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Recently, two Modular Multilevel Converter (MMC) projects are under construction in China. Since these are the first two multi-terminal MMC projects in the world and the controllers are sophisticated, a real time simulation platform becomes critical to enable hardware-in-the-loop (HIL) test and validation of the MMC controllers in various scenarios, before applying them in the field. This paper presents...
Taking into account the fact that uneven video streams, instability of the network bandwidth , it's difficult to match the transmission bandwidth and video bit rate in video delivery procedure. Based on the SIP / SDP protocol, this paper presents an adaptive video streaming transmission control algorithm, customs a RTP / RTCP control strategy. Considering the current network status, receiver-side...
The Small Aircraft Transportation System (SATS) protocol, developed at NASA, aims to increase air transportation access for smaller communities and improve the transportation of people, services, and goods by a more effective use of over 5,000 small public airports in the United States. By using model checking and I/O automata, a number of different groups have verified many of the operational properties...
Real-time locking protocols employ progress mechanism(s) to ensure that resource-holding jobs are scheduled. These mechanisms are required to bound the duration of priority-inversion blocking (pi-blocking) for jobs sharing resources. Examples of such progress mechanisms include priority inheritance and priority donation. Unfortunately, some progress mechanisms can cause any job, including those that...
Semi-partitioned scheduling has become the subject of recent interest for multiprocessors due to better utilization results, compared to conventional global and partitioned scheduling algorithms. Under semi-partitioned scheduling, a major group of tasks are assigned to fixed processors while a low number of tasks are allocated to more than one processor. Various task assigning techniques have recently...
This paper presents the model splitting method for large-scale interactive network simulation, which addresses the separation of concerns between network researchers, who focus on developing complex network models and conducting large-scale network experiments, and simulator developers, who are concerned with developing efficient simulation engines to achieve the best performance on parallel platforms...
In this paper, we present the Open Network Emulator (ONE) a network simulator that combines the controllability and scalability of simulation with the direct code execution properties of emulation and experimental test beds. ONE has two novel features. First is a compiler framework that automatically transforms existing network application/protocols written in imperative languages such as C and C++...
Architectures in which multicore chips are augmented with graphics processing units (GPUs) have great potential in many domains in which computationally intensive real-time workloads must be supported. However, unlike standard CPUs, GPUs are treated as I/O devices and require the use of interrupts to facilitate communication with CPUs. Given their disruptive nature, interrupts must be dealt with carefully...
Component-Based Development (CBD) reduces development time and effort by allowing systems to be built from pre-developed reusable components. Partitioning the behavior into a set of major operational modes is a classical approach to reduce complexity of embedded systems design and execution. In supporting system modes in CBD, a key issue is seamless composition of pre-developed multi-mode components...
This paper presents the first real-time multiprocessor locking protocol that supports fine-grained nested resource requests. This locking protocol relies on a novel technique for ordering the satisfaction of resource requests to ensure a bounded duration of priority inversions for nested requests. This technique can be applied on partitioned, clustered, and globally scheduled systems in which waiting...
This paper addresses the problem of scheduling periodic parallel tasks on a multi-resource platform, where tasks have real-time constraints. The goal is to exploit the inherent parallelism of a platform comprised of multiple heterogeneous resources. A resource model is proposed, which abstracts the key properties of any heterogeneous resource from a scheduling perspective. A new scheduling algorithm...
The recent research and development in the domain of Wireless Sensor Networks (WSNs) have opened up tremendous opportunities and applications in many different scenarios. If we take into account the aftermaths of disaster, we certainly need to build up a mechanism to gather the data for the disaster hit area in which there is minimum delay and protocol we use should be energy efficient. This can be...
The electric power grid has been developed over last century and it is facing many problems. The electric grid lacks the ability to adapt and integrate intermittent energy sources and active customer participation. Numbers of architecture have been proposed by various agencies for smart grid. Micro-grid is the lowest node in the hierarchy of smart grid that has to be developed efficiently for optimal...
The synchrophasor technology has become focus of many theoretical, conceptual and practical studies lately due to an increased opportunity to improve power system reliability and security through enhanced monitoring, protection and control. The paper provides a survey of signal processing, communication and networking issues surrounding this topic so that professionals from related areas can benefit...
Renewable energy based micro grids have great importance to deal with energy-intensive. In this paper, we build a microgrid consist of AC line and DC line at first. A common microgrid has its own control strategy and energy management system. With a compatible energy management system, those distributed generations and energy storage units can mostly improve the micro grid's efficiency. During island...
In e-Science, many scientific workflow management systems have been developed to integrate distributed computation resources, data sets, and mining algorithms. Users usually modify and rerun a workflow while repeating procedures: preprocess of data, selection of features, modification of data, selection of mining algorithms, generation of models, and evaluation of the models. These procedures are...
Smart devices have deeply modified the user consumption expectations getting used to rich interactive experiences around new media services. In this emerging landscape, TV rises as the central media device integrating the home network ecosystem. In the race to create more dynamic and customizable content, computer generated 3D graphics get a prominent position combined with video and audio to provide...
Maximizing the identification speed of Radio Frequency Identification (RFID) tagged items is one of the main challenges in the area than can bring significant benefits to a vast array of applications. The dominating UHF EPC Gen2 protocol only specifies collision avoidance algorithms and, although collision recovery techniques have been investigated by researchers in the past, no attempt has been made...
Management of household appliances and the services have been complicated by increasing of network devices recently. Therefore, Home Gateway (HGW) which manages them intensively has been expected as new consumer electronics. However, HGW has not been popular in our life because the installation cost of HGW is expensive compared with the benefits of services. In this study, we propose new home network...
Ethernet switches are increasingly used in real-time distributed systems as a technical solution to guarantee the timeliness in communications. However, there are still limitations related to real-time behavior caused by the limited number of priority levels and the possibility of memory overruns with consequent message losses. These limitations can be eliminated using a master/slave technique such...
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