07. TrafficControl

07. TrafficControl - Traffic Control 1 Overview Traffic...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Traffic Control
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
EL536: Principles of Communication Networks © Kang Xi, Polytechnic University 2 Overview s Traffic demand > available resource b Potential congestion s Avoidance: before congestion b Provide more resource in advance b Reject certain requests b Operations in case of heavy load s Resolution: in case of congestion b Ask sources to decrease TX rate (implicit/explicit) b Prioritized QoS b Rerouting
Background image of page 2
EL536: Principles of Communication Networks © Kang Xi, Polytechnic University 3 Network Congestion
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
EL536: Principles of Communication Networks © Kang Xi, Polytechnic University 4 Call Admission Control (CAC) s Do not accept a new connection unless the network has sufficient capacity b QoS of the new connection is satisfied b Existing connections are not jeopardized s Functions at the time of call setup s Difficulties: b Utilization vs. QoS guarantee b Hard to define resource requirement
Background image of page 4
EL536: Principles of Communication Networks © Kang Xi, Polytechnic University 5 Multiplexing s Deterministic multiplexing s Statistical multiplexing
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
EL536: Principles of Communication Networks © Kang Xi, Polytechnic University 6 Deterministic Multiplexing s The traditional means of bandwidth allocation in telecommunications networks s Each traffic type has an inherent bit rate (e.g., voice traffic = 64 kilobits per second) s Allocate precisely that bandwidth for each call, for the duration of the call
Background image of page 6
EL536: Principles of Communication Networks
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/02/2010 for the course EE 136 taught by Professor Kang xi during the Spring '10 term at NYU Poly.

Page1 / 25

07. TrafficControl - Traffic Control 1 Overview Traffic...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online