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The increasing demand of global video traffic presents a grand challenge for Internet service providers. This is particularly important for Smart Cities, where the citizens will be surrounded by various multimedia services. The Information Centric Networking (ICN) paradigm has been proposed to handle the vast amount of data, mobility of users, and provide better scalability and efficiency in terms...
This paper proposes a method of TCP multi-pathization for IoT network by SDN. The method distributes packets according to the congestion between paths and IP packet length. Since it is performed over SDN, no changes of existing protocols and devices are required. The authors implement the method by actual IoT devices and evaluate QoS by experiment. The results of the experiment show that the TCP throughput...
Multipath TCP (MPTCP) has gained great attention by the researchers and network application developers due to its features providing better bandwidth utilization and higher reliability recently. Utilizing MPTCP in the datacenters provides performance gain to the applications. If the underlying network has Software Defined Networking (SDN) architecture, the routing of the MPTCP subflows can be specialized...
The emergence of 5G wireless and IoT (Internet of Things) technologies, as well as the continuous evolution of cloud computing is driving the need for easy and on-demand creation of end-to-end network services. We have developed an integrated system called the end-to-end network service orchestrator, which realizes seamless service orchestration across multiple on-premises and cloud infrastructures...
Technicolor has been investigating how Mixed Reality technology could impact the future of home entertainment. We have designed and implemented a system to extend a standard TV experience with AR content, using a consumer tablet or a headset. A virtual TV mosaic is displayed around the TV screen and used as a GUI to control both TV and MR content. Using this interface, the user is able to switch TV...
The current ecosystem of network elements, such as switches and appliances, is largely dominated by devices supplied and sold with a bundled operating system, and software dedicated to manage the device's forwarding hardware, however, these platforms are not open-source and cannot be arbitrarily customized, and there is no cost transparency or flexibility in choosing software different to the bundled...
Long transactions, high concurrency, and frequent activity situations occur in many areas. The intermediate process of long transactions in the process of execution is more, in the process, therefore, can not avoid frequent access to the data, the system overhead of the data access process is relatively large, which reduces the efficiency of the system and increase the pressure of the server. The...
This paper presents comparison of GaN based switched-tank converter (STC) and traditional cascaded voltage divider (CVD) dc-dc converter for data center applications. The operation principle of two kinds of converters are presented. And simulations with Saber are both conducted to verify the proposed comparison, respectively. The system volume and efficiency are fully compared via GaN based device...
Virtual reality applications make use of 360-degree panoramic or omnidirectional video with high resolution and high frame rate in order to create the immersive experience to the user. The user views only a portion of the captured 360-degree scene at each time instant, hence streaming the whole omnidirectional video in highest quality is not efficient. In order to alleviate the problem of bandwidth...
With the development of NFV (Network Function Virtualization) paradigm, networking functions would gradually move from specialized and proprietary hardware to open-source software run over a virtual machine (VM) deployed on commodity hardware. Open vSwitch (OVS) is the most prominent open-source solution implementing a virtual switch, while DPDK (Data Plane Development Kit) is a set of specialized...
OpenFlow/Software-Defined Networking (SDN) is a new networking paradigm that virtualizes network infrastructure by decoupling the control and data plane logic of traditional network devices. The controller of SDN has the overall look about network topology and hence provides flexibility to network operators to implement its own routing approaches. However, it could not control the way client works...
Multiple SDN applications can make several harmful interferences unintentionally, although each individual application may be properly developed. This paper proposes a Multiple SDN Applications Interference Detector (MSAID). To bridge the gap between the source code of applications and the actual interferences, we leverage symbolic execution and constraint solving to obtain how the event handler handles...
Determined by the development of new types of routing protocols, the process of designing of the new topologies had radically changed the last years. At the modern time this designing process should take into account all the existing services and also the ones that could be implemented in the future if we keep in mind the fact that at present we witness an amazing development of the traffic generated...
We analyze the MX/G/1 queue in the framework of Markov decision processes (MDPs). The service times become known upon arrival, and each job incurs a cost according to a given cost function. The value function is a central concept in MDP theory as it characterizes the value of the system's state with respect to future developments. We derive compact expressions for the generating functions for general...
Software-Defined Networks (SDN) is an emerging area that promises to change the way we design, build, and operate network architecture. It tends to shift from traditional network architecture of proprietary based to open and programmable network architecture. However, this new innovative and improved technology also brings another security burden into the network architecture, with existing and emerging...
This paper discusses how to add privacy features to the Janus WebRTC media server and gateway. In order to do so, we embrace a standard approach, by leveraging work currently ongoing within the IETF PERC working group. PERC stands for Privacy Enhanced RTP Conferencing and is aimed at enabling centralized real-time conferencing in a scenario where the central media forwarding entity is not required...
Cisco DevNet Always-On APIC-EM Sandbox is useful in the phase of learning about software-defined networking, allowing to perform experiments, but without the possibility to change the topology the extent of development is limited. In this paper a Cisco APIC-EM SDN Controller was installed in a private cloud orchestrated by OpenStack. The major objective was to create a virtualized testbed, consisting...
The DOME MicroDataCenter, developed by IBM Zurich Research and ASTRON Netherlands Institute for Radio Astronomy, brings together the embedded and data-center computing worlds, resulting in the densest general-purpose computing capability with top energy-efficiency. This paper summarizes the entire 5 year project and illustrates how we went from an initial idea through obtaining funding for our small...
Although multicore chips are quickly replacing uniprocessor ones, safety-critical embedded systems are still developed using single processor architecture. The reasons mainly concern predictability and certification issues. This paper proposes a scheduling framework for handling Integrated Modular Avionics (IMA) on multicore platforms providing predictability as well as flexibility in managing dynamic...
A novel design of pole mounted switch controller is introduced in this paper, embedded Linux operating system was used to enrich the functions of the pole mounted controller and to enhance the intelligence of the controller. Software structure of this novel designed controller is presented in detail. Multiple processes design method was applied to split the software application into 3 processes, namely...
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