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Industrial systems demand high degree of reliability and real-time requirements in communications. To meet the stringent real-time performance requirements of control systems, there is a critical need for estimation system schedulability before system running. Concerning this issue, in this paper, we propose a supply/demand bound function analysis approach based on earliest deadline first scheduling...
In this paper, we propose, a new scheduling algorithm for LTE-A uplink systems entitled Multi-user Resource Allocation Process (MURAP). The latter supports uplink multi-user transmissions. Indeed, the main contribution of this work is to allocate the Physical Resources Blocks (PRBs) of all Component Carriers (CCs) to Real Time (RT) and-non Real Time (NRT) users using various criteria. Our proposed...
Vehicular Delay Tolerant Network (VDTN) has emerged as a special type of network that is distinguished by the non-existence of end-to-end path between source nodes and destination nodes. Routing is one of the crucial issues in VDTN. To route a message, it must be scheduled from the outgoing buffer of a node. This is also an important issue considering the fact that the routing algorithm routes this...
Governing how network resources are shared among various traffic flows is not a completely solved problem. The ideal system can implement a wide variety of detailed and flexible policies; enforces those policies under all possible offered traffic combinations and scales well with the number of flows. In this paper we introduce a framework that approximates the ideal system well. It consists of flow-aware...
Several interconnected layers of network form the smart grid. The Home Area Network (HAN) is the lowest layer of this grid, where reports about the various parameters associated with electrical devices are generated. For example, parameters could include information about the operation, power consumption, energy losses, power factor, etc. associated with the electrical devices. The reports generated...
We propose a high network utilization CONGestion- Aware load balancing approach, Multi-hop CONGA. It aims at improving the performance of handling traffic asymmetry, which happens occasionally in data centers. It leverages regular Clos topology and overlays for virtualization. In this paper, we schedule at the unit of flowlet, which is the burst of packets belonging to a flow, and make routing decisions...
In big data clusters, task dispatchers assign arriving tasks to one of many workers (servers) for load balancing. Workers schedule task executions for rapidly completing queueing tasks. Both dispatchers and workers are important for optimizing task/job-completion-time (TCT/JCT). Current dispatchers probe loads on workers before assigning every task/job, which incurs expensive message overheads and...
In the Cloud Radio Access Network (C-RAN)architecture, a fronthaul network carries digitized radio signals from Remote Radio Head (RRH) to centralized Baseband Unit (BBU) using the Common Public Radio Interface (CPRI), which has a one-way jitter requirement of several nanoseconds. It is widely believed that Ethernet cannot meet this stringent jitter requirement, thus today's fronthaul networks are...
This work studies the problems of feedback allocation and scheduling for a multichannel downlink cellular network under limited and delayed feedback. We consider a realistic scenario where a fixed and small number of link states can be reported to the base- station (BS) per time-slot. We study the trade- off between knowing at the BS a small number of accurate link states (i.e. that can be...
Scheduling is one of the most important resource allocation for networked systems. Conventional scheduling policies are primarily developed under light-tailed (LT) traffic assumptions. However, recent empirical studies show that heavy-tailed (HT) traffic flows have emerged in a variety of networked systems, such as cellular networks, the Internet, and data centers. The highly bursty nature of HT traffic...
In this paper, we construct an analytical design framework for energy efficient scheduling for delay-constrained spectrum aggregation (ESSA), where the practical hardware limitations on SA capability bring various technical challenges. Specifically, the conventional water-filling power control cannot be adopted over all the channels, and the delay-aware scheduling solution should interact with the...
In recent times, there has been an increase in the number of mobile devices to access a variety of services on radio access network, and the trend is expected to continue. In addition, ultra-low latency services require much bandwidth and often characterized by having extremely short delay constraints. Hence, satisfying required strong QoS requirement becomes challenging task. Existing scheduling...
We study an uplink multi secondary user (SU) cognitive radio system suffering statistical heterogeneity among SUs' channels. This heterogeneity may result in differentiated delay performances to these SUs and result in harmful interference to the PU. We first derive an explicit closed-form expression for the average delay in terms of an arbitrary power-control policy. Then, we propose a delay-optimal...
The smart grid is a modern electricity grid that uses wireless technologies to control and supervise the substation and the electricity generation and consumption sides. Several wireless technologies can be used for smart grid communication such as Long-Term evolution (LTE) and Worldwide Interoperability for Microwave Access (WiMAX). However, LTE is the most compatible network for the smart grid because...
This paper studies a large-scale urban traffic signal control problem (LUTSCP). A centralized model is developed for describing the LUTSCP in a scheduling framework. The objective is to minimize the total network-wise delay in a fixed time window. We have implemented a recently developed algorithm, so called Jaya, to solve the LUTSCP. The population initialization is based on the four stages of traffic...
This paper describes a data-aware task dispatching strategy called Improved Data-Aware Task Dispatching (IDAD). This approach exploits the high-performance of local file access in non-uniform storage-access (NUSA) file systems and is based on our previous work, Data-Aware Dispatch (DAD). In IDAD, the method of calculating data placement is revised, and the CPU factor is removed, as it has no major...
Orthogonal Frequency Division Multiple Access (OFDMA) has been adopted in the newest fifth generation radio networks (5G) such as Cloud Radio Access Networks (C-RANs) and Heterogeneous Cloud Radio Access Networks (H-CRANs). Therefore, new scheduling strategies should be projected. In 5G radio networks, restricted requirements must be considered to implement an effective service to users such as throughput,...
In this paper, we present a delay-optimal packet scheduler for processing the M2M uplink traffic at the M2M application server (AS). Due to the delay-heterogeneity in uplink traffic, we classify it broadly into delay-tolerant and delay-sensitive traffic. We then map the diverse delay requirements of each class to sigmoidal functions of packet delay and formulate a utility-maximization problem that...
Inefficiency airport ground handing operations is one of the main reasons for flight delays, as it comprises a series of processes and collaborations between various airport's services. Using multi-agent planning (MAP) method, this paper proposes a framework as a management system to improve the airport ground handling management (GHM). With the identification of the services and resources related...
Live streaming of video contents over the Internet generally requires conversion (i.e.,transcoding) of the video contents based on the characteristics of viewers' devices (e.g.,spatial resolution, network bandwidth, and supported codec). Due to the complexity of video transcoding process, live streaming service providers are becoming reliant on cloud services (e.g.,Amazon AWS1). With the scalable...
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