The Wireless Revolution(无线革命)

Copyright©2007PearsonEducationCanadaTheWirelessRevolutionChapter8ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaTHEWIRELESSCOMPUTINGLANDSCAPETheWirelessRevolution•Mobilephonesarenowplatformsfordeliveringdigitaldata,usedforrecordinganddownloadingphotos,videoandmusic,Internetaccess,andtransmittingpayments8.6ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaTHEWIRELESSCOMPUTINGLANDSCAPETheWirelessRevolution(continued)•Anarrayoftechnologiesprovideshigh-speedwirelessaccesstotheInternetforPCsandotherwirelesshandhelddevicesandcellphones•Businessesincreasinglyusewirelesstocutcosts,increaseflexibility,andcreatenewproductsandservices8.7ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaTHEWIRELESSCOMPUTINGLANDSCAPEWirelessTransmissionMediaandDevices•Allwirelessmediarelyonvariouspartsoftheelectromagneticspectrum•Microwavesystemstransmithigh-frequencyradiosignalsthroughtheatmosphere•Communicationsatellitesareusedforgeographicallydispersedorganizations8.11ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaDevicesforWirelessTransmissions•Blackberry:emailhandheld–screen/keypad,organizer,email,voice•PDAs:smallhandheldcomputers–electronicscheduler•Cellphones:useradiowavestocommunicatewithtowersincells–messagepassedfromcelltocell•Smartphones:cansaveinformation,accessInternetManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaTHEWIRELESSCOMPUTINGLANDSCAPEMobileWirelessStandardsforWebAccess•WirelessApplicationProtocol(WAP):UsesWirelessMarkupLanguage(WML)andmicrobrowsers8.17ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaStandardsforwirelessnetworksestablishedbyInstituteofElectricalandElectronicsEngineers(IEEE)–IEEE802.15(Bluetooth)forPersonalAreaNetwork(PAN)–IEEE802.11(Wi-Fi)forLocalAreaNetwork(LAN)–IEEE802.16(WiMax)forMetropolitanAreaNetwork(MAN)–IEEE802.20(proposed)standardforWideAreaNetwork(WAN)WIRELESSCOMPUTERNETWORKSANDINTERNETACCESS8.19ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaBluetooth•CreatessmallPersonalAreaNetworks(PAN)•Canlinkupto8devicesin10-marea•LowpowerrequirementsWIRELESSCOMPUTERNETWORKSANDINTERNETACCESS8.20ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaABluetoothNetwork(PAN)WIRELESSCOMPUTERNETWORKSANDINTERNETACCESS8.21ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaWi-Fi•Threestandards:802.11a,802.11b,802.11g•Infrastructuremode:Devicesuseaccesspointtocommunicatewithwirednetwork•Ad-hocmode(peer-to-peer):WirelessdevicescommunicatedirectlywitheachotherWIRELESSCOMPUTERNETWORKSANDINTERNETACCESS8.22ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaAn802.11WirelessLANWIRELESSCOMPUTERNETWORKSANDINTERNETACCESS8.23ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaBenefitsofWi-Fi•Createslow-costwirelessLANstoprovideInternetaccesstoconferencerooms,workstations•Allowshot-spotsinpublicareassuchasuniversitycampuses,airports,coffeeshopsforaccesstotheInternetWIRELESSCOMPUTERNETWORKSANDINTERNETACCESS8.24ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaChallengesofWi-Fi•Security•SusceptibilitytointerferenceWIRELESSCOMPUTERNETWORKSANDINTERNETACCESS8.25ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaM-COMMERCEANDMOBILECOMPUTING•M-commerce:–TheuseoftheInternetforpurchasinggoodsandservicesandalsofortransmittingmessagesusingwirelessmobiledevices•Mobilecomputing:–Enablesinternet-enabledcellphones,PDAs,andotherwirelesscomputingdevicestoaccessdigitalinformationontheInternetfromanylocation•Nomadiccomputing–Movingfromhotspottohotspot8.29ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaM-COMMERCEANDMOBILECOMPUTINGM-CommerceServicesandApplications•Information-basedservices:–Instantmessaging,e-mail,searchingforamovieorrestaurantusingacellphoneorhandheldPDA•Transaction-basedservices:–Purchasingstocks,concerttickets,music,orgames;searchingforthebestpriceforanitemusingacellphoneandbuyingitinaphysicalstoreorontheWeb8.31ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaM-COMMERCEANDMOBILECOMPUTINGM-CommerceServicesandApplications(continued)•Personalizedservices:–Servicesthatanticipatewhatacustomerwantsbasedonthatperson’slocationordataprofile,suchasupdatedairlineflightinformationorbeamingcouponsfornearbyrestaurants8.32ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaCustomerPersonalizationwiththeUbiquitousInternetM-COMMERCEANDMOBILECOMPUTING8.33ManagementInformationSystemsChapter8TheWirelessRevolutionCopyright©2007PearsonEducationCanadaM-COMMERCEANDMOBIL