The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Decentralized systems, such as overlay networks or content delivery networks, form a virtual network on top of a physical network leading to inefficiencies in handling network traffic as physical locations are not considered. Therefore, this work investigates, analyzes, and evaluates two feasible network locality metrics for decentralized systems to overcome such inefficiencies. Furthermore, those...
With Netflix and YouTube accounting for more than 50% of North American, fixed network peak download traffic in 2015, video streaming is a significant source of Internet traffic. Dynamic Adaptive Streaming over HTTP (DASH) is a recent standard for live and on-demand video streaming services, where clients adapt their behaviour on-the-fly to match regularly updated estimates of network capacity. Consumer...
Explicit Congestion Notification (ECN) lets a bottleneck's Active Queue Management (AQM) mechanism inform an endpoint about congestion without having to drop a packet. A recently proposed sender-side modification called Alternative Backoff with ECN (ABE) enables reduced latency while maintaining good utilization with ECN. However, under certain circumstances ABE can produce a degree of unfair behavior...
The share of video streaming in the Internet traffic is expected to reach 80% by 2019. To deliver these video services in possibly strained settings and to meet with the users requirement of anywhere and multi-screen experience, HTTP Adaptive Streaming (HAS) is gaining momentum. However, TCP-transport of HAS flows is known to entail a number of issues both on Quality of Experience (QoE) and network...
In wireless networks, the technique of caching contents cooperatively in user equipments (UEs) and base stations (BSs) enables to improve the performance of data access. In this paper, we consider cluster based cooperative device-to-device (D2D) caching enabled network and formulate the caching problem to minimize content retrieving delay. To achieve this, we develop a content caching and replacement...
Good user interface (UI) design is key to successful mobile apps. UI latency, which can be considered as the time between the commencement of a UI operation and its intended UI update, is a critical consideration for app developers. Current literature still lacks a comprehensive study on how much UI latency a user can tolerate or how to identify UI design defects that cause intolerably long UI latency...
Content Centric Networking (CCN) is one of the Future Internet architectures that aims at improving content distribution and retrieval, where content is requested by name rather than IP address. Each content is partitioned into small units, namely chunks. In CCN, the consumer sends Interest packet in order to get a chunk of Data. Upon successful reception of the requested chunk, the consumer sends...
With the spread of high-performance mobile terminals that include sensors, participatory sensing is attracting attention for collecting sensor information using smartphones. Although there are two key advantages to this approach, its low cost and wide range of sensing, they come at the tradeoff of both the battery and storage. Therefore, efficient collection is required. There is also a challenge...
NDN (Named Data Networking) as one approach of the Content-Centric Networking (CCN) architecture, proposed by Jacobson, 2006, conceptually, has some advantages compares to the current Internet technology which build based on host-to-host TCP/IP protocol stack. However, technically, we have to examine the NDN approach, beside to prove the concept, also to get as much as able the opportunities of improvement...
This paper will discuss about transmission of multimedia content in limited capacity network (up to 5 Mbps), especially to study about the impact of background traffic towards multimedia content delivery quality in a limited capacity network. Observation methods proposed in the study include measurement of limited capacity network, background traffic modeling, and simulating the network to observe...
Quality of Service is an important thing in maintaining the performance of the service to the customer. Not only for marketing purposes, the quality of services can also bridge the gap between the promise given by the service provider and what the customers get. This study aims to get the quality of service for internet data usage of several mobile operators in the city Samarinda. The study was conducted...
Reverse proxies are key performance elements of a content distribution network (CDN) and operate as intermediaries between client and upstream (or origin) server traffic. A typical reverse proxy server aims to distribute user workload, more or less equally, among multiple upstream servers. To keep the pace with the growing demand for content, CDNs regularly expand their capacity by adding extra upstream...
In this paper, we proposes a method to analyze and evaluate the quality of experience (QoE) in mobile terminals using “big data”. The feature parameters of key quality indicator (KQI) are obtained from operators and quantized through the use of a scoring system. Then the scores of customer experience indicator (CEI) and QoE are calculated based on our proposed analytical model. In combination with...
Peer to peer networks offer an extensible framework for supporting video streaming service over the Internet. P2P networks efficiency highly depends on peers' contribution. In practice, some peers only use the service, but share few resources or do not share any resources. This phenomenon is called free riding which seriously affects the P2P networks efficiency. So, in order to encourage the peers...
Routing in Delay-/Disruption-Tolerant Networking (DTN) has long been recognized as a challenging research topic. The difficulty lies in the fact that link intermittency and network partitioning, possibly coupled with long delays, prevent the use of Internet solutions based on an up-to-date comprehensive knowledge of network topology, as communicated by routing protocols. In the literature on DTN routing,...
Implementation of network coding (NC) is expanding to a diverse set of networks due to the flexible design provided through its use, enabling a trade-off between robustness and spectral efficiency. In this paper, we investigate the application of NC in delay tolerant networks (DTN) through the use of software defined radio (SDR) nodes. We specifically focus on a deep space network scenario with large...
Software Defined Network (SDN) is able to provide better network management and higher utilization for data center. However the centralized control of entire network may trigger large overhead and limit the scalability of control plane. In this paper, we propose an enhanced mechanism of elephant flow scheduling in SDN-based data center. The mechanism can efficiently reduce the overhead and improve...
HTTP adaptive streaming is used by a numerous video streaming services in the internet. It facilitates video streaming through heterogeneous network, without the need of a dictated streaming infrastructure. The benefit of HTTP Adaptive Streaming, compared to classical HTTP, is the reduction of the interruption, i.e. stalling event, and the use of bandwidth. This technology tries to adapt the video...
In spite of the improvement brought by recent research on load balancing in video on demand (VOD) system, it still as an actuality problem. In this paper we propose a payoff-based dynamic segment replication policy called P-DSR which instead of replicating the entire video file, it divides it into several segments then selects the segments with the highest payoff which can rebalance load faster and...
As the growth of mobile data traffic places significant strain on cellular networks, plans for exploiting under-utilized network resources become increasingly attractive. In this paper, we propose, design, and evaluate a data offloading architecture, where mobile users are offloaded to mesh networks, which are built and managed by residential users. Such networks are often developed in the context...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.