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The current growth of mobile devices enabled with GPS receptors, cameras, accelerometers, and Internet access offers new opportunities for new mobile ubiquitous multimedia applications. Such applications help local communities to share resources using geo-location, interactive mapping, augmented reality, and several data representations. This paper presents CityEvents, a mobile solution that provides...
We consider a novel application in wireless sensor networks where mobile phones and wireless sensors can collaborate to collect sensing data. Although mobile phones can perform sensing at different locations, it is a challenge to provide stable sensing quality and availability over the entire area. One approach is to deploy stationary sensors at specific locations to maintain the sensing quality and...
Wireless sensor networks (WSNs) have been widely deployed for environmental monitoring and urban sensing applications. With the advancement of mobile phones, mobile users have increasing demands for sensing data relevant to their locations and activities. It is crucial to support reliable ubiquitous sensing for mobile users to retrieve sensing data of their interests anytime and anywhere. In this...
This paper address the challenge of design a feasible social-based mechanism to manage wireless mobile connectivity. In a previous work, we proposed a methodology to share connectivity experiences among mobile users inside on-line social networks [11]. The aim was explore peoples social circles to enhance their wireless connectivity experiences e.g., QoS metrics such as: throughput, latency and signal...
The service continuity mechanism is to provide multimedia application with seamless multimedia experience over multiple networks (Wifi, 3G, Wimax, LTE) as well as multiple devices (mobile, PCs, PDA, Settop box) in ubiquitous network. However, most of the proposed approaches of service continuity are either not adaptive resources provisioning or based on a specific definition of context in ubiquitous...
This paper studies the electricity consumption of mobile phone chargers. The charger's electricity consumption varies depending on its state. We measured the electricity consumption of various phone and charger models in different states. We also did panel studies on the recharging behavior of smartphone users. Based on these and other sources, we are able to estimate mobile phone recharging electricity...
Of late, an easy access to the Web 2.0 applications through the hand-held mobile devices has provided the consumers with the opportunity to express opinions on their invoked services conveniently. These opinions, also known as the Internet word of mouth, often impact a potential consumer's service selection notably in service rich urban terrains. Access to these opinions involves tariffs since they...
In order to provide a more resilient communication for a Neighborhood Watch type (NHW) system, a mobile middleware architecture using delay-tolerant network (DTN) technology and publish/subscribe concepts is described. The purpose of the middleware is to add resilience and reach to wireless communications, and also to reduce the battery drainage of the mobile devices, hence extending their operational...
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