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.
A large amount of scientific data needs to be transferred from one site to another as fast as possible in the computational science fields. High-speed data transfer between sites is very important, especially in the Grid computing field, GridFTP has been widely used for bulk data transfer over a wide area network. GridFTP achieves greater performance by supporting parallel TCP streams. Using parallel...
Web caching is widely used to cache resources that have already been used and reuse them in near future. Prefetching, in comparison, is a technique to cache resources that have never been used. The core of prefetching is prediction - predicting which resources might be used in the the near future. Prefetching is a technology that has been actively studied in the recent years. Most of the modern browsers...
Software-defined datacenters consolidate discrete hardware units into pools of abstract resource types that are dynamically allocated to the clients sharing the infrastructure. The allocation needs to be both fair to the clients and also make efficient use of the system resources. Unlike approaches that allocate individual resources independently, we propose a model for making integrated allocation...
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...
Current allocation rates suggest IPv4 exhaustion by approximately 2011. Hence, this paper will lead the way for the acceptance of Internet Protocol version 6 (IPv6) migration in the Philippines using a similar Network Address Translation (NAT) that there is an apparent means to be taken into consideration and NAT IPv6 to IPv4 (NAT64) can be a good choice for computer networks like the Philippines...
Elephant flows in data center networks have a tendency to utilize a lot of bandwidth, leaving latency-sensitive mice flows choked behind them. This causes degradation of application performance running on the network. Therefore, a data center network should be able to not only identify elephant flows, but also offer Quality of Service (QoS) provisioning. SDN makes network operating systems to achieve...
This paper proposes a novel approach for System Level Debug and Performance Evaluation that exploits the signal level and clock cycle accuracy existing in Bus Cycle Accurate hardware IP models along with the advantages of untimed Transaction Level Modeling. The developed toolset can be integrated in SoC simulations in a nonintrusive manner which secretly embeds performance figures and debug information...
Internet traffic has been growing year-after-year for decades, but processing all that traffic through traditional IP routers has become an obstacle to further expansion. Router bypass has been introduced recently to overcome capacity limitations and processing costs of IP routers. With router bypass, a portion of traffic is provisioned to bypass the traditional router and is instead switched by the...
Interactive Connectivity Establishment is the process of establishing a transport connection between two peers behind Network Address Translators. To reduce the session setup delay with the existing ICE process, the concept of Trickle ICE is introduced. With Trickle ICE, peers can communicate individual ICE candidates immediately after gathering. The User Agents supporting this Trickle ICE feature,...
Most of the network monitor systems use a user-level network capture library. The user-level library incurs a large overhead and provides inaccurate and insufficient information for self-adaptive networks. For these reasons, we develop a lightweight built-in network monitor running at Linux kernel level for self-adaptive IoT devices.
In this paper, we propose a method to stream a high quality video with low latency and high bandwidth efficiency. Our method, which is similar to multicast, repeats copying packets in the network using a distinguished address for multiple receivers, so that it can minimize the latency and the bandwidth, and hence is suited for stream a video. This method does not require a relay server. We discuss...
Packet classification has been the core component of current Internet architecture, and ternary content addressable memory (TCAM) has become the de facto standard for performing high-speed packet classification. Unfortunately, TCAM has limitations such as small capacity and high power consumption. Therefore, how to improve memory usage and decrease power consumption are crucial to TCAM-based technologies...
There is a growing demand for mobile networks to support high Quality of Service (QoS) for multiple applications in critical single all IP-based infrastructures. In addition, satisfying end-users' Quality of Experience (QoE) is still crucial. For these reasons, the Third-Generation Partnership Project (3GPP) has deployed a QoS framework for Long Term Evolution (LTE) based networks. However, the users'...
Cloud is driving traffic growth, causing Service Providers to increase capacity and network efficiency. Towards these ends a new type of network is emerging — Data Center Interconnect. Differences between DCI and traditional networks are discussed.
OSPF (Open Shortest Path First) is a routing protocol that helps to improve the performance of networks by calculating the shortest path from a packet start point to each possible destination. This is achieved by assigning costs to each hop in the network, usually based on the speed of the interface between each router, although other metrics may also be used. This paper describes the development...
A real-time multimedia transmission requires the QoS guarantees to preserve the real-time character of the stream. Nowadays, we have several methods for QoS provisioning in IP networks. In this paper we propose a novel method for dynamic network resource allocation using the IP Traffic Flow Description option. Our solution deals with the problem of the trade-off between link utilization and the quality...
This paper shows a novel concept of the Reed Solomon (RS) codec IP generator for produce ten kinds of RS codec including RS(28,24), RS(32,28), RS(36,22), RS(72,64), RS(182,172), RS(204,188), RS(207,187), RS(208,192) [1], RS(255,223) [2] and RS(255,239) for targeting various communication standards and systems which use Reed Solomon (RS) codes. The RS codec IP generator will perform the hardware design...
We consider the introduction of three different methods to signalize which data packets are used to generate each repair packet in systematic coding schemes employing flexible connection setups: a first one based on a mask, a second one on explicitly pointing out the links between the two packet streams, and a third one on sharing the signaling load between both flows. These methods have been evaluated...
The present study has its genesis in a longitudinal project aimed at determining long-term trends in jitter, packet loss and other observables on long-distance Internet paths [1]. The project also documents the challenges faced by users in remote locations with numerous nodes in various Pacific Island nations. This naturally poses the question how one might improve their connectivity. Bandwidth upgrades...
High throughput computing (HTC) systems are widely adopted in scientific discovery and engineering research. They are responsible for scheduling submitted batch jobs to utilize the cluster resources. Current systems mostly focus on managing computing resources like CPU and memory, however, they lack flexible and fine-grained management mechanisms for network resources. This has increasingly been an...
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.