Multiplexing: Performance Measures and Engineering Issues

Hongwei Zhang

http://www.cs.wayne.edu/~hzhang

Acknowledgement: this lecture is partially based on the slides of Dr. D. Manjunath, Dr. Anurag Kumar

Outline

� Network performance and source characterization

� Stream session in packet networks

� Circuit-switched networks

� Elastic transfer in packet networks

� Packet multiplexing over wireless networks

Outline

� Network performance and source characterization

� Stream session in packet networks

� Circuit-switched networks

� Elastic transfer in packet networks

� Packet multiplexing over wireless networks

Two alternatives

Packet network: a schematic view

Two types of traffic

History

For calculating Call blocking probability

History (contd.)

Outline

� Network performance and source characterization

� Stream session in packet networks

� Circuit-switched networks

� Elastic transfer in packet networks

� Packet multiplexing over wireless networks

Stream sessions in a packet network: delay guarantees

� Voice all as an example of a stream session

Network delay, delay jitter, & playout delay

Voice call and delay (contd.)

voice activity detection

QoS objective (i.e., voice quality)

Chapter 4

Chapter 5

Outline

� Network performance and source characterization

� Stream session in packet networks

� Circuit-switched networks

� Elastic transfer in packet networks

� Packet multiplexing over wireless networks

Circuit-multiplexed networks

Design issues

Chapter 6Portion of traffic that cannot be

accommodated on the first-choice route

Outline

� Network performance and source characterization

� Stream session in packet networks

� Circuit-switched networks

� Elastic transfer in packet networks

� Packet multiplexing over wireless networks

Elastic transfers in a packet network: feedback control

Congestion control, feedback, bandwidth sharing

Chapter 7

Outline

� Network performance and source characterization

� Stream session in packet networks

� Circuit-switched networks

� Elastic transfer in packet networks

� Packet multiplexing over wireless networks

Packet multiplexing over wireless networks

Modified view of networking over wireless

Chapter 8