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Pervasive games integrate physical and social aspects of the real world into a unified gaming experience, where virtual and physical game elements co-exist. The blending of game content with the context of the physical environment has been recognized as an important element that increases the enjoyment, interest and engagement of players in in this game genre. To address this requirement most pervasive...
A fundamental problem in QoS (quality-of-service) routing is the multi-constrained path (MCP) problem. The MCP problem used the shortest path with respect to a single edge weighting function as an approximate solution to MCP. For solving MCP problem was offered a lot of methods. One of these methods is based on Lagrangian Relaxation. These algorithms allow finding the shortest paths from the source...
Software Defined Networks (SDN) is a new technology providing a programmable network by separating control and data planes of computer networks. SDN technology can provide an increase in the performance of Internet applications by implementing routing approaches specific to such applications. In this paper, we propose a server and end-to-end path selection approach for a content distribution network...
Tenants assume various roles in the enterprise data center networks, requiring a differentiated Quality of Service (QoS), data quality and isolation guarantees among them. Traditionally, data storage and processing are handled in either distributed, or centralized manner. While distributed execution offers a higher horizontal scalability, it often comes with a trade-off of lack of centralized control,...
This paper considers the optimal energy efficient association for HetNets by applying almost blank subframes (ABSs) techniques. Aiming at maximizing energy efficiency (EE) without the quality of service (QoS) constraints, we obtain a closed-form optimal solution, which indicates that the optimal choice of blank resource block (RB) fraction for EE maximization is binary without individual user QoS...
This paper studies the effects on user welfare of imposing network neutrality, using a game-theoretic model of provider interactions based on a two-sided market framework: we assume that the platform-the last-mile access providers (ISPs)-are monopolists, and consider content providers (CPs) entry decisions. All decisions affect the choices made by users, who are sensitive both to CP and ISP investments...
Today there are forceful work streams that aim at realizing the “5th generation of wireless/mobile broadband”. This paper intends to analyse the emerging management challenges for the 5G era towards multi-service provision through optimal end-to-end resource slicing in virtualized infrastructures. Also, this paper proposes essential advances in the management intelligence, in order to achieve constantly...
Traditionally, network management tasks manually performed by system administrators include monitoring alarms based on collected statistics across many heterogeneous systems, correlating these alarms to identify potential problems or changes to management policies and responding by performing system re-configurations to ensure optimal performance of network services. System administrators have a narrow...
Spectrum sensing is one of the most mandatory mechanisms of Cognitive Radio (CR) to find the unused Spectrum. Spectrum sensing has renewed on a very active scrutiny area over recent years. As it is one of the most important tasks performed using cognitive radio and the implementation of the other functions of the cognitive radio is based on the spectrum sensing. So it is mandatory for cognitive radio...
Long Term Evolution (LTE) is one of the standards in 4G cellular technologies which offer different data rates for voice, video conference and other services. The Orthogonal Frequency Division Multiple Access (OFDMA) is a well suited multiple access scheme of LTE for supporting variable bit rate services. OFDMA-based Cellular communication network face serious challenges in providing good Quality...
Dynamic presentation of tensor model for multipath routing with QoS guarantees over the multiple parameters proposed. Expressions for different queuing systems modeling state of the network router interface used for representing the average packet delay as time-varying function. Conditions of ensuring QoS for the set of parameters as packet transmission rate and average delay obtained. The novelty...
In this paper proposed realization of resource blocks allocation in LTE downlink in the form of nonlinear optimization. In using improved model it is possible to avoid the control variables Boolean nature, which has a positive impact on the computational complexity of final technological solutions for resource allocation. Problem of RAT 1 was reduced to the problem solution of nonlinear optimization...
The paper presents the flow-based queue management model on telecommunication networks routers based on optimal flow aggregation and packets distribution in queues. The novelty of the model is that with flows distribution in queues it is carried out its aggregation based on flows and queues classes comparison within the analysis of the set of classification indicators.
Control on Quality of Service (QoS) appears to be one of the main requirements in Machine-to-Machine (M2M) communications. The dynamic QoS control is critical for applications like video surveillance, transportation services, and industrial control. In this paper, we study the requirements to generic functionality that allows dynamic configuration of specific QoS parameters on M2M connections and...
This paper is concerned with the optimal association of user equipments (UEs) to the base stations, which are either a macro base station or pico base stations, for the sum rate utility in a cooperative heterogeneous network (HetNet). This is a nonconvex combinatorial problem. By recasting the problem as a d.c (difference of convex (d.c.)) program, the optimal association solution is sought by d.c...
Recent studies have demonstrated the effectiveness of proactive resource allocation under the assumption of perfect prediction of the user's future data rate. In this paper, imperfect rate prediction merely based on the context information including large-scale channel gains of users and statistical information of system available resources is considered. Under the outage-based quality of service...
In this paper, the quantity of interference on the primary user (PU) caused by the secondary user (SU) is investigated. An underlay spectrum sharing network is considered, where the different scenario of PU activity is modeled based on the duty cycle of PU channel. PU channel is classified into several activities according to the application of primary services. The interference to PU is observed...
Storage QoS is getting more important to host big data and data intensive computing applications in the cloud. However, many distributed/file storage systems do not implement end-to-end performance control, and an abstraction layer of the storage device like the object storage device serves requests in a best effort basis. Thus the QoS granularity and accuracy seen in applications are rough and possibly...
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