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Currently there are many tools available to generate HTTP loads to test and benchmark the performance of hosted web services such as Amazon Web Service. However, none of these tools currently supports SPDY protocol with a number of concurrent client requests. SPDY over HTTP is recently becoming more popular for web service providers, hence it is desirable to develop tools to benchmark the performance...
In many situations, the distributed constraint satisfaction problem provides a useful way to model real-world problems and apply agent-based solutions. However, more often than not, the problems that we wish to model change over time, and as such map better to dynamic DCSP's than to static instances. Until recently, algorithms to solve dynamic DCSP's (DynDCSP) have been developed and evaluated purely...
In last decade researchers have a growing attention in domain of Wireless Sensor Networks (WSNs) due to numerous increasing automated industry and battle field applications. WSNs comprises of hundreds or even thousands of unsystematically deployed energy lacking sensor units. These sensors are aimed to transfer data from the field to distant Base Station (BS). This operation necessitate excessive...
The underground communications system is the lifeline of a mine. During a mine emergency, it plays a crucial role in rescue and recovery operations. However, the biggest challenge faced by conventional communications system is its own survivability. Therefore a robust, resilient communications platform plays a crucial role when the safety of the miners is concerned. Hence the motivations for this...
Network emulation strikes the balance between using real machines on full-fledged networks and running software models of applications and networks in simulation environments. Advanced Linux features make it possible to emulate entire networks on a single machine, enabling experiments that are much easier to run and repeat. However, some of these features were not designed with the primary purpose...
This paper firstly presents the characteristics of the bus 1553B and its protocol implementation in the electronic equipment test system, and then introduces the implementation process for the bus controller and remote terminal in the system in detail. LabVIEW was adopted to realize the function in main controller and test terminal in the electronic equipment test system. The operation command, test...
We consider a distributed composite hypothesis testing problem in which sensor nodes share a collision channel to send their decisions and the fusion center (FC) has a limited time to collect these decisions. When the FC does not have enough time to collect all local decisions successfully, we propose a transmission protocol called sensor censoring random access as the multiple access scheme used...
This paper contains a concept for a testing device for charger. This mobile testing device affords an on-site inspection of charging stations, using the CHAdeMO protocol. Being a current sink, the dummy emulates the behaviour of an electric vehicle and communicates with the charging station. Current profiles can be requested, error scenarios can be created and the correct operation can be checked...
Recently, there has been an increasing need for secure, efficient and simple notification methods for mobile systems. Such systems are meant to provide users with precise tools best suited for work or leisure environments and a lot of effort has been put into creating a multitude of mobile applications. However, not much research has been put at the same time into determining which of the available...
The 2010 Joint Space Communication Layer (JSCL) Initial Capabilities Document (ICD) forecasts a large demand increase for US MILSATCOM in contested environments during the 2020–2025 timeframe. In response, the US Air Force in 2012 commenced the MILSATCOM Design for Affordability Risk Reduction (DFARR) effort to develop prototypes for a new protected tactical communications system. MIT Lincoln Laboratory...
This paper examines the results of Wideband High Frequency (WBHF) Near Vertical Incidence Skywave (NVIS) Over-The-Air (OTA) testing conducted in the upper Midwest region of the United States of America (USA). Two distances, 45 miles and 180 miles, were used for evaluating data throughput performance over very short and typical distance NVIS links. Two separate trials were conducted, one in early summer,...
Network services often depend on other services distributed throughout a network to function correctly. If a service fails, is disrupted, or is degraded, it is likely to impair other services. The web of dependencies can be surprisingly complex—especially within a large enterprise network—and evolve over time. Acquiring, maintaining, and understanding dependency knowledge is critical for many network...
LVDS (low-voltage differential signaling) technology provides an attractive solution for fast data transmission which has low power consumption. An enhanced LVDS transmission protocol is developed in this paper for reliable high-speed board-to-board LVDS data transmission in rail flaw ultrasonic testing system. The protocol, which is based on 8B/10B encoding and dynamic time-delay adjustment, avoids...
The results of design and preliminary open path testing mobile tropospheric communication system are discussed. Practical recommendations to improve the characteristics of quality in mobile tropospheric communications systems are made.
The past decade has seen a lot of research on statistics-based network protocol identification using machine learning techniques. Prior studies have shown promising results in terms of high accuracy and fast classification speed. However, most works have embodied an implicit assumption that all protocols are known in advance and presented in the training data, which is unrealistic since real-world...
Coordination is playing a key role in complex cyberphysicalsystems (CPSs). The complexity and importance of coordination models and languages for CPSs necessarily lead to a higher relevance of testing during development of CPSs. Model-based testing is a promising technology to test the conformance or non-conformance relation between the implementation-under-test (IUT) and its specification. In this...
Modbus/TCP is a network protocol for industrial communications encapsulated in TCP/IP network packets. There is an increasing need to test existing Modbus protocol implementations for security vulnerabilities, as devices become accessible even from the Internet. Fuzz testing can be used to discover implementation bugs in a fast and economical way. We present the design and implementation of MTF, a...
This paper presents a reference architecture for interoperability testing of electric vehicles as well as their support equipment with the smart grid and the e-Mobility environment. Pan-European Electric Vehicle (EV)-charging is currently problematic as there are compliance and interoperability issues on different communication levels and among the different domains comprising the eMobility system...
The use of a real-time simulator helps Enel Distribuzione to verify their protection schemes and protocols as well as to study the smart grid concepts required to run their grid effectively and reliably.
The paper deals with theoretical and experimental issues of an idea towards a cloud-based Wizard of Oz in the Microsoft Azure cloud environment. Wizard of Oz is a common tool in social robotics and especially in specific applications like mental illness treatment, ambient assisted living, and many others. The final goal is to create a system with the ability to learn and replace a human wizard by...
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