Post on 17-Jan-2016
description
Multimedia Research Viewpoint and vision
Sid AhujaVP Converged Networks and Services Research
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What is Multimedia?
• Not just another medium (media type)?– Audio, video, data, ..– Aggregation of two or more different medium?
• Integration of multiple medium in common applications– Multimedia mail (includes voice, data and images)
• Real time experience in multiple media around a common event (people centric.. Not machine centric)
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Real Time Multimedia Experience
• Daughter’s Birthday Party– Screaming kids everywhere (rich interactive multipoint audio)– Colorful and messed up clothes (rich multipoint video)– Kisses and hugs (rich tactile feedback)– Getting hit by an errant pie (VERY rich tactile feedback)
• Going on a Space Mountain ride at Disney– The world rushing by (high speed audio, video)– Hanging on to dear life on a huge drop (g-forces)– Losing your hat on the third turn (air whizzing by )
• These are IMMERSIVE experiences – Being hit at the same time in many different ‘senses’– Produces a feeling of ‘being there’
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Multimedia in Entertainment
• Multimedia Presentations (multimedia content)– DVD Movies .. Limited to big production houses– Business presentations (data + A/V clips)
• Multimedia mail – Audio and Video attachments to email– MMS .. Multimedia messaging in wireless– Video clips on the Internet
• Asynchrounous use of Multimedia content
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Networked Multimedia
• Real time multimedia collaboration (why are we not using it?)– Systems being built since late 80’s .. No common standards– Confusion about the experience (document sharing, Video
conferencing)– Lack of common signaling and bandwidth
• Multimedia Books /classrooms– No standard today – Mostly one-to-many videocast of a lecture– Can be truly interactive (from each user’s point of view)
• Interactive Video Games– Shared mulitmedia experience– Virtual video, audio and other media (tactile feedback)– Networked video games .. No shared audio, local video– No tools for the consumer
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Challenges .. Vision
• Billions of sources (every person a consumer and producer)– Cheap devices for capture and interface– Tools for representation, storage and movement– Network for movement– Already happened to the Text world
• Trillions of experiences– Representation and indexing
» Not just one kind of video … any set of pixels ..any rate» New media types .. Tactile, temperature, etc.
– Content identification and ownership» Encryption» Watermarking
– Easy sharing with multiple people» Multicasting » Group communication support
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Push-to-view (Always-On)New Applications
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User’s rich video world
User has a ‘personalized’ selection of low-bitrate, Always–On, interactive video channels
The Always-On video channels can be sourced from:• Entertainment broadcast stations• Roving reporters .. e.g. an embedded reporter in Iraq• Monitoring sources: traffic intersection, kid’s room, factory floor,etc.• Instantaneous person to person video connection (like Push-to-talk to
limited set) • Personal Video mailbox
Video channels are MPEG4 .. based• Quick set-up is required for providing Video channels from millions of
sources• Network infrastructure required to manage totality of Video sources • Bandwidth per user can be from 64 Kbits/sec to 1 Mbits/sec based on
quality and number of Always-On channels.
New Applications
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VideoPhone Architecture Overview
• Current Cell Performance – For Voice only cells:
» ~180 Simultaneous users at 13.3 kbps, ~2.4 Mbps per cell
» Occupancy: to be 90 seconds per call (1.2 Mbits / call)– For Data only cells:
» ~30 Simultaneous users at 100Kbps, ~ 9 Mbps per cell
» Occupancy: unknown at this time
Video Portal
MSC
RTP/UDP/IPISUP (H.324)
3G-324mVideophone
RNC
Node B
Video Content server
Live Contents
Satellite dish
MSC
RTP/UDP/IPISUP (H.324)
3G-324mVideophone
RNC
Node B
Video Content server
Live Contents
Satellite dish
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Service ProviderIP Network
XMLPortals,
Messaging,Other App Server
EnterpriseLAN
SIPH.323
SS7
UniversalGateway
PSTN
Softswitch
VoDSLIAD
DSLAM
IPDC/H.248
SIPH.323MGCP
Parlay, SIP
LMRS
IP PBX
SIPH.323
Circuit PBX
PRI
IMT/PRI
Wireless
FTTPONT
Splitter
RNC
XM/C
Access Independent Subscriber Services
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Anytime Anywhere Group Communication across the Network of Networks: Connection Example
2.5G / 3G Wireless Network
MMSC
2G Wireless Network
SMSC
2G User
2.5/3 G User
PSTNPSTN PSTN user accessible
through Voice
Data NetworksData Networks
Internet, Corporate, Home etc.Internet, Corporate, Home etc.
Offline / Busy user,
accessible through email
Network Assistant Network Enabled
User reachability to an ad-hoc
groupAd-hoc group
Time, Place, Notes
Enable group
member communicat
ion
SMS
MMS, Voice, Video
Voice CallE-mail
Multi-modal communicatio
n
Online User accessible
through Voice / Video /
Messaging
New Applications
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New Research Directions
• Rich definition and representation of mulitmedia content• Identification and copying• Tools for masses for creating and sharing content• Next generation network infrastructure
– New signaling infrastructure (SIP+)– Enough capacity for end points– New group support– QOS for real time– Persistence .. How to save for posterity
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SIGMM .. Take the Lead
• Wireless world …3GPP / 3GPP2• Wireline world .. W3C , IETF, TV Industry• Multimedia Books …standardize content• Tools for the masses• Facilitate multimedia forums• Hold next retreat as a virtual retreat