Thuyết trình chủ đề mobile phone systems

MOBILE PHONE SYSTEM ➢ ➢ ➢ ➢ 7140266 Vũ Hoàng Việt 7140264 Võ Thái Tuyến 7140255 Đỗ Duy Quốc 7140260 Nguyễn Hồng Tín TOC ●History ●First generation (1G): Analog voice ●Second generation (2G): Digital voice ●Third generation (3G): Digital voice and data ●Fourth generation (4G): 3G + Mobile ultra-broadband Internet access Mobile Phone System ●Used for wide area voice and data communication ●Sometimes called cellphones ●Has generations: 1G, 2G, 3G ●Mobile phones should not be confused with cordless phones Mobile Phone System The first mobile system was devised in the U.S by AT&T and mandated for the whole country by the FCC Martin Cooper, a Motorola researcher and executive (Source: Wikipedia) ( The prototype handheld phone used by Dr Cooper w eighed 1.1 kg and measured 23 cm long, 13 cm deep and 4.45 cm wide The prototype offered a talk time of just 30 minutes and took 10 hours to recharge.) Mobile Phone System ● Usage and adoption in US vs Europe o o o Several systems vs only one system Mixed phone number Prepaid mobile phone in Europe First Generation – 1G (Analog Voice) ● Mobile radio telephones (maritime and military) (Source: Wikipedia) First Generation – 1G (Analog Voice) ● In 1946, the first system for car-based telephones was set up in St Louis (Push-to-talk systems) ● CB radio, taxis, and police cars often use this technology First Generation – 1G (Analog Voice) ● In the 1960s, IMTS (Improved Mobile Telephone System) was installed ● Use a high-powered (200-watt) transmitter ● Support 23 channels spread out from 150 MHz to 450 MHz First Generation – 1G (Analog Voice) ● ● ● ● Advanced Mobile Phone System (AMPS) first installed in the United States in 1982 A geographic region is divided up into cells (10 – 20 KM across) An IMTS system 100 km across can have only one call on each frequency An AMPS system might have 100 10-km cells in the same area and be able to have 10 to 15 calls on each frequency First Generation – 1G (Analog Voice) (Source: Tanenbaum & Wetherall, Computer Network (5th edition - Prentice Hall) OverView ❖How is 3G Better? ❖Several times higher data speed ❖Enhanced audio and video streaming ❖Videoconferencing support ❖Web and WAP browsing at higher speeds ❖IPTV (TV through the Internet) support 29 Feature 30 Feature •Minimum data rate of Mbit/s for stationary or walking users, and 384 kbit/s in a moving vehicle •3G phones commonly have two cameras since the technology allows the user to have video calls, for which a userfacing camera is required for capturing him/her •Unlike with WiFi which you can get for free in hotspots 31 Applications of 3G 32 Applications of 3G Global Positioning System (GPS) Locationbased services Mobile TV Telemedicine Video Conferencing Video on demand 33 4G 4thgeneration What is 4G? 34 WiMAX Worldwide Interoperability for Microwave Access IEEE 802.16 http://en.wikipedia.org/wiki/WiMAX 35 LTE LongTerm Evolution http://en.wikipedia.org/wiki/LTE_(telecommunication) 36 Teliabranded Samsung LTE modem http://en.wikipedia.org/wiki/LTE_(telecommunication) 37 Click to edit Master text styles Adoption of LTE technology as of May 21, 2014 Countries and regions with commercial LTE service Countries and regions with commercial LTE network deployment ongoing or planned Countries and regions with LTE trial systems (precommitment) None 38 39 3G vs 4G http://www.nokia.com/gben/4g/ 40 4G in Vietnam? 41 Panorama of Council meeting to assess the subject KC.01.17 / 1115 Website of Ministry of Science and Technology http://www.most.gov.vn/Desktop.aspx/Chitietbaiviet/Tintonghop/Trien_khai_mang_thong_tin_di_dong_LTE4G_tai_Viet_Nam/ 42 Reference ● [1] Andrew S Tanenbaum, David J Wetherall (2010) Computer Networks, Prentice Hall, 5th edition ● [2] Website: http://en.wikipedia.org/wiki/Advanced_Mobile_Phone_System (18-08-2014) ● [3] Website: http://en.wikipedia.org/wiki/3G(21-08-2014) ● [4] Website: http://en.wikipedia.org/wiki/WiMAX (21-08-2014) ● [5] Website: http://en.wikipedia.org/wiki/LTE_(telecommunication) ● [6] Website: http://en.wikipedia.org/wiki/History_of_mobile_phones (15-08-2014) ● [7] Website: http://www.diffen.com/difference/CDMA_vs_GSM (15-08-2014) 43 ... (4G): 3G + Mobile ultra-broadband Internet access Mobile Phone System ●Used for wide area voice and data communication ●Sometimes called cellphones ●Has generations: 1G, 2G, 3G ? ?Mobile phones should... in US vs Europe o o o Several systems vs only one system Mixed phone number Prepaid mobile phone in Europe First Generation – 1G (Analog Voice) ● Mobile radio telephones (maritime and military)... Call management o Receiving a call   All idle phones continuously listen to the paging channel When a call is placed to a mobile phone (fixed /mobile phone) packet is sent to the callee’s home MSC