4G.pdf

MohammadMohammad AbualreeshAbualreesh
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OutlineOutline
„ IntroductionIntroduction
„ Definition,Definition, motivation,motivation, newnew…… inin 4G4G
„ 3G3G . 4G4G
„ ChallengesChallenges && NeedsNeeds
„ works (Models, features, air interface)
„ IndustryIndustry InitiativesInitiatives
„ TransmissionTransmission TechnologyTechnology
„ ConclusionConclusion
„ ReferencesReferences
EvolutionEvolution
Figure 1 shows the evolution of wireless technologies.
„ First Generation (1G): 1G wireless mobile
communication systems, was introduced in the early
1980s. 1G wireless was analog and supported the first
generation of analog cell phones. They include a
signaling protocol known as SS7 (Signaling System 7).
„ Second Generation (2G): 2G systems, fielded in the
late 1980s, were intended primarily for voice
transmission and was all about digital PCS.
EvolutionEvolution
„ Third Generation (3G): 3G in wireless will be a
deliberate migration to faster, data-centric wireless
networks. The immediate goal is to raise transmission
speeds from 125kbps to 2M bit/sec.
„ Fourth Generation (4G): In reality, as of first half of
2002, 4G is a conceptual framework for or a discussion
point to address future needs of a universal high speed
work that will interface with wireline
work seamlessly.
LessonsLessons fromfrom 3G3G
„ CustomerCustomer demanddemand waswas extremelyextremely uncertainuncertain
„ ExploringExploring andand trialingtrialing nextnext generationgeneration applicationsapplications
shouldshould bebe donedone upfrontupfront BEFOREBEFORE thethe definitiondefinition ofof
thethe requirementsrequirements forfor thethe systemsystem andand thethe airair interfaceinterface
„ WeWe needneed toto startstart thisthis activityactivity NOWNOW (2002(2002 timetime ofof
writingwriting thisthis MotorolaMotorola document)document) toto getget thethe 4G4G
requirementsrequir