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Wireless Multimedia Delivery over 3G Networks Greg Leah C SC 461.

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Presentation on theme: "Wireless Multimedia Delivery over 3G Networks Greg Leah C SC 461."— Presentation transcript:

1 Wireless Multimedia Delivery over 3G Networks Greg Leah C SC 461

2 3G third generation wireless services offers high data rate content delivery to mobile devices  cellphones  PDA’s enables multimedia applications such as:  live TV  video/audio streaming  video conferencing  web surfing

3 Cellular Technologies all are different methods of sharing a radio channel all have concept of multiple access – implies sharing available frequency range with multiple users

4 Frequency Division Multiple Access (FDMA) frequency is divided between users each user is allocated a different carrier frequency of the radio spectrum

5 Time Division Multiple Access (TDMA) users share the same frequency by using alternating time slots

6 Code Division Multiple Access (CDMA) data is broken into uniquely identified packets and transmitted over multiple frequencies uses unique codes to identify connections and reassemble messages every user uses the entire spectrum all of the time allows most efficient usage of frequency spectrum

7 Wireless Services History 1G  offered analog voice only  uses Frequency Division Multiple Access (FDMA)  offered data rates of approximately 9600 bps

8 Wireless Services History 2G  digital voice and digital data digital data applications: text messaging, streaming audio, & electronic publishing  implemented circuit switching technology  uses TDMA (Time Division Multiple Access) and CDMA (Code Division Multiple Access)  peak data rate: 14.4 kbps

9 Wireless Services History migration from 2G to 2.5G to assist carriers with upgrading infrastructure transition to 3G 2.5G  voice and data transmission  enhanced data rates and packet data services  adopted packet-switching technology  peak data rate: 115 kbps

10 Wireless Services History 3G  combination of circuit and packet switching technologies  high data rates in addition to voice transmission  able to achieve data rates between 307 kbps to 2.4 Mbps

11 3G Technology Wideband Code Division Multiple Access (W-CDMA) Code Division Multiple Access 2000 (CDMA2000) Time Division-Synchronous Code Division Multiple Access (TD-SCDMA)

12 Wideband Code Division Multiple Access (W-CDMA) leading global 3G standard 2 sub standards based on CDMA technology:  Freedom of Mobile Multimedia Access (FOMA) world’s first commercial W-CDMA service developed in Japan by NTT DoCoMo  Universal Mobile Telephone System (UMTS) mainly used in countries that use GSM (Europe)

13 CDMA2000 second generation of CDMA digital cellular technology outgrowth of 2G CDMA, but still backwards compatible substandards:  CDMA2000 1x, CDMA2000 1xEV-DO, and CDMA2000 1xEV- DV EV-DO → Evolution-Data-Only EV-DV → Evolution-Data-Voice main 3G technology used in Canada and the United States

14 Time Division-Synchronous Code Division Multiple Access (TD-SCDMA ) uses a combination of TDMA and CDMA developed and used in China only in an attempt to develop home-grown technology and not be "dependent on Western technology" for 3G services

15 Main Challenges developing reliable protocols to ensure high data rate transmission to mobile devices developing protocols for pervasive networks to allow handoff between heterogeneous network types

16 Implementation content providers all over the world have been rolling out 3G networks for a couple years now in Canada:  Bell and Telus introduced 3G services in late 2005  Rogers started offering live TV through MobiTV in April 2005

17 3G Handsets worldwide drive to implement 3G networks is creating demand for more sophisticated handsets

18 Panasonic 3G Handset

19 Nokia 3G Handset

20 Motorola’s Vodaphone 3G Handsets

21 The Future: 4G Japanese company NTT DoCoMo is testing 4G communication at 100 Mbps while moving, and 1 Gbps while stationary plans to roll out in 2010 will be based strictly on packet-switched technology only while 3G is a combination of packet- and circuit-switching

22 The Future: 4G pervasive networks hypothetical concept where users can be handed off using heterogeneous wireless technologies  e.g. cellphone uses WiFi or WiMax when available, then hands off to UMTS or another cellular technology

23 Why I think 3G is cool video delivery to cellphones is a huge market  projections in multiple billions of dollars mobile video conferencing is also a cool technology

24 The End questions?

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