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Grid applications are more and more widely used nowadays. One of the major challenges is to provide a reliable and predictable platform for computations of various kinds. In order to overcome this challenge, Grid management systems such as the virtual resource manager (VRM) implement scheduling and mapping algorithms at level of the local management systems with support for resource reservation in...
Software defined Networking (SDN) such as Open-Flow decouples the control plane from forwarding devices and embeds it into one or more external entities called controllers. We implemented a framework in OpenFlow through which business customers receive higher Quality of Service (QoS) than best-effort customers in all conditions (e.g. failure conditions). In the demonstration, we stream video clips...
Wireless Sensor Networks (WSNs) are anticipated to become the preferred tools of choice for monitoring and controlling power utility assets in the smart grid due to their versatility. However, in some smart grid monitoring applications, data generation rates could fluctuate rapidly due to the sudden occurrence of critical faults or failures in the monitored equipment. As a consequence, critical data...
The tremendous increase in the mobile data traffic has led the network operators to use offloading solutions in Radio Access Technologies (RATs) such as WiFi or smallcells. However, these solutions are not efficient since none of them controls the offloading from a centralized global network view. Current offloading methods are mostly user-based and they do not completely consider the user satisfaction,...
Quality of Service Multicast routing has been classified as an NP-Complete problem. As a consequence, multiple bio-inspired models have been implemented to solve it. Before implementing the bio-inspired models is necessary to select and encoding system. It denotes the way of representing the problem such that the bio-inspired models understand it and can be used to solve it. In this work we present...
To date, there have been many developments in Communications Networks which have resulted in the complex structure of Internetworks. To tackle this complexity and achieve the peak performance and security in such implementations, various network management practices are introduced. The scope of this paper is to study the impact that the novel concept of Bring Your Own Technology (BYOT) will have on...
In this paper, we tackle the problem of resource allocation in Time-Domain Wavelength Interleaved Network (TWIN), which is an optical burst switching solution for metropolitan optical networks. We propose two ways of improving the slot allocation efficiency in such networks: by minimizing the schedule length and by enforcing a cyclical QoS constraint on the allocated slots. We report the detailed...
Intercell interference has been known as a crucial issue in heterogeneous networks where different transmitter-receiver pairs compete for system resources. We solve this problem in two steps. We firstly assign the macrocell user with the optimum number of subchannels, which just guarantee the required quality of service. Then, the remaining subchannels are left to be shared by a large number of small...
Employing recent wireless technologies, body area network (BAN) interconnects the communications between sensors nearby human bodies and outside world. The sensors collect environmental and physiological data with various importance, therefore, the provisioning of quality of service (QoS) for the sensory data in BAN is a critical issue. This paper proposes MM-QoS, which is a multiple level-based QoS...
Network coding-based link failure recovery techniques provide near-hitless recovery and offer high capacity efficiency. Diversity coding is the first technique to incorporate coding in this field and is easy to implement over small arbitrary networks. However, its capacity efficiency is restricted by its systematic coding and high design complexity even though it has lower complexity than the other...
Network virtualization allows the coexistence of multiple virtual networks on a shared substrate network. A virtual network created by a service provider (SP) typically spans across multiple domains that may be managed by different infrastructure providers (InPs). The topology and resource information on each domain is confidential and kept private by the InP. However, a domain-level view is required...
This paper formulates a new QoS model for a tree-based cognitive radio network (CRN) which is under test for communication in mountainous areas. The model takes spectrum quality into account, which results in a more complex spectrum decision involving 3-dimension information: cognitive users, spectrums and their quality for combination optimization making. An optimal algorithm with correctness and...
Cloud computing that was introduced when local facilities could not any more satisfy access demands along with the increase of network bandwidth and diversity of services, breaks constraints of physical deployment and delivers varieties of services in its hardware/software virtualized manner. Being inherited the idea, the NaaS as a new presented research field ever since the cloud computing being...
The main concern in range-free localization is getting the high accuracy despite sensor has irregular radio pattern and implemented in anisotropic network. Nevertheless not much study on how the localization algorithm can deplete the sensors' energy even though its fundamental approach are highly depending on the connectivity among the nodes and anchors. In this paper three range-free localization,...
The Resource Reservation Protocol (RSVP) represents one of the most important protocols in the field of Quality of Service (QoS). Over time different extensions of RSVP have been proposed by the Internet Engineering Task Force (IETF) in order to mitigate the scalability issue of the protocol. The RSVP Bundle extension is such a scalability extension. Most important network simulation tools do not...
In this paper, we design an architecture to implement a QoS system based on OpenFlow. The system can filter malicious packets that have no permission to gain quality of service, and can guarantee scheduling the fastest path for QoS packets in working network. By predicting and estimating current network flows, we implement to assign optimal path for QoS flow without affecting the rest of the normal...
The performance of web service could be influenced when network congestion appears. Methods of service migration can always reduce the communication cost especially when the service is popular and it takes up a lot of network resources. Many essential factors should be taken into account when we make the migration decisions, such as server load, delay, migration cost, etc. There are many strategies...
Internal routing inside an ISP network is the foundation for lots of services that generate revenue from the ISP's customers. A fine-grained control of paths taken by network traffic once it enters the ISP's network is therefore a crucial means to achieve a top-quality offer and, equally important, to enforce SLAs. Many widespread network technologies and approaches (most notably, MPLS) offer limited...
With the quick development of service-oriented network, the services of streaming media and their traffic has become a rather important part in the circumstance of virtual network. However, there hasn't been a unified control mechanism to maintain the qualities of these services. The QoS of streaming media is a great concern of current network, and it'll be vital in future network because of the rapid...
In this paper, we detect two attacks targeting the QoS-OLSR protocol MANET. The Cluster-based model QoS-OLSR is a multimedia protocol designed on top of Optimized Link State Routing (OLSR) protocol. The quality of service (QoS) of the nodes is considered during the selection of the multi-point relays (MPRs) nodes. In this work, we identify two attacks that can be launched against the QoS-OLSR protocol:...
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