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Copyright © 2005 Telcordia TechnologiesAll Rights ReservedCopyright © 2005 Telcordia TechnologiesAll Rights ReservedCopyright © 2006 Telcordia TechnologiesAll Rights Reserved

IP Multimedia Subsystem (IMS)

Industry Status/ Expectations/ Challenges

Contacts:

Hala [email protected](732) 699-6525

Zehan [email protected](732) 699-6163

Contribution to:

NANC FoN

October 4, 2006

IMS Industry Activities - 2

IMSIndustry Status/Expectations: Outline

Background and Drivers Standards Activities Research and Industry Forecasts

– Where the U.S. Stands on IMS Key Industry Players Industry Activities

– Implementations– Trials

Challenges– Risks, Obstacles and Success

Expected Adoption Cycle


IP Multimedia Subsystem

IMSIMS: An NGN Solution

Wi-Fi Wi-Fi DSL DSL

CableCable3G3G PSTNPSTN

InternetInternet

IMS Services•Push-to-talk

•Gaming•Video conferencing


IMSMarket Trends and Operators

*Source: RelevantC 2004

MSO: Multi-Service OperatorVSP: Virtual Service Provider


IMSPSTN to IMS Migration

PSTNMobile Internet Video

User Device

Switching & Transport

Call/Session Control

Service Applications

OAM&P

VoIPMobile

Internet Multi-Media

Services Video

IMS


PSTN Emulation

and Simulation

PSTN Emulation

and Simulation

True IMSTrue IMS


PSTNPSTN

Beginnings of IMS


PSTN Emulation and

SimulationTrue IMS


PSTN

Legacy

SIP GW

mobility GW

SMS GW

TransitionalMessaging App Server (AS)

IMS

HSS

Presence

SIP AS


IMSSS7 and IP

The advent of IMS does not mark the immediate demise of the PSTN or SS7

– SS7 continues to be a critical piece of value services such mobile, SMS and LNP

– The PSTN – as we know it – still has the widest reach to the world population and size matters when it comes to network value

IP migration takes time and carriers will vary in level of progress; some will get there sooner than others


IMSStandardization

IMS aims to standardize network interfaces and avoid fractured technologies and proprietary products

– Open network interfaces– Open platforms

Applications andServices Layer

Applications andServices Layer

OSS / BSSLayer

OSS / BSSLayer

ControlLayer

ControlLayer

NetworkLayer

SP#2SP#1


IMSActivities at Standards/Industry Forums

Background on 3GPP and 3GPP2– 3GPP was pioneered by the European

Telecommunications Standards Institute (ETSI) early in 1998 with the proposal to create a Third Generation Partnership Project (3GPP) focusing on Global System for Mobile (GSM) technology

– 3GPP2 was born out of the International Telecommunication Union's (ITU) International Mobile Telecommunications "IMT-2000" initiative, covering high speed, broadband, and Internet Protocol (IP)-based mobile systems for ANSI/TIA/EIA-41 (North America and Asia)



Roots of IMS: 3G Activities (3GPP and 3GPP2)

– 3GPP (3rd Generation Partnership Project)• Releases 4, 5, 6, 7• TSG-SA: TSG Service and System Aspects (TSG SA) is

responsible for the overall architecture and service capabilities of systems based on 3GPP specifications, including charging, security and network management

• TSG-CT: The TSG Core Network and Terminals (TSG CT) is responsible for specifying terminal interfaces (logical and physical), terminal capabilities (such as execution environments) and the Core network part of 3GPP systems



3GPP2 (3rd Generation Partnership Project 2) – CDMA2000 mobile networks

– Mirroring IMS developments in 3GPP– TSG-S: The Services and Systems Aspects (TSG-S) is

responsible for the development of service capability requirements based on 3GPP2 specifications. It is also responsible for high level architectural issues

– TSG-X: The TSG Core Networks (TSG-X) is responsible for:• charging, accounting and billing specifications • management of work items placed under its responsibility; • evolution of core network to support interoperability and intersystem

operations; • network support for enhanced privacy, authentication, data integrity and

other security aspects; • specifications for international roaming; • multimedia services (e.g., voice over IP) • private network access • QoS support • IMS specifications


ITU-T


IETF

ATIS

ETSI

NGNFramework

NGNOSS

3GPP

NGN Focus GroupNGN Focus Group

STF NGNSTF NGN

GSC

SG17SG17

GSC9GSC9

WAE FGWAE FG

MWS FGMWS FG

VoIP FGVoIP FG

TISPANTISPAN WG8WG8

WG1WG1

WTSCT1P1WTSCT1P1PTSC(T1S1)PTSC(T1S1)

OPTXS(T1X1)OPTXS(T1X1)

TMOC(T1M1)TMOC(T1M1)

CableLabs

OASIS

SA5SA5

DSL Forum

ECMA

NGN@homeNGN@home

Parlay

JWGJWG

PAMPAMCCUICCUI CBCCBC

PMPM

ApplicationsApplications

LILIAT-DAT-D

WG7WG7

WG3WG3WG4WG4 WG5WG5

WG6WG6WG2WG2

GlobalNGN

Framework

WTSAWTSA

SG11SG11

SG02SG02

SG19SG19

SG04SG04NGNMFGNGNMFG

SG09SG09

SG13SG13

3GPP2

TSG-CTSG-C

TSG-STSG-S

TSG-ATSG-A

TSG-XTSG-X

SG03SG03

TIA

TR-41TR-41TR-8.8TR-8.8

3GPP2 OP3GPP2 OP

TR-45.2TR-45.2TR-45.6TR-45.6

TR-34.1.7TR-34.1.7

CPWGCPWG

MESAMESA

SG15SG15

TeleManagementForum

SA2SA2

OBFOBF

IPDR

RosettaNet

EPCglobal

OSS/J

DMTF

OMA

NGN* Focus GroupNGN* Focus Group

GeneralGeneral

InternetInternetO&MO&M

RoutingRouting

SecuritySecurity

TransportTransport

PGCPGCSA1SA1

SA4SA4

GSC10GSC10

W3CSG16SG16

INCINC

TR-45TR-45

SA3SA3

NIIFNIIF

* Forums as of June 2005



IETF: IP Telephony and Internet Standards– IP

• IMS nodes must support IPv6• Mobility for IPv4

– SIP, SIP Peering and SIP-based services simulate popular PSTN services and more, which include:

• Chat• Location-based services• Picture messaging (leverages IM and buddy lists)• Video conferencing

– ENUM– DIAMETER– Emergency calling geographic location– Global communications for disaster recovery



ETSI TISPAN: – Recognize that evolution to IMS will take time and

other forms of PSTN emulation will exist until full IMS is reached

– Since September 2003, the ETSI Technical Committee TISPAN has been developing a set of standards that can be used by industry as the foundation for the Next Generation of Networks (NGN)

– In December 2005, NGN R1 was approved



ITU-T Study Group (SG) 13– Focus Group on Next Generation Networks

(FGNGN) approved NGN Release 1 Scope and Requirements in November 2005

– Also approved IMS for NGN• QoS• Functional architecture• Service scenarios

ITU-T SG 11 – Approved draft technical report specifying the

aspects of IP QoS signaling requirements in December 2005



ATIS– NGN Focus Group:

• NGN Framework

• Gap Analysis

– PTSC (Packet Technologies and Systems Committee)

• IP-IP interconnection of carrier networks Public and infrastructure ENUM

• Call control

• Border Control functions



Open Mobile Alliance (OMA)– Formed in June 2002 to facilitate global user

adoption of mobile data services• Currently, there are 15 Technical Working Groups and

two Committees of the Technical Plenary (e.g., Browser & Content, Games Services, Location, Messaging, etc.)

– Consolidated the WAP Forum, Location Interoperability Forum (LIF), SyncML Initiative, MMS-IOP (Multimedia Messaging Interoperability Process), Wireless Village, Mobile Gaming Interoperability Forum (MGIF), and the Mobile Wireless Internet Forum (MWIF) into OMA



Other Industry Impacts of IMS that will drive standards or de-facto standards efforts:

– Billing and OSS changes• Settlements

• Detail Recording

• Home Subscriber Server (HSS)

• DIAMETER is the chosen accounting protocol

• Even IPDR is not IMS-ready

– Special SIP-based handsets


IMSIMS Industry Players

Service Providers (including ISPs, ASPs)

AT&T British Telecom (BT) Cingular France Telecom Microsoft NTTDoCoMo (Japan) Sprint-Nextel South Korea Telecom TeliaSonera (Finland

and Sweden)

Equipment vendors• Cisco

• Ericsson

• HP

• Lucent

• Nokia

• Nortel

• Siemens

• Tekelec

• Verso


IMSOther Industry Players

Web developers are proponents of open Internet access (Net Neutrality)

Competition is imminent; – 3rd party voice, like Skype and Vonage do not need

IMS Service providers, such as BT, recognize that

their next-generation revenues could be affected if the applications providers do not come on board



IPSphere– Focus on the “business of IP”– Members include:

• Alcatel• AT&T• BT• Cisco• Ericsson• HP• IBM• Nortel• Siemens• Verizon



IMS Forum– Used to be the International Packet

Communications Consortium (IPCC)– Accelerates the adoption of IP Multimedia

Subsystems by providing an environment for discussion and resolution of real world implementation issues relating to interoperability, best practices, and standards-based architectures


IMSResearch and Forecasts

Research from Apertio (5th April 2006, CTIA) shows that US Leads the Way Towards IMS

– US global telecommunications operators overwhelmingly place greater emphasis on deploying IMS, in comparison with European operators

– 86 percent of US operators classify it as a key business priority, versus 66 percent of their European counterparts

– Nearly one in five US operators also expect return on investment (ROI) in less than two years - more ambitious than those in Europe

– The research, ‘IP Independence’, also found key drivers towards IMS are

• the cost of new service provisioning on conventional architecture, and

• the need to offer attractive service bundles to subscribers to prevent churn and increase data usage


IMSResearch and Forecasts (contd.)

Key findings from the Apertio research are: – 93% of respondents believe that IMS will have a positive

impact on operational cost reduction, with 40% considering that impact to be ‘significant’

– 85% of respondents also see the removal of legacy infrastructure as a critical aspect of reducing operational cost

– 79% of carriers are using a disparate combination of tactics to deliver IMS, highlighting a lack of best practice

According to Pyramid Research (Warren Communications, August 18), 66% of household VoIP users will run on an IMS platform by 2010


IMSResearch and Forecasts (contd.)

Some studies show the main motivation for IMS is to Reduce Operating Costs

At the VON Fall 2006, IMS panel discussions revealed that:

– 77% of survey respondents plan to deploy IMS in next 2 years

– ROI is still a “grey area”– Majority is looking for long-term savings of 10.5% – Service capability may not be the main driver for IMS

deployment


IMSTrials

Global Trial of IMS R3– The Multiservice Switching Forum (MSF) will hold a

global trial in October 2006 (network test facilities across three continents)

– Involves five leading carriers: BT, KT, NTT, Verizon and Vodafone

– Concerns over interoperability and roaming for real-time applications

GSMA global trials – GSMA is a global trade association consisting of 2G

and 3G operators and manufacturers– Recent press releases by Siemens and Time Warner

Cable indicated their preliminary trials demonstrated successful integration of fixed line, mobile and WiFi


IMSTrials (contd.)

IPSphere Forum announced in May 2006, several key milestones in the Forum’s formal work program

On May 9, in Tokyo, the IPSphere staged a working instantiation of mediated next-gen, video services to leading Asia Pacific networks


IMSObstacles/Challenges

The following are recognized as the major categories of challenges for IMS operators:

– Business Issues• E.g., choosing the correct strategies for doing business in a

multi-carrier-vendor environment– Technical Issues

• E.g., choosing the correct strategies for introducing elements of IMS into any network

– Interoperability• E.g., keeping track of the crucial migratory issues,

interoperability and interconnectivity with existing network infrastructure


IMSObstacles/Challenges (contd.)

Other challenges include – Handset compatibility– Lack of high-quality dual-mode capable handsets– Battery life – Differences due to operator implementation of

• early IMS• Authentication mechanisms• SIP compliance

– Subscriber-centric policy management• Making IP applications available over any network

requires greater focus on the subscriber, rather than on any particular network


IMSObstacles/Challenges (contd.)

There are concerns that IMS is being delivered in releases, and that different vendors might conform to different releases, like what happened with IN

There are questions as to “who’s in charge” among the standards bodies

Roll-out of IMS will likely create additional traffic– Need measures to avoid severe congestion

problems


IMSObstacles/Challenges: Charging

Challenges still lie ahead for session and event-based charging

Dual-mode Handsets (that could be used in multiple networks) could expedite IMS development

– But, revenue management, billing and rating of calls in the dual-mode environment is a “new frontier”

– Capturing all the pieces of a call or event and correlating them is the hardest challenge


IMSOpen Issues

IMS will be limited by the availability of an all-IP network; its magic will be fully realized when IP is everywhere

Web application developers such as AOL, Microsoft, have the same goal, but do not see the need for a platform like IMS

– IMS fits the legacy provider’s business model– Microsoft argues that web technologies that give

people anytime, anywhere already exist


IMSAdoption Cycle

Legacy and IMS Networks will coexist for a long time

According to vendors, carriers and analysts, it could be anywhere from seven years up to 15 years before most of the service providers will be running most of their services over an IMS core network

IMS may have a long adoption cycle, but operators are predicting IMS services will reach critical mass within three to five years


IMSAdoption Cycle (contd.)

Recent research by In-Stat, found the following: Wireless carrier revenues from IMS applications in

the US could be as high as $14 billion by 2011

It is likely that the significant growth in IMS applications and services being offered by wireless will begin to appear well into 2007

Despite that relatively late start, there could eventually be as many as 72 million IMS users in the US by 2011


IMS

Comments/Questions?

Thank you

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