ITU/CoE WorkshopMuscat3 May 2004
IP Multimedia Subsystem (IMS)
Pushing New Services
Samer QablawiTechnical Solutions Consultant Siemens Middle East
ITU/CoE Workshop 12/07/2001 Page 2 © Siemens, 2004
IMS - What are we talking about ?
IMS is a standardized IP control Domain for new MM services
IMS has been standardized by 3GPP in R5 (June 2002)
IMS enables peer to peer multimedia communication over Packet Networks
It uses SIP the protocol of choice for IP-based service control
It provides MM call control completing GPRS and UMTS infrastructure
ITU/CoE Workshop 12/07/2001 Page 3 © Siemens, 2004
Why SIP is the Protocol of Choice for Multimedia Some SIP basics (Session Initiation Protocol)
SIP is standardised by IETF for VoIP and Multimedia
Succesor for ITUs H.323 (VoIP)
IP based Protocol (Sign. over UDP or TCP)
SIP is text based, very flexible and simple
Only 7 types of messages (methods)
Same session setup for all medias (different codecs)
SDP (session description protocol – capability negotiation)
Always included in SIP
Easy handling of different media streams (QoS)
3GPP defined extensions for IETF SIP
Optimized Reference Architecture
SIP Header Extensions
Better QoS, Security and Charging features
ITU/CoE Workshop 12/07/2001 Page 4 © Siemens, 2004
Comparison of IETF and 3GPP SIPTarget: The best of two worlds (IT and Telco)
IETF IETF defines lots of
protocols Internet paradigm Endpoint centric Security becomes more
important Charging is of minor
importance (flat rate)
3GPP Defines an architecture
which uses protocols Operator paradigm Core network centric Security is one of the most
important topics Charging is one of the most
important topics
IETF SIP 3GPP SIP
SIP Only a few 3GPP specific headers remain
Most of the SIPprotocol is generic
ITU/CoE Workshop 12/07/2001 Page 5 © Siemens, 2004
Status of IMS in 3GPP
3GPP Rel. 5 Specs were finished in 05/2002
Stage 1 & 2 standards: requirements and functional architecture, basic features
Enhanced features --> Rel’6
3GPP Rel. 6 Specs were finished in 09/2003
PSTN interworking: MGCF, MGW
WLAN access, Conferencing (MRF)
2002 2003 2004Rel 6Rel 5
Scheduling of 3GPP Releases
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Reduce OPEX and CAPEXIMS is an access-independent Service Delivery Platform
Enables Operators to have one homogeneous service platform for all packet based access networks (OPEX & CAPEX savings!)
Enables service interworking between different access technologies
IMS
UMTS
GPRS
WLAN
3G-SGSN
3G-GGSN
UTRAN
GPRSSGSN GGSN
IP
ISDN,PSTN,GSM
Internet
IP
APPLICATIONS
IMS
UMTS
GPRS
WLAN
3G-SGSN
3G-GGSN
UTRAN
GPRSSGSN GGSN
IPIP
ISDN,PSTN,GSM
Internet
IPIP
APPLICATIONS
ITU/CoE Workshop 12/07/2001 Page 7 © Siemens, 2004
IMS enables new Types and Mixes of ServicesAnd this is what Users expect
Non-realtime and near-realtime services Presence Instant Messaging Chat Push to Talk (PoC) Multimedia Messaging Enhanced CLI Push Services
Realtime services Video telephony “Rich” Voice (over IP) Multimedia Conferencing Video Audio/Streaming Broadcasting
IMS enables “new” types of services:IMS also enables the ability to bundle realtime and non-realtime services: Click to dial scenarios Presence-enabled Conferencing Mobile Gaming with Voice Presence and Location based Push Services Video streaming with integrated voice
And the Possibility of Combining:
ITU/CoE Workshop 12/07/2001 Page 8 © Siemens, 2004
IMS – Pushing New Services New multimedia services
Communication
Information
Entertainment Info Channel Information Sharing Interactive guidance Collaborative working
Photo Share Push-to-Flirt/-Show Person-to-Person Gaming Audio and Video Streaming
Push to talk over Cellular Instant Messaging Picture Chat Multimedia Conferencing
Multi-MediaMulti-UserMulti-Session
ITU/CoE Workshop 12/07/2001 Page 9 © Siemens, 2004
From “Voice & Data” to “Multimedia”Impact on Average Revenue per User (ARPU)
AR
PU, C
APE
X100 %
0 %
Voice
Data
Multimedia
New
cla
ss o
f ser
vice
s
Pure Voice ARPU is falling due to strong Competition Data ARPU is climbing constantly Multimedia ARPU will boost Mobile Revenues
ITU/CoE Workshop 12/07/2001 Page 10 © Siemens, 2004
IMS – Pushing New ServicesLifestyle users’ acceptance of mobile services
N=372
10 20 30 40 50 60 70 80 90 100
Interactive Gaming
Download
Browsing
Info Sharing
Video Telephony
% of respondents
Voice Conferencing
MMS
PoC
SMS
Voice Calls
Willingness to use different existing and coming services in the future
Classic Voice
Multimedia
Messaging
Infotainment
Push-to-Watch
monthly weekly daily
German-consumer-
Sou
rce:
Use
r Sur
vey,
Ger
man
y, M
ay 2
003
ITU/CoE Workshop 12/07/2001 Page 11 © Siemens, 2004
Operator BenefitsSurvey on willingness to pay
Source: User Survey, Germany, May 2003
Average total monthly bill: € 50
57% Voice
11% Push-to-Talk
5% Video Telephony
21% Messaging(MMS, SMS, IM…)
19% Multimedia
3% Browsing&Download
N=349average monthly bill “2005”
0%
20%
40%
60%
80%
100%
Average split of the monthly bill
Tomorrow (2005)Today
Average total monthly bill: €41,5
N=306
0%
20%
40%
60%
80%
100%
average monthly bill
Average split of the monthly bill
73% Voice
27% Data
Germany
Push to talk over Cellular (PoC)
ITU/CoE Workshop 12/07/2001 Page 13 © Siemens, 2004
IMS – Pushing New Services Push to talk over Mobile Networks
Innovative Voice over IP communication for mobile users… Select from buddy list with presence information Push one key to talk … … release key to listen (Walkie-Talkie) Group talk Global reach Available on mobile phone
…based on innovative technologies Usage of UMTS defined IP Multi media System Deployment already in GSM/GPRS networks Combination of mobile phone and network know-
how for the end-to-end solution
Solution Description
ITU/CoE Workshop 12/07/2001 Page 14 © Siemens, 2004
Push-to-Talk over Cellular: Step-by-Step Mona Lisa starts the PoC application 1
1. Starts Push-to-Talk over Cellular
Mona Lisa
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Push-to-Talk over Cellular: Step-by-StepMona Lisa selects her buddies 2
2. Selects A. Einstein & C. Columbus out of buddy list
Mona Lisa
ITU/CoE Workshop 12/07/2001 Page 16 © Siemens, 2004
Push-to-Talk over Cellular: Step-by-Step Mona Lisa invites for a PoC Session 3+4
3. Has invited for a PoC Session & Waiting for response
Mona Lisa
Receives Invitation
Albert Einstein C. Columbus
ReceivesInvitation
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Push-to-Talk over Cellular: Step-by-StepList of PoC Participants 5
Mona Lisa Albert Einstein C. Columbus
ITU/CoE Workshop 12/07/2001 Page 18 © Siemens, 2004
Push-to-Talk over Cellular: Step-by-Step Mona Lisa asks question to group 6
6. Pushes button and asks: “What are our plans for tonight?”
Mona Lisa C. ColumbusAlbert Einstein
ReceivesQuestion
“What are our plans for tonight?”
ReceivesQuestion
What are our plans for tonight?”
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Push-to-Talk over Cellular: Step-by-Step Albert Einstein answers 7
Mona Lisa C. Columbus
7. Pushes buttonand answers:‘I would like to go to the movie theater.’
Albert Einstein
ReceivesAnswer
ReceivesAnswer
‘I would like to go to the
movie theater.’
‘I would like to go to the
movie theater.’
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Push-to-Talk over Cellular: Step-by-Step Chris answers 8
Mona Lisa C. ColumbusAlbert Einstein
‘Good idea, I will be there
at 8 pm.’
7. Pushes button and answers: ‘Good idea, I will be there at 8 pm.’
ReceivesAnswer
ReceivesAnswer
‘Good idea, I will be there
at 8 pm.’
ITU/CoE Workshop 12/07/2001 Page 21 © Siemens, 2004
Push-to-Talk over Cellular: Step-by-Step Mona Lisa confirms and closes PoC session 9
3. Pushes button and talks: “OK! C U there! I’m out now.”
Mona Lisa C. ColumbusAlbert Einstein
ReceivesAnswer
ReceivesAnswer
“OK! C U there! I’m out now.”
“OK! C U there! I’m out now.”
ITU/CoE Workshop 12/07/2001 Page 22 © Siemens, 2004
Push-to-talk enables instantaneous half-duplex voice communications 1-to-many (voice message distribution) 1-to-1 (“walkie talkie” service; a special case of 1-to-many
model) Many-to-many (conferencing service)
Nextel’s success with Push-to-talk has lead to a market pressure in the U.S. Other operators now want to copy Nextel‘s business model.
IMS – Pushing New ServicesSummary of PoC
Picture Chat
ITU/CoE Workshop 12/07/2001 Page 24 © Siemens, 2004
IMS – Pushing New Services Short description of Picture Chat
Picture Chat allows subscribers to exchange short messages containing text, picture, clip artsor any combination of them
Picture Chat applicationcombines capabilities of IMS-based Presence and Chat and the Camera Function of your mobile device
Picture Chat applicationcan be used parallel to other applications(like game session)
ITU/CoE Workshop 12/07/2001 Page 25 © Siemens, 2004
Picture Chat: Step-by-StepStarting IMS (1)
1. Start IMS
Galileo
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Picture Chat: Step-by-StepSelection of Chat Partner (2)
1. Start IMS
2. Select Chat Partner
Galileo
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Picture Chat: Step-by-StepInvitation for a Chat (3)
1. Start IMS
2. Select Chat Partner
3. Invite Partner
1. Invitation
Galileo Mona Lisa
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Picture Chat: Step-by-StepChatting with Partner (4)
Galileo Mona Lisa
1. Start IMS
2. Select Chat Partner
3. Invite Partner
4. Chat with Partner
2. Chat with Partner
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Picture Chat: Step-by-StepStarting Reversi \\ Select Camera (5)
1. Start IMS
2. Select Chat Partner
3. Invite Partner
3. Activate Camera
4. Chat with Partner
5. Start Reversi
Galileo Mona Lisa
ITU/CoE Workshop 12/07/2001 Page 30 © Siemens, 2004
Picture Chat: Step-by-StepInvite Game Partner \\ Take Picture (6)
1. Start IMS
2. Select Chat Partner
3. Invite Chat Partner
4. Take Picture
4. Chat with Partner
5. Select Reversi
6. Invite Game Partner
Einstein
1. Invitation
photo
Galileo Mona Lisa
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Picture Chat: Step-by-StepPlay Game \\ Add Effects (7)
1. Start IMS
2. Select Chat Partner
3. Invite Chat Partner
5. Add text
4. Chat with Partner
5. Select Reversi
6. Invite Game Partner 2. Play Reversi
7. Play Reversi
Mona Lisa
Einstein
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Picture Chat: Step-by-StepPicture Chat \\ Play Game (8)
1. Start IMS
2. Select Chat Partner
3. Invite Chat Partner
6. List of pictures
4. Chat with Partner
5. Select Reversi
6. Invite Game Partner 3. Play Reversie
7. Play Reversi
8. Receive Picture & Play Reversi
Mona Lisa
Einstein
ITU/CoE Workshop 12/07/2001 Page 33 © Siemens, 2004
IMS – Pushing New Services Use cases of Picture Chat
Business Users
You are preparing a product presentation at your customers’ site.An important question is coming up…
There is a “chat forum” where those of your colleagues occupied with the product share their knowledge. Ask them! The answer comes immediatelyincluding a photo of your product …
Fast resolution of your problem, and your presentationwill be a success!
Consumers
Commuting to school.
Every morning you sit in the train on your way to school and
you use the time chatting with your friends
Your buddy Brian could not make it
through his maths homework.
You have a great idea:
You will just make a photo of your
results and pass it to him!
Sou
rce:
Sie
men
s IC
M N
M P
, Mar
ch 2
003
Other Use Cases of IMS
ITU/CoE Workshop 12/07/2001 Page 35 © Siemens, 2004
IMS – Pushing New Services Ideas of bundled PoC applications
Enhancement of Push to talk over Cellular by bundling with Presence / Location
> All contacts at a glance with one single Buddy-List > Information of the availability of the contacts/buddies including terminal capabilities & preferences, moods and locations
Chatting/ Messaging> Creation of a common communication portal with text and voice based communication applications
Photo Shots & Video Streams> During a PoC conversation, instant picture shots or short video clips can be streamed to the other party, by simply pressing a button
ITU/CoE Workshop 12/07/2001 Page 36 © Siemens, 2004
IMS – Pushing New Services Use cases of bundled PoC applications
PoC_Presence& Location
PoC_Chat
PoC_Push-to-Watch
You have a PoC Session with your buddies and during this session you want to show them where you are.Push-to-watch and pictures of you and your surrounding will instantly be streamed to your friend while talking!
During an ongoing PoC sessionyou want to inform one of your buddies about an important aspect - in private -:
Invite him for a chat!
You initiate a PoC session with your team asking for important information:
one of them will answer by PoC_Call (voice based)
and another by PoC_Chat (text based)
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IMS – Pushing New Services Short description of Video Telephony
Video Telephony
enables you to a more natural form of communication
gives you the opportunity to talk and to see your partner (& its surrounding) during your conversation in real-time
has a camera function, which can be flexibly switched on/off
can be enhanced with Presence, Conferencing, Collaboration tools like document sharing, etc.
93% of communicationis what we see
ITU/CoE Workshop 12/07/2001 Page 38 © Siemens, 2004
IMS – Pushing New Services Use cases of Video Telephony
Share a moment with family/friends: “Hi Brian, I would like to show you where I am right now!
Families living apart – Dad is on a lot of business trips, but still wants to see his kids; and they want to see, where he is.
Surveillance: Baby-phone: “How is my baby doing?” On vacation: “Is everything o.k. at home?”
Remote Diagnostics for medicine, technical experts, car repair, etc.
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IMS – Pushing New Services Short description of Information Sharing
Display Sharing> Share the view: You able to see what is on my screen> With two options: You can/ cannot save,what you see.
Remote Guidance> Guide through it: You will guide me through the information,
which is on my (and also your) screen.Application Sharing
> Joint work: Both parties work on one file simultaneously.Both parties are able to modify the file.
Bundling with other applications> Multi-Service Bundling: Look on it!
Work on it!Talk about it!
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You told me, how easy it is to make a reservation via mobile.But I can’t make it: You guide me through the service –Remotely, because you are not in Cannes right now.
IMS – Pushing New Services Use cases of Information Sharing
Display Sharing
Remote Guidance
Application Sharing
You are sitting at the airport waiting for your flight to take off and have been working on a presentation.
You would like to get a feedback from a colleague in the office. Show him your slides!
Jointly looking at your slides, you can discuss which aspects you could change.bundled with
voice application
‘Just take a look on the last email I have received …’
‘OK, I will show you a photo of my new baby born. Let’s have a look at my screen …’
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Conclusions for IMS
Todays mobile networks lack some functionalities
This gap is filled by IMS
IMS provides a 3GPP standardised infrastructure for an efficient deployment of numerous multimedia services
IMS enables peer2peer communication in the ps domain
IMS provides an efficient multimedia oriented session control
IMS keeps the value chain within operator’s network
IMS comes with an state-of-the-art service creation concept
IMS leverages the process of finding the UMTS killer application
One IMS client supports all IMS services
HSS
MRF
ITU/CoE Workshop 12/07/2001 Page 42 © Siemens, 2004
IMS is reality
… and we are looking into a bright future
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