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While Internet traffic is currently dominated by elastic data transfers, it is anticipated that streaming applications will rapidly develop and contribute a significant amount of traffic in the near future. Therefore, it is essential to understand and capture the relation between stream and elastic traffic behavior. In this paper we focus on developing simple yet effective approximations to capture...
Recently, as shown by different studies, the video traffic dominates the current traffic composition of the Internet. Nowadays, the video traffic represents more than 65% of global traffic and in the Internet forecasts, it will reach 79% in 2018 in both wired and wireless environments. Hence, major content providers such as Netflix, Youtube, Hulu, and Vudu are leveraging HTTP-based multimedia transmission...
The paper compares two formulations of dynamic power management in energy-aware computer networks. In the first approach the only criterion is energy consumption, in the second there is an additional one - the quality of service. It is shown, that the second approach is appropriate when the routing problem with fixed demands is inadmissible. Fortunately, by some optimization modeling transformations...
Providing guaranteed services in the Internet has become extremely essential to fulfill the requirements of the Internet users. With an increase in the number of users and demand for multimedia applications like video streaming, VoIP and video conferencing, larger bandwidth requirement increases drastically since such applications are very sensitive to delay, packet loss, and jitter. In such an environment,...
Modern Internet applications rely on rich multimedia contents making the quality of experience (QoE) of end users sensitive to network conditions. Several models were developed in the literature to express QoE as a function of measurements carried out on the traffic of the applications themselves. In this paper, we propose a new methodology based on machine learning able to link expected QoE to network...
The portion of video traffic in the total amount of Internet traffic has been increased. As the number of users and volume of content are increased, the content providers had been suffered for processing and transferring media and they have adopt CDN technology into their service so that their burden can be alleviated. The CDN technology can be classified into three different types; ‘server farm CDN’,...
Previously dominating research on the Internet Quality of Service (QoS), focused on network performance, has now been shifted towards the customer experience. This paper addresses Quality of Experience (QoE) management issues in the future Internet. We provide a brief overview of QoE metrics and assessment methodologies, and discuss potential relationships between the QoE and network performance parameters...
Research institutes and companies are focusing intensively on Complex Event Processing, Event Stream Processing, Information Flow Processing and Surprise Event Detection methods and algorithms. This phenomenon is intensified by the rapid evolution and spreading in practice of the Internet of Things services. A huge amount of data is created continuously by the physical and logical sensors embedded...
Mobile operators are today facing the daunting challenge of providing cheap and valuable services to ever more demanding customers. As a matter of fact, mobile standards have not yet really addressed this expectation of open, cheap and flexible web oriented internet access. As an alternative, we introduced an IP-centric QoS model mainly inspired by IP policies commonly found in fixed networks. In...
For the purposes of efficient network resource management and QoS (Quality of Service) support of different video services, this paper proposes a fine grained classification scheme for Internet video traffics based on hierarchical clustering. We study a number of QoS and network resource requirements related statistical features of some typical video applications and validate their effectiveness in...
IIoT (Industrial Internet of Things) cloud applications require reliable, fault-tolerant networks, supporting real-time guarantees and allowing interaction with other applications already existing in the datacenter. The Software Defined Networks (SDN) paradigm is especially suited for the management of the network cloud because of its fine grained admission control and the management flexibility provided...
Connectivity clearly plays an important role in Internet of Things (IoT) solutions, and the efficient handling of mobility is crucial for the overall performance of IoT applications. Currently, the most widely adopted protocols for IoT and Machine to Machine (M2M) environments, namely MQTT, CoAP or LWM2M, are directly dependent on the TCP/IP protocol suite. This suite is highly reliable when using...
To support voice calls vital to mobile users and carriers, 4G LTE cellular networks adopt two solutions: VoLTE (Voice Over LTE) and CSFB (Circuit-Switched FallBack). In this paper, we disclose that both schemes are harmful to mobile users from a security perspective. The adoption of the latest VoLTE allows an attacker to manipulate the radio resource states of the victim's device in a silent call...
Video traffic, which represents an increasing fraction of the Internet traffic, requires end-to-end quality of service (QoS) guarantees for inter-domain routing. However, providing such guarantees remains a challenge essentially because it requires a strong and fair cooperation among the different network operators or Autonomous Systems (ASes), crossed by the traffic. Having a single AS on the path...
Quality of Service (QoS) is imperative for multimedia real-time applications to ensure optimal use of the communication channels and deliver Video Conference (VC) with acceptable quality. Several algorithms have been proposed in the literature to optimize the use of the bandwidth when both VC and Internet browsing are operating at the same time. In this paper we apply three of these methods, Guaranteed...
In the last decades, along with the continuously evolving of the Internet Protocol-based network, numerous Internet programs that have played critical roles in the current technological era are being developed inclusive of interactive applications. Nevertheless, the transmission performance and user experience of these instant services that require high bandwidth or low latency may suffer when serious...
Network Neutrality states that users should have equal access to all Internet content and that Internet Service Providers (ISP) should not unfairly block or degrade access to any site. The Network Neutrality controversy has been in the spotlight for several years due to political, economic, social, and technical implications. While proponents argue that enforcing Network Neutrality by law is important...
The IP Multimedia Subsystem (IMS) is a kind of Multimedia business form and it is an architectural framework for delivering IP multimedia services. In order to increase flexibility and reliability, in this paper we propose a different perspective which maintains the existing IP Multimedia Subsystem (IMS) based signaling platform while processing flow via distributed SDN controllers. Software Define...
Green Internet is becoming a major concern recently. The main concept of it is to improve energy efficiency in the Internet for reduction of unnecessary energy consumption. Generally, energy consumption of data network equipment in the Internet is unknown although they use a substantial amount of energy. In this area, there is a lack of deeper related studies with a special focus on wired networking...
Network Neutrality principle states that in order to preserve the openness of the Internet, the end users should have equal access to all the content on the Internet, and the Internet Service Providers (ISP) should be prohibited from discriminating or blocking the content from any of the application providers. The Network Neutrality issue is important as it can have a considerable impact on the future...
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