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Mobile edge cloud has been increasingly concerned by researchers due to its closer distance to mobile users than the traditional cloud on Internet. Offloading computations from mobile devices to the nearby edge cloud is an effective technique to accelerate the applications and/or save energy on the mobile devices. However, the mobile edge cloud usually has limited computation resources and constrained...
Resource competition, a serious problem in many actual networks, largely influence the network performance and may lead to network congestion. The allocation of link's bandwidth resource is a key process to relieve the situation. Researchers have put forward some strategies to improve the network capacity. They thought that the allocation strategies were determined by the importance of each link which...
When multiple virtual machines (VMs) are running on the same physical device, inner-VM switching and VM's bandwidth allocation are usually achieved by hypervisor, without any NIC support. Although there have been several optimization algorithms for hypervisor, these software-based methods still can't be optimal solutions because of extra CPU workloads. Motivated by the studies, we proposed a VM-friendly...
Based on the analysis of the data characteristics of typical business in distribution network, the data transmitted in the distribution communication network are classified. After studied the network scheduling algorithm based on the concept of "window", an improved dynamically time window sharing scheduling algorithm is proposed for distribution communication network. According to the differences...
Periodic broadcasting has achieved prominent performance in VoD (Video on Demand) service in wired network. However, the development of wireless VoD service still has gone on hard and slowly in comparison to the rapid growth of mobile video service. In this paper, we propose a scalable video streaming method HQOBA (Heterogeneous Quality-Oriented Bandwidth Allocation) to address the problems in wireless...
Regarding the bandwidth allocation of IEEE 802.16j two-hop relay networks, a Dynamic Bandwidth Allocation (DBA) algorithm based on the utility optimization is proposed. During the bandwidth allocation process of relay links, DBA algorithm takes the Quality-of-Service (QoS) requirements of different services into account by means of utility functions came from economic theories. Under the certain constraints,...
We study the prototype for fine-grained bandwidth allocating managers (FGBAM) which allot communication bandwidth inside heterogeneous software-defined networks (SDN) based on user-defined policies. FGBAM can be beneficial in enabling Quality-of-Service (QoS) during both normal periods and disaster recovery time. FGBAM consists of two parts: the web-based front end and the back end for enforcing bandwidth...
The shared nature of cloud network infrastructures causes unpredictable network performance, which may degrade the performance of these applications. Recently, several works propose to explicitly reserve the network bandwidth in the cloud with virtual network abstraction models, which pre-specify the network bandwidth between virtual machines (VMs) for a tenant job. However, the pre-specification...
In disaster affected regions, communication and coordination among different authorities like volunteers, army and government personals are extremely important for smooth rescue operations. A major problem faced by the rescue workers during post disaster scenario is the frequent communication disruption from the conventional networks (like cellular), and therefore information collection and coordination...
Network Virtualization is receiving more and more attention lately. It allows multiple parallel virtual networks to run on the shared physical infrastructure. In virtual network environment, a set of virtual networks share the resource of a common physical network although each virtual network is isolated from others. Therefore, bandwidth allocation mechanism is one of the important problems for network...
This paper presents a novel quality-of-service (QoS) management system for SDN networks with the feature of distributing bandwidth for applications in different slicing networks. Thus, the applications in different sliced networks (different divisions of an enterprise) can have different bandwidth management policies. The proposed system is also integrated into a vCPE framework to achieve network...
This paper proposes a dynamic allocation strategy for networked control system with two constraints. The first constraint confines the bandwidth of each control loop in a bounded interval, and the second one makes the overall bandwidth allocation not beyond the network capacity. The scheme contains four steps. In the first step, the error of each control loop is estimated using the mean absolute error...
In this paper, we propose an anti-interference cooperative spectrum sharing strategy based on fairness secondary users selection where the secondary system can gain spectrum access to the primary system. Specifically, secondary user STb and STq are selected to transmit the primary and secondary signal by using different bandwidth in the second transmission slot which occupies a part of the whole transmission...
Efficient and optimized data transfer in broadband is the anchor point of digital economy in modern era. One the most challenging issues for providing different services in broadband is the bandwidth allocation. That is a real-time multi dimensional problem solving requiring to satisfy QOS and SLA constraints at the same time. In this paper, we present a real-time adaptive framework for the problem...
Network is critical resource for applications, but current datacenter network is shared among untrusted tenants in a best-effort manner, which cannot guarantee fairness among tenants. Fair network sharing in datacenter is a challenging problem, because the network resource is multiplexed by many virtual machines (VMs), and every VM cannot know its explicit fair bandwidth with little knowledge of network's...
In a cognitive radio network (CRN), allocating spectrum resources to terminals is a fundamental problem due to dynamic characteristics of wireless spectrum. However, distributed spectrum allocation schemes are usually sub-optimal due to lack of global information, and existing centralized schemes merely assume the existence of global information collection method without implementing the protocol...
We propose a dynamic and cooperative approach to support the desired Quality of Experience (QoE) of the mobile users in a heterogeneous cellular network. Specifically, we focus on a scenario in which a mobile video streaming service is provided to users. We then develop a mobile streaming traffic micro-to-macro offloading scheme based on a cross layer approach, in which we exploit the knowledge of...
When a massive network disruption occurs, repair of the damaged network takes time, and the recovery process involves multiple stages. We previously proposed a multi-stage network recovery method for determining the pareto-optimal recovery order of failed physical components, reflecting the balance requirement between maximizing the total amount of traffic on all logical paths, called total network...
In this paper, we study the managerial insights of two bandwidth sharing schemes on communication networks with multi-class traffic under the budget constraint. Through an analysis of the trade-off between efficiency versus fairness, decision makers would make their own choices for sharing the limited bandwidth. Taking the blocking probability into account, two management schemes are introduced to...
In a virtual internet architecture, multiple routing architectures can run on a shared physical infrastructure, which is carried out with network virtualization. This paper presents the design and evaluation of a bandwidth allocation algorithm based on multi-commodity flow problem solver integrated with a traffic predictor: linear predictor with dynamic error compensation (L-PREDEC). The basic idea...
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