Distributed Event Notification for Mobile Ad Hoc Networks

Skjelsvik, Katrine Stemland; Goebel, Vera; Plagemann, Thomas

doi:10.1109/mdso.2004.18

Cited by 11 publications

(11 citation statements)

References 3 publications

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“…DENS [11] is a communication tool in our architecture, providing an asynchronous communication mechanism using the publish/subscribe model which is well suited for a highly dynamic environment such as our scenario. Some of the nodes in the network are chosen as so called DENS-nodes.…”

Section: B Distributed Event Notification Service (Dens)mentioning

confidence: 99%

NEMAN: a network emulator for mobile ad-hoc networks

Puzar

Plagemann

2005

Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005.

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Development of applications and protocols for mobile ad-hoc networks has always been a challenge. Specific characteristics such as frequent topology changes due to nodes moving around, popping up or being turned off, need to be considered from the earliest stages of development. Since testing and evaluation using genuine wireless devices is both expensive and highly impractical, other tools need to be used in the development phase. Simulators give a very detailed model of lower layers' behaviors, but code often needs to be completely rewritten in order to be used on actual physical devices. Emulators present a trade-off between real test beds and simulators, providing a virtual wireless network at the lowest layers, and yet allowing real code to be run on the higher layers. In this paper, we present such an emulation platform, called NEMAN, that allows us to run a virtual wireless network of hundreds of nodes on a single end-user machine. NEMAN has shown to be an important and very useful tool during development of different applications and protocols for our project, including a key management protocol and a distributed event notification service.

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Section: B Distributed Event Notification Service (Dens)mentioning

confidence: 99%

NEMAN: a network emulator for mobile ad-hoc networks

Puzar

Plagemann

2005

Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005.

Self Cite

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“…These networks have low node density and high node mobility, and the middleware services must therefore handle network partitions and provide a delay tolerant Distributed Event Notification Service (DENS) to the applications [6]. An event is a change in data of interest.…”

Section: Introductionmentioning

confidence: 99%

“…A notification message describes an event. In [6] a set of so-called DENS nodes forms an overlay responsible for delivering subscriptions and notifications to their destinations, to replicate them, and to perform store-carry-forward operations. In addition to the dissemination process, the other main design decision for the DENS is the subscription specification and event filtering, i.e., the subscription language, that determines the usefulness of the DENS for different applications.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy Logic-Based Event Notification in Sparse MANETs

Lekova¹,

Skjelsvik

Plagemann

et al. 2007

21st International Conference on Advanced Information Networking and Applications Workshops (AINAW'07)

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In the Ad-Hoc InfoWare project, we develop a delay tolerant event notification service for sparse Mobile Ad-Hoc Networks for emergency and rescue operations. In most event notification solutions, subscriptions are formed with crisp values or crisp value ranges. Filtering mechanisms do not take into account more expressive subscriptions in terms of approximate predicates and complex aggregating relations among them. However, in emergency scenarios subscribers' interests often have gradual nature and subjective measure. Therefore, we design an intelligent event notification system allowing uncertainties to be modeled and complex matching semantics to be processed by fuzzy reasoning. Requiring more computational efforts, fuzzy logic introduces performance penalties in the whole network. We have developed a new subscription data structure and filtering algorithms, and evaluated and optimized it for runtime and space efficiency.

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“…This is especially suitable in SMANETs where the density of nodes may be low, and where partitioning and merging occurs because of disruptions, disconnections, and movement. Our delay tolerant distributed event notification service (DENS) provides such a service [2]. The DENS runs on some of the nodes in the network.…”

Section: Introductionmentioning

confidence: 99%

Using Continuous Queries for Event Filtering and Routing in Sparse MANETs

Skjelsvik

Søberg

Goebel

et al. 2007

11th IEEE International Workshop on Future Trends of Distributed Computing Systems (FTDCS'07)

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In our project, we design middleware services for emergency and rescue scenarios in sparse Mobile AdHoc Networks (SMANETs). One of these services is a distributed event notification service (DENS) for asynchronous communication. The DENS architecture allows several subscription languages for different kinds of subscriptions. To support complex subscriptions, we use a Data Stream Management System (DSMS) for filtering of the data streams and matching of filtered events and subscriptions. We have designed a simple rescue scenario to investigate the possibilities of using a DSMS together with the DENS middleware layer. In this paper we discuss the design of our implementation and first experimental results of our ongoing work.

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Distributed Event Notification for Mobile Ad Hoc Networks

Cited by 11 publications

References 3 publications

NEMAN: a network emulator for mobile ad-hoc networks

NEMAN: a network emulator for mobile ad-hoc networks

Fuzzy Logic-Based Event Notification in Sparse MANETs

Using Continuous Queries for Event Filtering and Routing in Sparse MANETs

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