform presence in the network The platform network topology The services to platform binding Radio Errors & Silence No guaranteed Data Delivery Data and service delivery management: Message formatted according to operational context (situation, recipients, radio silence) behavior adapted to underlying network capabilities 4 2

3 SOA in a NNEC context at tactical level 5 Data distribution Content or role based addressing Common Waveform and Data Model e.g. Friendly Force Tracking Common s and Processes Uncertain connectivity calls for loose coupling SOA Concepts Shared service model e.g. Joint operations based on NATO processes Ad hoc s and Processes Semantic technologies Maturing e.g. Co-operative protection Enterprise Bus in tactical environments SOA widely implemented on Enterprise Buses. Reactivity based on business indicators and processes Foreseeable issues of ESB deployments on tactical radios: Deployment: ESB assumes IP, not all tactical radios are IP capable. Permanent connectivity LAN networking Performances: Huge overhead due to SOAP/XML/HTTP/TCP/IP protocols > x20 versus raw data size. ESB unlikely leverage IP multicast on radio bearers Limited data & service delivery control: Fixed & reliable broadband connectivity assumed. Unaware of topology and mobility Unaware of operational priority 2 service levels only: full service or no service 6 3

4 7 Tactical Bus approach The interconnects tactical data & services providers and consumers with the following features: Mobility & Presence Management Any network topology, any bearers Data and Delivery Management Synchronized service registry adaptation to network conditions Optimized routing taking into account broadcast capabilities of radio bearers Message formatting according to operational needs: Reliability, Priority and targeted receivers Content dependent data compression Loose producer & consumer coupling: Publish/Subscribe/notify paradigm Data and interoperability with other systems Standard interfaces: legacy and new SW applications Data Dissemination System over LAN (DDS) and Tactical Data Link (TDL) Behavior Example: throughput Optimal service No service delay in an open environment Legacy Systems (L16,DDS) Other nodes Non IP Wireless Bearers Standardized data, message & service models: Re-use NATO models & Stanags node Providers Applications & Data mediation & Dissemination Message routing IP Wireless Bearers Consumers IP-SEC ESB Consumers Wired connections Applications Providers Tactical Communications Strategic Communications 8 4

5 Supported s and Applications brings technical services but also common generic services: Mail and Messaging Conference Battlefield Management router Gateway Logistics System Management Push to Talk router Collaborative protection Imagery on Demand Dissemination broker V1 Transmission broker V1 Fire Transmission broker Message router V1 V1 Real Time Data DistributionV1 Session & Mobility Manager V1 Mission related Applications Common s Technical s VHF UHF SATCOM LAN Transmission means 9 V1 : available as part of 1 st release Ubiquitous service access Web s anywhere: Cooperative web relaying to connect service producers and consumers Position 5 4 Position Request/Reply CNR1 3 2 Optimized for constrained networks: Built on web message compression to reduce service access delay CNR2 5 via 3 on 5 Position Requester : Radio Access Point 10 5

6 Event based services Alert Position Alert CNR Real time event notifications: Alerts, Situation Awareness, Chat Position data Alert Mission aware system: message prioritization, bandwidth pre-emption CNR Sub to Alerts & Positions Subscriber to Alerts : Radio Access Point Data dissemination: Publish/subscribe/notify model 11 Matching s and Resources Performance based routing: Selects routes offering required performances HCDR CNR transport: Optimize service flows to selected transport bearers SATCOM Client of 12 robustness delivery level adapted to available capacity/performances 6

7 background RTO/IST-061 RTG-027 (2004/2006): Secure Oriented Architectures (SOA) Supporting NEC CWID (2006): Demonstration of Secured Web s, Data Labeling & Data Dissemination through extended NATO IEG EDA LARA (2005/2006) project: Dissemination of sensor data in a maritime environment Ad hoc radio system with bandwidth allocation demonstrator (2007/2008) : Land system of system demonstrator highlighting operational scenarios & benefits Real time distributed Mission System Real radios simulated air medium Sense and respond scenarios 13 key progression & evaluation axes 14 Scalability nodes System Management Performance Gain vs. ESB nodes Dynamic COI management Autonomous management Security x10 x nodes Mission Planning InfoSec Multi level DiffServ Transec Intserv Traffic Engineering IP RT data / image Information exchange e.g. L16/DDS Multi-bearer IP routing Disruption Tolerant Networking QoS Resilience s Interactive Voice & Interoperability Collaboration e.g. ESB 7

8 key progression & evaluation axes 15 8

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