Future combat system-scalable mobile network demonstration performance and validation results
ABSTRACT The Boeing/SAIC lead system integrator (LSI) team is designing a networked communications capability for the US Army/DARPA future combat system (FCS). This paper will discuss the results of a scalable mobile network (SMN) demonstration conducted in first quarter 2003 at Fort Dix and Lakehurst Naval Air Engineering Station in New Jersey. The scalable mobile network demonstration was designed to address three of the most challenging aspects of the FCS network communications architecture; Scalability of the network architecture to provide connectivity to the full FCS unit of action (UA), quality-of-service (QoS) in a heterogeneous network environment, and communications robustness in a mobile ad-hoc network. The demonstration was designed to show, in an operationally significant scenario, the technologies required to realize these capabilities. The demonstration consisted of a Brigade slice of an PCs combined arms battalion conducting a raid in a military operations in urban terrain (MOUT) scenario. This operation fielded a total of 63 nodes (42 vehicles, 18 dismounted soldiers and 3 air platforms) hosting 78 radios organized into 9 unique radio networks. Specific nodes were configured to be gateway nodes between networks by incorporating a router function within the platform. The demonstration utilized both new and legacy radios including radios from DARPA's FCS-communications and small unit operation-situational awareness system (SUO-SAS) programs, VRC-99 radios along with wideband JTRS radios (WJRs) and radio network access units (R-NA Us) from the Army's MOSAIC program. The Boeing/SAIC LSI team integrated these diverse radios into a heterogeneous network to demonstrate key technologies used in on-the-move tactical communications for the FCS force. The radios/routers were configured to emulate the functionality of the JTRS radio that will be the backbone radio for PCS. Field results for the scalable mobile network demonstration are discussed in the paper.
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ABSTRACT: Uncertainty in communication channel characteristics is a significant factor for data fusion operations in wireless networks. Burst and random errors, message delays, user mobility, and link outages are significant factors that influence data fusion performance. These factors become even more significant in future mobile ad hoc networking environments. To date, however, those factors are not sufficiently addressed by formulations used for modeling and predicting data fusion performance. A stochastic-based fusion formulation that incorporates the effects of non-deterministic behaviors and stochastic communications characteristics is developed and proposed as a method for predicting estimation capabilities. The resulting stochastic fusion equations enable decentralized estimation capabilities to be evaluated in communication networks having non-idealized channel characteristics and ad hoc connectivity. The method is implemented in a simulation model for decentralized estimation in networks with time-varying ad hoc connectivity. The simulation results demonstrate the ability to closely predict expected fusion performance while greatly reducing model complexity and simulation time relative to current techniques. Those findings demonstrate the efficacy of a stochastic fusion formulation for prediction, and extending the approach to a wider range of data fusion domains and techniques is recommendedInformation Fusion, 2006 9th International Conference on; 01/2006
Conference Paper: Disruption tolerant networking proxies for on-the-move tactical networks[Show abstract] [Hide abstract]
ABSTRACT: A major tenet of network centric warfare is that information sharing is vital to future battlefield superiority. Many plans for implementing NCW envision using IP as the network infrastructure to support information sharing, from wired and satellite networks to tactical networks. Unfortunately, IP implementations depend on the existence of stable end-to-end paths. If a router receives a packet and has nowhere to send it, the packet is dropped. Many tactical networks exhibit disconnections in connectivity that can severely impair, or completely halt, IP traffic. Disconnection tolerant networking (DTN) provides an end-to-end communications service in the presence of network disruptions, including (non-permanent) network partitions. DTN provides its own application programming interface, which is different from the sockets interface commonly used for TCP/IP. One way to adapt existing applications to use DTN is via application layer proxies. These proxies translate from applications' native use of end-to-end IP-based protocols such as TCP and UDP into DTN messages (bundles) that can traverse disrupted networks. This paper describes how DTN application layer proxies can be used with a CONDOR Jump-C2 class vehicle, using an HTTP (Web)-to-DTN proxy as an exampleMilitary Communications Conference, 2005. MILCOM 2005. IEEE; 11/2005