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Context awareness

About: Context awareness is a research topic. Over the lifetime, 5790 publications have been published within this topic receiving 119944 citations.


Papers
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Journal ArticleDOI
TL;DR: This paper proposes a new context-aware trust-based solution to distinguish between intentional and unintentional UAV misbehavior, and establishes the inter-UAV trust and estimates the current context in terms of UAV energy, mobility pattern, and enqueued packets.
Abstract: Ensuring the desired level of security is an important issue in all communicating systems, and it becomes more challenging in wireless environments. Flying Ad Hoc Networks (FANETs) are an emerging type of mobile network that is built using energy-restricted devices. Hence, the communications interface used and that computation complexity are additional factors to consider when designing secure protocols for these networks. In the literature, various solutions have been proposed to ensure secure and reliable internode communications, and these FANET nodes are known as Unmanned Aerial Vehicles (UAVs). In general, these UAVs are often detected as malicious due to an unintentional misbehavior related to the physical features of the UAVs, the communication mediums, or the network interface. In this paper, we propose a new context-aware trust-based solution to distinguish between intentional and unintentional UAV misbehavior. The main goal is to minimize the generated error ratio while meeting the desired security levels. Our proposal simultaneously establishes the inter-UAV trust and estimates the current context in terms of UAV energy, mobility pattern, and enqueued packets, in order to ensure full context awareness in the overall honesty evaluation. In addition, based on computed trust and context metrics, we also propose a new inter-UAV packet delivery strategy. Simulations conducted using NS2.35 evidence the efficiency of our proposal, called , at ensuring high detection ratios > 87% and high accuracy with reduced end-to-end delay, clearly outperforming previous proposals known as , - , and .

25 citations

Journal ArticleDOI
18 Jul 2009
TL;DR: In this article, the concept of context-based cooperation is introduced to enable applications to cross boundaries of individual systems and thereby allow combining both mobile and stationary resources in order to realize highly dynamic individual applications.
Abstract: Realistic requirements of mobile business applications often exceed the capabilities of their respective local environments. In order to overcome such restrictions of specific mobile devices, services, and resources, this contribution introduces the concept of context-based cooperation. It is based on mobile processes which enable applications to cross boundaries of individual systems and thereby allow combining both mobile and stationary resources in order to realize highly dynamic individual applications. This contribution presents an approach for realizing context-based cooperation built upon on a respective context management infrastructure and execution environment. It also identifies specific requirements and proposes related enhancements for mobile business applications.

25 citations

Proceedings ArticleDOI
27 Sep 1999
TL;DR: This work believes that context aware management of resources provides the most reliable basis for managing the non-deterministic behaviour of mobile systems.
Abstract: Systems must support context awareness for mobile applications to permit adaptation to heterogeneity of hosts and networks, and variations in the user's environment. We believe that context aware management of resources provides the most reliable basis for managing the non-deterministic behaviour of mobile systems.

25 citations

Journal Article
TL;DR: The goal of this report is to give an overview of the many aspects of context and provide pointers where data management solutions can address the challenges of context awareness.
Abstract: The goal of this report is to give an overview of the many aspects of context and, by taking into account these aspects, provide pointers where data management solutions can address the challenges of context awareness.

25 citations

Proceedings ArticleDOI
20 Apr 2010
TL;DR: A model for the development of context-awareness applications using Near Field Communication is presented based in the association of services and resources to augmented objects through Tags, defining the execution order and personalizing the user interaction through the use of resources and rules.
Abstract: In this paper a model for the development of context-awareness applications using Near Field Communication is presented. The model is based in the association of services and resources to augmented objects through Tags. The different types of services assigned to the objects are modeled in a hierarchy defining the execution order and personalizing the user interaction through the use of resources and rules. A tool for the testing and validation of the model has been developed and is described in the paper together with an application example.

25 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20236
202227
2021105
2020184
2019224
2018258