Chapter 6 Multimedia Networking Computer Networking: A Top Down Approach Featuring the Internet The power point slides are based on the material 2nd edition rovided by Jim Kurose. Keith ross Jf Kurose and K.W. ross Addison-Wesley, July 2002
Chapter 6 Multimedia Networking Computer Networking: A Top Down Approach Featuring the Internet, 2 nd edition. Jim Kurose, Keith Ross Addison-Wesley, July 2002. The PowerPoint Slides are based on the material provided by J.F Kurose and K.W. Ross
Multimedia, Quality of service: What is it? Multimedia applications network audio and video Continuous media") Qos network provides application with level of performance needed for application to function
Multimedia, Quality of Service: What is it? Multimedia applications: network audio and video (“continuous media”) network provides application with level of performance needed for application to function. QoS
Chapter 6: Goals Principles o Classify multimedia applications o Identify the network services the apps need o Making the best of best effort service o Mechanisms for providing Qos Protocols and Architectures O Specific protocols for best-effort 口 Architectures for Qos
Chapter 6: Goals Principles Classify multimedia applications Identify the network services the apps need Making the best of best effort service Mechanisms for providing QoS Protocols and Architectures Specific protocols for best-effort Architectures for QoS
Chapter 6 outline 口6.1Mu| timedia 0 6.5 beyond Best effort Networking Applications o 6.6 Scheduling and 口6.25 reaming stored Policing Mechanisms audio and video 0 6.7 Integrated Services O RTSP 06. 8 RSVP 06.3 Real-time g6.9 Differentiated Multimedia: Internet Services Phone case study 口64 Protocols for real- Time Interactive Applications O RTPRTCP SIP
Chapter 6 outline 6.1 Multimedia Networking Applications 6.2 Streaming stored audio and video RTSP 6.3 Real-time Multimedia: Internet Phone Case Study 6.4 Protocols for RealTime Interactive Applications RTP,RTCP SIP 6.5 Beyond Best Effort 6.6 Scheduling and Policing Mechanisms 6.7 Integrated Services 6.8 RSVP 6.9 Differentiated Services
MM Networking applications Classes of m applications: Fundamental Streaming stored audio characteristics: and video ypically delay sensitive 2) streaming live audio and o end-to-end delay video delay jitter 3) Real-time interactive But loss tolerant audio and video infrequent losses cause minor glitches 口 Antithesis of data which are loss intolerant Jitter is the variability but delay tolerant of packet delays within the same packet stream
MM Networking Applications Fundamental characteristics: Typically delay sensitive end-to-end delay delay jitter But loss tolerant: infrequent losses cause minor glitches Antithesis of data, which are loss intolerant but delay tolerant. Classes of MM applications: 1) Streaming stored audio and video 2) Streaming live audio and video 3) Real-time interactive audio and video Jitter is the variability of packet delays within the same packet stream