IMS-10 “Migration to IMS”

Steve NorthridgeUlticom

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September 10-12, 2007 • Los Angeles Convention Center • Los Angeles, California

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IMS Evolution

• Services delivered as point solutions within each network silo

• Expensive and sustainable only for limited core services

Network and Service Specific Service Silos

Service Independent Network Layers

• Creates shared and modular resources across multiple access methods

• Facilitates a unified user experience across multiple domains

Fixed Enterprise Wireless

Control

Service

Access

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September 10-12, 2007 • Los Angeles Convention Center • Los Angeles, California

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IMS Standardization

• IMS was originally defined by the 3G.IP industry forum in 1999

• 3GPP adopted IMS as part of Release 5 (evolution from 2G to 3G networks)

• 3GPP2 based the CDMA2000 Multimedia Domain on 3GPP IMS

• 3GPP Release 6 added interworking with WLAN• 3GPP Release 7, working with TISPAN, added support for

fixed networks

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September 10-12, 2007 • Los Angeles Convention Center • Los Angeles, California

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3GPP/TISPAN IMS

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September 10-12, 2007 • Los Angeles Convention Center • Los Angeles, California

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IMS Market Assessment

• Current Analysis, “IMS Market Assessment”, August 7, 2007– Ericsson: 37 contracts for IMS deployment and 80 trials– NSN: 30 commercial references and 50 trials– Alcatel-Lucent: 20 IMS “full deployments”– Difficult to assess what has been deployed– Some vendors claiming FMC, presence, instant messaging, POC

and VoIP as IMS services– Large portions of vendor roadmaps are based on standard that

have yet to be completed

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September 10-12, 2007 • Los Angeles Convention Center • Los Angeles, California

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Market Assessment (continued)

• Heavy Reading, “IMS Deployment Update: Promises & Challenges”, July 2007

– IMS is running behind schedule– Developments in mainstream Internet threaten the concept of IMS,

such as Over the Top (OTT) video services putting pressure on telcos to come up with quick fixes

– The IMS promise of a better application creation and deployment environment could be undermined by new Web 2.0 tools that could be used to “mashup” telco and web services

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September 10-12, 2007 • Los Angeles Convention Center • Los Angeles, California

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Web Services for Telecom?

• Web Services– Defined by W3C to request the

execution of remote services• XML / SOAP used for

communications

• WSDL is the XML format to describe the service and usage

• UDDI is the protocol for publishing information about the Web Service

– “RPC Web Services” are distributed function calls

– “Service Oriented Architecture (SOA) Web Services” are message oriented

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Mashups

• Mashups, also referred to as situational applications, were originally created in the browser by combining various widgets to form a service

• Server-based Mashups can be used to quickly offer new services built upon a set of Web Services made available through the UDDI

• BT has made its Web 2.0 Service Aggregation Environment (Web21C) commercially available to third party developers

– BT provided the following functionality: Voice calling, conference calls, messaging, authentication, location, subscriber profile information, and contacts

– The functionality is higher level and does not require telco development knowledge

– The Web Services abstraction layer uses SIP and Parlay X which are hidden from the user

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Internet Rhythm

Declaring that the new company will encompass a wide range of capabilities in various wireless technologies including GSM, CDMA and WiMAX., Beresford-Wylie said, "We need to lose the religion" and added that open standards will be central to the roll-out of future Nokia Siemens products.

….Simon Beresford-Wylie even went so far as to suggest that previous determination by many in the industry to create a proprietary and closed version of the mobile Internet may have been a mistake.

He said, ""There is only one Internet and I think we misunderstood that as an industry. Services and content will come predominantly from the Internet and we have to understand that. We’re moving from a world where there was a telecom rhythm to one that has an Internet rhythm,"

Source: TelecomTV, “The Nokia Siemens Strategy:Dump the religion, get on with the rhythm”, February 13, 2007

Simon Beresford-Wylie, CEO designate of Nokia Siemens

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September 10-12, 2007 • Los Angeles Convention Center • Los Angeles, California

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Removing the Garden Walls?

• Google sent a letter to the FCC indicating that open applications, devices, services and networks “should be mandated for commercial spectrum”, the FCC responded with a block of the 700Mhz spectrum that would be open to devices and applications

• In February 2007, Skype is urging the US FCC to allow mobile subscribers to employ any hardware or software they choose as long as it does not harm the network. Mobile operators often block free internet services such as VoIP

• Apple IPhone developed without operator influence offers WiFi to bypass the wireless network and as the advertising states offers “not the watered down version of the Internet or the mobile version of the Internet or the kinda .. sorta.. looks like the Internet .. Internet”

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September 10-12, 2007 • Los Angeles Convention Center • Los Angeles, California

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Pragmatic IMS Deployment

• VDC in their research note titled “Signaling Networks Are Dead. Long Live SS7!”, July 2007, indicates that Service Providers do not believe there are compelling applications to justify the expense of moving to packetized networks. Operators are looking to add just enough to support revenue generating services. This implies that networks will become hybridized and service infrastructures will need to bridge the gaps.

• Current Analysis in their “IMS Market Assessment” dated August 7, 2007 indicates that IMS becomes a subset in a larger architectural framework to accommodate non-IMS traffic.

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September 10-12, 2007 • Los Angeles Convention Center • Los Angeles, California

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Hybrid Networks

SS7 Based

Network

Abstraction of functions into Web Services

IMSBased

Network

NakedSIP

BasedNetwork

3rd PartyWeb Services Applications

Service Provider Domain

3rd

Party Domain

UDDIWeb

ServiceRegistry

Internet

Telco Web Services Mashup• Abstraction provides Web

Services Appropriate for each network

• 3rd Party Applications can use the Web Services to offer services in one network or across networks

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Future Role of IMS

“IMS is not, on its own, enough to enable an operator to deliver a rich set of revenue-generating services to the market. IMS is a good environment for creating or reimplementing a core set of specialist carrier-grade telco services, such as voice messaging, location, and presence. IMS gets these services off proprietary hardware and makes them easier and cheaper to maintain and enhance. While each of these core services has an intrinsic value, operators will make more money out of them in a next-generation IP world if they can blend their core service with other functions in innovative ways to create value-added services: They need to make these SIP-based core services available for mashup.”

- Telco Web 2.0 Mashups: A New Blueprint for Service Creation, Light Reading, May 2007

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