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The network resource allocation in SDN for control applications is becoming a key problem in the near future because of the conflict between the need of the flow-level flexibility control and the limited capacity of flow table. Based on the analysis of the difference of the definition of network resource between SDN and traditional IP network, the idea of the integrated allocation of link bandwidth...
The establishment of a previously non-existent data class known as the Smart Grid will pose many difficulties on current and future communication infrastructure. It is imperative that the Smart Grid, as the reactionary and monitory arm of the Power Grid, be able to communicate effectively between grid controllers and individual UEs. Like most wireless sensor networks (WSN), the data sent by individual...
In this paper, we consider the uplink subchannel and power allocation problem for device-to-device (D2D) and cellular links in the Orthogonal Frequency Division Multiple Access (OFDMA)-based D2D cellular network. This resource allocation problem aims to maximize the weighted sum throughput of D2D links while guaranteeing the minimum rate of each cellular link. The proposed formulation allows non-orthogonal...
Nowadays, the quantity of collected data from many different sources is increasing dramatically. As the traditional on-hand computing resources are not sufficient enough to handle Big data, deploying the processing services into clouds is becoming an inevitable trend. For QoS (quality of service)-aware Big data processing, a specially designed cloud resource allocation approach is required. Presently,...
Optimal resource allocation for cooperative amplify and forward and decode & forward wireless relay networks in which multiple source to destination pairs are assisted by relays is investigated here. Power and bandwidth are the resources which are allocated to sources and relays in the centrally controlled network by the access point or base station. The issue of resource allocation is very stringent...
To provide elasticity for cloud-hosted applications, there is a need to specify the appropriate location of the resources (computing and storage resources) while meeting SLA promises. This paper presents literature review, problem statement and research methodology.
While channel state information (CSI) at the transmitter is critical to the system capacity of multiple input multiple output (MIMO) broadcast channels, its acquisition is practically intricate. This paper offers an alternative and investigates a special MIMO broadcast channel, which exploits the benefit of receiver cooperation and renders it unnecessary to acquire CSI at the transmitter. The cooperation...
This paper aims to design efficient and effective approaches to virtual network embedding (VNE) problem, which deals with the embedding of a requested virtual network (VN) in an underlying physical (substrate network) infrastructure. When the node and link constraints (including CPU, memory, network bandwidth, and network delay) are both taken into account, the VN embedding problem is NP-hard, even...
In wireless mesh network, resource & bandwidth allocation is important for achieve efficient and collision-free rate transmission. Therefore, the wireless mesh network standard e.g WiMAX defines three scheduling mechanisms to schedule time resources in the mesh mode, all of those algorithms are based on time division multiple access (TDMA), such that coordinated centralized scheduling, coordinated...
In today's budget constrained environment the DoD, government agencies, and commercial businesses are seeking ways to maximize resource usage and, thereby, improve mission capacity without increasing spending. Communications is one major area that offers opportunities for such improvement. In particular, mobile communications capabilities enable the establishment of communications connectively without...
Resource scheduling is one of the most important problems in cloud computing. However, it is a big challenge for efficient resource scheduling algorithm design and implementation (since general scheduling problem is NP-complete). Most existing resource scheduling methods of cloud computing only consider task resource requirements for CPU and memory, without considering bandwidth requirements. In this...
Cloud computing has emerged as the computing paradigm that enables the delivery of utility-based IT services to users. The hyper-growth of Cloud computing has led to increased power consumption with significant consequences both in terms of environmental and operational costs. Hence, over the last years, attention has been drawn to optimizing energy consumption at the data center, aimed at the reduction...
In this paper, we consider bandwidth-intensive services for customers that want virtual networks (VN) in a data center environment. In particular, we consider this problem in a temporal context where bandwidth-intensive requests from each VN may arrive randomly at a review point, which may last for a certain duration. Thus, at each review point, the data center network provider must optimally allocate...
Multimedia traffic is expected to be widespread in next generation wireless networks, which will be likely based on Orthogonal Frequency Division Multiple Access. While multimedia content is heavily demanding in terms of network resources, it is also inherently adaptable at the application layer, thereby imposing soft QoS constraints, rather than strict requirements on a specific data rate. In this...
Video streaming accounts today for more than half of the global Internet traffic. Content Delivery Networks (CDNs) are employed to provide scalable and reliable video streaming services. Typically, the delivery systems are provisioned to meet the expected peak demands which are due to time-of-day effects. However, such a sizing strategy may either not be able to handle unpredictable flash crowd scenarios,...
An important challenge of running large-scale cloud services in a geo-distributed cloud system is to minimize the overall operating cost. The operating cost of such a system includes two major components: electricity cost and wide-area-network (WAN) communication cost. While the WAN communication cost is minimized when all virtual machines (VMs) are placed in one datacenter, the high workload at one...
Recently, Orthogonal Frequency Division Multiple Access (OFDMA) transmission technique is applied widely in wireless networks because of its high transmission capacity. The IEEE 802.16 standard has also adopted the OFDMA as its access technique. However, the problem of bandwidth resource allocation in time and frequency is essential for efficient utilization of OFDMA system. In this paper, we proposed...
In order to improve the spectrum efficiency in the femtocell network and mitigate the co-tier/cross-tier interference, we propose a novel graph-theoretic scheme based on coloring algorithm for self-adaptive spectrum resource allocation in femtocells. A dynamic orthogonal spectrum sharing between macrocell and femtocell is utilized in the proposed allocation scheme to reduce the cross-tier interference...
Energy efficiency (EE) is growing in importance as a system design criterion for power-unlimited system such as cellular systems. Equally, resource allocation is a well-known method for improving the performance of the latter. In this paper, we propose two novel coordinated resource allocation strategies for jointly optimizing the resources of three sectors/cells in an energy-efficient manner in the...
Network virtualization platforms must support a variety of network devices and resources so as to accommodate multiple network architectures or applications with different features while the network devices in the platform should be capable of being scaled out for sustainable development. However, this flexibility makes the time needed for virtual network embedding/mapping/assignment (VNE) impractical...
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