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1、,目录,1,4,2,3,The development of mobile communication technology,What is 5G?,Why do we need 5G?,Research status and challenges of 5G.,5,Fi,G,Wi,1,The development of mobile communication technology,Simulation of mobile communication system,Digital mobile communication system,multimedia mobile communica
2、tions system,Broadband access and distribution network system,The development of mobile communication technology,2,What is 5G?,01 An English abbreviation,02 UNE,03 A green energy network,5G is the English abbreviation of“The fifth generation mobile communication technology”,Compared with 2G,3G and 4
3、G,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,super high reliability and whenever and wherever possible
4、 access.,Some details about 5G,3,Why 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 stopped.In order to cope with the future of mobile data traf
5、fic 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.,5G will penetrate into all areas of the society in the future,constructs an all-wave custome
6、r-focusinformation ecology system.,5G will make information break through the limitation of time and space,providing excellent interactive experience and imme-rsive information feast for the user.Through the seamless fusion way,5G will close the distance of all things,realize the intelligent interco
7、nnection between man and all things on earth.,5G will provide the access rate of fiber like,the using experience of“zero delay”,the ability to connect billions of devices,super high flux density,super high connection number density,super high mobility and other multi scene favorable service and inte
8、lligent optimization of business and user perception.,At the same time,5G will bring the network over a hundred times the energy efficiency and ultra hundred times the bit cost reduction.Finally 5G will realize the general hope of“Get the information whenever you want and all things on earth are at
9、your fingertips”.,4,Research status and challenges 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.,01,Centralized or distributed network architecture,02,T
10、he dividing line of access network and the core network,03,To realize network construction or function configuration,04,The influence of NFV and SDN,05,IMT-2020(5G)architecture is evolution or revolution,Part1 Five opening problem on designing 5G network architecture,The integration network of 5G an
11、d 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 inevitable trend for IMT 2020(5G).,In the networking of 5G and Wi-Fi,integration of netw
12、ork 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.,Integrate Wi-Fi into mobile communication network as a wireless technology under the
13、circumstance of integration of a variety of cellular network.To realize the multiple access mode of core network with other cellular technology,no-sense authentication,network security,green communication were proposed to become the key technical indications.,Some challenges,To work well in a multi service environment with seamless handover technologyInterference suppression technologyAutomatic adaptation technologySecurity problems.Seamless docking of secure protocol when integrating 5G and Wi-Fi.,Part 03 Security vision of 5G,The security key technologies,Researchers,THANK YOU VERY MUCH,
