4G

발표자 : 전지훈

What is 4G? (1/3)

The next complete evolution in wireless communications

SBI2K(Systems Beyond IMT 2000) ITU(International Telecommunication Union) 의 국제 표준화 기구

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What is 4G? (2/3)

No formal definition for what 4G is

Certain objectives that are projected for 4G Fully IP-based integrated system

Capable of providing between 100 Mbit/s and 1 Gbit/s speeds both indoors and outdoors, with premium quality and high security

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What is 4G? (3/3)

A 4G system will be able to provide a comprehensive IP solution

Voice, data and streamed multimedia can be given to users on an "Anytime, Anywhere" basis

Higher data rates than previous generations

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Objectives of the 4G standard (1/3)

A spectrally efficient system

High network capacity more simultaneous users per cell

A nominal data rate of 100 Mbit/s while the client physically moves at high speeds relative to the station, and 1 Gbit/s while client and station are in relatively fixed positions

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Objectives of the 4G standard (2/3)

A data rate of at least 100 Mbit/s between any two points in the world

Smooth handoff across heterogeneous networks

Seamless connectivity and global roaming across multiple networks

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Objectives of the 4G standard (3/3)

High quality of service for next generation multimedia support real time audio, high speed data, HDTV video

content, mobile TV, etc

Interoperability with existing wireless standards

An all IP, packet switched network the infrastructure for 4G will be only packet-based

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Principal technologies (1/2)

Baseband techniques OFDM(Orthogonal frequency-division multiplexing) : To exploit the frequency selective channel property

MIMO(multiple-input and multiple-output) : To attain ultra high spectral efficiency

Turbo principle : To minimize the required SNR(Signal-to-noise ratio)

at the reception side

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Principal technologies (2/2)

Adaptive radio interface

Modulation, spatial processing including multi-antenna and multi-user MIMO

Relaying, including fixed relay networks (FRNs), and the cooperative relaying concept, known as multi-mode protocol

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Future of 4G (1/2)

Standards of 4G technologies Mobile WiMax Evolution : 우리나라 주도 , data 전송에 유리 3GPP Long Term Evolution : 유럽 주도 , 세계 이동통신 시장을 장악하고 있는 (W-CDMA) 서비스를 기반으로 함 3GPP2 Ultra Mobile Broadband : 퀄컴 주도 , 동기식인 EVDO 기술의 차세대 버전

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Future of 4G (2/2)

Advantages 빠른 통신 속도 : 다양한 멀티미디어 서비스 및 data 전송 Convergence : 음성 , 영상 , 데이터가 한꺼번에 처리되는 트리플 플레이 서비스 (TPS) 가 가능

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Future of 4G (3/3)

Disadvantages 구축 비용 : 3G 에서 4G 로 넘어가기 위해 필요한 네트워크 장비의 교체 등 IP 의 확보 : Fully IP-based integrated system 이므로 충분한 수의 IP 필요 – IPv6

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Reference

http://www.wikipedia.org/

http://www.etnews.co.kr/

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Any Questions?

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Thank you.

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