Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Testing protocols in Internet of Things by a formal passive technique

17.04.2014

Protocol conformance and performance testing are two branches of testing designed to determine compliance and performance of protocol implementations to their standard.

Dr. CHE Xiaoping and Dr. MAAG Stephane from Laboratory UMR 5157 of French Centre national de la recherché scientifique (CNRS) focus on converging these two kinds of testing in a same formal approach. After several years of innovative research, they eventually created a formal approach to formally specify conformance and performance requirements.


This is distributed testing architecture.

Credit: ©Science China Press

They successfully applied their approach on Extensible Messaging and Presence Protocol (XMPP) and designed a distributed testing framework for XMPP services. Their work, entitled "Testing protocols in Internet of Things by a formal passive technique", is published in SCIENCE CHINA Information Sciences.2014, Vol 57(3).

Extensible Messaging and Presence Protocol (XMPP) has gained more attention as a communication protocol in Internet of Things (IoT), which is a standardized protocol by Internet Engineering Task Force (IETF) and well established in the Internet.

XMPP is available for commonly used programming languages and device platforms. Several studies have investigated the potentialities of applying XMPP in IoT. With the tendency that XMPP is more and more widely used in many aspects of IoT, the problem of formally testing this protocol in a wireless environment is coming out in the wash.

Some works have tried to test the XMPP protocol under different conditions. However, they either simply evaluate the protocol performance or only test several conformance issues. It is worthwhile to note that conformance and performance testing are often associated within the protocol testing process. They are mainly applied to validate or verify the scalability and reliability of the system.

Many benefits can be brought to the testing process if both inherit from the same approach. Besides, very few works have tried to formalize the performance requirements which are mandatory for accurately testing the performance of protocols.

The main objective of this work is then to propose a passive distributed testing approach, for testing both the conformance and the performance of XMPP under IoT environment, based on the formal testing technique. Although some crucial works have been done in similar testing area, they studied runtime verification of properties expressed either in linear-time temporal logic or in timed linear-time temporal logic.

Different from their works focusing on testing functional properties based on formal models, this work concentrates on formally testing functional and nonfunctional properties without formal models. Also note that, this work is absorbed in the performance testing, not in performance evaluation. While performance evaluation of network protocols focuses on the evaluation of its performance, performance testing approaches aim at testing performance requirements that are expected in the protocol standard.

In this work, formalism is defined to specify conformance and performance requirements of XMPP represented as formulas tested on real protocol traces. Horn clauses based syntax is used in the approach to express properties that are checked on extracted traces. And then, since several protocol requirements need to be tested on different wireless entities, a distributed framework is designed for testing the approach on runtime wireless network execution traces.

The approach has been implemented into a distributed framework which provides the possibility to test individual nodes of a complex network environment. The results from testing several properties on large traces have been obtained with success. The subtesters and global monitor in the approach can intuitively reflect the current conformance and performance requirements conditions.

Some researchers suggested that the authors can work on building a standardized performance testing benchmark system for XMPP protocol in future. In that case, the efficiency and processing capacity of the system when massive subtesters are performed through complex network situations would be the crucial point they need to handle.

###

See the article:

Xiaoping CHE, Stephane MAAG. Testing protocols in Internet of Things by a formal passive technique. SCIENCE CHINA Information Sciences, 2014, 57(3): 032101(13)

http://info.scichina.com:8084/sciFe/EN/10.1007/s11432-014-5068-x

Science China Press Co., Ltd. (SCP) is a scientific journal publishing company of the Chinese Academy of Sciences (CAS). For 60 years, SCP takes its mission to present to the world the best achievements by Chinese scientists on various fields of natural sciences researches.

http://www.scichina.com/

CHE Xiaoping | Eurek Alert!

More articles from Information Technology:

nachricht Magnetic fields provide a new way to communicate wirelessly
01.09.2015 | University of California - San Diego

nachricht 'Magic' sphere for information transfer
24.08.2015 | Lomonosov Moscow State University

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Hubble survey unlocks clues to star birth in neighboring galaxy

In a survey of NASA's Hubble Space Telescope images of 2,753 young, blue star clusters in the neighboring Andromeda galaxy (M31), astronomers have found that M31 and our own galaxy have a similar percentage of newborn stars based on mass.

By nailing down what percentage of stars have a particular mass within a cluster, or the Initial Mass Function (IMF), scientists can better interpret the light...

Im Focus: Fraunhofer ISE Develops Highly Compact Inverter for Uninterruptible Power Supplies

Silicon Carbide Components Enable Efficiency of 98.7 percent

Researchers at the Fraunhofer Institute for Solar Energy Systems ISE have developed a highly compact and efficient inverter for use in uninterruptible power...

Im Focus: How wind sculpted Earth's largest dust deposit

China's Loess Plateau was formed by wind alternately depositing dust or removing dust over the last 2.6 million years, according to a new report from University of Arizona geoscientists. The study is the first to explain how the steep-fronted plateau formed.

China's Loess Plateau was formed by wind alternately depositing dust or removing dust over the last 2.6 million years, according to a new report from...

Im Focus: An engineered surface unsticks sticky water droplets

The leaves of the lotus flower, and other natural surfaces that repel water and dirt, have been the model for many types of engineered liquid-repelling surfaces. As slippery as these surfaces are, however, tiny water droplets still stick to them. Now, Penn State researchers have developed nano/micro-textured, highly slippery surfaces able to outperform these naturally inspired coatings, particularly when the water is a vapor or tiny droplets.

Enhancing the mobility of liquid droplets on rough surfaces could improve condensation heat transfer for power-plant heat exchangers, create more efficient...

Im Focus: Increasingly severe disturbances weaken world's temperate forests

Longer, more severe, and hotter droughts and a myriad of other threats, including diseases and more extensive and severe wildfires, are threatening to transform some of the world's temperate forests, a new study published in Science has found. Without informed management, some forests could convert to shrublands or grasslands within the coming decades.

"While we have been trying to manage for resilience of 20th century conditions, we realize now that we must prepare for transformations and attempt to ease...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Together - Work - Experience

03.09.2015 | Event News

Networking conference in Heidelberg for outstanding mathematicians and computer scientists

20.08.2015 | Event News

Scientists meet in Münster for the world’s largest Chitin und Chitosan Conference

20.08.2015 | Event News

 
Latest News

Ion implanted, co-annealed, screen-printed 21% efficient n-PERT solar cells with a bifaciality >97%

04.09.2015 | Power and Electrical Engineering

Casting of SiSiC: new perspectives for chemical and plant engineering

04.09.2015 | Machine Engineering

Extremely thin ceramic components made possible by extrusion

04.09.2015 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>