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Achieving high-quality voice conference calls over the Internet is a difficult task. Heterogeneous mobile devices and network dynamics must be properly managed by multiparty VoIP systems to ensure a good quality of experience. In this paper, we propose a multiparty VoIP system based on SDN technology that uses both multicast distribution and dynamic stream adaptation to optimize the conference call...
Network visualization enables support and deployment of new services and applications that the current Internet architecture is unable to support. Virtual Network Embedding (VNE) problem that addresses efficient mapping of virtual network elements onto a physical infrastructure (substrate network) is one of the main challenges in network virtualization. The Global Resource Capacity (GRC) is a VNE...
To cope with Internet video explosion, recent work proposes to deploy caches to absorb part of the traffic related to popular videos. Nonetheless, caching literature has mainly focused on network-centric metrics, while the quality of users' video streaming experience should be the key performance index to optimize. Additionally, the general assumption is that each user request can be satisfied by...
Tactile internet requires ultra-low latency and ultrahigh reliability, which bring new challenges to the design of mobile systems. In this paper, we study how much resources are required to ensure the short end-to-end (E2E) delay and high reliability by taking a vehicle communication system as an example, where the E2E delay includes both queueing delay and transmission delay, and the reliability...
Internet traffic reports show that YouTube is one of the major sources of data traffic world-wide. Furthermore, the data traffic shifts from mostly fixed landlines to cellular data connections where bandwidth is sparse and expensive. Previous studies revealed that YouTube uses a user-friendly HTTP Adaptive Streaming (HAS) strategy which sacrifices bandwidth efficiency to increase the average playback...
This paper presents a scalable solution for guaranteeing bandwidth to interactions/communications assuming no information is provided by the applications. The objective is to define and assess what the network can do with so little information both in terms of guaranteeing quality and preventing being throttled by overloads. The suggestion of having applications indicating their needs did not materialize...
Information-Centric Networking (ICN) is a novel paradigm for future Internet architectures. The aim of ICN is to accommodate content distribution within the Internet infrastructure. Named Data Networking (NDN) is one of the most popular ICN proposal. This paper presents a design of QoS-FS, a new NDN's adaptive forwarding strategy with quality of service (QoS). At each node of the network, QoS-FS monitors,...
HTTP has been the protocol for transferring web traffic over the Internet since the 90s. However, over the past 20 years websites have evolved so much that today this protocol does not provide optimal delivery over the Internet and became a bottleneck in decreasing page load times. Google is pioneering in finding better solutions for downloading web pages and they implemented two new protocols: SPDY...
Since several years, satellite communications are playing a remarkable role in telecommunications infrastructures, thus the increasing interest in transporting internet traffic over satellite links. Many technologies such as the deployment of multicast and real-time audio/video streaming application are likely to increase the percentage in the context of TCP traffic in internet. The Transport Control...
TV White Spectrum utilization has become a major concern in the field of communication sector throughout the world. This research paper focuses on utilizing the TV White Spectrum for Wireless Broadband Internet Connectivity (WBIC) on the basis of availability. For reference, a practical scenario has been considered. The scenario represents the TV White Spectrum of Bangladesh Television (National Television...
With most Universities and Colleges adopting the use of e-learning to provide daily activities for learning, google search and other search engines for research, Internet is then referred to be a critical component of success by the researchers, lecturers and students. Analyzing network traffic is usually a challenging task for network administrators due to the types and complexity of traffic. The...
Virtual network operators may distrust each other and require that their virtual infrastructure is not cohosted on the same physical equipment. In this paper, we formulate a virtual network embedding problem that maximizes the total revenue where conflicting virtual network operators utilize distinct physical devices. Virtual links in our model have the option of selecting among a range of discrete...
With the ever increasing number of large scale Internet applications, inter data center (inter-DC) data transfers are becoming more and more common. Traditional inter-DC transfers suffers from both low-utilization and congestion, and traffic prediction is an important method to optimize these transfers. Inter-DC traffic is harder to predict than many other types of network traffic, because it is dominated...
It is obvious that Computer networks are plagued by Internet worms during last years. These worms has bad influence on the quality of internet services. Better development of worms filters is based on a complete vision of its behavior and methods of its spread. Moreover, reactions to attempted infections may slow down the highly infection rate of internet worms. Different factors affect the spread...
Geo-location-based bandwidth prediction together with careful download scheduling for mobile clients can be used to minimize download times, reduce energy usage, and improve streaming performance. Although crowd-sourced measurements provide an important prediction tool, little is known about the prediction accuracy and improvements such datasets can provide. In this paper we use a large-scale crowd-sourced...
In last decade, number of internet users are increasing so as Wi-Fi network usage is also increasing. Users are using Wi-Fi network for the internet facility. Wi-Fi network is a collection of Mobile Users [MUs] and Access Points [APs]. Because of unavailability of smart association techniques, sometimes mobile users are associated to single access point beyond the capacity of the access point, at...
Media Streaming is a multimedia that is sent over a network and played as it is being received by the end users. With large volumes of multimedia data in P2P systems, locating data needs to address a multi-modal retrieval. There are a lot of challenges in achieving QoS in P2P systems such as churn in the systems, free riding problems, bottlenecks etc. In this paper, to achieve high QoS for live media...
Machine-to-machine (M2M) applications are expected to be the main traffic contributors through the Internet of Things (IoT) paradigm. One of the most prevalent communication access technologies is Wi-Fi. While open Wi-Fi hotspots can be easily used by M2M communications of static or mobile devices, this is not the case for private Wi-Fi installations that are normally secured against unauthorized...
The Tor network is currently by far the most popular system for providing anonymity on the Internet. Even though both latency and throughput have been significantly improved in recent years, Tor users still experience variable delays on connecting to servers. Such delays have been shown to be especially harmful for browsing the web and prevent altogether the use of protocols where a certain quality...
Nowadays, Internet video is the dominant internettraffic. DASH is an adaptive video streaming technique introducedto enable high quality video delivery over HTTP. In homenetworks, multiple video streams will compete for bandwidth, thus leading to poor performance and impacting the receivedquality of experience. In this paper we introduce a new techniqueto address this issue at the home network gateway...
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