Introduction to Multimedia Networking (2)

1. Advanced Multimedia Introduction to Multimedia Networking (2) • University of Palestine • Eng. Wisam Zaqoot • October 2010 Ref: Multimedia Networking From Theory to Practice

2. Telematics and Infotainment • Telematics is the integrated use of telecommunications and informatics for sending, receiving, and storing information via telecommunication devices. • More and more internet access technologies are installed in vehicles, like General Packet Radio Service (GPRS) and 3G mobile access.

3. Telematics and Infotainment

4. Telematics and Infotainment • Internet access in vehicles: • front-seat information and entertainment (infotainment): navigation, traffic status, hand-free communication, location-aware services, etc. • back-seat infotainment: multimedia entertainment and gaming, Internet browsing, email access, etc.

5. Telematics and Infotainment

6. Major components of multimedia networking • Multimedia is defined as information content that combines and interacts with multiple forms of media data, e.g., text, speech, audio, image, video, graphics, animation, and possibly various formats of documents.

7. The 4 major components of multimedia networking • The 4 most critical components when studying multimedia networking systems are: • Data Compression (Source Encoding) • Quality of Service (QoS) streaming architecture design issues for MM delivery over best-effort IP nets • Effective dissemination MM over heterogeneous IP wireless broadband networks. • Digital rights management

8. 1. Multimedia, the need for compression • Large amount of multimedia data is being transmitted through Internet protocol (IP) networks. even with today’s broadband communication ability, the bandwidth is still not enough to accommodate the transmission of uncompressed data.

9. 1. Multimedia, the need for compression

10. For different end terminals to be able to decode a compressed bitstream, international standards for these data compression schemes have to be introduced for interoperability. • Once the data are compressed, the bitstreams will be packetized and sent over the Internet, which is a public, best-effort, wide area network

12. 2.Quality of Service • Quality of Service (QoS) issues include packet delay, packet loss, jitter, etc. • These issues can be dealt with either from the network infrastructure or from an application level.

13. 3. Dissemination over wireless networks • Wireless networks have been deployed widely in many countries as the most popular last-mile Internet access technology. • While mobile computing devices such as PDAs, smart phones, and laptops have been improved dramatically.

14. 3. Dissemination over wireless networks • The main challenges here result from the integration of wired and wireless heterogeneous networking systems. • In wireless, the QoS is further degraded by the dynamically changing end-to-end available bandwidth caused by the wireless fading or shadowing and link adaptation.

15. 3. Dissemination over wireless networks • In addition, the increased occurrence of wireless radio transmission errors also results in a higher rate of packet loss than for wired IP networks. • To overcome all these extra deficiencies due to wireless networks, several additional QoS mechanisms, spanning from physical, media access control (MAC), network and application layers, have to be incorporated.

16. 4. Digital rights management