Presentation on theme: "Bubble-Sensing : Binding a sensing task to the physical world using mobile phones."— Presentation transcript:
Bubble-Sensing : Binding a sensing task to the physical world using mobile phones
INTRODUCTION Here we present the bubble-sensing system that support the persistent sensing of a particular location, as required by user requests. Conceptually, a user with a phone that has opted into the bubble-sensing system visits a location of interest, presses a button on his phone to affix the sensing request to the location, and then walks away. The sensing request persists at the location until the timeout set by the initiator is reached.
Bubble-Sensing Sensing tasks are created and maintained in the bubble-sensing system through the interaction of a number of virtual roles. Virtual roles- Bubble creator Bubble anchor Bubble carrier Sensing node
Bubble-creation phase Bubble Server Bubble Anchor Bubble Creator Mobile Sensor
Bubble Maintenance Phase Due to uncontrolled mobility of the creator, the creator may leave the bubble location while task is still active. So to anchor the bubble to the location of interest we use bubble anchors. Two variants for bubble anchor selection : 1. Location based 2. Mobility based
Problems Hold the bubble in the area of interest. Recover from lost bubble. Exploit heterogeneous devices.
Privacy and security concerns The sharing of device resources with unknown third parties. Individual is privacy concerning their daily activities is at risk from other users if bubble sensing system is misused.
Related Work As the mobile phone is ubiquitous, and the discussion of a mobile phones used as a sensing device has some history no large-scale mobile cell phone sensor network shave yet been deployed in practice. In the last few years, the smart phone market has grown rapidly (e.g., Nokia N95, Apple iPhone ), cultivating ground for research on mobile sensor networking.
Conclusion So mobile sensor nodes collaborate and share sensing and communication resources with each other in a cooperative sensing environment. So we presented an approach to support persistent location-specific task in a wireless sensor network composed of mobile phones.
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