Event-Based Interaction for Rescue and Emergency Applications in Mobile and Disruptive Environments

2010 ◽  
pp. 411-431
Author(s):  
Katrine Stemland Skjelsvik ◽  
Vera Goebel ◽  
Thomas Plagemann
Keyword(s):  
Mobile Ad Hoc Networks ◽  
Ad Hoc ◽  
Information Overload ◽  
Asynchronous Communication ◽  
Transmission Range ◽  
Application Domain ◽  
Event Notification ◽  
Network Partitions ◽  
Hoc Networks ◽  
Event Based

Event-based interaction is suitable for rescue and emergency applications because the filtering capabilities can help to prevent information overload, and such interaction may be offered by an Event Notification Service (ENS). We focus on ENS in sparse Mobile Ad-hoc Networks (MANETs), since an incident may occur e.g., in a deserted place lacking infrastructure, the density of nodes may be low, and there may be physical obstacles limiting the transmission range. The asynchronous communication provided by the ENS is suited for an environment where there may be long-lasting network partitions. In this chapter, we describe characteristics of rescue operations and use this as a basis for discussing ENS design choices such as subscription language, architecture and routing. Afterwards, we present our own ENS solution, the Distributed Event Notification Service (DENS), which is tailored for such an application domain.

Distributed Event Notification for Mobile Ad Hoc Networks

2004 ◽  
Vol 5 (8) ◽  
pp. 2-2 ◽  
Author(s):  
K.S. Skjelsvik ◽  
V. Goebel ◽  
T. Plagemann
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Ad Hoc ◽  
Event Notification ◽  
Mobile Ad Hoc ◽  
Hoc Networks

scholarly journals Minimum Number of Neighbour Nodes and Transmission Range Based Overhearing Controlled Protocol for Mobile Ad-Hoc Networks

2019 ◽  
Vol 8 (4) ◽  
pp. 8689-8694
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Ad Hoc ◽  
High Energy ◽  
Energy Utilization ◽  
Transmission Range ◽  
Minimum Number ◽  
Route Information ◽  
Mobile Ad Hoc ◽  
Hoc Networks

Ad-hoc networks are communications less wireless networks; the most critical problem in mobile ad-hoc networks is energy utilization. Energy could be a restricted resource. All nodes eavesdrops the data transference in its locality and uses energy without need. Nevertheless various existing routing procedures collect route information via eavesdropping. The important reason for more energy utilization is unnecessary eavesdropping and rebroadcasting of RREQ to nodes. We propose a new mechanism to decrease energy consumption called Minimum Number of Neighbor Nodes and Transmission Range Based Overhearing Controlled Protocol. In which node has a choice of whether to send a packet or not by transmit effective info in Announcement Traffic Indication Message (ATIM) window and node selection on the basis of Transmission range and RES. The Proposed protocol is high energy-efficient compared to Conventional 802.11 PSM-established projects.

scholarly journals A Routing Protocol Based on Mobility Prediction for Mobile Ad Hoc Networks

2014 ◽  
Vol 10 (1) ◽  
pp. 24 ◽  
Author(s):  
Ahmed Bisengar
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Ad Hoc ◽  
Transmission Range ◽  
Time Interval ◽  
Mobile Nodes ◽  
Mobile Ad Hoc ◽  
Hoc Networks ◽  
The Stability ◽  
Link Duration

In Mobile Ad hoc Networks (MANETs), where nodes have limited transmitting power, the transmission is typically multi-hop. The network topology changes frequently due to the unpredictable movement of mobile nodes because each node is free to move arbitrarily with different speeds. Thus, when one node enters in the transmission range of another node a link between those two nodes is established, and an existent link is broken when either node is out of the transmission range of the other. We refer as link duration, the time interval during in which the link still established.This paper presents a novel mobility metric for mobile ad hoc networks, called link duration (LD) that measures the stability of an active link. This mobility metric is introduced to represent relative mobility between nodes in multi-hop distance.

A PERCOLATION MODEL OF MOBILE AD-HOC NETWORKS

2009 ◽  
Vol 20 (12) ◽  
pp. 1871-1902 ◽  
Author(s):  
HOSSEIN MOHAMMADI ◽  
EHSAN NEDAAEE OSKOEE ◽  
MOHSEN AFSHARCHI ◽  
NASSER YAZDANI ◽  
MUHAMMAD SAHIMI
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Ad Hoc ◽  
Random Network ◽  
Percolation Model ◽  
Transmission Range ◽  
Mobile Nodes ◽  
Practical Applications ◽  
Mobile Ad Hoc ◽  
Hoc Networks

Mobile ad-hoc networks (MANETs) are random, self-configurable and rapidly-deployable networks. The main goal of developing the MANETs is not only obtaining better service, but also having networks that can serve in situations in which no other means of communications can operate. Examples include networks that are used in battlefields, in search-and-rescue operations, and networks of sensors. We propose a percolation model for studying the properties of the MANETs. The model is based on a random network of sites, distributed in space, which represent the mobile nodes. Two nodes are linked if they are within each other's transmission ranges. A node may be lost or become inactive if, for example, it runs out of energy (provided by its batteries). A link can be lost if, for example, one of its two end nodes moves outside of the other's transmission range. Extensive Monte Carlo simulations are carried out to study the properties of the model. The network's topology is characterized by a critical transmission range, which is the analogue of the percolation threshold. It is shown that not only can the model take into account several important features of the real MANETs and explain them in physical terms, but also leads to the development of efficient protocols for self-configuration, adaptability, and disaster survival, which are of utmost importance to the practical applications.

Event-Based System Architecture in Mobile Ad Hoc Networks (MANETs)

2010 ◽  
pp. 346-368 ◽  
Author(s):  
Guanhong Pei ◽  
Binoy Ravindran
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Ad Hoc ◽  
Architectural Support ◽  
Loosely Coupled ◽  
Mobile Ad Hoc ◽  
And Performance ◽  
Hoc Networks ◽  
Event Based ◽  
Message Overhead

The strong decoupling between information producers and consumers in event-based (usually publish/subscribe) systems is attractive in the loosely coupled and dynamic network scenarios such as mobile ad hoc networks (MANETs). However, achieving end-to-end timeliness, reliability properties, with limited message overhead, is still an open problem in publish/subscribe (P/S) systems in MANETs. In this chapter, we cover the current state of the knowledge of interconnection topology, event routing schemes and innovative architectural support of P/S systems in MANETs with latest academic and industrial research practices and outcomes. We consider challenging issues from timeliness, reliability, message overhead, etc. with multi-publish-hop event delivery in typical use notional scenarios. Both theoretical analysis and performance evaluation of different solutions are afforded. We also examine and discuss a special issue on system re-configurability and “event causal dependencies.”

scholarly journals Event-Driven Mobile Computing with Objects

2010 ◽  
pp. 324-345
Author(s):  
Tom Van Cutsem ◽  
Wolfgang De Meuter
Keyword(s):  
Mobile Ad Hoc Networks ◽  
Programming Languages ◽  
Ad Hoc ◽  
Object Oriented ◽  
Object Oriented Programming ◽  
Novel Object ◽  
Engineering Level ◽  
Event Driven ◽  
Hoc Networks ◽  
Event Based

We motivate why event-driven approaches are suitable to address the challenges of mobile and ubiquitous computing. In particular, we describe the beneficial properties of event-based communication in so-called mobile ad hoc networks. However, because contemporary programming languages feature no built-in support for event-driven programming, programmers are often forced to integrate event-driven concepts with a different programming paradigm. In particular, we study the difficulties in combining events with the object-oriented paradigm. We argue that these difficulties form the basis of what we call the object-event impedance mismatch. We highlight the various issues at the software engineering level and propose to resolve this mismatch by introducing a novel object-oriented programming language that supports event-driven abstractions from the ground up.

Sign in / Sign up

Export Citation Format

Share Document