文档介绍：Chapter 7 working
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working: A Top Down Approach Featuring the , 3rd edition. Jim Kurose, Keith Ross Addison-Wesley, July 2004.
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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
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Chapter 7: Goals
Principles
Classify multimedia applications
Identify work 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
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Chapter 7 outline
working Applications
Streaming stored audio and video
Real-time Multimedia: Phone study
Protocols for Real-Time Interactive Applications
RTP,RTCP,SIP
Distributing Multimedia: content works
Beyond Best Effort
Scheduling and Policing Mechanisms
Integrated Services and Differentiated Services
RSVP
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working Applications
Fundamental characteristics:
Typically delay sensitive
end-to-end delay
delay jitter
But loss tolerant: infrequent losses cause minor glitches
Antithesis of data, which ar