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Managing and allocating available resources are vital in communication networks in order to attain a network design objective while keeping great satisfaction in quality of service (QoS) for all users. Resource allocation in multi-cell system can be described as maximizing of a system utility by allocating transmits power among users and spatial directions. Different resource scheduling algorithms...
Search-Based Software Engineering (SBSE) applies search-based optimization techniques in order to solve complex Software Engineering problems. In the recent years there has been a dramatic increase in the number of SBSE applications in areas such as Software Test, Requirements Engineering, and Project Planning. Our focus is on the analysis of the literature in Project Planning, specifically the researches...
This paper addresses the problem of resource scheduling in real-time ensemble systems. An ensemble system uses multiple simple computational models (called “experts”) to produce its outputs. Real system requirements of ensemble systems (e.g., size, weight, power and cost constraints) often lead to limited availability of computational resources required to support concurrent execution of all their...
We consider the problem of scheduling multiple adaptive streaming video users sharing a time-varying wireless channel such as in modern 3GPP Long Term Evolution (LTE) systems. HTTP Adaptive Streaming (HAS) framework is used by the video users for video rate adaptation. HAS is a client driven video delivery solution that has been gaining popularity due to its inherent advantages over other existing...
With the advent of energy-aware scheduling algorithms, it is now possible to find solutions that trade-off performance for decreased energy usage. There are now efficient algorithms to find high quality Pareto fronts that can be used to select the desired balance between make span and energy consumption. One drawback of this approach is that it still requires a system administrator to select the desired...
All-optical networks have been largely investigated due to their high data transmission rates. In the traditional Wavelength-Division Multiplexing (WDM) technology, the spectrum of light that can be transmitted through the optical fiber has been divided into frequency intervals of fixed width, with a gap of unused frequencies between them. Recently, an alternative emerging architecture was suggested...
We study the resource allocation and management issues related to heterogeneous wireless systems made up of several Radio Access Technologies (RATs) that collectively provide a unified wireless network to a diverse set of users through co-ordination managed by a centralized Global Resource Controller (GRC). We assume that the user devices are multi-modal, which makes it possible for each device to...
In this paper, we consider Quality-of-Information (QoI) aware transmission policies for a dynamic environment. In particular, we focus on the time-varying nature of the observation quality of the environment in practical networks which leads to uncertainty in satisfying QoI requirements specified by end users. The goal of this paper is to meet QoI requests from end users with minimum resources. Specifically,...
The Long Term Evolution (LTE) broadcast is a promising solution to cope with exponentially increasing user traffic by broadcasting common user requests over the same frequency channels. In this paper, we propose a novel network framework provisioning broadcast and unicast services simultaneously. For each serving file to users, a cellular base station determines either to broadcast or unicast the...
PT is a lightweight job scheduler based on client-server architecture with remote interfaces. PTServer, the server-side of PT, is designed as an open service running on the multiprocessor system to collaborate with any PTClient, the client-side of PT, on top of PTComer protocol. In PT, we call once execute of program as a task and several tasks formed into a job. The two functionality PT need to implement...
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...
Social and economic pressures are inducing the proliferation of plug-in electric vehicles (PEVs) in the market. As the power grid has a limited supply of electricity, this problem can be formulated as a resource allocation problem, minimizing costs of charging. In this paper we model the PEV charging problem to minimize the total cost of charging, taking into account distribution constraints. These...
This paper considers the problem of energy-efficient communication in the downlink of a cellular OFDMA network. User scheduling and power allocation are jointly optimized across a cluster of coordinated base stations so as to maximize the weighted sum of the energy efficiencies on the available resource slots under a per-subcarrier power constraint. The asymptotic noise-limited regime is also discussed...
Since video services are expected to constitute a major portion of the mobile downlink traffic, it is important to consider end users' perceptual quality of experience (QoE) for video traffic in the system design and performance evaluation of next generation mobile networks. We present a novel QoE-aware scheduling scheme for buffered video on demand (VoD). Therein, rebuffering is the critical attribute...
Due to the power consumption issue of user equipment (UE), Single-Carrier FDMA (SC-FDMA) has been selected as the uplink multiple access scheme of 3GPP Long Term Evolution (LTE). Similar to OFDMA downlink, SC-FDMA enables multiple UEs to be served simultaneously in uplink as well. However, the single carrier characteristic requires that all the allocated subcarriers to a UE must be contiguous in frequency...
We study resource allocation in cellular systems and consider the problem of finding a power efficient scheduling in an uplink single carrier frequency division multiple access (SC-FDMA) system with localized allocation of subcarriers, that is, the subcarriers allocated to a user equipment have to be consecutive in the frequency domain in each time slot. This problem is discrete and nonconvex, thus...
Grid computing employs resource sharing in heterogeneous computing networks to solve complex computing tasks. To provide suitable performance and response times, the available resources have to be scheduled and coordinated for workflow implementation in the grid environment. Therefore, task scheduling and resource allocation are very important to achieve high performance in grid computing. Game theory...
Joint energy saving resource allocation and user scheduling scheme in orthogonal frequency division multiple access (OFDMA) relay networks is considered. Different from allocating resources for users, we allocate resources for packets in the priority queue. Before resource allocation, a scheduling scheme is carried out to assign different priorities to the packets in the queue to guarantee the fairness...
This work examines a straightforward solution to a problem of space surveillance resource allocation by exploring the application of an optimal algorithm to a subset of the general scheduling problem. Due to the resource constraints of the surveillance resource, there could be some serious conflicts among observation requirements. To solve the problem of conflicts in the work of sensor resources allocation,...
We consider the problem of data gathering from a set of machines deployed arbitrarily in a source field. Machines are assumed to communicate directly with the aggregator (sink) using the allocated radio resource. Since the aggregator has limited radio resources to allocate for machine communications, only a subset of machines can be selected for uplink transmissions. Missing data from unselected machines...
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