Chapter 7 Multimedia Networking

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Chapter 7 Multimedia Networking"

Transcription

1 Chapter 7 Multimedia Networking Principles Classify multimedia applications Identify the network services and the requirements 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 Computer Networking: A Top Down Approach Featuring the Internet, 3 rd edition. Jim Kurose, Keith Ross Addison-Wesley, July Sistemi e Servizi Multimediali Multimedia Networking - 1 Current Scenario Explosive growth of audio and video applications IP telephony, radio on Internet, video streaming on-demand, video conference, interactive games, virtual worlds, e-learning Different requirements than traditional applications ( , Web, remote login, file sharing) delay sensitive loss tolerant Antithesis of data, which are loss intolerant but delay tolerant Need for protocols and architectures for QoS Sistemi e Servizi Multimediali Multimedia Networking - 2

2 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. Sistemi e Servizi Multimediali Multimedia Networking - 3 MM Networking Applications Classes of MM applications: 1) Streaming stored audio and video 2) Streaming live audio and video 3) Real-time interactive audio and video NOT download-and-play apps Fundamental characteristics: Typically delay sensitive end-to-end delay delay jitter But loss tolerant: infrequent losses cause minor glitches Jitter is the variability of packet delays within the same packet stream Sistemi e Servizi Multimediali Multimedia Networking - 4

3 Cumulative data Streaming Stored Multimedia Streaming: media stored at source transmitted to client streaming: client playout begins before all data has arrived timing constraint for still-to-be transmitted data: in time for playout timing constraints not as strong as in the case of real-time interactive apps Sistemi e Servizi Multimediali Multimedia Networking - 5 Streaming Stored Multimedia: What is it? 1. video recorded 2. video sent network delay 3. video received, played out at client time streaming: at this time, client playing out early part of video, while server still sending later part of video Sistemi e Servizi Multimediali Multimedia Networking - 6

4 Streaming Stored Multimedia: Interactivity VCR-like functionality: client can pause, rewind, FF, push slider bar 10 sec initial delay OK 1-2 sec until command effect OK RTSP often used (more later) Commercial products RealPlayer of RealNetworks QuickTime of Apple Windows Media of Microsoft Sistemi e Servizi Multimediali Multimedia Networking - 7 Streaming Live Multimedia Similar to traditional radio and TV, but on the Internet Examples: Internet radio talk show Live sporting event Interactivity fast forward impossible rewind, pause possible! Streaming playback buffer playback can lag tens of seconds after transmission still have timing constraint (10 s.) Sistemi e Servizi Multimediali Multimedia Networking - 8

5 Interactive, Real-Time Multimedia allow people to communicate in real time applications: IP telephony, video conference, distributed interactive worlds end-end delay requirements: audio: < 150 msec good, < 400 msec OK includes application-level (packetization) and network delays higher delays noticeable, impair interactivity Sistemi e Servizi Multimediali Multimedia Networking - 9 Interactive Real-Time Audio Telephony over Internet: for the end-user perspective similar to traditional telephony Born before 1990 (before Web!) PC-telephone applications popular at the end of 90 NetPhone and Dialpad provide low cost PC-telephone services Telephone-Internet-Telephone apps allow to call with traditional phones at very low cost American phone cards Skype, Microsoft Instant Messenger provide PC-PC and PC-telephone Sistemi e Servizi Multimediali Multimedia Networking - 10

6 Multimedia Over Today s Internet TCP/UDP/IP: best-effort service no guarantees on delay, loss?????? But you said multimedia apps requires QoS and level of performance to be?? effective!??? Today s Internet multimedia applications use application-level techniques to mitigate (as best possible) effects of delay, loss Sistemi e Servizi Multimediali Multimedia Networking - 11 How should the Internet evolve to better support multimedia? Integrated services philosophy: Fundamental changes in Internet so that apps can reserve end-to-end bandwidth Requires new, complex software in hosts & routers Laissez-faire no major changes more bandwidth when needed content distribution networks application-layer multicast (!=multicast IP) Differentiated services philosophy: Fewer changes to Internet infrastructure, yet provide 1st and 2nd class service. Protocol to reserve bandwidth Registration policy at routers Description of future traffic for apps and monitoring Bandwidth provisioning Sistemi e Servizi Multimediali Multimedia Networking - 12

7 A few words about audio compression Analog signal sampled at constant rate telephone: 8,000 samples/sec CD music: 44,100 samples/sec Each sample quantized, i.e., rounded e.g., 2 8 =256 possible quantized values Each quantized value represented by bits 8 bits for 256 values PCM Pulse Code Modulation Example: 8,000 samples/sec, 256 quantized values --> 64,000 bps Receiver converts it back to analog signal: some quality reduction Example rates CD: samples/sec, 16 bits Mbps (stereo) Compression techniques MP3 (stereo): 96, 128, 160 kbps Internet telephony: kbps (GSM) Sistemi e Servizi Multimediali Multimedia Networking - 13 A few words about video compression Video is sequence of images displayed at constant rate e.g. 24 images/sec Digital image (not compressed) is an array of pixels Each pixel represented by bits Redundancy spatial temporal Examples: MPEG 1 (CD-ROM) 1.5 Mbps MPEG2 (DVD) 3-6 Mbps MPEG4 (often used in Internet, < 1 Mbps) Research: Layered (scalable) video adapt layers to available bandwidth Sistemi e Servizi Multimediali Multimedia Networking - 14

8 Streaming Stored Multimedia Major consumer available bandwith Increasing trend for many reasons Low costs for storage (terabyte) Improvement of Internet infrastructure (connection, delivery techniques, QoS protocols) Potential growth of requests for high quality video streaming on demand: TV and Web on demand Sistemi e Servizi Multimediali Multimedia Networking - 15 Streaming Stored Multimedia Application-level streaming techniques for making the best out of best-effort service: client side buffering use of UDP versus TCP multiple encodings of multimedia Current Web browser rely on helper applications: Media Player (e. g., RealPlayer, Media Player) Media Player decompression jitter removal error concealment (loss) graphical user interface w/ controls for interactivity Sistemi e Servizi Multimediali Multimedia Networking - 16

9 Internet multimedia: simplest approach HTTP (TCP) audio or video stored in file video often divided in two files two HTTP requests files transferred as HTTP object received in entirety at client then passed to player (header HTTP) audio, video not streamed: no, pipelining, long delays until playout! Sistemi e Servizi Multimediali Multimedia Networking - 17 Internet multimedia: streaming approach But TCP and HTTP browser GETs metafile with info (URL, ) browser launches player, passing metafile player contacts server server streams audio/video to player Sistemi e Servizi Multimediali Multimedia Networking - 18

10 Streaming from a streaming server This architecture allows for non-http protocol between server and media player Can also use UDP instead of TCP. Different options for communication between streaming server and media player (equal rate or client buffer) Sistemi e Servizi Multimediali Multimedia Networking - 19 Streaming Multimedia: Client Buffering Cumulative data constant bit rate video transmission variable network delay client video reception buffered video constant bit rate video playout at client client playout delay time Client-side buffering, playout delay compensate for network-added delay, delay jitter Sistemi e Servizi Multimediali Multimedia Networking - 20

11 Streaming Multimedia: Client Buffering variable fill rate, x(t) constant drain rate, d buffered video Client-side buffering, playout delay compensate for network-added delay, delay jitter Sistemi e Servizi Multimediali Multimedia Networking - 21 Streaming Multimedia: UDP or TCP? UDP server sends at rate appropriate for client (oblivious to network congestion!) often send rate = encoding rate = constant rate then, fill rate = constant rate - packet loss short playout delay (2-5 seconds) to compensate for network delay jitter error recover: time permitting TCP send at maximum possible rate under TCP fill rate fluctuates due to TCP congestion control larger playout delay: smooth TCP delivery rate superior quality of audio/video HTTP/TCP passes more easily through firewalls Sistemi e Servizi Multimediali Multimedia Networking - 22

12 Streaming Multimedia: client rate(s) 1.5 Mbps encoding 28.8 Kbps encoding Q: how to handle different client receive rate capabilities? 28.8 Kbps dialup 100Mbps Ethernet A: server stores, transmits multiple copies of video, encoded at different rates Sistemi e Servizi Multimediali Multimedia Networking - 23 User Control of Streaming Media: RTSP (Real-Time Streaming Protocol) HTTP Does not target multimedia content No commands for fast forward, etc. RTSP: RFC 2326 Client-server application layer protocol. For user to control display: rewind, fast forward, pause, resume, repositioning, etc What it doesn t do: does not define how audio/video is compressed does not define how audio/video is encapsulated for streaming over network does not restrict how streamed media is transported; it can be transported over UDP or TCP does not specify how the media player buffers audio/video Sistemi e Servizi Multimediali Multimedia Networking - 24

13 RTSP: out of band protocol FTP uses an out-of-band control channel: A file is transferred over one TCP connection. Control information (directory changes, file deletion, file renaming, etc.) is sent over a separate TCP connection. The out-of-band and inband channels use different port numbers. RTSP messages are also sent out-of-band: RTSP control messages use different port numbers than the media stream: out-of-band. Port 554 The media stream is considered in-band. Sistemi e Servizi Multimediali Multimedia Networking - 25 RTSP Example Scenario: metafile communicated to web browser browser launches player player sets up an RTSP control connection, data connection to streaming server Sistemi e Servizi Multimediali Multimedia Networking - 26

14 RTSP Operation Sistemi e Servizi Multimediali Multimedia Networking - 27 Metafile Example <title>twister</title> <session> <group language=en lipsync> <switch> <track type=audio e="pcmu/8000/1" Synchronization Choice between two audio streams src = "rtsp://audio.example.com/twister/audio.en/lofi"> <track type=audio e="dvi4/16000/2" pt="90 DVI4/8000/1" src="rtsp://audio.example.com/twister/audio.en/hifi"> </switch> <track type="video/jpeg" src="rtsp://video.example.com/twister/video"> </group> </session> Sistemi e Servizi Multimediali Multimedia Networking - 28

15 RTSP Exchange Example C: SETUP rtsp://audio.example.com/twister/audio RTSP/1.0 Cseq: 1 Transport: rtp/udp; compression; port=3056; mode=play S: RTSP/ OK Cseq: 1 Session: 4231 C: PLAY rtsp://audio.example.com/twister/audio.en/lofi RTSP/1.0 Session: 4231 Cseq: 2 Range: npt=0- C: PAUSE rtsp://audio.example.com/twister/audio.en/lofi RTSP/1.0 Session: 4231 Cseq: 3 Range: npt=37 C: TEARDOWN rtsp://audio.example.com/twister/audio.en/lofi RTSP/1.0 Session: 4231; Cseq: 4 S: RTSP/ OK Session: 4231; Cseq: 4 Sistemi e Servizi Multimediali Multimedia Networking - 29

Multimedia Networking

Multimedia Networking Multimedia Networking 1 Multimedia, Quality of Service (QoS): What is it? Multimedia applications: Network audio and video ( continuous media ) QoS Network provides application with level of performance

More information

Outline. QoS routing in ad-hoc networks. Real-time traffic support. Classification of QoS approaches. QoS design choices

Outline. QoS routing in ad-hoc networks. Real-time traffic support. Classification of QoS approaches. QoS design choices Outline QoS routing in ad-hoc networks QoS in ad-hoc networks Classifiction of QoS approaches Instantiation in IEEE 802.11 The MAC protocol (recap) DCF, PCF and QoS support IEEE 802.11e: EDCF, HCF Streaming

More information

CS640: Introduction to Computer Networks. Application Classes. Application Classes (more) 11/20/2007

CS640: Introduction to Computer Networks. Application Classes. Application Classes (more) 11/20/2007 CS640: Introduction to Computer Networks Aditya Akella Lecture 21 - Multimedia Networking Application Classes Typically sensitive to delay, but can tolerate packet loss (would cause minor glitches that

More information

Tema 0: Transmisión de Datos Multimedia

Tema 0: Transmisión de Datos Multimedia Tema 0: Transmisión de Datos Multimedia Clases de aplicaciones multimedia Redes basadas en IP y QoS Computer Networking: A Top Down Approach Featuring the Internet, 3 rd edition. Jim Kurose, Keith Ross

More information

The Transport Layer: User Datagram Protocol

The Transport Layer: User Datagram Protocol The Transport Layer: User Datagram Protocol CS7025: Network Technologies and Server Side Programming http://www.scss.tcd.ie/~luzs/t/cs7025/ Lecturer: Saturnino Luz April 4, 2011 The UDP All applications

More information

Lecture 9: Media over IP

Lecture 9: Media over IP Lecture 9: Media over IP These slides are adapted from the slides provided by the authors of the book (to the right), available from the publisher s website. Computer Networking: A Top Down Approach 5

More information

Video Streaming and Media Session Protocols

Video Streaming and Media Session Protocols Video Streaming and Media Session Protocols 1 Streaming Stored Multimedia Stored media streaming File containing digitized audio / video Stored at source Transmitted to client Streaming Client playout

More information

Multimedia in the Internet

Multimedia in the Internet Protocols for multimedia in the Internet Andrea Bianco Telecommunication Network Group firstname.lastname@polito.it http://www.telematica.polito.it/ > 4 4 3 < 2 Applications and protocol stack DNS Telnet

More information

Chapter 7 Multimedia Networking

Chapter 7 Multimedia Networking Chapter 7 Multimedia Networking A note on the use of these ppt slides: We re making these slides freely available to all (faculty, students, readers). They re in PowerPoint form so you can add, modify,

More information

Week-12 (Multimedia Networking)

Week-12 (Multimedia Networking) Computer Networks and Applications COMP 3331/COMP 9331 Week-12 (Multimedia Networking) 1 Multimedia: audio analog audio signal sampled at constant rate telephone: 8,000 samples/sec CD music: 44,100 samples/sec

More information

Multimedia Networking

Multimedia Networking Multimedia Networking Raj Jain Washington University in Saint Louis Saint Louis, MO 63130 Jain@wustl.edu Audio/Video recordings of this lecture are available on-line at: http://www.cse.wustl.edu/~jain/cse473-09/

More information

Chapter 7 Multimedia Networking

Chapter 7 Multimedia Networking Chapter 7 Multimedia Networking Computer Networking: A Top Down Approach Featuring the Internet, 3 rd edition. Jim Kurose, Keith Ross Addison-Wesley, July 2004. 7: Multimedia Networking 7-1 Multimedia,

More information

Internet Video Delivery. Professor Hui Zhang

Internet Video Delivery. Professor Hui Zhang 18-345 Internet Video Delivery Professor Hui Zhang 1 1990 2004: 1 st Generation Commercial PC/Packet Video Technologies Simple video playback, no support for rich app Not well integrated with Web browser

More information

Data Communications & Networks. Session 10 Main Theme Multimedia Networking. Dr. Jean-Claude Franchitti

Data Communications & Networks. Session 10 Main Theme Multimedia Networking. Dr. Jean-Claude Franchitti Data Communications & Networks Session 10 Main Theme Multimedia Networking Dr. Jean-Claude Franchitti New York University Computer Science Department Courant Institute of Mathematical Sciences Adapted

More information

Chapter 7 Multimedia Networking

Chapter 7 Multimedia Networking Chapter 7 Multimedia Networking A note on the use of these ppt slides: We re making these slides freely available to all (faculty, students, readers). They re in PowerPoint form so you can add, modify,

More information

Application Layer Protocols

Application Layer Protocols SC250 Computer Networking I Application Layer Protocols Prof. Matthias Grossglauser School of Computer and Communication Sciences EPFL http://lcawww.epfl.ch 1 Today's Objectives Conceptual, implementation

More information

Multimedia Networking

Multimedia Networking CMPT765/408 08-1 Multimedia Networking 1 Overview Multimedia Networking The note is mainly based on Chapter 7, Computer Networking, A Top-Down Approach Featuring the Internet (4th edition), by J.F. Kurose

More information

Multimedia Networking

Multimedia Networking Multimedia Networking #2 Multimedia Networking Semester Ganjil 2012 PTIIK Universitas Brawijaya #2 Multimedia Applications 1 Schedule of Class Meeting 1. Introduction 2. Applications of MN 3. Requirements

More information

Multimedia networking: outline

Multimedia networking: outline Computer Network Architectures and Multimedia Guy Leduc Chapter 4 Multimedia Applications & Transport Sections 9.1 to 9.4 from Computer Networking: A Top Down Approach, 7 th edition. Jim Kurose, Keith

More information

CSC 401 Data and Computer Communications Networks

CSC 401 Data and Computer Communications Networks CSC 401 Data and Computer Communications Networks Application Layer Video Streaming, CDN and Sockets Sec 2.6 2.7 Prof. Lina Battestilli Fall 2017 Outline Application Layer (ch 2) 2.1 principles of network

More information

Quality of Service (QoS)

Quality of Service (QoS) Quality of Service (QoS) A note on the use of these ppt slides: We re making these slides freely available to all (faculty, students, readers). They re in PowerPoint form so you can add, modify, and delete

More information

Mul$media Streaming. Digital Audio and Video Data. Digital Audio Sampling the analog signal. Challenges for Media Streaming.

Mul$media Streaming. Digital Audio and Video Data. Digital Audio Sampling the analog signal. Challenges for Media Streaming. Mul$media Streaming Digital Audio and Video Data Jennifer Rexford COS 461: Computer Networks Lectures: MW 10-10:50am in Architecture N101 hhp://www.cs.princeton.edu/courses/archive/spr12/cos461/ 2 Challenges

More information

What Transport Services Does an App Need? Network Service Model. Multimedia Apps Quality of Service. Transport Service Requirements of Common Apps

What Transport Services Does an App Need? Network Service Model. Multimedia Apps Quality of Service. Transport Service Requirements of Common Apps Network Service Model What potential service model an application may ask from the channel transporting packets from sender to receiver? Example services for individual packets: guaranteed delivery guaranteed

More information

Multimedia Systems Multimedia Networking Part I Mahdi Amiri December 2015 Sharif University of Technology

Multimedia Systems Multimedia Networking Part I Mahdi Amiri December 2015 Sharif University of Technology Course Presentation Multimedia Systems Multimedia Networking Part I Mahdi Amiri December 2015 Sharif University of Technology Multimedia Networking Motivation The ever-growing needs for various multimedia

More information

of-service Support on the Internet

of-service Support on the Internet Quality-of of-service Support on the Internet Dept. of Computer Science, University of Rochester 2008-11-24 CSC 257/457 - Fall 2008 1 Quality of Service Support Some Internet applications (i.e. multimedia)

More information

CS519: Computer Networks. Lecture 9: May 03, 2004 Media over Internet

CS519: Computer Networks. Lecture 9: May 03, 2004 Media over Internet : Computer Networks Lecture 9: May 03, 2004 Media over Internet Media over the Internet Media = Voice and Video Key characteristic of media: Realtime Which we ve chosen to define in terms of playback,

More information

Chapter 5 Link Layer. Computer Networking: A Top Down Approach. 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012

Chapter 5 Link Layer. Computer Networking: A Top Down Approach. 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 Chapter 5 Link Layer Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 Slides adopted from original ones provided by the textbook authors. Link layer,

More information

Multimedia Networking. Network Support for Multimedia Applications

Multimedia Networking. Network Support for Multimedia Applications Multimedia Networking Network Support for Multimedia Applications Protocols for Real Time Interactive Applications Differentiated Services (DiffServ) Per Connection Quality of Services Guarantees (IntServ)

More information

The Gullibility of Human Senses

The Gullibility of Human Senses The Gullibility of Human Senses Three simple tricks for producing LBSC 690: Week 9 Multimedia Jimmy Lin College of Information Studies University of Maryland Monday, April 2, 2007 Images Video Audio But

More information

Ch 4: Multimedia. Fig.4.1 Internet Audio/Video

Ch 4: Multimedia. Fig.4.1 Internet Audio/Video Ch 4: Multimedia Recent advances in technology have changed our use of audio and video. In the past, we listened to an audio broadcast through a radio and watched a video program broadcast through a TV.

More information

Chapter 2: Application Layer. Chapter 2 Application Layer. Some network apps. Application architectures. Chapter 2: Application layer

Chapter 2: Application Layer. Chapter 2 Application Layer. Some network apps. Application architectures. Chapter 2: Application layer Chapter 2 Application Layer Computer Networking: A Top Down Approach, 5 th edition. Jim Kurose, Keith Ross Addison-Wesley, April 2009. Chapter 2: Application Layer Our goals: conceptual, implementation

More information

Real-Time Control Protocol (RTCP)

Real-Time Control Protocol (RTCP) Real-Time Control Protocol (RTCP) works in conjunction with RTP each participant in RTP session periodically sends RTCP control packets to all other participants each RTCP packet contains sender and/or

More information

Protocol Layers, Security Sec: Application Layer: Sec 2.1 Prof Lina Battestilli Fall 2017

Protocol Layers, Security Sec: Application Layer: Sec 2.1 Prof Lina Battestilli Fall 2017 CSC 401 Data and Computer Communications Networks Protocol Layers, Security Sec:1.5-1.6 Application Layer: Sec 2.1 Prof Lina Battestilli Fall 2017 Outline Computer Networks and the Internet (Ch 1) 1.1

More information

Steady stream of bits 9/6/2014 5:02:53 PM. Edward Jackson

Steady stream of bits 9/6/2014 5:02:53 PM. Edward Jackson DB1 As noted in this unit's reading, there are three main categories of streaming video systems. Name the three categories, give a brief comparison of the categories, then state (and support) your own

More information

Multimedia Networking. Protocols for Real-Time Interactive Applications

Multimedia Networking. Protocols for Real-Time Interactive Applications Multimedia Networking Protocols for Real-Time Interactive Applications Real Time Protocol Real Time Control Protocol Session Initiation Protocol H.323 Real-Time Protocol (RTP) RTP is companion protocol

More information

Audio and video compression

Audio and video compression Audio and video compression 4.1 introduction Unlike text and images, both audio and most video signals are continuously varying analog signals. Compression algorithms associated with digitized audio and

More information

Streaming Technologies Delivering Multimedia into the Future. May 2014

Streaming Technologies Delivering Multimedia into the Future. May 2014 Streaming Technologies Delivering Multimedia into the Future May 2014 TABLE OF CONTENTS Abstract... 3 Abbreviations... 4 How it started?... 6 Technology Overview... 7 Streaming Challenges... 15 Solutions...

More information

CMPE 150/L : Introduction to Computer Networks. Chen Qian Computer Engineering UCSC Baskin Engineering Lecture 4

CMPE 150/L : Introduction to Computer Networks. Chen Qian Computer Engineering UCSC Baskin Engineering Lecture 4 CMPE 150/L : Introduction to Computer Networks Chen Qian Computer Engineering UCSC Baskin Engineering Lecture 4 1 Lab schedule confirmation Mondays, 12:00-2:00pm Tuesdays, 11:00am-1:00pm Wednesdays, 4:00-6:00pm

More information

Multimedia Networking

Multimedia Networking Multimedia Networking Adapted from slides of: J.F Kurose and K.W. Ross (copyright 1996-2006), Shivkumar Kalyanaraman, Henning Schulzrinne, Doug Moeller, Francesco Santini Multimedia, Quality of Service:

More information

Multimedia networked applications: standards, protocols and research trends

Multimedia networked applications: standards, protocols and research trends Multimedia networked applications: standards, protocols and research trends Maria Teresa Andrade FEUP / INESC Porto mandrade@fe.up.pt ; maria.andrade@inescporto.pt http://www.fe.up.pt/~mandrade/ ; http://www.inescporto.pt

More information

Using RTSP with Firewalls, Proxies, and Other Intermediary Network Devices

Using RTSP with Firewalls, Proxies, and Other Intermediary Network Devices Using with Firewalls, Proxies, and Other Intermediary Network Devices Version 2.0/rev.2 Introduction This white paper provides information to developers and implementers about the incorporation of Real

More information

Basics (cont.) Characteristics of data communication technologies OSI-Model

Basics (cont.) Characteristics of data communication technologies OSI-Model 48 Basics (cont.) Characteristics of data communication technologies OSI-Model Topologies Packet switching / Circuit switching Medium Access Control (MAC) mechanisms Coding Quality of Service (QoS) 49

More information

OSI Transport Layer. Network Fundamentals Chapter 4. Version Cisco Systems, Inc. All rights reserved. Cisco Public 1

OSI Transport Layer. Network Fundamentals Chapter 4. Version Cisco Systems, Inc. All rights reserved. Cisco Public 1 OSI Transport Layer Network Fundamentals Chapter 4 Version 4.0 1 Transport Layer Role and Services Transport layer is responsible for overall end-to-end transfer of application data 2 Transport Layer Role

More information

QoE Characterization for Video-On-Demand Services in 4G WiMAX Networks

QoE Characterization for Video-On-Demand Services in 4G WiMAX Networks QoE Characterization for Video-On-Demand Services in 4G WiMAX Networks Amitabha Ghosh IBM India Research Laboratory Department of Electrical Engineering University of Southern California, Los Angeles http://anrg.usc.edu/~amitabhg

More information

Data Networks. Lecture 1: Introduction. September 4, 2008

Data Networks. Lecture 1: Introduction. September 4, 2008 Data Networks Lecture 1: Introduction September 4, 2008 Slide 1 Learning Objectives Fundamental aspects of network Design and Analysis: Architecture: layering, topology design, switching mechanisms Protocols:

More information

HW3 and Quiz. P14, P24, P26, P27, P28, P31, P37, P43, P46, P55, due at 3:00pm with both soft and hard copies, 11/11/2013 (Monday) TCP), 20 mins

HW3 and Quiz. P14, P24, P26, P27, P28, P31, P37, P43, P46, P55, due at 3:00pm with both soft and hard copies, 11/11/2013 (Monday) TCP), 20 mins HW3 and Quiz v HW3 (Chapter 3): R1, R2, R5, R6, R7, R8, R15, P14, P24, P26, P27, P28, P31, P37, P43, P46, P55, due at 3:00pm with both soft and hard copies, 11/11/2013 (Monday) v Quiz: 10/30/2013, Wednesday,

More information

Chapter 4. Computer Networking: A Top Down Approach 5 th edition. Jim Kurose, Keith Ross Addison-Wesley, sl April 2009.

Chapter 4. Computer Networking: A Top Down Approach 5 th edition. Jim Kurose, Keith Ross Addison-Wesley, sl April 2009. Chapter 4 Network Layer A note on the use of these ppt slides: We re making these slides freely available to all (faculty, students, readers). They re in PowerPoint form so you can add, modify, and delete

More information

Chapter 2 Application Layer

Chapter 2 Application Layer Chapter 2 Application Layer Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 Application Layer 2-1 Some network apps e-mail web text messaging remote

More information

OpenVideo Streaming API RTSP Connection Methods

OpenVideo Streaming API RTSP Connection Methods OpenVideo Streaming API RTSP Connection Methods July 26, 2016 Page 1 of 13 Table of Contents 1. Introduction... 3 1.1. Overview...3 1.2. Purpose...3 1.3. Intended Audience...3 1.4. Definitions, Acronyms,

More information

A closer look at network structure:

A closer look at network structure: T1: Introduction 1.1 What is computer network? Examples of computer network The Internet Network structure: edge and core 1.2 Why computer networks 1.3 The way networks work 1.4 Performance metrics: Delay,

More information

The Diffie-Hellman Key Exchange

The Diffie-Hellman Key Exchange ISC: SECURITY AND QOS The Diffie-Hellman Key Exchange A mechanism to establish secret keys without the need for CAs Based on the difficulty of computing discrete logarithms of large numbers Public (or

More information

Introduction to computer networking

Introduction to computer networking edge core Introduction to computer networking Comp Sci 3600 Security Outline edge core 1 2 edge 3 core 4 5 6 The edge core Outline edge core 1 2 edge 3 core 4 5 6 edge core Billions of connected computing

More information

Prof. Dr. Abdulmotaleb El Saddik. site.uottawa.ca mcrlab.uottawa.ca

Prof. Dr. Abdulmotaleb El Saddik. site.uottawa.ca mcrlab.uottawa.ca Multimedia Communications Multimedia Technologies & Applications Prof. Dr. Abdulmotaleb El Saddik Multimedia Communications Research Laboratory School of Information Technology and Engineering University

More information

Application Layer Chapter 7

Application Layer Chapter 7 Application Layer Chapter 7 DNS Domain Name System Electronic Mail The Web Streaming Audio and Video Content Delivery Revised: August 2011 and February 2018 The Application Layer Uses transport services

More information

Client/Server Computing & Socket Programming

Client/Server Computing & Socket Programming CPSC 852 Intering Client/Server Computing & Socket Programming Michele Weigle Department of Computer Science Clemson University mweigle@cs.clemson.edu http://www.cs.clemson.edu/~mweigle/courses/cpsc852

More information

Key Network-Layer Functions

Key Network-Layer Functions Network Layer: Routing & Forwarding Instructor: Anirban Mahanti Office: ICT 745 Email: mahanti@cpsc.ucalgary.ca Class Location: ICT 121 Lectures: MWF 12:00 12:50 hours Notes derived from Computer Networking:

More information

RTP. Prof. C. Noronha RTP. Real-Time Transport Protocol RFC 1889

RTP. Prof. C. Noronha RTP. Real-Time Transport Protocol RFC 1889 RTP Real-Time Transport Protocol RFC 1889 1 What is RTP? Primary objective: stream continuous media over a best-effort packet-switched network in an interoperable way. Protocol requirements: Payload Type

More information

Cobalt Digital Inc Galen Drive Champaign, IL USA

Cobalt Digital Inc Galen Drive Champaign, IL USA Cobalt Digital White Paper IP Video Transport Protocols Knowing What To Use When and Why Cobalt Digital Inc. 2506 Galen Drive Champaign, IL 61821 USA 1-217-344-1243 www.cobaltdigital.com support@cobaltdigital.com

More information

How to achieve low latency audio/video streaming over IP network?

How to achieve low latency audio/video streaming over IP network? February 2018 How to achieve low latency audio/video streaming over IP network? Jean-Marie Cloquet, Video Division Director, Silex Inside Gregory Baudet, Marketing Manager, Silex Inside Standard audio

More information

Announcements. TAs office hours: Mohamed Grissa: Mohamed Alkalbani:

Announcements. TAs office hours: Mohamed Grissa: Mohamed Alkalbani: Announcements TAs office hours: Mohamed Grissa: grissam@oregonstate.edu Tuesday: 4-5 Friday: 11-12 Mohamed Alkalbani: alkalbmo@oregonstate.edu Wednesday: 11-12 Thursday: 11-12 Lecture slides: Will be posted

More information

OR /2017-E. White Paper KARL STORZ OR1 FUSION IP. Unified Communication and Virtual Meeting Rooms WHITE PAPER

OR /2017-E. White Paper KARL STORZ OR1 FUSION IP. Unified Communication and Virtual Meeting Rooms WHITE PAPER OR1 32 1.0 11/2017-E White Paper KARL STORZ OR1 FUSION IP Unified Communication and Virtual Meeting Rooms WHITE PAPER Contents 1 Description KARL STORZ OR1 FUSION... 3 2 Microsoft Skype for Business (SfB)...

More information

Adaptive Video Acceleration. White Paper. 1 P a g e

Adaptive Video Acceleration. White Paper. 1 P a g e Adaptive Video Acceleration White Paper 1 P a g e Version 1.0 Veronique Phan Dir. Technical Sales July 16 th 2014 2 P a g e 1. Preface Giraffic is the enabler of Next Generation Internet TV broadcast technology

More information

Streaming Video and Throughput Uplink and Downlink

Streaming Video and Throughput Uplink and Downlink Streaming Video and Throughput Uplink and Downlink IPTV IPTV - Digital TV delivered using technologies used for computer network. Internet Protocols (HTTP, RTP, RTSP, IGMP) Copyright 2017 Cambium Networks,

More information

Part 5: Link Layer Technologies. CSE 3461: Introduction to Computer Networking Reading: Chapter 5, Kurose and Ross

Part 5: Link Layer Technologies. CSE 3461: Introduction to Computer Networking Reading: Chapter 5, Kurose and Ross Part 5: Link Layer Technologies CSE 3461: Introduction to Computer Networking Reading: Chapter 5, Kurose and Ross 1 Outline PPP ATM X.25 Frame Relay 2 Point to Point Data Link Control One sender, one receiver,

More information

CSE 461 Quality of Service. David Wetherall

CSE 461 Quality of Service. David Wetherall CSE 461 Quality of Service David Wetherall djw@cs.washington.edu QOS Focus: How to provide better than best effort Fair queueing Application Application needs Transport Traffic shaping Guarantees IntServ

More information

Topic 4a Router Operation and Scheduling. Ch4: Network Layer: The Data Plane. Computer Networking: A Top Down Approach

Topic 4a Router Operation and Scheduling. Ch4: Network Layer: The Data Plane. Computer Networking: A Top Down Approach Topic 4a Router Operation and Scheduling Ch4: Network Layer: The Data Plane Computer Networking: A Top Down Approach 7 th edition Jim Kurose, Keith Ross Pearson/Addison Wesley April 2016 4-1 Chapter 4:

More information

1. What is a Computer Network? interconnected collection of autonomous computers connected by a communication technology

1. What is a Computer Network? interconnected collection of autonomous computers connected by a communication technology Review Questions for exam Preparation (22-07-2017) 1. What is a Computer Network? interconnected collection of autonomous computers connected by a communication technology 2. What is the Internet? "network

More information

Content Streaming for Mobile Environments

Content Streaming for Mobile Environments Content Streaming for Mobile Environments Mahbub Hassan and Salil Kanhere School of Computer Science and Engineering The University of New South Wales, Sydney, Australia {mahbub, salilk} @cse.unsw.edu.au

More information

Chapter 3 Transport Layer

Chapter 3 Transport Layer Chapter 3 Transport Layer Lec 8: Transport Layer Service Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 All material copyright 1996-2012 J.F Kurose

More information

Foundations of Telematics

Foundations of Telematics Foundations of Telematics Chapter 2 Application Layer Principles of network applications Important application protocols Using sockets Acknowledgement: These slides have been prepared by J.F. Kurose and

More information

Course on Computer Communication and Networks. Lecture 1 Chapter 1: Introduction Part A: Internet, Protocol Layering and Data

Course on Computer Communication and Networks. Lecture 1 Chapter 1: Introduction Part A: Internet, Protocol Layering and Data Course on Computer Communication and Networks Lecture 1 Chapter 1: Introduction Part A: Internet, Protocol Layering and Data CTH EDA344/ GU DIT 420 Based on the book Computer Networking: A Top Down Approach,

More information

Adaptive Playout Buffering for H.323 Voice over IP Applications

Adaptive Playout Buffering for H.323 Voice over IP Applications Adaptive Playout Buffering for H.323 Voice over IP Applications M. Narbutt and L. Murphy Department of Computer Science University College Dublin Belfield, Dublin 4 Abstract In this paper we investigate

More information

RECOMMENDATION ITU-R BT.1720 *

RECOMMENDATION ITU-R BT.1720 * Rec. ITU-R BT.1720 1 RECOMMENDATION ITU-R BT.1720 * Quality of service ranking and measurement methods for digital video broadcasting services delivered over broadband Internet protocol networks (Question

More information

UNDERSTANDING MUSIC & VIDEO FORMATS

UNDERSTANDING MUSIC & VIDEO FORMATS ComputerFixed.co.uk Page: 1 Email: info@computerfixed.co.uk UNDERSTANDING MUSIC & VIDEO FORMATS Are you confused with all the different music and video formats available? Do you know the difference between

More information

Topic 4b: QoS Principles. Chapter 9 Multimedia Networking. Computer Networking: A Top Down Approach

Topic 4b: QoS Principles. Chapter 9 Multimedia Networking. Computer Networking: A Top Down Approach Topic 4b: QoS Principles Chapter 9 Computer Networking: A Top Down Approach 7 th edition Jim Kurose, Keith Ross Pearson/Addison Wesley April 2016 9-1 Providing multiple classes of service thus far: making

More information

CS457 Transport Protocols. CS 457 Fall 2014

CS457 Transport Protocols. CS 457 Fall 2014 CS457 Transport Protocols CS 457 Fall 2014 Topics Principles underlying transport-layer services Demultiplexing Detecting corruption Reliable delivery Flow control Transport-layer protocols User Datagram

More information

Chapter 4 Network Layer: The Data Plane. Part A. Computer Networking: A Top Down Approach

Chapter 4 Network Layer: The Data Plane. Part A. Computer Networking: A Top Down Approach Chapter 4 Network Layer: The Data Plane Part A All material copyright 996-06 J.F Kurose and K.W. Ross, All Rights Reserved Computer Networking: A Top Down Approach 7 th Edition, Global Edition Jim Kurose,

More information

Computer Networking Introduction

Computer Networking Introduction Computer Networking Introduction Halgurd S. Maghdid Software Engineering Department Koya University-Koya, Kurdistan-Iraq Lecture No.1 Chapter 1 Introduction Text Book for this course Computer Networking:

More information

COMP 249 Advanced Distributed Systems Multimedia Networking. Multimedia Applications & User Requirements

COMP 249 Advanced Distributed Systems Multimedia Networking. Multimedia Applications & User Requirements COMP 249 Advanced Distributed Systems Multimedia Networking Multimedia Applications & User Requirements Kevin Jeffay Department of Computer Science University of North Carolina at Chapel Hill jeffay@cs.unc.edu

More information

CS 204: Advanced Computer Networks

CS 204: Advanced Computer Networks CS 204: Advanced Computer Networks Jiasi Chen Lectures: MWF 12:10-1pm Humanities and Social Sciences 1403 http://www.cs.ucr.edu/~jiasi/teaching/cs204_spring17/ 1 Why Networks? Supports the applications

More information

Quality of Service (QoS)

Quality of Service (QoS) CEN445 Network Protocols and Algorithms Chapter 5 Network Layer 5.4 Quality of Service Dr. Mostafa Hassan Dahshan Department of Computer Engineering College of Computer and Information Sciences King Saud

More information

CS519: Computer Networks. Lecture 1 (part 2): Jan 28, 2004 Intro to Computer Networking

CS519: Computer Networks. Lecture 1 (part 2): Jan 28, 2004 Intro to Computer Networking : Computer Networks Lecture 1 (part 2): Jan 28, 2004 Intro to Computer Networking Remember this picture? How did the switch know to forward some packets to B and some to D? From the address in the packet

More information

Guaranteeing Video Quality

Guaranteeing Video Quality Guaranteeing Video Quality in IP Delivery Systems By Göran Appelquist, Ph.D., Chief Technology Officer, Edgeware AB This article explores some of the challenges and solutions for operators to guarantee

More information

Institute of Computer Technology - Vienna University of Technology. L73 - IP QoS Integrated Services Model. Integrated Services Model

Institute of Computer Technology - Vienna University of Technology. L73 - IP QoS Integrated Services Model. Integrated Services Model Integrated Services Model IP QoS IntServ Integrated Services Model Resource Reservation Protocol (RSVP) Agenda Integrated Services Principles Resource Reservation Protocol RSVP Message Formats RSVP in

More information

Data Communications and Networks Spring Syllabus and Reading Assignments

Data Communications and Networks Spring Syllabus and Reading Assignments Data Communications and Networks Spring 2018 Syllabus and Assignments Revision Date: January 24, 2018 Course : This course teaches the design and implementation techniques essential for engineering robust

More information

CSCE 463/612 Networks and Distributed Processing Spring 2018

CSCE 463/612 Networks and Distributed Processing Spring 2018 CSCE 463/612 Networks and Distributed Processing Spring 2018 Introduction Dmitri Loguinov Texas A&M University January 23, 2018 Original slides copyright 1996-2004 J.F Kurose and K.W. Ross 1 Updates Recv

More information

CSC 401 Data and Computer Communications Networks

CSC 401 Data and Computer Communications Networks CSC 401 Data and Computer Communications Networks Computer Networks and The Inter Sec 1.3 Prof. Lina Battestilli Fall 2017 Outline Computer Networks and the Inter (Ch 1) 1.1 What is the Inter? 1.2 work

More information

Theoretical and Practical Aspects of Triple Play

Theoretical and Practical Aspects of Triple Play Theoretical and Practical Aspects of Triple Play 1. Introduction 2. Network and Protocol Architecture for Triple Play 3. Characteristics and Parameters of Triple Play 4. Main QoS and QoE Methods and Standards

More information

CS 4390 Computer Networks. Transport Services and Protocols

CS 4390 Computer Networks. Transport Services and Protocols CS 4390 Computer Networks UT D data Session 07 Transport Layer Overview and UDP Adapted from Computer Networking a Top-Down Approach 1996-2012 by J.F Kurose and K.W. Ross, All Rights Reserved Transport

More information

Chapter 20: Multimedia Systems. Operating System Concepts 8 th Edition,

Chapter 20: Multimedia Systems. Operating System Concepts 8 th Edition, Chapter 20: Multimedia Systems, Silberschatz, Galvin and Gagne 2009 Chapter 20: Multimedia Systems What is Multimedia? Compression Requirements of Multimedia Kernels CPU Scheduling Disk Scheduling Network

More information

Chapter 2: Application layer

Chapter 2: Application layer Chapter 2 Application Layer A note on the use of these ppt slides: Were making these slides freely available to all (faculty, students, readers). Theyre in PowerPoint form so you can add, modify, and delete

More information

PESIT Bangalore South Campus

PESIT Bangalore South Campus PESIT Bangalore South Campus 15CS52: Computer Networks Faculty: Dr. Sarasvathi V, Ms. Bidisha Goswami and Ms. Kanthimathi No. Of Sessions: 70 Course objectives: This course will enable students to Demonstration

More information

CMPE 80N: Introduction to Networking and the Internet

CMPE 80N: Introduction to Networking and the Internet CMPE 80N: Introduction to Networking and the Internet Katia Obraczka Computer Engineering UCSC Baskin Engineering Lecture 11 CMPE 80N Fall'10 1 Announcements Forum #2 due on 11.05. CMPE 80N Fall'10 2 Last

More information

ECPE / COMP 177 Fall Some slides from Kurose and Ross, Computer Networking, 5 th Edition

ECPE / COMP 177 Fall Some slides from Kurose and Ross, Computer Networking, 5 th Edition ECPE / COMP 177 Fall 2014 Some slides from Kurose and Ross, Computer Networking, 5 th Edition Instructor: Dr. Jeff Shafer Email: jshafer at pacific dot edu Office: Anderson 205 Office hours (posted on

More information

Configure Video and Audio Settings

Configure Video and Audio Settings 14 CHAPTER Revised: November 24, 2010 Concepts, page 14-1 s, page 14-3 Reference, page 14-6 Concepts Performance Factors, page 14-1 Guidelines, page 14-2 Workflows, page 14-3 Performance Factors Understand

More information

RSC Part I: Introduction

RSC Part I: Introduction RSC Part I: Introduction Redes y Servicios de Comunicaciones Universidad Carlos III de Madrid These slides are, mainly, part of the companion slides to the book Computer Networking: A Top Down Approach

More information

Internet Services & Protocols. Quality of Service Architecture

Internet Services & Protocols. Quality of Service Architecture Department of Computer Science Institute for System Architecture, Chair for Computer Networks Internet Services & Protocols Quality of Service Architecture Dr.-Ing. Stephan Groß Room: INF 3099 E-Mail:

More information

COMP 562: Advanced Topics in Networking

COMP 562: Advanced Topics in Networking COMP 562: Advanced Topics in Networking Qian Zhang Spring 2009 HKUST Introduction 1-1 Course Info Instructor: Qian Zhang www.cs.ust.hk/~qianzh Course web site http://www.cs.ust.hk/~qianzh/comp562 2009/comp562

More information

Multimedia Systems Multimedia Networking Part II Mahdi Amiri December 2015 Sharif University of Technology

Multimedia Systems Multimedia Networking Part II Mahdi Amiri December 2015 Sharif University of Technology Course Presentation Multimedia Systems Multimedia Networking Part II Mahdi Amiri December 2015 Sharif University of Technology Multimedia Networking, QoS Multimedia Over Today s Internet TCP/UDP/IP: best-effort

More information

VoIP. ALLPPT.com _ Free PowerPoint Templates, Diagrams and Charts

VoIP. ALLPPT.com _ Free PowerPoint Templates, Diagrams and Charts VoIP ALLPPT.com _ Free PowerPoint Templates, Diagrams and Charts VoIP System Gatekeeper: A gatekeeper is useful for handling VoIP call connections includes managing terminals, gateways and MCU's (multipoint

More information