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Network virtualization is considered to be not only an enabler to overcome the inflexibility of the current Internet infrastructure but also an enabler to achieve an energy-efficient Future Internet. Virtual network embedding (VNE) is a critical issue in network virtualization technology. This paper explores a joint power-aware node and link resource allocation approach to handle the VNE problem with...
Allocating bandwidth to maximize service flows with fair treatment of all the services is a key issue in network dimensioning. In such applications, the so-called Max-Min Fairness (MMF) solution concept is widely used. It is based on the worst service performance maximization with additional regularization by the lexicographic maximization of the second worst performance, the third one etc. The basic...
In this paper, we consider the problem of resource allocation in two-tier networks taking into consideration nondense femtocell deployments. The following limitations can be remarked from the prior work in the field of resource allocation: (1) resources are underutilized due to the equal power distribution in macrocell, (2) access to public users in femtocells is restricted to avoid depriving own...
With the introduction of Long Term Evolution (LTE) cellular networks, the spectral efficiency should be maximized according to the required high data rate. However, any increase in spectral efficiency will lead to an undesirable increase in power consumption, and thus lower energy efficiency will be obtained. Therefore, a new problem in radio resource allocation is addressed to manage the bandwidth...
In this paper, we have proposed secondary user (SU) resource assignment scheme for a multi-hop cognitive radio network. In Multi-hop networks, since each link has different SNR because of their different distance between the stations and some other circumstance, it degrades the end-to-end throughput. To overcome this problem, we have proposed to give a channel priority in each link based on the link...
Cloud robotics is currently driving interest in both academia and industry, since it would allow robots to off-load computation intensive tasks, combine with multiple robots and even download new skills. Bandwidth allocation is the fundamental and dominant task for resource sharing among users in cloud robotics. However, many technical challenges are still outstanding, since incast congestion happens...
Virtual Content Aware Networks (VCAN) constructed as overlays over IP network substrate is considered an efficient solution to incrementally introduce content awareness at network level. Planning, mapping on top of multiple domains IP network and optimizing these VCANs is still an open research issue. This paper is focused on intradomain planning and VCAN mapping, with QoS guarantees, thus continuing...
This paper discusses prospects and challenges of optical networking designed to meet exponentially growing demands of data traffic. We discuss both intra and inter data-center networking. For intra-datacenter networking, a single arrayed waveguide grating router based optical switch offers fully connected all-to-all parallel interconnection amongst thousands of racks to achieve high throughput and...
We consider an admission control problem and adaptive resource allocation for running mobile applications on a cloudlet. We formulate an optimization problem for dynamic resource sharing of mobile users in mobile cloud computing (MCC) hotspot with a cloudlet as a semi-Markov decision process (SMDP). SMDP is transformed into a linear programming (LP) model and it is solved to obtain an optimal solution...
In cloud computing the allocation and scheduling of multiple virtual resources, such as virtual machines (VMs), are still a challenge. The optimization of these processes bring the advantage of improving the energy savings and load balancing in large data centers. Resource allocation and scheduling also impact in federated clouds where resources can be leased from partner domains. This paper proposes...
For lack of bandwidth allocation (BA) algorithm in IEEE802.16 wireless metropolitan area network standard, in this paper a non-cooperative game and generalized Vickrey auction based BA algorithm is presented. The bandwidth reallocation process between the BS and the accessing request user is modeled as a DAMA (Demand Assigned Media Access) game, where the players maximize their utilities. Then the...
A new fully decentralized dynamic fractional frequency reuse (FFR)-based scheme for cellular OFDMA networks is introduced. FFR is a technique to mitigate inter-cell interference to improve the throughput of interference-limited users on the cell edge, to the expense of the rest of the cell's users and the aggregate throughput. The proposed scheme aims to limit the FFR-incurred loss of the center users'...
In this paper we extend weighted max-min fairness by adding strategies that enable users to modify their fair allocation by sharing and borrowing bandwidth with other users. There is also a mechanism to reclaim bandwidth a user has previously shared. The main focus of our investigation is to develop a method for allocating link bandwidth between multiple users on multiple links of a communication...
The widespread use of heterogeneous wireless network technologies and their integration with multi-mode terminals enable users to be associated to the best available networks according to user preferences and application specific requirements. We study a user-centric quality of experience based resource allocation problem with several operators, several types of users and different classes of services...
The growth in energy demand coupled with global warming provide new trends in communication systems known as green radio. In this paper, we focus on energy minimization for powerline communications. The transmitted consumed energy is minimized in the case of point to point transmission link using parallel channels. The transmission of data, that corresponds to a finite number of bits, can be performed...
Stream processing systems must handle stream data coming from real-time, high-throughput applications, for example in financial trading. Timely processing of streams is important and requires sufficient available resources to achieve high throughput and deliver accurate results. However, static allocation of stream processing resources in terms of machines is inefficient when input streams have significant...
When users submit new queries to a distributed stream processing system (DSPS), a query planner must allocate physical resources, such as CPU cores, memory and network bandwidth, from a set of hosts to queries. Allocation decisions must provide the correct mix of resources required by queries, while achieving an efficient overall allocation to scale in the number of admitted queries. By exploiting...
Recently, strategic behavior modeling has attracted much attention of the researchers focusing on designing protocols in the area of overlay multicast networks. The motivation lies in the fact that the overlay peers are selfish in nature and they typically belong to different administrative domains. In this paper, we model the strategic behavior of the selfish peers by leveraging the rich theory of...
Service-oriented architectures (SOA) provide application systems the flexibility and cost-savings of dynamically composing workflows from reusable services. However, current SOA frameworks do not provide support for real-time workflow planning and execution. The goal of the RT-Llama SOA middleware framework is to address these new requirements. It works both at the service-level, by enhancing existing...
Cooperation among mobile nodes during establishment of a cellular connection can improve the performance of the network by lowering the transmission power and increasing throughput of the end nodes. Multipath routing is one way for such cooperation by using multiple parallel paths between source and destination nodes, where the main data stream is split into streams of lower data rates and routed...
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