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The Tactical Ground Reporting (TIGR) system provides a unique multimedia patrol preparation and debriefing tool tailored to the needs of the patrol leader, and is used by all U.S. Army brigades in Iraq and Afghanistan. The distribution of data from geographically dispersed patrols requires network awareness and policy flexibility. The TIGR system utilizes an application overlay on to the tactical...
A method that uses the parabolic equation (PE) model to characterize the transmission channel for wideband waveforms is discussed. The results presented use the Advanced Propagation Model (APM) developed by the Atmospheric Propagation branch at the SSC Pacific which utilizes the split-step Fourier algorithm to solve the PE wave equation for a continuous wave (CW) source. To determine the channel response...
We describe the key design concepts of domain area planning utility (DAPU) developed by the PILSNER program to perform high-speed automated planning of future battlefield networks (FBNs). DAPU processes multiple inputs from resource planning such as nodes and their trajectories, planned ground- and air-tier nets, unit task organization (UTO) relationships, and typical communication requirements. It...
With the continued evolution of technology in support of the overseas contingency operations (OCO), the need for effective situational awareness (SA) and efficient command & control (C2) becomes increasingly important for successful mission planning, management, and execution. The digital video broadcast - return channel satellite (DVB-RCS) NetOps vision for remote management and monitoring aims...
A mission critical environment (MCE) consists of error-prone, highly variable, and highly rate limited communication channels. Paradoxically, this substantially increases the need to perform optimal task allocation (OTA), while at the same time making it much harder to perform OTA efficiently. To simplify the problem, we consider OTA for publish/subscribe-based MCE since it has unique characteristics...
The policy-managed radio model offers a way to force cognitive radios to comply with transmission restrictions and regulations. Policies that implement radio regulations are written in a policy language, and used by the policy engine to approve or deny transmission parameters. Since decision speed is one of the primary design requirements of cognitive radios, policy engines and reasoners can easily...
The development of the ground-based user-to-base (U2B) feederlink demodulator for the Department of Defense (DOD) mobile user objective system (MUOS) is complete. Its integration with all components of the U2B feederlink system, including ground components and the spacecraft transmitter, is underway. This paper documents work performed to demonstrate the compatibility of the demodulator with the predicted...
With the proliferation of network management tools that adjust link and path characteristics to optimize network performance and health, TCP's are frequently incorporating path characteristic detection mechanisms to quickly adapt to the effects of these changes. Optimal TCP performance, including rapid adaptability, depends on, among other things, an accurate view of the of the bandwidth-delay product...
We consider the design of demand assigned multiple access (DAMA) algorithms that efficiently utilize limited RF uplink resources for packet switched military satellite communication networks. In previous work, we designed DAMA algorithms that optimized link layer efficiency and throughput while controlling delay and jitter. In this work we assess the ability of our DAMA algorithm to meet service level...
Long-reach optical access technologies have emerged as a promising solution for combining access and metro backhaul networks in a cost-effective manner. This study develops a slotted PON (SPON) architecture based upon an AWG for long-reach optical access networks. The AWG enables the SPON to achieve wavelength spatial-reuse and to provide an internetworking capability amongst ONUs located within different...
The Integrated Waveform (DAMA UHF SATCOM), specified in MIL-STD-188-181C/182B/183B/185A, defines a TDMA communication system in an attempt to improve satellite bandwidth utilization over conventional SATCOM waveforms. To overcome some of the limitations of statically defined data rates for user communication services in MIL-STD-188-183A/-, a new type of user communication service that supports asynchronous...
To fully utilize radio resources by intelligently filling in as much radio spectrum gaps as possible, the concept of cognitive radio network has been well accepted. A challenge inherent in this technology is how to build a mechanism that can allocate resource by learning and adapting to a specific radio transmission environment. In this paper, we propose a cognitive resource management scheme that...
One of the main components of the next generation protected military satellite communication systems is dynamic bandwidth resource allocation (DBRA). A centralized DBRA algorithm on the satellite dynamically grants terminals time and frequency resources as their traffic demands and channel conditions change, leading to significant increase in the overall system throughput. This paper address one potential...
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