Hai-Young Yang

1
IMS for MMoIP(VoIP) Service in Cable Network

• Hai-Young Yang
• Director
• Lucent Technologies Korea
• June 13, 2006

2
What is IMS?

• An IP multimedia and telephony core network
• IMS is defined by 3GPP and 3GPP2 standards
  organizations
• Based on IETF (internet) protocols
• IMS applies equally well to wireless and wireline
  access carriers
• Supports IP to IP sessions over cable, DSL,
  802.16, 802.11, CDMA packet data, GSM/EDGE/UMTS
  packet data, etc.
• Equivalent to IP telephony systems being invented
  by some operators such as Verizon wireline. Both
  use IETF protocols. But IMS is standards-based.

Business Implications IMS cost-effectively
enables lifestyle-targeted, blended services,
positioning the operator to own the subscriber
regardless of how they access the network
3
IMS - Industry Standard Architecture

• IMS (IP Multimedia Subsystem) is
• Same framework for any kind of access (wireless
  or wireline) and any kind of traffic VoIP,
  data, multimedia, supporting multiple clients and
  endpoints
• Defined with Open Standard Interfaces -gt 3GPP and
  3GPP2, and based on IETF Protocols (SIP, VoIP,
  RTP, ...)
• Standardized interfaces between applications,
  core transport network layers, and back-office
  systems
• Provides coordination or synchronization as
  required
• Capable of Interworking with PSTN and Legacy IN
  Based Services (8xx, LNP, etc)

4
IMS Benefits
For End-Users
For Service Providers

• Retain ownership of the subscriber
• Provide better quality services than IP today
  avoid migration of value to the client device
• Differentiate services from competition and sell
  more services
• Choose the applications to create blended
  services
• Home control same services even when the user
  roams
• More cost-effectively deliver high value, new
  lifestyle services to market
• Minimize client-server airlink traffic by
  leveraging IMS network information
• Reduce costs of new services through common
  applications infrastructure
• Reduced OPEX
• Centralised data and common functions
• Standardised QoS, roaming, billing

• Common contacts across services
• Enterprise personal lists, enhanced with
  capability indicators
• Multimedia enriched communication
• Multiumedia information can be sent and received
  during a voice call
• Voice enriched data applications
• Predictable service interactions
• Operator can set defaults for service
  interactions to maximize ease of use and service
  quality
• Subscribers can set policies on how they want
  their services handled,

Building Blocks for Lifestyle Targeted Blended
Services
5
The Real Opportunity Blended Services,Not Just
Bundled Services
Bundling alone will not create lasting
incremental value.

• Bundling alone will only shrink the customers
  spending as value is eroded
• Seamless blending of voice (wireline and
  wireless), data and video services required to
  realize full revenue potential
• Providers with scale and wireline wireless
  networks will have an advantage
• Providers with a strong convergence story/vision
  will flourish and dominate

Bundling drives commoditization and price erosion
250
200
Feature Driven
150
Monthly ARPU (U.S. Dollars)
100
50
0
Voice, Video Data
Voice Only
Voice Data
Blended services Increased revenues, customer
loyalty

• Everyone is bundling to retain subscribers.
• Bundling simplifies billing - does not reduce
  other OpEx.

Source Adapted from Telcos Take on Cable with
Video Delivery, The Yankee Group, February 2004,
page 8.
6
ARPU Increases With Lifestyle Services
New Services New Revenues For Service Providers
40 increase in revenue-per-year
4B
Lifestyle Services - Rich media entertainment -
Interactive - Context sensitive - Highly
personalized
Activity Agent
LIFESTYLE DRIVEN
3B
Portable Travel Agent
IP TV
Live Wire
Unified Communications
2B
Location-Based Service
FEATURE DRIVEN
1B
Push-to-Talk
Media/ Content
Instant Messaging
0
Source Lucent Primary Market Research and
Modeling, 2004
Lifestyle services help the operator maintain
relationships with subscribers, regardless of how
they access services
7
To Deliver Lifestyle Converged Services, the
Approach to Service Delivery Needs to Change

1. Todays point solutions are expensive and dont
   readily support new lifestyle targeted blended
   / converged services
2. Core Networks need to embrace a Service Delivery
   Framework that enables blended services

Key Attributes Distribution, Consolidation, and
Convergence
8
IMS is a Services Architecturefor Cable Operators

• Mobility is an essential component of the
  consumer business offers
• ILECs are implementing grand-slam bundles
  MSOs must match
• IMS and IP architectures enable greater ARPU,
  margin, stickiness and overall operational
  efficiency
• Competitive advantage can be achieved by adoption
  of a common network and application platform
• Economies and new services potentialare better
  with cable cellular
• Content and Applications (not price)become the
  differentiator
• Unique content-rich services can leadthe
  consumer market take share
• Will protect against bundle-churn andexcessive
  bundle discounting

An IMS Services Architecture allows a Service
Provider to own its subscribers even when using
elements of other operators networks
9
Packet Cable Access in IMS Architectures
Home Application Layer
Unified Suite of Communication Services
Telephony Servers
Messaging Servers
VoD Servers
Gaming Servers
Home Session Control Layer
S/I-CSCF
HSS
IP/MPLS Transport
Cable
Private line/Ethernet/WiFi
DSL
Access Layer Home or Visited Access Network
P-CSCF
UMTS/CDMA
Session Border Controller
P-CSCF
P-CSCF
PDF
P-CSCF
PDF
PDF
RACS
PDF
PCMM Policy Server
WLAN GW
BRAS
RACS
Wireless Packet GW
CMTS
DSLAM
Router/FW
HLR
Enterprise LAN
Cable Access Network
DSL Access Network
AAA
SGSN
CDMA RAN
Modem
Modem
Public Hot Spots
UTRAN
802.11 Access Points
10
CableLabs Selected IMS Architecture with PCMM
Cable Access

• Extend IMS QoS Policy Decision Function (PDF) to
  interface with PCMM Policy Server
• Allows cable subscriber use of IP Services from
  peer IMS access networks (e.g. cellular)
• Support for WiFi/cellular roaming and session
  handovers
• Peering interfaces for
• Interconnect/inter-operability
• Subscriber authentication and roaming
• MGW/MRF sharing (vocoding)
• Accounting records exchange

. . .
Application Server
Application Server
HSS
Service Broker
MGCF
I-CSCF
S-CSCF
MGW
P-CSCF
IP TransportNetwork
Gq (Diameter)
PDF
Go
PCMM
GGSN
COPS
Policy Server
CMTS
Gm (SIP)
SGSN
RNC
BTS
SIP
Cable Modem
POTSDevices
SIP
S-MTA
11
What the standards give us PacketCable 1.x and
2.0

• NCS is the underlying protocol for 1.x
• SIP is the underlying protocol for 2.0

• PacketCable 1.x (not illustrated)
• Cable specific definition
• Narrowband VoIP focused
• QoS
• Via DQOS mechanism
• Well defined and in deployment
• PacketCable 2.0 (Illustrated)
• Cable specific definition
• Supports multimedia services
• Text, data, gaming, voice, video,
• QoS
• Uses PCMM
• Under definition

CableLabs adopted IMS as a standard architecture
of PacketCable 2.0
12
Services Drive Underlying Cable Operator
Infrastructure Decisions SIP and / or NCS
Value, RPU, Differentiation
time

• Cable services today are vertically oriented
• Beyond traditional video, IP provides a common
  logical transport layer for data, IP video,
  voice, broadband multimedia and converged
  services
• NCS supports narrowband VoIP
• SIP supports a wide variety of services ranging
  from narrowband VoIP to converged services

Narrowband VoIP
Broadband Multimedia
High Speed Data
Video
Converged

• Analog /Digital Bcast
• PPV
• VOD
• etc

• Internet access
• IP streaming video
• etc.

• Games
• Video Tel / IM / Conf
• Collaboration
• Personalized
• IPTV
• etc.

• POTs residential
• Enterprise

• Wireless / cable
• etc.

Services

• Softswitches
• Gateways
• etc.

• Applications mgr

• Session mgr

Session / resource Control
SIP
NCS
Protocol
DQoS
PCMM
QoS (Access)
IP
Logical transport
DOCSIS 1.1 -. 2.0 -gt 3.0
Mac / Phy
Where do you want to be and how do you get there?
13
PacketCable 1.xThe Softswitch Model

• Designed for voice, not multimedia
• Optimized for legacy endpoints
• Focused on primary-line features, not multimedia
• Separates media from control, but not services
  from session limited opportunity for OPEX
  savings
• Proprietary application server interfaces-
  difficult to add new 3rd party services
• Does not address convergence with wireless

Application
Application
Softswitch (CMS)
Embedded Services
SG
MTA Control
MGC
NCS
TGCP
MTA
Trunk GW
IP Network
PSTN
14
Next Generation VoIP NetworksThe IMS Model
App
App
App

• Focus on revenue growth from new services and
  applications
• Infrastructure designed for voice, data,
  multimedia and other applications
• Optimized for new endpoints (next generation VoIP
  clients) and new access technologies (VoDSL,
  VoBB, 802.11, 802.16, etc)
• Legacy endpoints can be adapted to provide
  ubiquitous services across all endpoints
• Separation of functions optimized for next
  generation services session, data, applications,
  PSTN interfaces
• Well defined application interfaces for easy to
  deploy third-party services
• Converged architecture for simultaneous fixed and
  wireless access

Service Brokering
HSS Common Data
Session Control
MGC / SG
SIP
IP Network
SIP
Trunk GW
AGCF
SIP
SIP
SIP
PSTN
SIP Line Access GW
Legacy LAG
CableLabs selected IMS as a foundation technology
for PacketCable 2.0
15
Transition from PacketCable 1.x to IMS
Application
Application
App
App
App
Softswitch (CMS)
Service Brokering
HSS Common Data
Embedded Services
SG
Session Control
MTA Control
MGC
MGC / SG
SIP
IP Network
SIP
NCS
TGCP
Trunk GW
MTA
AGCF
SIP
Trunk GW
SIP
SIP
PSTN
Line Access GW
IP Network
PSTN
Legacy LAG
All the functional elements map from the
Softswitch model to the IMS model, but
transitions are expensive and error prone. Better
to start with the IMS architecture, rather than
evolve to it .
16
SIP vs. NCS
17
Architecture Alternatives By Primary Signaling
Protocol
18
Lucent Cable Services Solution
19
Breadth of MMoIP Services
Professional Consulting Define a viable and
secure MMoIP solution
NETWORK BUSINESS CONSULTING Develop MMoIP
business model, market entry strategies and
technology options, defining a blueprint for
transformation
NETWORK READINESS ASSESSMENT Assess network
features, capacity, and recovery needed to
support MMoIP, to validate transmission
capabilities and service quality
RELIABILITY SECURITY Assess strength of network
security, design and implement elements to
enhance security, and enable ongoing business
continuity and disaster recovery
OPERATIONS ANALYSIS OPTIMIZATION Analyze
existing operations against best practices, and
support developing new operations models to
support multimedia services
NETWORK, OSS APPLICATIONS DESIGN Create the
solution architecture network infrastructure to
support MMoIP with the existing network systems
PROJECT MANAGEMENT Establish plans, scope,
controls, and tracking processes to guide the
implementation of solutions manage vendors and
final acceptance processes
HEAD END CONSTRUCTION Deploy head end equipment
per design specifications, including site survey,
antenna orientation, video signal reception tests
and content acquisition tests
ENGINEERING INSTALLATION Perform detailed
engineering and installation of associated
equipment and Service distribution hierarchy

• INTEGRATION VALIDATION
• Conduct field integration and validation of
  end-to-end systems components across multiple
  systems and across the network

SOLUTION VERIFICATION TESTING Configure a lab
environment and test to validate the
interoperability of products and components as
part of the overall solution
Deployment Create and implement a MMoIP
solution
Maintenance Management Outsource key
elements of MMoIP solution
NETWORK SECURITY MANAGEMENT Provide ongoing
remote network management of an MMoIP solution
using state-of-the-art tools and technology, as
well as highly skilled technicians, ensuring 24x7
service
TECHNICAL SUPPORT HARDWARE MAINTENANCE Deliver
remote support via phone, modem or VPN, for rapid
response, diagnosis, resolution of system
issues outages, ensuring system currency with
most up-to-date software fixes
20
VOIP Network Back Office Integration
VOIP SI

• Multi-vendor VOIP SI
• Network, Backoffice
• Residential and Business
• end-users
• Bell Labs VOIP QoS,
• reliability analysis
• Multi-year multi-vendor
• maintenance

Linking and testing of system components to merge
their functional and technical characteristics
into a comprehensive, interoperable system
21
Testing Operational Readiness

• Validation Requires
• Functionality Testing
• Operational Testing

System level integration verification is critical
to overall success
Validate End to End Architecture
Validate System Level Performance
Validate Sub-System Level Performance Telephony
Core Network OSS/BSS Security
Validate Component Level Performance Call Server
Signaling Gateways Media Gateway
Controller Media Gateways Media Servers
Application Servers(Voice Mail, SMS)