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In the context of the Open Network Automation Platform (ONAP), we develop in this paper a resource allocation strategy for deploying Virtualized Network Functions (VNFs) on distributed data centers. For this purpose, we rely on a three-level data center hierarchy exploiting co-location facilities available within Main and Core Central Offices. We precisely propose an active VNFs' placement strategy,...
This paper addresses the challenging problem of guaranteeing quality-of-service (QoS) requirements associated with parallel running queries in distributed stream processing engines. In such platforms, the real-time processing of streaming data often requires executing a set of user-defined queries over continues data flows. However, previous studies showed that guaranteeing QoS enforcement (such as...
Toward 5G, LTE-Advanced specifies the key objective that the gigabit data rate for real-time video streaming can be transmitted under a high mobility scenario; thus, packet scheduling and radio resource management become the critical techniques that should be addressed effectively. Additionally, the mechanisms of relaying and the OFDMA coding have been certainly adopted in LTE-Advanced for the purposes...
Recent distributed key-value data stores, such as Aerospike are getting the momentum with ever-increasing need for large-scale real-time data processing. While these data stores can provide significantly improved performance, they still struggle to meet Quality of Service (QoS) during workload surges. In this paper, we address the problem of QoS-aware resource allocation for burst workloads in key-value...
Virtual Machine (VM) consolidation in the cloud has received significant research interest. A large body of approaches for VM consolidation in data centers resort to variants of the bin packing problem which tries to minimize the number of deployed physical machines while meeting the Service-Level-Agreement (SLA) constraints. In this paper we introduce the concept of workload delay as a Quality-of-Service...
As an emerging technology, software defined networking (SDN) allows flexible control of network devices and supports user applications with guaranteed quality of service (QoS). To achieve flow transmission between two non-adjacent switches in SDN, efficient routing algorithm should be designed. In this paper, we jointly consider route selection and flow allocation problem. To stress the service sensitivity...
The rapid growth of traffic demands has posed challenges and difficulties on both the radio access networks (RANs) and the backhaul links. To stress these problems, caching technology, more specifically, caching user contents at the infrastructures of different RANs is proposed as an effective approach. In this paper, we consider the joint user association and cache content placement problem in cache-enabled...
As an emerging technology, Mobile Edge Computing (MEC) is introduced to reduce network delay and provide context-aware services. MEC servers are located in close proximity to users, enabling users to seamlessly access services running on edge facilities. However, capacity and bandwidth constraints of MEC servers limit the number of services to be deployed. Therefore, an important problem is how to...
The future 5G networks need to support different kinds of business and applications, so the cloud radio access networks (C-RAN) which can provide a centralized collaborative resource management gain through small base stations, and seamless handoff also can be achieved through the overlapping deployment of macro base stations and micro base stations has become one of the important directions in 5G...
Long Term Evolution (LTE) and LTE-Advanced are traditionally defined for human to human (H2H) communication, they are excellent candidates as a communication technologies in the smart grid environment. The 3GPP standard recently adopted the use of LT E to support low powered sensor devices which they classify as machine type communication (MTC). In this work we evaluated the performance of widely...
The berth allocation problem (BAP) in marine container terminals is defined as the feasible berth allocation to the incoming vessels. In this work, we develop a model of fully fuzzy linear programming (FFLP) for the continuous and dynamic BAP. The vessel arrival times are assumed to be imprecise, meaning that the vessel can be late or early up to a threshold permitted. Triangular fuzzy numbers represent...
Proliferation of mobile terminals pushes the limits of scalability, capacity and coverage to unremittingly sustain V2X services. Massive machine type communication has the potential to ensure the autonomous sustainability of stream QoS. Catering for diversified packet-based traffic flows in a ubiquitous framework dictates the inline evaluation of the queue status, a complex and arduous task for scalable...
The high risk of random access collisions leads to huge challenge for the deployment massive Machine-Type Communications (mMTC), which cannot be sufficiently overcome by current solutions in LTE/LTE-A networks such as the extended access barring (EAB) scheme. The recently studied approaches of grouped random access have shown a great potential in simultaneously reducing the collision rate and the...
Cloud computing has received a significant amount of attentions from both engineering and academic fields. Designing optimal pricing schemes of cloud services plays an important role for the success of cloud computing. How to set optimal prices of cloud resources in order to maximize these CSPs' revenues in an Infrastructure as a Service (IaaS) cloud market while at the same time meeting the cloud...
In this paper we consider a spin-based multi-processor locking protocol, named the Multiprocessor resource sharing Protocol (MrsP). MrsP adopts a helping-mechanism where the preempted resource holder can migrate. The original schedulability analysis of MrsP carries considerable pessimism as it has been developed assuming limited knowledge of the resource usage for each remote task. In this paper new...
Support for exclusive access to shared (global) resources is instrumental in the context of embedded real-time multi-core systems, and mechanisms for achieving such access must be deterministic and efficient. There exist two traditional approaches for multiprocessors when a task requests a global resource that is locked by a task on a remote core: a spin-based approach, i.e. non-preemptive busy waiting...
LTE-M, which is an abbreviated version of LTE-MTC(Machine Type Communication) can be said to have a variety of applications, including a large number of heterogeneous interconnection of large-scale network equipment. One of the most prominent problems is that the machines may have a large amount of access requests in a short time, which can easily lead to network congestion. At present, the contention-based...
Cloud Radio Access Network (C-RAN) enhances the utilization of computing and radio resources by concentrating Baseband Unit (BBU) at a data center. It is essential to find a flexible way to manage the computing resource since processing power has become the majority of system power in C-RAN. The computing resource demand of users can be scaled according to the modulation bits and other parameters...
Effective Capacity (EC) indicates the maximum communication rate subject to a certain delay constraint while effective energy efficiency (EEE) denotes the ratio between EC and power consumption. In this paper, we analyze the EEE of ultra-reliable networks operating in the finite blocklength regime. We obtain a closed form approximation for the EEE in Rayleigh block fading channels as a function of...
To satisfy diverse use cases and business models in fifth generation (5G) wireless communication, network slicing in fog radio access networks (F-RANs) is proposed, which provides a cost efficient networking in a convenient way. However, the resource management for network slices is challenging, especially when the edge caching is utilized to alleviate the fronthaul burden and reduce the delay. In...
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