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1、目录1423The development of mobile communication technology What is 5G?Why do we need 5G?Research status and challenges of 5G.5FiGWi1The development of mobile communication technology Simulation of mobile communication systemDigital mobile communication systemmultimedia mobile communications systemBroa
2、dband access and distribution network system19801G2G3G4G199020062011The development of mobile communication technology 2What is 5G?AnEnglishabbrevi-ation01AnEnglishabbreviationconvergednetwork02UNEAgreenenergynetwork03Agreenenergynetwork5G is the English abbreviation of “The fifth generation mobile
3、communication technology”Compared with 2G, 3G and 4G, 5G is not independent and brand-new. It is a combination and further development of present mobile communication technology. Besides the speed upgrade, 5G will also meet the requirements of large bandwidth, super high capacity, super dense site,
4、super high reliability and whenever and wherever possible access. Some details about 5G3Why do we need 5G?The necessity of 5G Why does the vision of 5G emerge？ Mobile communication has profoundly changed peoples life, but peoples pursuit for higher performance of mobile communication has never stopp
5、ed. In order to cope with the future of mobile data traffic explosive growth, the connection of massive device, the continuous emergence of various new services and applications scene, the fifth generation mobile communication (5G) system will emerge as times require.5Gwillpenetrateintoallareasofthe
6、societyinthefuture,constructsanall-wavecustomer-focusinformationecologysystem.5G will make information breakthrough the limitation of timeand space, providing excellentinteractiveexperienceandimme-rsive information feast for theuser.Throughtheseamlessfusionway,5Gwillclosethedistanceofallthings,reali
7、zetheintelligentinterconnectionbetweenmanandallthingsonearth.5G will provide the access rate of fiber like, theusingexperienceof“zerodelay”,theabilitytoconnectbillionsofdevices,superhighfluxdensity,super high connection number density , superhigh mobility and other multi scene favorableservice and i
8、ntelligent optimization of businessanduserperception.Atthesametime,5Gwillbringthenetworkoverahundredtimestheenergyefficiencyandultrahundredtimesthebitcostreduction.Finally5Gwillrealizethegeneralhopeof“Gettheinformationwheneveryouwantandallthingsonearthareatyourfingertips”.4Research status and challe
9、nges of 5G.To meet the demand of 5G, breakthrough in air interface technology is necessary. But innovation in network architecture is also significant and necessary so as to realize the vision of 5G.Centralized or distributed network architectureThe dividing line of access network and the core netwo
10、rkTo realize network construction or function configurationThe influence of NFV and SDNIMT-2020 (5G) architecture is evolution or revolutionPart1 Five opening problem on designing 5G network architecturePart 02 Integration of 5G and Wi-FiAn general introduction An general introduction of of Integrat
11、ion of 5G and Wi-Fi Integration of 5G and Wi-Fi The integration network of 5G and Wi-Fi can well solve the problem of rapid growing wireless traffic and user experience pursuit in 5G. Integration of multi-radio access technology, multiple needs and multiple internet were studied to become the inevit
12、able trend for IMT 2020 (5G). In the networking of 5G and Wi-Fi, integration of network application scene and fusion networking technology were introduced to be the inevitable demand, no-sense authentication, network security, green communication were proposed to become the key technical indications
13、.Integration of networking technology routeIntegrate Integrate Wi-Fi Wi-Fi into into mobile mobile communication communication network network as as a a wireless wireless technology technology under under the the circumstance circumstance of of integration integration of of a a variety variety of of
14、 cellular cellular network. network. To To realize realize the the multiple multiple access access mode mode of of core core network network with with other other cellular technologycellular technologykey technical indicationsno-sense no-sense authentication, authentication, network network security
15、, security, green green communication communication were were proposed proposed to to become become the the key key technical indications.technical indications.Some challengesTo work well in a multi service environment with seamless handover technologyInterference suppression technologyAutomatic ada
16、ptation technologySecurity problems. Seamless docking of secure protocol when integrating 5G and Wi-Fi.Part03Securityvisionof5GT h e s e c u r i t y ke y t e c h n o l o g i e s Large data security in 5G1Security problems brought by cloudization,virtualization and Software Defined Network, SDN 2The security of mobile intelligent terminal3researchersTHANK YOU VERY MUCH
