Bubble-Sensing :Binding a sensing task to the physical world usingmobile phones

INTRODUCTIONHere 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-SensingSensing 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-Sensing

Bubble-creation phase

Bubble Server

Bubble AnchorBubble Creator

Mobile Sensor Mobile Sensor

Bubble Maintenance PhaseDue 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 based2. Mobility based

Bubble-Server

Bubble CarrierBubble Anchor

Mobile Sensor

Mobile Sensor

Bubble Restoration Phase

ArchitectureProgramming languagesCommunicationSensorClassifierSystem integration

ProblemsHold the bubble in the area of interest.

Recover from lost bubble.Exploit heterogeneous devices.

Privacy and security concernsThe 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 WorkAs 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.

ConclusionSo 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.

ReferencesA.T. Campbell, S.B. Eisenman , N.D. Lane, E.

Miluzzo , R.A. Peterson , People-centric urban sensing, in: Proc. of 2nd ACM/IEEE Intl Conf. on Wireless Internet, WICON 06, ACM Intl Conf. Proc. Series, vol. 220, No.18,Boston, Aug 2 5, 2006, (Invited Paper).

J.Burke , D.Estrin , M. Hansen, A. Parker, N.Ramanathan , S. Reddy, M.B.Srivastava, Participatory sensing, in: Proc. of 1st Workshop on Wireless Sensor Web, WSW 06,Boulder, October 31, 2006.

Contd..T.Abdelzaher , Y. Anokwa , P.Boda, J.Burke,D.

Estrin,L.Guibas, A. Kansal,S. Madden and J. Reich, Mobiscopes for human spaces,IEEE PervasiveComputing 6(2) (2007)

S.B. Eisenman, A.T. Campbell, SkiScape sensing, in: Proc. of ACM 4th Intl Conf. Embedded Networked Sensor Systems, SENSYS04, 2006.

Thank You