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Network Function Virtualization (NFV) is enabling the softwarization of traditional network services, commonly deployed in dedicated hardware, into generic hardware in form of Virtual Network Functions (VNFs), which can be located flexibly in the network. However, network load balancing can be critical for an ordered sequence of VNFs, also known as Service Function Chains (SFCs), a common cloud and...
Network Function Virtualization (NFV) is a new paradigm, enabling service innovation through virtualization of traditional network functions located flexibly in the network in form of Virtual Network Functions (VNFs). Since VNFs can only be placed onto servers located in networked data centers, which is the NFV's salient feature, the traffic directed to these data center areas has significant impact...
Prior load balancing solutions for chaining virtualized network functions cause significant control and data plane overheads and demand special requirements on network hardware. In this study, we present the design, implementation, and evaluation of Hash-based Traffic Steering on Softswitches (HATS), a load balancing mechanism that aims at mitigating such drawbacks. The method exploits flow hashing...
The proliferation of mobiles devices, application sprawl, and the ever-increasing data volume generates significant stress on cellular networks and particularly on the cellular core, also known as the Evolved Packet Core (EPC). This is further exacerbated by the deployment of hardware appliances for the implementation of a wide range of network functions (e.g., gateways, mobility management, firewalls,...
Disaster Prevention and Mitigation (DPM) is aimed to help people to prevent and reduce property damage in time. In this paper, we propose a DPM system called Gaia, which collects sensed data, and sends them to a back-end DPM Server with improved performance. Gaia is equipped with double 3G interfaces and Load Balancing mechanisms with Round Robin scheduling to ensure stable transmission. Furthermore...
Speed scaling has been widely adopted in computer and communication systems, in particular, to reduce energy consumption. An important question is how speed scaling interacts with other resource allocation mechanisms such as scheduling and routing. In this paper, we study the interaction of speed scaling with load balancing. We characterize the equilibrium resulting from the load balancing and speed...
The Flemish project Linear was a large scale residential demand response pilot that aims to validate innovative smart grid technology building on the rollout of information and communication technologies in the power grid. For this pilot a scalable, reliable and interoperable ICT infrastructure was set up, interconnecting 240 residential power grid customers with the backend systems of energy service...
We propose an enhancement of OpenADR (Automated Demand Response) communication for flexible and fast ADR aggregation using the TRAP mechanism of newly developed IEEE1888 facility information access protocol. The TRAP mechanism makes it possible for an OpenADR server to push an occurrence of specific event for which the "TRAP" has been previously set by each client. Each client such as an...
Home NodeB is a technology defined by 3GPP organization to realize a home area network. In the traditional structure of Home NodeB technology, one Home NodeB just has one single gateway to transmit each session, and hasn't taken the transmission quality into account. By improving the traditional structure of Home NodeB, this article proposes a new structure based on policy. This structure adds a new...
In massive multiplayer online role playing game, in order to make the virtual world simulate the real world, the server should associate all the events of the virtual roles in the game. The technology of game data caching has been researched. Through the technology the game goods and game events in each client end can be searched rapidly and the massive game goods data in server end can be also retrieved...
Allocating resources in a web server cluster is usually performed nowadays by a cluster administrator. However, due to the dynamics of the Internet as far as the use of resources is concerned, such task may be considered critical and inefficient if accomplished manually. This paper presents an architecture that performs an automatic dynamic reconfiguration using a multi agent system. The conception,...
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