Dr. Kuang – Chiu, Huang

5G, What would be the content of it and your expectations

 

Pei – Chun, Kuo R96024047Chia – Wen, Lu R56024138

2013/12/25

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Outline

*Introduction

*Evolution from 1G to 4G

*Why we need 5G?

*Our Expectations to 5G

*Techniques of 5G

*Conclusion

 

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Introduction(1/2)*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.

 

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*Many organization and companies are devoted to developing 5G communication.

*EU

*Huawei - China

*Samsung - Korea

*NTT DoCoMo - Japan

 

Introduction(2/2)

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Evolution from 1G to 4G(1/4)*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.

 

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Evolution from 1G to 4G (2/4)*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.

 

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Evolution from 1G to 4G (3/4)*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.

 

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Evolution from 1G to 4G (4/4)*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.

 

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Comparison of All Generations

 

TechnologyFeatures

1G 2G 3G 4G

Start/ Deployment

1970 / 1984

1980 / 1999 1990 / 2002 Now

Data Bandwidth 2kbps 64kbps 2Mbps 1 Gbps

TechnologyAnalog Cellular

Technology

Digital Cellular

Technology

CDMA 2000(1xRTT, EVDO)

UMTS, EDGE

WiMax LTEWi-Fi

ServiceMobile

Telephony (Voice)

Digital voice, SMS, Higher

capacity packetized

data

Integrated high quality audio, video

and data

Dynamic Information

access, Wearable devices

Multiplexing FDMA TDMA, CDMA CDMA CDMA

Switching CircuitCircuit, Packet

Packet All Packet

Core Network PSTN PSTN Packet N/W Internet

Handoff Horizontal Horizontal HorizontalHorizontal

and Vertical

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Why We Need 5G?(1/2)

 

increase 1,000 fold

Massive growth in

Connected Devices

Large diversity of use case and

requirement

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*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.

 

Why We Need 5G?(2/2)

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Our Expectation to 5G(1/4)*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 .

 

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*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.

 

Our Expectation to 5G (2/4)

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*Medical

*5G may provide high bandwidth, high quality services and reliable connection.

*Such applications can be of great importance in future health care services.

 

Our Expectation to 5G (3/4)

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*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. 

Our Expectation to 5G (4/4)

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Protocol stack for 5G

Application LayerApplication( Services )

Presentation LayerSession 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

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Physical/MAC layers(1/2)*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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Physical/MAC layers(2/2)

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*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

 

Network layer(1/2)

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Network layer(2/2)

5G mobile phone network layer

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*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

 

Open Transport Protocol (OTP) layer

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* TCP modifications and adaptation are proposed

*Retransmit the lost or damaged TCP segments over the wireless

 

Open Transport Protocol (OTP) layer

* A transport layer to be downloaded and installed

*A specific wireless technology installed at the Base station

*Mobiles download them

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*Purpose:

*Provide intelligent QoS management over networks

 

Application layer

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

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Radio technology aspect of 5G Orthogonal approaches Non-orthogonal

approaches

Generation 1G and 2G 2G and 3G (WCDMA/CDMA2000)

Characteristics

1. Avoidance of intra-cell interference

2. Sensitive to cross cell interference

3. Insensitive with near far effect4. 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. FDMA2. OFDMA

1. CDMA2. IDMA

Advantage 1. Good foe high data rates1. Good for cancelling inter-

cell interference2. Robust against fading

Disadvantage1. 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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Hybrid spectrum of CDMA and OFDMA

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*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

 

Beam Division Multiple Access(1/2)

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Beam Division Multiple Access(2/2)

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*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

 

Conclusion

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Thank you for listening

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Q & A