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Piconet: Embedded Mobile Networking.


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Piconet: Embedded Mobile Networking. F. Bennett, D. Clarke, and J. B. Evans in IEEE Personal Communications, Vol. 4, No. 5, Oct. 1997, pp. 8-15 -- presented by Yu-Chee Tseng --. Embedded Mobile Networking. There already exist many simple communication devices around our everyday life:
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Slide 1

´╗┐Piconet: Embedded Mobile Networking F. Bennett, D. Clarke, and J. B. Evans in IEEE Personal Communications, Vol. 4, No. 5, Oct. 1997, pp. 8-15 - displayed by Yu-Chee Tseng -

Slide 2

Embedded Mobile Networking There as of now exist numerous straightforward specialized gadgets around our ordinary life: telephone, fax, duplicate machine printer, compact PC, PDA electronic access control to structures and streets keeping money machine open data terminal, and so forth. Envision the amount we may profit if these gadgets can TALK with each other.

Slide 3

Benefit of Embedded Networks Embedded Network: a little, remote, compact specialized gadget can be installed in numerous specialized gadgets and along these lines interface them together Enhanced individual availability we have a huge number of associations with numerous gadgets Context mindfulness the network contrasts as we move around

Slide 4

Piconet of ORL Developed by ORL (Olivetti and Oracle Research): broadly useful low controlled impromptu radio Can converse with a large number of figuring and specialized gadgets: static, portable, or implanted utilized for detecting, correspondence, and control to bolster just a "base level" of availability between things.

Slide 5

Technological Choices of Piconet pervasive occasionally pass on its state to others indoor or open air, uncovered or implanted, viewable pathway or diffused low-control, low-rate, low-go rest (exchanged off) more often than not radio-based IrDA (infrared) was not picked as its unseemliness in outside use

Slide 6

Prototype Piconet Hardware size: 12cm x 7cm actualized in FPGA real segments: radio convention runtime environment characteristic store

Slide 7

Radio 418 MHz FM handset around 5 meters of transmission range low-fueled and shoddy more prominent re-utilization of radio channel near human's meaning of " nearness "

Slide 8

Protocol impromptu, without base station for brief exchange, not seemingly perpetual stream of information 4b6b DC adjusted encoding bolster 2 sorts of multicast: surely understood (pre-alloted) transient (progressively made)

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Runtime Environment on-load up portion a message line a scheduler on-load up loader

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Attribute Store In Piconet, every hub is in charge of portraying itself to whatever is left of the world. whatever other hub is in this way ready to figure out what sort of administrations is given by the gadget. A mapping between a gadget's name and administration sort ought to be upheld. called "property store" in Piconet

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What a Piconet Node Looks Like?

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Board and radio piggy-back Radio piggy-back set up

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Application #1: Automatic Temperature Report a temperature sensor with a Piconet interface another hub approaching this sensor a correspondence case: Query Sensor's Reply GetAttribute("/name") "/name=Temperature Sensor" //find sensor name GetAttribute("/temp/C/value") "/temp/C/esteem" = "17" //get temperature WatchAttribute("/temp/C/change5") "WatchHandle 01" 01 "tmp/C" = "24" //present a handle, and //look for any temperature change ... UnwatchAttribute(01) //discharge handle //or timeout, if the hub vanishes

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Application #2: Pico + GPS in a Car an in-auto GPS with Pico (can converse with numerous gadgets in the auto) a guide framework for route a PDA in satchel which logs a "follow" of this trek (when coming back to office, the log can be consequently entered to database) an "approved" cellular telephone which can report the driver's ebb and flow area to somebody far away (or, for area coordination)

Slide 15

Application #3: Integration with Existing Services "approved" telephone, printer, and so forth control of home machines: VCR, microwave, clock, radio, PDA house warming framework, control house lighting interfacing with systems for email, WWW, and so forth. Just your creative energy can confine!!

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Application #4: Tour Guide data terminals at building (historical center, exhibition, vacationer site) Pico at street sign and entryway to guide course and offer visit information.

Slide 17

Demo A music CD with a piconet!!