文件名称:
Personal Networks_ Wireless Networking for Personal Devices.pdf
开发工具:
文件大小: 2mb
下载次数: 0
上传时间: 2019-08-14
详细说明： Preface RecentdecadeshaveshownatremendousexpansionoftheInternet.Thenumberof connectedterminalshasincreasedbyordersofmagnitude,traffichasgrownexponen- tially,coveragehasbecomeubiquitousandworldwide,andtoday’ssophisticatedWeb 2.0applicationsareincreasinglyprovidingserviceswhichhithertohavebeentherealm oftelecommunications,suchasSkypea ndvideoconferencing.Thishasevenledtothe thoughtthataccesstotheInternetmightonedaybeauniversalrightofeverycitizen. Thisevolutionwillaccelerateinthecomingdecades.ThedrivingfactorismobileInter- net,aresultofthecontinuingvalidityofMoore’slaw,accordingtowhichthedensityof microelectroniccircuitrydoubleseveryyearandahalf.Theimplicationisthatcomputing powerand,initswake,communicationpowerwillcontinuetoincreaseexponentially.Its corollaryisafallinthecostofprovidingacertainamountofcomputingandcommu- nicationpowertotheextentthatitisbecomingperfectlyfeasibletoequipeveryartifact withcomputingandcommunicationcapabilities.Thisiswhatenables‘theInternetof things’–itisexpectedthattherewillbeoftheorderof1000devicesperpersoninthe year2017(Tafazolli2004).Therangeofdevicetypesandtheircapabilitieswillbemind- boggling.Mostofthesedeviceswillbemobileoratleastwirelesslyconnected.Ahuge challengewillbetoexploitthisseaofdevicesandtheirconnectednesstocreatenoveland usefulapplicationswithoutdrowninginthecomplexityofmanaginglargeheterogeneous distributedsystems. Thevisionofpersonalnetworkswasbasedonthesetrends,whichwereforeseeable givenMoore’slawandthederivedtechnologyroadmaps.Itwastheresultofbrainstorming sessionstakingplacein2000atEricssonResearchandDelftUniversityofTechnology intheNetherlands.Thedreamwastocreateanenvironmentinwhicheverypersonhas athisfingertipsallthedigitaldevicesheownsregardlessofwhereheorsheisand wherethosedevicesare,aslongastheyareconnected.Weenvisagedapersontobe alwayssurroundedbya‘virtualdigitalbubble’formedbyhisorherpersonaldevices. Thispersonalnetworkwouldenhanceaperson’sprivateandprofessionalcapabilitiesin termsofaccesstoinformation,controlofhisenvironment,socialinteraction,etc.Itwould dynamicallychangeasthepersonmovedaroundandengagedindifferentactivities.It wouldhaveaglobalreachandwouldalwaysincorporatethosedevicesthataremost suitabletosupporttheperson. Aswebeganexploringtheidea,wecameupontheMopedprojectofRobinKravetz attheUniversityofIllinois,whichhadasimilarvision.Thistogetherwithotherideas triggeredtheconceptofapersonalnetwork,thesubjectofthisbook.Theideaswere elaboratedintwolargeEuropeanresearchprojects,MAGNETandMAGNETBeyond, andtwoDutchprojects,PNP2008andQoSforPNHome.Theselednotonlytothe xiv Preface developmentandprototypesoftechnicalsolutionsforthebasicfunctionalitiesrequiredin personalnetworks,butalsotofirstexperimentswithapplicationsandthestudyofpotential businessmodels.Theconcretesolutionsthatarepresentedinthisbookweredevelopedin thoseprojects.Inparallel,similarideashadbeendevelopedintheUKinthecontextofthe MobileVirtualCentreofExcellencebyJamesIrvineandJohnDunlopattheUniversity ofStrathclyde.Theirconceptwasnamedthe‘personaldistributedenvironment’. Theideasaboutpersonalnetworkswereverymuchcenteredonthepersonandhow hercapabilitiescouldbeenhancedbycreatingasynergeticenvironmentconsistingofthe hundredsofpersonaldigitaldevicesshemightowninthenearfuture.Anaturalnextstep wastoexplorehowsimilarsynergiescouldbeachievedbypoolingpersonalresources tosupportandenhancetheactivitiesofagroupofpeople.Thisledtotheconceptof federationsofpersonalnetworksbelongingtodifferentpeople.Theseideaswerealso exploredintheMAGNETBeyondandPNP2008projects. Thebasicfoundationshavebeenlaidtobuildpersonalnetworksandtheirfederations, andprototypesanddemonstratorshavebeenbuilt.Moreresearchisneededinparticular tocreateenvironmentsthatallowrapiddevelopmentofpersonalnetworkapplications, andtofacilitatedifferentbusinessrolesandmodelstomaketheconceptscommercially viable.Thiswillalsorequireeffortsinstandardization,whichhavealreadystarted. Themarketpulltobuildandusepersonalnetworksandtheirfederationsisnotthere yet.However,webelievethatweareonthebrinkofabreakthroughinthisrespect.If theWWRFpredictionsof1000devicesperpersonin2017andthe100billionmobile InternetdevicesinthenextdecadeforeseenbyCisco(CiscoSystems2009)becomea reality,conceptssuchaspersonalnetworkswillbegoodtoolsnotonlytomanagethe resultingcomplexity,but,evenmoreimportantly,tocreatehithertounknownopportunities toempowerpeopleintheirprivatelivesandatwork. Thisbookcoversthecoreconceptsofpersonalnetworksandfederationsofpersonal networks,andexplainstheirarchitecture.Itelaboratesindetailthevariousaspectsof thesearchitectures,includingtopicssuchasnetworking,self-configuration,security,per- sonalservices,servicesharing,andcontextmanagement.Italsodiscussestheoutcomes ofseveralpersonalnetworkresearchprojects,includingtheprototypes.Itisaimedat researchers,developers,andstandardizationexpertsinmobileandwirelesscommunica- tionsystemsandservices.Itshouldalsobeofinteresttograduatestudentsinthefieldof telecommunicationsanddistributedsystems. Thebookisorganizedasfollows.TheintroductoryChapter1describesthevisionunder- lyingpersonalnetworks.ThisisfollowedbyChapter2thatsetthestagebydiscussing userrequirementsandChapter3thatcoverstrendsinpersonalnetworking.Readerswho areuptodateonthestateoftheartofdevelopmentsinwirelessandmobiletechnologies andapplicationsandubiquitouscomputingmaygostraighttoChapter4thatdiscusses thepersonalnetworkarchitecture.Nextareseveraldetailedchaptersthatmayberead independently:Chapter5onclusterformationandrouting,Chapter6oninter-cluster tunneling,Chapter7oncommunicationbetweenapersonalnetworkandentitiesthatdo notbelongtoit(theso-calledforeigndevices),Chapter8onapplicationsupport,Chapter 9onsecurity,andChapter10onfederationsofpersonalnetworks.Chapter11introduces threedifferentexistingpersonalnetworkprototypesthatbuildsontheconceptsintroduced inthepreviouschapters.ThebookisroundedoffbyChapter12,whichgivestheauthors’ viewonthefutureofpersonalnetworks.
(系统自动生成,下载前可以参看下载内容)
下载文件列表
相关说明
- 本站资源为会员上传分享交流与学习,如有侵犯您的权益,请联系我们删除.
- 本站是交换下载平台，提供交流渠道，下载内容来自于网络，除下载问题外，其它问题请自行百度。
- 本站已设置防盗链，请勿用迅雷、QQ旋风等多线程下载软件下载资源，下载后用WinRAR最新版进行解压.
- 如果您发现内容无法下载，请稍后再次尝试；或者到消费记录里找到下载记录反馈给我们.
- 下载后发现下载的内容跟说明不相乎，请到消费记录里找到下载记录反馈给我们，经确认后退回积分.
- 如下载前有疑问，可以通过点击"提供者"的名字，查看对方的联系方式，联系对方咨询.
相关搜索:
