Introduction to Introduction to Multimedia Multimedia

Networking (2)Networking (2)

Advanced MultimediaAdvanced Multimedia

University of PalestineUniversity of Palestine Eng. Wisam ZaqootEng. Wisam Zaqoot October 2010October 2010

Ref: Multimedia Networking From Theory to Practice

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.

Telematics and Infotainment

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.

Telematics and Infotainment

Major components of Major components of multimedia networkingmultimedia 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.

The 4 major components of The 4 major components of multimedia networkingmultimedia networking

The 4 most critical components when The 4 most critical components when studying multimedia networking systems studying multimedia networking systems are:are:

1)1) Data Compression (Source Encoding)Data Compression (Source Encoding)

2)2) Quality of Service (QoS) streaming architecture Quality of Service (QoS) streaming architecture design issues for MM delivery over best-effort design issues for MM delivery over best-effort IP netsIP nets

3)3) Effective dissemination MM over heterogeneous Effective dissemination MM over heterogeneous IP wireless broadband networks.IP wireless broadband networks.

4)4) Digital rights managementDigital rights management

1. Multimedia, the need for 1. Multimedia, the need for compressioncompression

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.

11 . .Multimedia, the need for Multimedia, the need for compressioncompression

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

22.Quality of Service.Quality of Service

Quality of Service (QoS) issues 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.

3. Dissemination over 3. Dissemination over wireless networkswireless 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.

3. Dissemination over 3. Dissemination over wireless networkswireless 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.

33 . .Dissemination over Dissemination over wireless networkswireless 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.

44 . .Digital rights Digital rights managementmanagement