Smartphone Mobile Compung · Grad student in EE CSEP590B/F ‐ Winter 2011 ‐ 03 January 2011 2...

UniversityofWashington

SmartphoneMobileCompu9ngCSEP590B/FWinter2011(firstoffering)1stLecture,03January2011

Instructor:

GaetanoBorriello

TeachingAssistant:TemitopeOluwafemi

CSEP590B/F‐Winter2011‐03January2011 1


Whoweare

  GaetanoBorrielloPhDUCBerkeley1988IndustryexperienceatXeroxPARC(‘80‐’85)andIntel(’01‐’06)BackgroundinVLSI,CAD,embeddedsystems,ubicompMostrecentlymobileapplica9onsforlow‐incomese]ngs

  TemitopeOluwafemiGradstudentinEE



OverviewforToday

  Mobilecompu9ngonsmartphones

  Capabili9esandtrends  Applica9ons

  Coursestructureandgoals  Groupprojects



TheMainQues9onsforthisQuarter

  Whatmakesmobilecompu9ngonphonesdifferentthanmobilecompu9ngonlaptopsortablets?

  Whataresomeofthecomputerscienceandengineeringconceptsthataremostrelevant?

  Whataretheapplica9onsthatbestshowcasethedifferences?

  Inwhatcontextsaretheseapplica9onsbeingusedandwhy?

  Howdowebuildtheseapplica9ons?



TechnologyTrends

  Size

  Wirelessconnec9vityandbandwidth  Compu9ngpowerandstorage

  Sensors  Power



Size



Wirelessconnec9vityandbandwidth

  1G–early1980s–voice

  2G–early1990s–GSM,SMS,digitalvoice  2.5G–steppingstoneto3G,GPRS

  3G–early2000s–fasterdatatransmission,highercapacity  4G–early2010s–evenhigher‐speeddata,nostandard



Compu9ngpower

  Processors  50MHzto2GHz

  mulNpleprocessors:basebandprocessing,networking,apps,I/O,etc.

  Memory  .5GBROM

  .5GBRAM

  Storage  32GBSD



SensorsandUserInterface

  Camera+flash

  Microphone+speakers  Accelerometer

  Barometer/al9meter  GPS

  Proximityinfrared

  Ambientlight  Compass

  Gyroscopes  Touchscreens

  Depth‐rangingIRcameras  Pico‐projectors



Power

  Typicalstand‐by9meof10days,talk9meof8hrs

  BakeriesandMoore’sLaw



Power

  Powerbudgetof1400mAh



iPhone4

Phonetypes

  Basicphones(voice,SMS)–low‐9er

  Featurephones(basicapps,datacomm)–mid‐9er  Smartphones(moreapps,web,GPS)–high‐9er


NokiaC1 NokiaC5 NexusOne BBTorch Window7


MarketShare

  InUS,about45%ofnewphonesaresmartphones,restarefeaturephones,virtuallynolow‐9erphones

  SmartphonescurrentlyevenlysplitbetweenApple,RIM,andAndroid–about25‐30%each,MicrosonandNokiatakeupremainder

  Inemergingeconomies,low‐9erphonesares9llthelargestsegmentbutfeaturephonesaregaining



RecentOSmarketshare



Cumula9veOSmarketshare









Convergence


wirelessphones

laptopsmessagingandvoice

datacomm

touchscreens

wirelessLAN

cellularmodems

tablets

smartphones

featurephones

GPSandsensors

pads

cameras

VoIPskype

tethering

BT

appstores

ereaders

cloud

PDAs

stylus firstspecializedapps

pods


Convergence

  PDAs+phones=smartphones

  Laptopdataconnec9vitynowonphones(e.g.,email,web)  Diversityofmessagingmodes

  Whatreallydis9nguishesdevices?  compuNngpower?

  apps?  input/output?  screensize?  usagemodels?



Whatdevicesdowecarryaround?Why?



Deepvs.shallowweb

  Thewebthroughthedesktopisadeepweb  manystepstogettoinformaNonwewant

  ampleNmetosiYandcollect  mulN‐purposetools,e.g.,browsers

  weneedsearchenginesandbookmarking

  Thewebthroughthephoneisashallowweb  informaNonmustbereadywhenneeded  interacNonsmustbeshortanddirect

  single‐purposetools,e.g.,apps  withhundredsofthousandsofapps,howdowefindwhatweneed?

  Sharinganddissemina9ngisaneedinbothspaces



Classifica9onofApplica9ons

  Inwhatsitua9onsisitused?

  Whatcontextinforma9onisneeded?  Howautoma9callydoestheapplica9ongatheritsinputs?

  whatsensorsdoestheapplicaNonexploit?istheuserinvolved?  Istheapplica9onself‐contained?

  doestheapplicaNonneedtoconnecttoweborcloud?

  Howmuchcommunica9ondoesitrequire?andinwhichdirec9on?

  Howmuchstoragedoesituse?where?



Exercise:someexamplesapplica9ons

  Choosetwoofyourfavoriteapplica9onsandfill‐incolumns


App Use Context Sensors Self‐contained

Commrequirements

Storagerequirements

Shazam IdenNfyandpurchasemusic

None RecordinginiNatedbyuser

No,serverdoessongmatching

Synchronoustoserver

Justforrecording

OneBusAway Whennextbuswillarrive

CurrentlocaNon

GPS/WiFi No,serverprovidesbusdata

Synchronous MInimal

Twi_er Statusupdates

None None No,serverpropagatesmessage

Asynchronous Messagequeue

Barcodescanner

Readbarcodes

None Camera,scanposiNonedbyuser

Yes,toread;No,togetreviews/buy

Synchronous None

Pedometer Countstepsandcalories

MoNonthroughouttheday

Accelerometry,locaNon

Yes,eventuallyuploaddata

Asynchronous Sensorsamples


Aroundtheworld



Aroundtheworld

  Phonesarethepersonalcompu9ngdevice

  Mostoftheworld’spopula9onwillreachthewebthroughphones,notdesktops

  Whatnewmodelswillemerge?



Mobiles9llrising



Broadbandgap



CourseLogis9cs

  Lectures/discussions  weonlyhave8ofthese(MLKandPresidents’Day)

  Readings  acoupleofhoursperweek

  Project(weeklyassignments  email/phoneinteracNonstoconvergeontopics  individualresearchpaperaspossiblealternaNve

  Websitehas(orwillhave)theinforma9onyoushouldneed  h_p://www.cs.washington.edu/csep590b/11wi/



Aboutyou


GaetanoBorrielloProfessorfor23yearsUniversityofWashingtonHometown:Napoli,Italia

Hobby:Walkingaround(smallish)islands.

Interests:Howtousemobilephonestoimprovethelivesofpeopleinlow‐incomese]ngs.Understandinghowtechnologytrendswillleadtodifferentusagemodels.Workingwithalargerteamtoputtheseideasandtechnologiesintoprac9ceandeverydayuse.


Your3favoritemobileapps

  FindappsonAndroidMarketandApple’sAppStoreifyoudon’thavethemalready

  Ideallydownloadandexperimentwiththem  Describethemaswedidtonightwiththetaxonomy

  Explainwhytheyaretruly“mobile”apps



Declareyourinterestsandbrainstorm


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Smartphone Mobile Compung · Grad student in EE CSEP590B/F ‐ Winter 2011 ‐ 03 January 2011 2...

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