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In multihop NGEO satellite network (MSN), given the un-uniform user distribution in satellite footprints, and further affected by topology variations and link capacity jitters, the inter-satellite links (ISLs) are expected to endure wildly volatile traffic load and even suffer from severe congestion. This leads to the poor quality of service (QoS) for the delay-sensitive flows. To alleviate this problem,...
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...
It is of great importance in a WiFi network to achieve a good user experience and fair allocation of the limited bandwidth resource. In this paper we propose the design of a cross-layer AP (Access Point) centric streaming scheduler for DASH (Dynamic Adaptive Streaming over HTTP) in multirate 802.11 wireless networks. Residing at the AP, the scheduler achieves proportional fairness at the packet level...
We investigate bandwidth allocation and scheduling in non-cooperative wireless networks as a mixed integer programming problem. Fast Vickrey-Clarke-Groves (VCG) auction-based bandwidth allocation (FABA), incorporating relaxation-based greedy algorithm (RGA) and split-flow-based algorithm (SFA), is proposed by modifying the traditional VCG auction to make it computationally feasible. With incentives...
We consider scheduling strategies for point-to-multipoint (PMP) storage area networks (SANs) that use network coded storage (NCS).We present a simple SAN system model, two server scheduling algorithms for PMP networks, and analytical expressions for internal and external blocking probability. We point to select scheduling advantages in NCS systems under normal operating conditions, where content requests...
Fairness assurance in modern access networks constitutes a focal point of interest since it dramatically affects the quality of the provided services to the final users. Traffic balancing entails fair bandwidth distribution along with efficient service provisioning, inaugurating a challenging tradeoff between the system throughput and fairness. In this paper, the downlink scheduling effectiveness...
LTE-advanced and other 4G cellular standards allow relay nodes (RNs) to be deployed as a substitute for base stations (BSs). Unlike a BS, an RN is not directly connected to the backbone. Rather, each RN is associated with a donor BS, to which it is connected through the OFDMA wireless link. A very important task in the operation of a wireless network is packet scheduling. In a network with RNs, such...
To achieve high performance, thousands of servers in cloud datacenters coordinate tasks to provide reliable and highly available cloud computing services, especially, in terms of multitasking. Effective mechanisms are now required to prepare for a failure of such computing nodes. A number of studies have been done to address this problem, but it cannot always guarantee an acceptable performance. In...
Middleboxes are ubiquitous in today's networks. They perform deep packet processing such as content-based filtering and transformation, which requires multiple categories of resources (e.g., CPU, memory bandwidth, and link bandwidth). Depending on the processing requirement of traffic, packet processing for different flows may consume vastly different amounts of resources. Multi-resource fair queueing...
Grid computing involves sharing data storage and coordinating network resources. The complexity of scheduling increases with heterogeneous nature of grid and is highly difficult to schedule effectively. The goal of grid job scheduling is to achieve high system performance and match the job to the appropriate available resource. Due to dynamic nature of grid, the traditional job scheduling algorithms...
Quality of user Experience (QoE) is one of the most important issues for scalable video over OFDMA networks. Given the OFDMA frame structure, scheduling tasks can be classified into 1) intraframe scheduling and 2) interframe scheduling. While many studies have focused on how to enhance the QoE through intraframe scheduling, few studies have examined the potential of interframe scheduling. The only...
Wireless sensor networks (WSN) consist of a huge number of low-power, short-lived and unreliable sensors. Sensor nodes are battery - powered devices, and have higher energy consumption and network life time for transmitting of data frequently. The aim of the paper is to increase the life time, reduce end to end delay and high reliability with maximum performance of WSN. Most of the existing scheduling...
LTE, The Long Term Evolution systems is the major milestone in stepping towards 4G evolution. An important feature in LTE is its adoption of Radio Resource Management (RRM) procedures which interact among them to improve the usage of available radio resources. A quantitative performance assessment has been carried out in order to enrich the analysis of different Scheduling schemes for the downlink...
Scheduling allots the frequency and time resources of the LTE network to the users based on certain algorithms. The aim of an efficient fair scheduling is to provide the radio resources such that all the users are serviced almost equally over time without reducing the average user throughput. In this paper a fair scheduling algorithm named Blind Equal Throughput is modified and tested in different...
Grid computing is a service for sharing computer power and data storage capacity over the Internet. In this paper, we propose a load balancing scheme (LBFBS) which presents a new selection method (FNCS) for the scheduling among heterogeneous resources by considering the network communication speed or bandwidth speed and capacity of various resources. So we implement the proposed load balancing strategy...
This paper presents LCA, a memory Link and Cache-Aware co-scheduling approach for CMPs. It is based on a novel application classification scheme that monitors resource utilization across the entire memory hierarchy from main memory down to CPU cores. This enables us to predict application interference accurately and support a co-scheduling algorithm that outperforms state-of-the-art scheduling policies...
Remote offloading techniques have been proposed to overcome the limited resources of mobile platforms by leveraging external powerful resources such as personal work-stations or cloud servers. Prior studies have primarily focused on core mechanisms for offloading. Yet, adaptive scheduling in such systems is important because offloading effectiveness can be influenced by varying network conditions,...
The use of public clouds to extend the capacity of private resources has become a popular manner to achieve elasticity in the available in-house computational power to meet deadlines. Schedulers for such hybrid clouds have the role of deciding which types of instances should be leased in a pay-per-use basis to fulfill application demands. Often these schedulers assume a costless private cloud, which...
Cognitive radio (CR) promotes the utilization of the wireless spectrum through admitting the secondary users to access the primary channels in an opportunistic manner. Therefore, the real-time video streaming over the CR network is challenging due to the time-varying channels. In this paper, we propose an adaptive scalable video transmission scheduling method for video streaming over time-varying...
The Transmission of multimedia content typically has bandwidth, delay and loss issues. Video compression, layer, media distribution services, streams servers, synchronization technique and synchronization protocols for streaming are major areas of research. It require scheduling protocol to sequence the events. Various useful applications for streaming in internet world are available and their implementation...
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