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3 rd Generation WCDMA / UMTS Wireless Network

3 rd Generation WCDMA / UMTS Wireless Network. WHAT IS W-CDMA. Wideband code division multiple access (W–CDMA) is a CDMA channel that is four times wider than the current channels that are typically used in 2G network’s in North America. 1G: analog 2G : 1st digital mobile telephony

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3 rd Generation WCDMA / UMTS Wireless Network

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  1. 3rd Generation WCDMA / UMTSWireless Network

  2. WHAT IS W-CDMA • Wideband code division multiple access (W–CDMA) is a CDMA channel that is four times wider than the current channels that are typically used in 2G network’s in North America.

  3. 1G: analog 2G : 1st digital mobile telephony 2.5G: transition from 2G to 3G 3G standard: IMT 2000 Route to 3G

  4. THE EXPECTED GROWTH OF 3 G IN INDIA India is seeing an unprecedented increase in the mobile users. According of one of the latest TRAI reports released in November 2008, the total number of mobile users in India has reached 325 million. In October 2008 alone, 10.42 million new subscribers added. These figures are bound to shoot up with the launch of 3G network.

  5. 3G: Overview • International Mobile Telecommunications-2000 • 850, 900, 1800, 1900, 2100 MHz bands • Introduces packet-switching (sharing) • Increased security • Typical speeds • 300Kbps - 1.4Mbps download • 100Kbps - 800Kbps upload • Streaming multimedia

  6. W-cdma features Combines a mobile phone, laptop PC and TV Features includes:- Phone calls/fax- Global roaming- Send/receive large email messages- High-speed WebNavigation/mapsVideoconferencing- TV streaming- Electronic agenda meeting reminder. Speed: 144kb/sec-2mb/sec Time to download a 3min MP3 song: 11sec-1.5min

  7. Evolution Paths cdmaOne IS-95B cdmaOne IS-95A Cdma2000 1X Cdma2000 1xEV-DO TDMA Cdma2000 1xEV-DV IS-41 Core Network EDGE WCDMA GSM GPRS GSM Map Core Network 2G 2.5G 3G

  8. STANDARDS USED IN THE 3G MOBILES ARE FOLLOWING • W-CDMA also known as UMTS • CDMA2000 • TD-CDMA / TD-SCDMA • UWC (often implemented with EDGE) • DECT

  9. CDMA analogy A room full of people speaking to each other. Methods to distinguish conversations:     Speaking one at a time: TDMA     Speaking in different pitches: FDMA     Speaking in different languages: CDMA

  10. UMTS • Developed by 3rd Generation Partnership Projects • Describes a network topology • Builds on GSM • Adds additional functionality • Complex network structure • 3 physical layer (air interface) protocols • W-CDMA • TD-CDMA • TD-SCDMA

  11. Standardization of WCDMA / UMTS WCDMA Air Interface, Main Parameters

  12. W-CDMA Overview • Initially developed by NTT DoCoMo in the late 1990's as the 3G air interface for their FOMA network • Later added to the IMT-2000 family of standards  • Chosen for UMTS • Most widely used UMTS air interface • High service flexibility • Variable data rates • Connections can use multiple channels • Used as basis for HSPA family of protocols

  13. W-CDMA Technical • Uses the 1920-1980, 2110-2170 MHz frequency range • 'W' stands for wide band- 5MHz wide channels •  Full duplex • Frequency Division Duplexing (FDD)  • Time Division Duplexing (TDD) • Uses CDMA protocol • Originally was capable of speeds of 2 Mbps • With HSPA, rates of 14.4 Mbps have been achieved • HSPA+ yields peak rates of 58 Mbps

  14. 3G TD-SCDMA • In china, more than 8 millions GSM subscribers were added in just 1 month. • china’s desire to craft its own wireless vision. • Chinese CATT and Siemens jointly submitted IMT-2000 3G standard based on Time Division Synchronous Code Division Multiple Access • Relies on existing GSM infrastructure • 1.6 MHz channel and smart antennas to yield more spectral efficiency. • 5 ms frames divided into 7 slots allocated to single data only user or several slow users • TD-SCDMA allows easy upgrade to GSM.

  15. High Speed Packet Access • HSPA is built on W-CDMA • Software construct- requires minimal base station upgrades • Provides much faster data rates 14.4 Mbps downlink and 5.8 Mbps uplink • System capacity increased 5x for downlink and 2x for uplink • Stands for 2 different protocols • HSDPA - downlink • HSUPA - uplink • HSPA+ • Evolved HSPA, 58 Mbps downlink 22 Mbps uplink • Utilized by the iPhone

  16. 3G Capabilities • Voice quality comparable to the public switched telephone network • 144 Kbps- user in high-speed motor vehicles • 384 Kbps- pedestrians standing or moving slowly over small areas • Up to 2 Mbps- fixed applications like office use • Symmetrical/asymmetrical data transmission rates • Support for both packet switched and circuit switched data services like Internet Protocol (IP) traffic and real time video

  17. SERVICE PROVIDERS OF 3G IN INDIA Some of the major mobile players in India are BSNL mobile, Airtel mobile, Reliance mobile and Tata mobile. At one time Aircel mobile was leading the market; however, it has now lost the market share to BSNL mobile, Airtel mobile and other leading mobile players.

  18. ADVANTAGES OF 3G TECHNOLOGY The Operations Utilizing the Technology Getting Info Faster Speed On Price

  19. Utilization • AT&T utilizes HSPA which yields speeds upwards of 14.4 Mbps • QUALCOMM companies utilize EV-DO which yields speeds of 3.1 Mbps

  20. Features of W-CDMA Key features of W-CDMA systems are a high degree of commonality of design worldwide, compatibility of services, use of small pocket terminals with worldwide roaming capability, Internet and other multimedia applications, and a wide range of services and terminals.

  21. 3G Multimedia Applications Features of 3G that make it well suited for multimedia: • Always on data transfer • Multiple directional  data transfer • IP datagrams • High data speeds

  22. Conclusion • Multimedia will continue to be more ubiquitous in mobile devices as time goes on • To keep up with the improving multimedia technologies, data rates and mobile devices will need to evolve with it • There will always be a desire for higher bandwidth • Market is constantly evolving, 4G is only the next step

  23. THANK’S

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