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A future satellite communications system is envisioned that will provide a number of enhancements over predecessor satellite communication systems. It will employ high capacity packet switched service in space, high rate circuits between terminals, and utilize Dynamic Bandwidth Resource Allocation which dynamically assigns resources to terminals based on current channel conditions and traffic demand...
Based on Universal Mobile Telecommunications System (UMTS) wideband code division multiple access (WCDMA) technology, the mobile user objective system (MUOS) provides a wide range of wireless telecommunications services to the war fighter over geosynchronous satellites. As MUOS is a multiple beam system, it is of paramount importance for the user entry (UE) to select the best beam, which in turn requires...
Demand Assigned Multiple Access (DAMA) is a technology used to assign link capacity based on user demand. The allocation of capacity is limited by a set of constraints (e.g., priority of the traffic, link condition, RF interference, required bandwidth). Capacity is allocated in the time and frequency domains. An allocation algorithm determines per-user capacity for each assignment epoch. A packing...
The Mobile User Objective System (MUOS) is largely based on 3rd Generation Partnership Project (3GPP) standards, however, these standards are intended for terrestrial mobile communications networks. As a result of incorporating geosynchronous satellites into the design (e.g., extended propagation delays, power, cell size), modifications to the 3GPP procedures, such as moving control of cell selection,...
Input to JTRS' future increment products may present an opportunity to address the design and the operational needs for MUOS handheld terminals. In terms of capacity, bit rate, coverage, availability and portability, MUOS handheld terminals provide significantly enhanced warfighter capability over the existing UHF satellite communication (SATCOM). In addition, it fulfills the needs for the hereto...
Emerging hybrid satellite communications and wireless network architectures support high bandwidth services and applications for tactical users. In this paper we propose a cross- layer design approach focusing on physical layer interaction on the application layer using an OPNET simulation environment. This paper studies the effect of fading on dynamic resource allocations and the impact of rain fading...
As advanced communications techniques reach capacity, have reduced performance or system availability, or become unusable, the warfighter must have a reliable, high-capacity communications system in place and standing ready to supplant the degrading systems. Events in the recent past have shown satellites vulnerable to a number of ills or potential problems that could be debilitating. This paper addresses...
The quick transmission of radiological data between medical treatment facilities (MTFs) greatly determines the quality of care a wounded soldier receives. A typical full-body computed tomography (CT) study currently takes on average 4.5 hours to be transmitted from one MTF to another while a single digital chest X-ray can take over an hour. An evacuated wounded soldier often arrives at the higher-level...
COCOMs and G/RSSCs need the ability to rapidly, accurately, and conveniently perform mobile user objective system (MUOS) communications usage planning and to determine if a particular allocation is sufficient so as to, if necessary, negotiate an adjusted apportionment. This paper discusses the design goals of a stand-alone MUOS communication planning application that satisfies these planning objectives...
A key challenge of convergence is delivering high bandwidth imagery, video and data products to the dismounted soldier without the benefit of garrison infrastructure. The Global Broadcast Service (GBS) Joint Program Office (JPO) is realizing this vision with the adaptation of their transportable IP networked satellite terminal into a manpackable Receive Suite (RS) permitting single person transport,...
There are three separate power control algorithms utilized in the Mobile User Objective System (MUOS). They are Point-to-Point, Group, and Common-Channel. Although MUOS is largely based on Third Generation Project Partnership (3GPP) standards, a unique non-standard group network capability is provided in the system. This point-to-multipoint capability requires a novel dedicated Group Power Control...
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