2. * Introduction * Evolution from 1G to 4G * Why we need 5G? * Our Expectations to 5G * Techniques of 5G * Conclusion 2

3. * 5G is a terminology that is used for the 5th generation mobile technology. * 5G is still in the concept stage. * The absence of official standard makes the 5G have limitless possibilities. 3

4. * Many organization and companies are devoted to developing 5G communication. * EU * Huawei - China * Samsung - Korea * NTT DoCoMo - Japan 4

5. * 1G * 1G refers to the first-generation of mobile telecommunications. * It is based on analog system and used Frequency-division multiple access (FDMA). * The cellular networks were unable to interoperate between countries. 5

6. * 2G * It was developing in 1990s. * Two systems : GSM(Europe), CDMA(U.S.) * These differed from the previous generation by using digital instead of analog transmission and providing service like SMS. 6

7. * 3G * ITU and 3GPP defined the demands for 3G mobile networks with the IMT-2000 standard. * It uses packet switching rather than circuit switching for data transmission. * Services include wide-area wireless voice telephony, video calls, and broadband wireless data, all in a mobile environment. 7

8. * 4G * It is a successor to the third generation (3G) standards. A 4G system provides mobile ultra- broadband Internet access * It provides speed up to 100Mbps. * LTE (Long Term Evolution) is considered as 4G technology. 8

9. Technology Features 1G2G3G4G Start/ Deployment 1970 / 19841980 / 19991990 / 2002Now Data Bandwidth 2kbps64kbps2Mbps1 Gbps Technology Analog Cellular Technology Digital Cellular Technology CDMA 2000 (1xRTT, EVDO) UMTS, EDGE WiMax LTE Wi-Fi Service Mobile Telephony (Voice) Digital voice, SMS, Higher capacity packetized data Integrated high quality audio, video and data Dynamic Information access, Wearable devices Multiplexing FDMATDMA, CDMACDMA Switching CircuitCircuit, PacketPacketAll Packet Core Network PSTN Packet N/WInternet Handoff Horizontal Horizontal and Vertical 9

10. increase 1,000 fold 10

11. * UK want to regain a world leading position and to be at the heart of new business creation and product development around the technologies with rich applications. 11

12. * Mobile Cloud Computing Support * Allow use applications without installation and access their personal files at any computer with internet access. * Can reduce the cost of purchasing physical infrastructure by renting the usage from a content provider. * This could make our user to obtain much more real-time application. 12

13. * To Reduce Our Waiting Time * Because of 5G’s speed, we might spend less than one minute to download HD movies or games. * Pervasive Networks * No longer be restricted to a single network * It provide multiple concurrent data transfer and also user can move globally. 13

14. * Medical * 5G may provide high bandwidth, high quality services and reliable connection. * Such applications can be of great importance in future health care services. 14

15. * High Quality of Transmission and High Security * Monitors could send real-time image without latency. * Will support everything from simple M2M devices * We could do more authentication in our communication. That means we could ensure whether the supplicant is the true party. 15

16. 16 Application Layer Application( Services ) Presentation Layer Session layer Open Transport Protocol (OTP) Transport Layer Network layer Upper network layer Lower network Layer Data link Layer(MAC) Open Wireless Architecture (OWA) Physical Layer

17. 17 * Introduces an open wireless architecture (OWA) mobile terminal design * Provide multi-dimensional open baseband processing modules with open interface parameters to support different existing and future wireless communication standards

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19. * To maintain virtual multi-wireless network environment * Separation of network layer into two sub-layers in 5G mobiles * Upper network address (IPv6) → for the mobile terminal * Lower network IP addresses (IPv4 or IPv6), and vice versa → for each interface 19

20. 20 5G mobile phone network layer

21. * Problems that lost segments in the communication * In TCP version is that network congestion * In wireless network is owing to higher bit error ratio interface 21

22. * TCP modifications and adaptation are proposed * Retransmit the lost or damaged TCP segments over the wireless 22 * A transport layer to be downloaded and installed * A specific wireless technology installed at the Base station * Mobiles download them

23. * Purpose: * Provide intelligent QoS management over networks 23 Service quality testing and storage of measurement information in database * Such QoS parameters like : jitter, losses, bandwidth, reliability … * Used by intelligent algorithms as system process * For the best wireless connection upon required QoS and cost constraints

24. 24 Orthogonal approachesNon-orthogonal approaches Generation1G and 2G2G and 3G (WCDMA/CDMA2000) Characteristics 1.Avoidance of intra-cell interference 2.Sensitive to cross cell interference 3.Insensitive with near far effect 4.Free window for synchronization and treatment for ISI using cyclic- prefix method 1.Sensitive with intra-cell interference 2.Mitigate cross-cell interference 3.Sensitive with near far effect 4.No need for synchronization Multiplexer 1.FDMA 2.OFDMA 1.CDMA 2.IDMA Advantage1.Good foe high data rates 1.Good for cancelling inter-cell interference 2.Robust against fading Disadvantage 1.Not efficient for inter-cell interference 2.Low transmission power 1.Not scalable for high data rate transmission in asynchronous transmission environments 2.Its bandwidth is much larger than the data rate used to suppress the interference

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26. * Mobile communication system provide good quality service * To a large number of users at lower cost * Challenge ： increase system capacity and quality within a limited frequency spectrum TDMA 、 CDMA 、 FDMA 、 OFDM * Korean research and development has suggested BDMA as a radio interface for 5G 26

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28. * We expect an accelerating pace of technological change owing that the wireless systems is limited to predict and important in our society * Though 5G is not published in any official document, some countries, such as UK, Korea, and Japan, now is developing and to be a new revolution in wireless systems market * We take a positive attitude to 5G and hope it could improve the quality of our lives in 2020 28

29. 29 Thank you for listening

30. 30 Q & A