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To cope with the increasing demands of mobile devices and the limited capacity of cellular networks, mobile connections are offloaded to WiFi. The access capacity is further increased by aggregating backhaul bandwidth of WiFi access links. To analyze the performance of aggregated access links we develop a model for two and more cooperating systems sharing capacities using an offloading scheme. The...
Quality of Service (QoS) and Inter-domain traffic control are the current research topics in the fields of computer communication and IP Telephony in Local Area Network (LAN), Wide Area Network (WAN) and Wi-Fi network. By appropriate design and implementation of QoS and traffic control in a corporate network a significant amount of bandwidth and thereby money can be saved. Performance and reliability...
Supporting end-to-end quality of services for real-time interactive video applications such as videoconferencing and distance learning across the Internet requires a collection of independent networks or domains to work together to route packets between source and destination. Routing packets across the Internet using a feasible path - a path that meets the quality of service (QoS) attributes of video...
The Multi-Path Transmission Control Protocol (MPTCP) is the new concurrent multi-path transfer extension for the widely-deployed Transmission Control Protocol (TCP). Of course, having multiple and possibly highly dissimilar paths for transmission is a challenge for the management of the send and receive buffers, since optimal throughput is desired with a reasonable allocation of the limited memory...
The paper considers the problem of proactive caching (or replication) of content in a collection of caches which can form a group and collectively satisfy content requests of their users (clientele); such caches can be the ones associated with close-by base stations. Under significant user similarity, avoiding caching the same content in multiple locations within the group and leaving room for more...
One of the most profitable and emerging high-tech markets is the one that involves games for PC and consoles; a market that is growing year by year and that is rapidly evolving. Several big game corporations are implementing now the remote video streaming through the domestic network between two devices; a feature that regards not only PCs but also consoles. This paper investigates one of the main...
Video on Demand (VoD) services like Netflix and YouTube account for ever increasing fractions of Internet traffic. It is estimated that this fraction will cross 80% in the next three years. Most popular VoD services have recommendation engines which recommend videos to users based on their viewing history, thus introducing time-correlation in user requests. Understanding and modeling this time-correlation...
Video streaming traffic over the Internet has significantly grown in the recent years. Adaptive video streaming control systems are employed to provide the best user experience given the user device and the network available bandwidth. The control goal is to maximize the video bitrate while avoiding playback interruptions. In this paper, we present a complete and accurate model of a generic adaptive...
Satellites give exceptional points of interest, for example, remote scope with fast sending, separation lack of care, transmission capacity on interest, safety to physical debacles, and offering broadband connections. TCP has been produced for wired systems that have a lower delay and a low piece mistake rate. It is the most usually utilized transport layer convention as a part of the Internet and...
This paper present an analysis of live internet traffic and development of an Adaptive Policing Algorithms to control burst traffic based on fitted traffic model. Objectives of this research is to characterize inbound IP-based campus internet traffic, then traffic is fitted to 2-parameters Cumulative Distribution Function (CDF) traffic model. A Percentage level Policing and algorithm is developed...
The vast majority of Internet traffic is carried by content delivery networks. A high potential to bring content even closer to consumers and to reduce energy cost is achieved by the nano data center (NaDa) concept that has been proposed in recent work. In this approach the capacity available on small devices such as home gateways is used to support content delivery in an hierarchical caching system...
Nanosatellites offer a solution to provide Internet access in areas where there is no ICT infrastructure, such as rural and remote areas, keeping low construction and maintenance costs. A nanosatellite constellation is composed of a certain number of nanosatellites distributed in one or more orbital planes. In most cases, this network cannot ensure an end-to-end connection between sources and destinations,...
With the development of satellite communication technologies and user requirements for pervasive network access, there is a trend to integrate satellites into the terrestrial network infrastructure. Such kind of satellite-terrestrial network is often used for content delivery services as satellites are with wide-area coverage. In terrestrial networks such as Internet, in-network caching has been proved...
Real-time video communications has been incorporated into many instant communication tools such as ichat, Skype, QQ, etc. Real-time video communications has low delivery delay requirement, which imposes great challenge to the provisioning of such services. To address this problem, in this paper, we propose a selective redundant transmission mechanism to support real-time streaming on multi-interface...
Increase in size and complexity of web pages has challenged the efficiency of HTTP. Recent developments to speed up the web have resulted in two promising protocols, HTTP/2 (RFC 7540) at the application layer and QUIC (multiplexed stream transport over UDP). Google servers are using HTTP/2 and QUIC whereas other major sites like Facebook and Twitter have begun using HTTP/2. In this paper, we compare...
To ensure the low end-to-end (E2E) delay for tactile internet, short frame structures will be used in 5G systems. As such, transmission errors with finite blocklength channel codes should be considered to guarantee the high reliability requirement. In this paper, we study cross-layer transmission optimization for tactile internet, where both queueing delay and transmission delay are accounted for...
The control of excessive downloads by rogue users in organizational LANs is the subject of this work. Two mechanisms have been used in order to accomplish this. The first mechanism, is TCP rate control (TCR), it is a receiver-based flow control technique that can be used to effectively rate limit rogue users' flows, making more bandwidth available to regular users. The second mechanism, admission...
Active Queue Management (AQM) mechanisms have come a long way, with an initial goal to avoid congestion to the recent most focus on reducing queue delay. The benefits of using AQM mechanisms at routers are being thoroughly studied nowadays, mainly to avoid the problem of bufferblaat. Although a lot of work has focused on analyzing the behavior of AQM mechanisms, the nature of traffic used while deriving...
“Four and half billion people around the world still aren't connected to the Internet!” The gap between India's rural and urban areas, both economically and technologically, is enormous. It is quite obvious that the economic imbalance between India's metros and her villages is the most significant reason for miserable Internet adoption statistics currently found in the country's rural areas. People...
Previously, we proposed the active access-point (AP) configuration algorithm for elastic Wireless Local-Area Network (WLAN) systems using heterogeneous APs. This algorithm activates or deactivates APs depending on traffic demands, assuming that any active AP can use a different channel to avoid interferences among APs. However, the number of non-interfered channels in IEEE 802.11 protocols is limited...
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