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This paper investigates the problem of maximizing uniform multicast throughput (MUMT) for multi-channel dense wireless sensor networks, where all nodes locate within one-hop transmission range and can communicate with each other on multiple orthogonal channels. This kind of networks show wide application in the real world, and maximizing uniform multicast throughput for these networks is worth deep...
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...
Simultaneous bidirectional transmission and recep- tion of signals on a single channel in a full duplex (FD) system is gaining increased attention from both academia and industry. Recent advances in radio transceiver design have been able to minimize the self interference (SI) to a great extent making realization of a FD transceiver possible. For FD deployment in a multi-cell environment, minimizing...
A distributed scheduling algorithm for millimeter wave (mmW) mesh networks is studied in this paper. The suggested algorithm starts initially with a random feasible schedule determined in a cooperative way between the nodes then tries to reach better feasible schedules via parallel and successive local search for better schedules in a defined range for each node without violating the feasibility constraints...
As the tempo of military operations slows, Army Medical Facilities are faced with a need to improve the efficiency of their clinics to provide timely service to the growing population of Soldiers who are spending more time at home station. Discrete event simulation was used to examine six scheduling and staffing policies for the Womack Army Medical Center's Optometry Clinic with a goal of increasing...
Streaming applications usually run on heterogeneous multiprocessor platforms and are required to have a high throughput, which in turn may increase the energy consumption. A trade-off between these two criteria is important for a system. Synchronous data flow graphs (SDFGs) are widely used to model streaming applications. In this paper, we propose a paralleled Pareto optimal scheduling method (PPOS)...
IEEE 802.15.4e Time Slotted Channel Hopping (TSCH) standard has gained a lot of attention within the Industrial Internet of Things research community due to its effectiveness in improving reliability and providing ultra-low power consumption for industrial applications, and in which its communication is orchestrated by a schedule. Despite its relevance, the standard leaves out of its scope in defining...
Polar codes have recently become increasingly popular due to their simple structure and low decoding complexity. However, polar codes are still not suitable for real-time applications because of the long decoding latency. In this paper, by analysis of the conventional architecture of SC decoder, a low latency SC decoder architecture is proposed. Using the proposed architecture, the decoding latency...
Airports and their terminal airspaces are key choke points in the air transportation system causing major delays and adding to pollution. A solution aimed at mitigating these chokepoints integrates the scheduling of runway operations, flight release from the gates and ramp into the airport movement area, and merging with other traffic competing for downstream airspace points. Within this integrated...
Quality of service (QoS) requirements have paved the way to a great deal of research about scheduling and resource allocation mechanisms. The fairness and throughput maximization have been considered as classical techniques. These techniques fail to fit with different QoS requirements over the Long Term Evolution (LTE) systems. These QoS requirements are presented in the form of scheduling priorities,...
The Generalized Nets apparatus is applied here to describe the MiMa-algorithm for computing a conflict-free schedule for packet switch. In the paper we propose a family of patterns for nonuniform traffic simulation. The results for throughput on a switch node with MiMa-algorithm by computer simulations with these patterns are presented. The necessary computations have been executed on BG01-IPP grid-cluster...
Wireless multimedia traffic has increased considerably in recent years, which puts forward higher demand on the capacity of existing network. Multicast, as a transmission strategy with high spectral efficiency, has not been widely studied in heterogeneous cellular network (HetNet). Meanwhile, in order to overcome the shortcoming of conventional multicast scheme (CMS) that the throughput of multicast...
Embedded system designers often face a large number of design alternatives when designing complex systems. A designer must select an alternative which satisfies application constraints (e.g. timing requirements) while optimizing system level objectives such as overall energy consumption. The size of design space is often very large giving rise to the need for systematic Design Space Exploration (DSE)...
Sharing multi-cycle hardware blocks like the DSP48E1 primitive in Xilinx FPGAs can result in significant resource savings, but complicates scheduling. For high-throughput, DSP blocks must be pipelined, which results in a high initiation interval (II) for resource shared implementations. In this paper, we propose a resource reduction technique that minimises DSP block usage while also offering improved...
The potential of exploiting large propagation delays in underwater acoustic (UWA) networks to maximize the network throughput is established in the recent past. Transmission scheduling strategies have been proposed to take advantage of large propagation delay. Super-TDMA is one among such Medium Access Control (MAC) strategies proposed. It is a form of Time Division Multiple Access (TDMA) protocol...
In a recent work, a regular grid-based network topology with multihop relaying was investigated. A transmission strategy which maximizes the throughput while exploiting the large propagation delay was presented, and the upper bound on throughput established. However, deployments of communication nodes in the ocean inevitably result in slight positional deviations from the expected locations of the...
Long propagation delay, limited bandwidth and high bit error rate pose great challenges in Media Access Control (MAC) protocol design for underwater acoustic networks. A reservation based MAC protocol called R-MAC designed for underwater acoustic networks was proposed and analyzed. However, there exists channel resources waste problem in R-MAC. In order to overcome this drawback, this paper proposes...
Colossal amounts of data are being generated in extreme-scale e-Sciences with the advent of new computation tools and experimental infrastructures. Such extremely large and complex data sets normally need to be transferred remotely for data storage and analysis. Reserving bandwidth as needed along selected paths in high-performance networks (HPNs) has proved to be an effective way to satisfy the high-demanding...
Due to the directionality of transmissions in millimeter wave (mm-wave) networks, wireless stations are usually unable to overhear when other stations access the channel. This makes it hard to design efficient distributed beam coordination and scheduling mechanisms. At the same time, centralized schemes only perform well in relatively simple, static scenarios. In practical settings where links have...
Resource sharing attempts to minimise usage of hardware blocks by mapping multiple operations onto same block at the cost of an increase in schedule length and initiation interval (II). Sharing multi-cycle high-throughput DSP blocks using traditional approaches results in significantly high II, determined by structure of dataflow graph of the design, thus limiting achievable throughput. We have developed...
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