نتایج جستجو برای: watching satellite networks
تعداد نتایج: 510144 فیلتر نتایج به سال:
Studies have shown that packet reordering is common, especially in satellite networks where there are link level retransmissions and multipath routing. Moreover, traditional satellite networks exhibit high corruption rates causing packet losses. Reordering and corruption of packets decrease the TCP performance of a network, mainly because it leads to overestimation of the congestion in the netw...
The satellite industry is clearly committed to revisit and revamp the role of satellite communications within the 5G ecosystem. Central technologies being adopted in 5G networks such as Software Defined Networking (SDN) and Network Function Virtualization (NFV) are also anticipated to become key technological enablers for improved and more flexible hybridization of both satellite and terrestria...
To meet an increasing demand for multimedia services and electronic connectivity across the world, satellite networks will play an indispensable role in the deployment of global networks. A number of satellite communication systems have been proposed using geosynchronous (GEO) satellites, medium earth orbit (MEO) and low earth orbit (LEO) constellations operating in the Ka-band and above. At th...
Broadcast satellite networks are going to play an important role in the global information infrastructure. Several systems including DirecWay from Hughes Network System use satellites to provide direct-to-user high speed Internet services. TCP works well in the terrestrial fiber networks but does not work well in satellite hybrid (satellite-terrestrial) networks. In this paper we analyze the pr...
A number of satellite communication systems have been proposed using geosynchronous (GEO) satellites, as well as low earth orbit (LEO) constellations operating in the Ka-band and above. At these frequencies satellite networks are able to provide broadband services requiring wider bandwidth than the current services at C or Ku-band. As a consequence, some of the new services gaining momentum inc...
A wide variety of network applications require the use of reliable multicast protocols to disseminate data from one source to a potentially large number of receivers simultaneously. Broadband satellite is an ideal transmission medium to support such applications. Although several reliable multicast protocols have been proposed for the Internet, they are not optimized for satellite networks, and...
Digital media has become an integral part of modern lives. Whether surfing the web, watching satellite television, playing a digital video disc, or listening to digital music, a large part of our professional and leisure time is filled with all things digital. This is the basis for modern scientific and economic developments which is centered around the distribution of digital data to a worldwi...
The influence of clouds on Earth ́s radiation balance is a key component of the atmospheric system. Therefore, the determination of cloud cover is an important activity traditionally performed by human observations and broadcasted by meteorological services observers in Synop and Metar reports. However, human observations are subject to large errors of estimation, and their temporal resolution i...
A survey of Everyday -Life Information Seeking (ELIS) and Information Grounds of Armenians in Tehran
Background and Aim: This study attempted to identify Everyday Life Information Seeking (ELIS) and Information Grounds (IG) of Armenians in Tehran . Methods: The study is of a cross-sectional survey type. The study sample consisted of individuals older than 15 years. Total population was 30,000, of whom 20,000 were over 15 –year-old individuals. Using the Kerjcie– Morgan table, 377 individuals w...
ecently, the interest in broadband satellite networks has grown rapidly. Advances in transmission technology have led to the availability of low-cost earth terminals with interfaces to standard terrestrial networks. The relative ease of deployment and superior remote access capabilities of satellite networks are envisioned to provide bandwidth on demand to geographically diverse user groups. Th...
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