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The exponential growth in mobile computing technology has resulted in the form of newer mobile devices with variable features and capabilities. Hence to maximise the utilisation of such devices, the mobile applications also need to be designed with capabilities to address the real-time as well as non-real-time services requirements using virtualization and distributed computing techniques. The prime...
Most flows in the Internet run over TCP and most flows in the Internet are short. These TCP flows are predominantly disadvantaged in networks due to their short time to react to the environment along the flow path. There are arguments proposing TCP to favor short flows to counter such imbalance. It would improve user experience, reduce energy consumption of wireless devices and bring economic benefits...
In this paper, we will show how Medium Access Control (MAC) is responsible for managing access to the communication channel for wired network. To ensure efficient transmission, each system must employ a MAC mechanism to arbitrate access to the shared medium in order to avoid data collisions and the same time efficiently share the transmission bandwidth. The purpose of this article is to provide a...
In today's Internet age, web-based applications are an extremely logical way to disseminate, update, and visualize information. Our modern wired infrastructure and high-speed wireless access points make it possible to access high-bandwidth demanding applications from nearly everywhere. However, in places where infrastructure does not exist, and where information needs to be disseminated over areas...
The paper introduces the EPON network structure and protocol, and its key technologies, including uplink and downlink, ONU automatic discovery, DBA and other technology, gives an application example of EPON. Using the technology to construct the network, have some advantages: cost is relatively low, rate is high, expanded easily, the efficiency of match data business is high, so it become one of the...
Traditional architectural designs are normally focused on CPUs and have been often decoupled from I/O considerations. They are inefficient for high-speed network processing with a bandwidth of 10Gbps and beyond. Long latency I/O interconnects on mainstream servers also substantially complicate the NIC designs. In this paper, we start with fine-grained driver and OS instrumentation to fully understand...
In premium vehicles, the number of distributed comfort-, safety-, and infotainment-related functions is steadily increasing. For this reason, the requirements for the underlying communication architecture are also becoming stronger. In addition, the diversity of todays deployed communication technologies and the need for higher bandwidths complicate the design of future network architectures. Ethernet...
A number of research efforts are made for transmission of real-time traffic over the Ethernet network because of growth of digital media devices. Standardizations of network techniques for real-time traffic over Ethernet are in progress in IEEE 802.1 AVB TG. In this paper, Active MSRP which is based on IEEE 802.1Qat-a bandwidth reservation method-was proposed. In various reservation scenarios, Active...
Recently, more and more services need high quality bandwidth. In order to satisfy those services, high-speed networks are needed. The Task Force team of IEEE 802.3ah set a standard as Ethernet Passive Optical Network (EPON) that is a next generation subscriber access network. IEEE 802.3av developed 10G EPON which has 10 times more capacity than EPON to solve the high quality problem. Research on 10G...
Over the last decade, advances in Internet technology brought about the proliferation of Internet-based multimedia applications, particularly known as Internet Protocol Television (IPTV) services. In the large-scale, heterogeneous, multi-vendor, and increasingly complex and multi-functional IPTV networks, the quality assured provisioning is one of the key challenges to service providers. To support...
Ethernet is an evolving standard, not a static one. It's a family of frame-based networking technologies and communication services offering different communication capabilities and quality of service to distributed applications. Ethernet is becoming more present in critical embedded systems because of the supporting software and hardware ecosystem, and guaranteed growth path supported by different...
Hiding information in network traffic may lead to leakage of confidential information. In this paper we introduce a new steganographic system: the PadSteg (Padding Steganography). To authors' best knowledge it is the first information hiding solution which represents inter-protocol steganography i.e. usage of relation between two or more protocols from the TCP/IP stack to enable secret communication...
Nowadays, most IPTV senders provide all of their multiple streaming channels under IPv4 protocol, in dedicated networks, which are high bandwidth but costly and having geographically limited number of subscribers located relatively close to IPTV senders. Due to the increase of Internet bandwidth, IPTV providers seem to offer incredibly better television standard with HD IPTV. In this paper we adopt...
Ethernet is becoming a common network technology for industrial and factory automation systems and, in recent years, a big effort has been made in enabling real-time communications using Ethernet technology. Many of these systems are complex, extend over relatively large places and/or integrate a significant number of nodes, thus requiring the use of multiple switches (hop). In this paper we look...
Large switched Ethernet networks are deployed in campus networks, data centers and metropolitan area networks to support various types of services. Congestion is usually handled by deploying more switches and installing higher bandwidth link bundles, although a better use of the existing infrastructure would allow to deal with congestion at lower cost. In this paper, we use constrained-based local...
Examining a protocol is necessary in order to identify its advantages and disadvantages precisely. Here we apply UPnP technology on an Ethernet network to evaluate its performance and identify its positive and negative sides. As it is known that UPnP can be run on many media that support IP such as Ethernet, Bluetooth and Wi-Fi. This paper produces an evaluation of UPnP service discovery protocol...
Data Center Networks represent the convergence of computing and networking, of data and storage networks, and of packet transport mechanisms in Layers 2 and 3. Congestion control algorithms are a key component of data transport in this type of network. Recently, a Layer 2 congestion management algorithm, called QCN (Quantized Congestion Notification), has been adopted for the IEEE 802.1 Data Center...
This paper analyzes the performance of Ethernet layer congestion control mechanism Quantized Congestion Notification (QCN) during data access from clustered servers in data centers. We analyze the reasons why QCN does not perform adequately in these situations and propose several modifications to the protocol to improve its performance in these scenarios. We trace the causes of QCN performance degradation...
Modern cars are equipped with an increasing number of electronic systems which encompass comfort, security, and infotainment related features. The complexity of the physical and logical network topology as well as the bandwidth requirements are steadily increasing. Therefore, a bus standard that can handle upcoming application requirements and is suitable for the automotive environment is needed....
U-learning (ubiquitous learning) systems, which deliver learning materials anytime and anywhere, allow learners to watch live lectures on PDAs, tablet PCs and notebook computers via broadband and wireless Internet. These systems have various problems. The USB-based terminal system based on the OSGi(Open Services Gateway Initiative) service platform was designed as a ubiquitous system, in order to...
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