Download IMS_new_possibilities

IP MultiMedia Subsystem (IMS)
New Service Possibilities
Alain Bouvier
[email protected]
CDG International Roaming Team Meeting
Kauai, December 13-14, 2004
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CDG IR Team
Covering…
 IMS Overview;
 IMS Interworking & Roaming;
 Ericsson IMS offering.
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CDG IR Team
Main IMS Standardization groups
 3GPP TSG SA WG2 (Architecture);
 3GPP TSG SA WG1 (Services);
 3GPP2 TSG-X WG 3.2 - MultiMedia Domain (MMD);
 3GPP2 TSG-X WG 3.4 - MultiMedia Services (MMS).
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CDG IR Team
Third Party Statement On IMS
“In the next 18 months, carriers will
implement IMS platforms largely for specific
applications, creating beachheads for its
market penetration. Beyond that, IMS will
become a standard service environment for
wireless operators and for creating
converged mobile and fixed services.”
(Source: Yankee group March 22, 2004)
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CDG IR Team
IMS Momentum
 The OMA (Open Mobile Alliance) “IMSinOMA” Requirements
Document (RD) provides a single general use case which
rationalizes IMS as the only globally standardized SIP-based
architecture (to date) that addresses the needs of mobile
operators in terms of session management, security, mobility,
QoS and charging.
“OMA service enablers shall make use of capabilities
provided by the 3GPP and 3GPP2 IP Multimedia Subsystem
(IMS) when IMS is used”;
 The ETSI TISPAN Group (Telecoms & Internet converged
Services & Protocols for Advanced Networks) NGN (Next
Generation fixed Network) will use the 3GPP IMS technology.
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CDG IR Team
IMS Overview
 IMS is an framework for
enabling advanced IP
services & applications on
top of packet bearer;
Support
System
 Applications;
 Service Enablers:
 Group Mgmt;
 Conferencing;
 Messaging;
 Presence;
 Service Execution
Environment
 Etc.
Application Layer
AS
AS
Management
Provisioning
 IMS supports new IP
based MM services and
interoperability with
traditional telephone
services;
HSS
S-CSCF
P-CSCF
I-CSCF
SBG
IP Network
Charging
MRFC
MGCF
SGW
Number Mapping
CS Network
MMGW
 IMS is “access aware” &
“access independent”:
WCDMA, GSM,
CDMA2000, wireline,
WLAN, etc.
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Common System
IMS clients
2004-12-13
AS :
CSCF :
HSS :
MRF :
SBG:
MGCF:
MMGW:
SGW:
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MRFP
MRFP
Interworking
Application Server - Application logic
Call Session Control Function - Session control and signaling
Home Subscriber Server - Maintains the home subscriber profile
Media Resource Function - Media stream manipulation
Session Border Gateway
Media Gateway Control Function
MultiMedia GateWay
Signaling Gateway
CDG IR Team
IMS Overview (cont…)
 Service Enablers and Core Elements dynamically work
together to create new Multimedia services;
 Elements are reused in different combinations.
Messaging
Registration
Authentication
Conferencing
Policy handling
Presence
Service invocation
Location
Charging
Media distribution
Group management
Service Enablers
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Service Core Elements
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CDG IR Team
IMS Main Benefits
 Naturally enables convergence of internet and
telecommunication services;
 IMS introduces common functions and enablers that can
be reused (i.e. horizontal functions such as charging,
provisioning and presence can be re-used for additional
services launched);
 IMS is an architecture that supports many operator’s
requirements of the Data Services business model (e.g.
provides Network Control when required, i.e. provide
control or push it to the client if it makes more sense).
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CDG IR Team
Next Generation Network (NGN) Requirements
• …Interworking & World Wide Roaming…;
(Source: CDG FGWN Group)
“IMS Interworking means that two different IMS networks are
connected through Inter-PLMN IP network to enable SIP
control and transport of user plane”
“IMS Roaming means that VPLMN packet network resources
are used in order to connect to the IMS core network, which
resides in HPLMN (short term case) or VPLMN”
(Source: GSMA IR.65 – “IMS Roaming & Interworking Guidelines”)
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CDG IR Team
IMS Interworking
GRX is preferred for:
MMS/IMS Interworking
Server
Server
Server
Server
CRX/GRX
?
S-CSCF
P-CSCF
S-CSCF
I-CSCF
I-CSCF
P-CSCF
Internet
?
Other ?
HA
GGSN
PDSN
Access
Network
UE
CDMA2000
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SGSN
PDSN :
HA :
SGSN :
GGSN :
GRX :
CRX :
Packet Data Serving Node
Home Agent
Serving GPRS Support Node
Gateway GPRS Support Node
GPRS Roaming Exchange
CDMA Roaming Exchange
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Access
Network
UE
GPRS/UMTS
CDG IR Team
IMS Roaming – PCSCF in HPLMN
 IMS roamers connect to the HPLMN
through Mobile IP (MIP) giving full
service control to the HPLMN;
 The visited network
does not have to have
an IMS domain.
Home
Network
HSS
IMS Home
Network
S-CSCF
HA
P-CSCF
CRX
PDSN
UE
Visited
Network
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IMS
Visited
Network
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CDG IR Team
IMS Roaming – PCSCF in VPLMN
 IMS control shared between
home and visited network;
 Offers benefits like improved
QoS and security. The
VPLMN is not a bit pipe.
Home
Network
HSS
IMS Home
Network
S-CSCF
I-CSCF
CRX
PDSN
UE
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P-CSCF
IMS
Visited
Network
Visited
Network
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CDG IR Team
Ericsson IMS
Offerings
Ericsson Instant Talk
Compliant with the only available multi-vendor
specification (PoC)
Commercial
Offerings
Engine Multimedia
Wireline VoIP, IPCentrex, other MM services
EIT
IP Multimedia System
EMM
IMS infrastructure including SIP
reachability, presence, GLMS, ISC, etc.
weShare
weShare
SDS
A family of Combinational Services combining
the CS and PS domain
Trial
Offerings
Service Development Studio
Development tool for new applications
IPMM
Services offering for IPMM
Advisory services
Managed services
Integration services
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Available
Now
CDG IR Team
Ericsson Instant Talk (EIT)
Instant Talk
Application
Server
 Ericsson’s implementation of Push-to-Talk over
Cellular (PoC);
 Based on IPMM (i.e. Ericsson’s implementation of
IMS/MMD);
IP Multi Media
IPMM
 Contact list integrated with phones;
 User Features Example:







EIT
Client Signaling
Open/closed chat user groups
Add users to an on-going session
Group management from handset
Pre-defined and add-hoc groups
Subscribe to each others presence
Do not Disturb (DnD)
Floor control
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Media
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CSCF - Call
Session
Control
Function
HSS - Home
Subscriber
Server
MRF - Media
Resource
Function
CDG IR Team
weShare – an Evolution Path to Mobile MM
Mode 1
“Verbal protocol”
1. Create/find content.
2. Send it.
3. Call and ask to retrieve.
4. Wait.
5. Talk about it.
MMS
email
Mode 2
“Communicate & Share”
Mode 3
“Communicate, Share &
Interact”
1. Call.
2. Create/find content.
3. Send it while talking.
4. Talk about it.
1. Call.
2. Create/find content.
3. Add it while talking.
4. Talk about it, interact with
it, point to it, manipulate it…
Directions on a map
Shared Browsing
Whiteboard
WS-Image
WS-Motion
Perceived “real-time”-ness
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CDG IR Team
Conclusion
 IMS is getting momentum as the architecture of choice for
the introduction of Mobile & Fix Multimedia Services;
 Regulatory bodies in Europe are encouraging the industry
to address the Interworking and Roaming issues in order
to avoid the fragmentation of IMS services;
 The GSMA organization has introduced the “IMS Roaming
& Interworking Guidelines” document and recommends
using GRX networks for Interworking/Roaming;
 Combinational Services enables the combination of realtime CS voice with near-real-time Packet Data services to
enrich the end-user’s experience.
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CDG IR Team
TAKING YOU FORWARD
EMC/QX/R-04:063 Uen Rev A
?
QUESTIONS ?
?
2004-12-13
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CDG IR Team