Multimedia Wireless Network (Chapter 1. Multimedia Application) 2009 년 9 월.

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Presentation transcript:

Multimedia Wireless Network (Chapter 1. Multimedia Application) 2009 년 9 월

2 Preface  Author : Aura Ganz, Ziv Ganz, Kitti Wongthavarawat  Contents  Part 1. Multimedia Applications and Quality of Service (QoS)  Part 2. Wireless Local Area Networks  Part 3. Wireless Metropolitan Area Networks  Part 4. Wireless Personal Area Networks  Part G and 3G Network

3 Application (Evolution)  Evolution  Internet usage is dramatically changing  다양한 형태의 Wireless Network 를 이용한 Application (Business Model) 예 고객의 다양한 요구  Wireless Network 의 발전  Business Application 의 발전  Ubiquitous 모바일 무선기술 ( 블루투스, BWLAN, UWB, Zigbee, RFID, Wireless Sensor, 광대역무선 3G, 4G) 에 대한 정보공유 Internet Architecture 발전

4 Application (Video and Audio Streaming)  Video and Audio Streaming news, entertainment, remote education, TV…  Streaming technology  RealAudio, RealVideo, Media Player, Packet -Video

5 Application (Peer-to-Peer Computing)  Peer-to-Peer Computing The sharing computing resources (memory, file,…)  Napster, Groove, Endeavors… 의 소프트를 이용한 p2p work group 서비스

6 Application (Digital Money Transactions)  Digital Money Transactions Mobile Phone 를 이용한 은행업무  DoCoMo and Coca-Cola “Cmode”

7 Application (Entertainment)  Entertainment

8 Application (File and Picture Sharing)  File and Picture Sharing Internet 을 통한 File 및 Digital Picture 공유  File sharing  Centralized file sharing

9 Application (File and Picture Sharing)  Distribute file sharing  Digital Picture Share

10 Application ( and Multimedia Messaging)  and Multimedia Messaging 가입자 서로가 다양한 메시지 (picture, graphics, video, audio file) 를 서 로 교환 가능한 서비스  SMS (Short Message Service)  MMS (Multimedia Messaging Service)  EMS (Enhanced Messaging Service)  서비스 예

11 Application (Wireless Gaming)  Wireless Gaming  Wide 를 이용한 Gameboy, Cybiko 등 게임의 성공  Sega, Nintendo, Disney 등 의 무선 디바이스를 이용한 게임 의 전략적 접근  JAMDAT Mobile 의 “Gladiator” 의 성공적인 진입 (2001 년 )   MGIF (Mobile Game Interoperability Forum)

12 Application (Voice and Telephony)  Voice and Telephony  Cellular Phone  Voice & Data (2.5G, 3G system)  VoIP Data network 상에서의 Telephone service

13 Application (Location-Based Service)  Location-Based Service Location-Based service 는 GPS (Global Positioning System) 를 이용한 교통방송, 고객의 위치정보 및 여러 사업적인 정보를 제공한다.  United States military force  영국과 프랑스간 터널공사  E911  고객의 위치정보 서비스  FGDC (federal Geographic Data Committee)

14 Application (Telemedicine)  Telemedicine Wireless Communication 을 이용한 원격지 의료 진료  RCST (Remote Communities Service Telecentre) system (in Canada)  IEMN (Integrated Emergency Medicine Network)

15 Application (Business Application & Personal Area Device Connectivity)  Business Application  원격지에서의 retail man 에게 각종 정보 및 거래 내용을 센터로 전 송 및 관리  Personal Area Device Connectivity  Consumer devices  Games  Professional devices  Sport training devices  Hospital devices  Military devices

16 Application (Telematics (Automobiles))  Telematics (Automobiles) 새로 개발된 자동차는 다양한 디지털 장비의 설치로 안전, 작동, 통신 및 각 종 엔터테인먼트를 즐길 수 있다  Mercedes-Benz (phone, 자동 Headlights, 각종 센서 )  BMW  , Idrive system, Mayday system (GPS, 자동 방법 장치 등 )  Motorola`s iRadio project  AMIC (Automotive Multimedia Interface Collaboration) Open standard 개발, Ford, Daimler-Chrysler, General Motors, Renault, Toyota 등

17 Application (Telematics (Automobiles))

18 Main Protocols (SMS)  Short Message Service (SMS)  Cell Phone, PDA, PC 등을 이용한 단문자 전송 서비스  1990 대 중반에 표준화  GSM (Global System for Mobile Communication), TDM (Time Division Multiple Access), CDMA (Code Division Multiple Access)  140~160 alphanumeric characters(30~40 words)  Application : mail, fax 및 banking, information update 서비스  Cell phone 에서 Control channel 과 Voice channel 의 분리에서 제한된 Control channel 이용 -  서비스 확장에 따른 대역폭 요구

19 Main Protocols (SMS)  시스템 구성도  MC (Message center)  SMS Server  MSC (Mobile Switching Center)  HLR (Home Location Register)  MAP (Mobile Application Part)

20 Main Protocols (EMS)  Enhanced Messaging Service (EMS)  Evolved from SMS (in early 2000)  Include text-based SMS, pictures, melodies, sound marks, graphic, animations  Supports pictures (16*16, 32*32, 255*255 pixels), sound, animation

21 Main Protocols (MMS)  MMS (Multimedia Message Service)  Support text, graphics, speech, voice, audio and video clip  2.5G, 3G 를 이용한 다양한 멀티미디어 전송 (JPEG, GIF, MPEG4…)  별도의 Data channel 을 이용한 voice 및 data 전송

22 Main Protocols (MMS) 예예 “ 기억에 남는 인기 동영상에 ” “ 자신의 음성을 녹음하여 ” “ 받으시는 분께 확실한 메시지를 전달하세요 ! ” 영화 [ 엽기적인 그녀 ] 의 동영상 + 음성 녹음 & 텍스트 메시지 “ 사랑해 강쇠야 !!! ” 사랑해 강쇠야 !!! 동영상이 가지고 있는 상황 설정에, 전달하고자 하는 메시지를 음성으로 녹음하여 전달하고자 하는 메시지의 호소력을 극대화하고, 직접적인 이벤트를 통하여 흥미 유발 및 재미 유발

23 Main Protocols (MMS) “ 좋아하는 뮤직비디오에 ” “ 직접 노래를 불러 ” “ 자신만의 뮤직비디오를 만드세요 !!! ” 사용자가 좋아하는 노래의 뮤직비디오에 노래를 더빙하여 세상에 하나 밖에 없는 자신만의 뮤직비디오 제작. 파일로 다운을 받거나 개인 저장함이 있어서 저장 후 여러 곡의 뮤직비디오를 만들어 CD 를 제작할 수 있다. 가수가 되고픈 욕구의 대리만족과 엔터테인먼트 요소로 흥미와 재미 유발

24 Main Protocols (WAP)  WAP (Wireless Application Protocol)  The goal is to easily access and interact with information over the Internet.  WAP forum (WAP2.0, in 2002)  Pull Model  Push Model  EFI (External Functionality Interface)

25 Main Protocols (WAP)  WAP proxy  WAP2.0 does not require  Optimized the communication process  Secure channel  Caching  Translate between WAP and other WWW protocol