The presented research deals with (objective) video quality assessment and how it can be used within CDN. In order to guarantee a high perceived video quality an objective video content assessment and management service considering human visual system characteristics, audio-visual content and network impairments is being devised. Within this research aspects of automatic content assessment usin...

The Transmission Control Protocol (TCP) follows the endto-end principle – when a client establishes a connection with a server, the connection is only shared by two physical machines, the client and the server. In current cellular networks, a myriad of middleboxes disregard the end-to-end principle to enable network operators to deploy services such as content caching, compression, and protocol...

Peering between Content Delivery Networks (CDNs) endeavors to ensure that each user is served by an optimal Web server in terms of network cost, even under heavy load conditions. Therefore, a dominant factor for the success of peering between CDNs is to perform load distribution to handle highly skewed loads. In this paper, our approach for dynamic load distribution adopts a request-redirection...

Assignment problem in content distribution networks (CDN) is unsplittable hard-capacitated facility location problem (UHCFLP) because of underlying anycast routing protocol. We extend assignment problem in CDN to multidimensional facility location problem (MFLP). With our devised algorithm, assignment cost considers CPU utilization parameter along with request size and distance between client a...

The Content Delivery Networks (CDN) paradigm is based on the idea to move third-party content closer to the users transparently. More specifically, content is replicated on servers closer to the users, and users requests are redirected to the best replica in a transparent way, so that the user perceives better content access service. In this paper we address the problem of dynamic replica place...

Most major content providers use content delivery networks (CDNs) to serve web and video content to their users. A CDN is a large distributed system of servers that caches and delivers content to users. The first-level cache in a CDN server is the memory-resident Hot Object Cache (HOC). A major goal of a CDN is to maximize the object hit ratio (OHR) of its HOCs. But, the small size of the HOC, ...

Data is growing quickly due to a significant increase in social media applications. Today, billions of people use an enormous amount data access the Internet. The backbone network experiences substantial load as result users. Users same region or company frequently ask for similar material, especially on platforms. subsequent request content can be satisfied from edge if stored proximity user. ...

A wide range of techniques have been proposed, implemented, and even standardized for improving the performance of Web content delivery. However, previous work has found that many Web sites either do not take advantage of such techniques or unknowingly inhibit their use. In this paper, we present the design of a tool called Cassandra that addresses these problems. Web site developers can use Ca...

In today’s content delivery network (CDN), round trip time (RTT) between clients and servers is the most critical performance metric. Most of CDNs assign clients to servers based on RTT. In this assignment, we first employ neural network approach to forecast future RTT between clients and servers based on the past RTTs. Secondly, we experiment with different parameters such as the number of hid...

Adaptive bitrate (ABR) streaming services have spread with advances in the codec, video streaming, and network technologies. For smooth playback ABR services, a player runs an algorithm, which dynamically adjusts of data on basis statuses player. Existing algorithms calculate suitable to maximize quality experience (QoE). However, providing high-QoE increases investment costs content delivery (...