Transcript IMS.Solution.Version..

Ellacoya DPI for IMS
March 2007
Ellacoya Networks Company Confidential
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Digital-Content Expanding Well
Growth in consumer use of
digital content and internet
services
 Digital music now 10% of physical
music sold; mobile music
downloads approaching 10%;
both growing ~90%1
 1.2 million households paid for
video downloads in Q3 2006, with
potential for 3x growth2
 Peer-to-peer downloads by 6
million homes3
 Entertainment services - games,
music, TV, video and gambling to
grow to $38 billion by 2011 from
~$18.8 billion in 20064
1 Source: Recording Industry Association of America, 2006 Mid-year Statistics
2,3 Source: The NPD Group, www.npd.com/press/releases/press_061220.htm
4 Source: Informa Telecoms and Media
Ellacoya Networks Company Confidential
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Professionals and Consumers Have Different Needs
Consumer Connectivity
Priorities
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Generic Web
IPTV
Video Download
Music – iTunes, others
Home Finance - Quicken
Professional Connectivity
Priorities
 Secure Enterprise
Applications
 Email
 Instant Messaging
 Video, Web Conferencing
 Generic Web
 Voice Services
Source for photos: Microsoft Corp.
Ellacoya Networks Company Confidential
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Shift in Use Presents Possibilities for New Services
Towards
From
Fixed $/month for up/down
bandwidth (3G, DSL, Cable)
Quota-based $monthly
subscription w/meter
Best efforts delivery and
access
Common handling for all
applications – enterprise
apps, music, video, email
and Web access
Fixed $/month with flexible
quotas or service levels by:
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Uplink/downlink bandwidth
On-net and Off-net usage
Application types with
limits for P2P traffic
Event type with free initial
use followed by chargeable
instances
QoS handling per user by:
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Subscription level
Application
On Demand by policy/portal
Policy control based on
application, group of
applications or user type
Source for photos: Microsoft Corp.
Ellacoya Networks Company Confidential
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IMS an Opportunity for Flexibility and Control for IP Network
Policy
Information
Base
P-CSCF
IMS-SIP
Enabled
Device
Radio Access
Network
IMS-SIP
Enabled
Applications
Broadband
Access
Policy
Decision
Point
S-CSCF
Call/Session Control
Function
IMS-SIP
Application
Services
IP QoS
Core Network
Uses common signaling for network services thru Call/Session Control
Function (CSCF) cloud
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Provides control for IP infrastructure like with TDM
Reuses applications for multiple access types
Incorporates policy control for roaming, QoS, subscription and any new
service configurations
Uses SIP/SDP starting with voice, push-to-talk and IM to video
Provides for charging standards for IMS services
Creates opportunity for new pricing models and service bundles
Ellacoya Networks Company Confidential
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The Need for Application Knowledge
IMS implements only SIP and SDP
as signaling protocols
 Provides for QoS and policy control
Many services use HTTP, HTTPS
or XML instead
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IPTV
iTUNES (music and video)
Gaming
Business Web services (eg.
Salesforce.com)
 Consumer Web services (eg.
Expedia.com, Ebay.com)
How much traffic will be IMS-SIP
compliant?
 Carriers can interrogate traffic for
Non-IMS or Pre-IMS applications and
use a common IMS policy
infrastructure and IP QoS core
backbone
Ellacoya Networks Company Confidential
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Non-SIP Services
Asymmetric Traffic Adversely Affects Network Use
Cumulative Bandwidth
Use Per Session
High bandwidth use: Video
download from Web server or
Peer-to-peer (P2P)
Medium bandwidth use:
Music download, streaming
video or audio, some gaming
Bursty use: Web-based
enterprise applications,
Email, Instant Messaging
Video download, P2P traffic
significantly spike bandwidth
use/subscriber
Up to 1 Billion estimated P2P
downloads for 20071
P2P Video / Video
Download
Streaming Video
Music
Download
Gaming, Multimedia
Conferencing
Email, IM
Enterprise Applications
Time
1 Source: Daiwa Research Institute, 2006
Ellacoya Networks Company Confidential
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DPI Reporting for IMS and Non-IMS Services
Policy
Information Base
P-CSCF
Conferencing
Email,
Email,
IM,Web
Web
Enterprise Apps
Email, Ent. Apps
Music
Download
P2P Video /
Video
Download
Policy
Decision
Point
DPI
Broadband
Access
DPI
Streaming
Video
Email, Web
Music
Download
Call/Session Control
Function
Radio Access
Network
Multimedia
Conferencing
S-CSCF
IP QoS
Core Network
IMS-SIP
Application
Services
Non-IMS
Application
Services
Streaming
Video
Track, Report, Analyze
Improve Services, Operations and New Service Development through deep packet
inspection (DPI) for all traffic flows by application
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Operational reporting – Uncover use of core and access network resources. For each subscriber, specify
applications to track for usage distribution, bandwidth utilization, call minutes, call/flow quality
Marketing and service development reporting – Measure call quality for each application for all
subscribers. Provide metrics for billing, service development and improvement
Generating call detail records (CDR) – Track traffic and report CDRs for each application flow for postand pre-paid plans. Group CDRs by sets of applications per subscriber and apply rating charge
Ellacoya Networks Company Confidential
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Improve Services, Operations and Marketing
Active Subscribers
By Application
Total Bandwidth Use By
Application
Application Use for a
Specific Subscriber
VoIP Quality
Reporter
DPI
Any P2P?
Top
Apps?
SLAs
OK?
MOS?
Ensure adequate level of service for all subscribers and sessions. Monitor
network and respond to operational needs
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Determine profile for each application
Uncover bandwidth and application consumption per subscriber
Determine file transfer bandwidth levels for email, P2P downloads, HTTP traffic
Monitor existing quota-based services and develop better revenue
generating service plans
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Implement flexible quotas based on event type, application type, uplink/downlink
bandwidth or off-net and on-net usage
Guarantee high quality VoIP
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Monitor call quality, users with VoIP services and top VoIP destinations
Ellacoya Networks Company Confidential
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Application Intelligence for Wireless and Broadband Edge
Policy Mgmt, Admission Control, OSS
GGSN/PDSN
IP EDGE
ROUTER
• Inspects packets in real time at up to 10
GigE rates
• Classifies applications through
signature detection
• Implements service provider policies to
enforce bandwidth and QoS
• Measures VoIP call quality
• Counts usage; provides usage records
To Call/Session
Control Function
To IP QoS Core
Network and IMS
and Non-IMS Apps
Deep Packet Inspection (DPI)
Use common policy decision infrastructure for SIP-IMS and non-IMS compliant
applications
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Implement session gates from service provider and/or remap TOS parameters
Supplement wireless and broadband access network to track all SIP-IMS and nonIMS compliant session flows
Replicates (mirrors) any application or subscriber session in real-time
Interfaces with OSS for authenticating subscribers, provisioning service tiers, ondemand services, usage quotas, and usage billing
Provide hooks for service data flow filters for different charging treatment¹ - track
sessions based on IP 5 tuple and carrier-defined application signatures
1 Source: “All-IP Core Network Multimedia Domain: Service Based Bearer Control-Stage2”, 3GPP2
X.S0013-013-0, sec. 6.2.2
Ellacoya Networks Company Confidential
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Enhancing IMS – 3GPP
Policy
Information Base
P-CSCF
Call/Session Control
Function
Policy Decision Point
Go (COPS-PR)
IMS-SIP
Enabled
Device
Radio Access
Network
GGSN
Broadband
Access
IMS-SIP
Application
Services
COPS
DPI
Policy Enforcement Point
Policy Decision
Function
DSLAM
CMTS
FTTx
S-CSCF
IP QoS
Core Network
RACS
Non-IMS
Application
Services
NASS
DPI allows GGSN to become highly application aware
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Detect, monitor and report on all application flows per subscriber (IMS and non-IMS)
Correlate available IMS Charging Identity (ICID) for all flows
Generate all Call Detail Records to supplement data from GGSN to determine accurate billing for any
service type contract – metered, quota-based, post-paid, pre-paid
DPI acts as Policy Enforcement Point for Pre- or Non-SIP-IMS signaling flows
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Detects non-IMS signaled applications such as Web services, Email, Music download, Video and
interrogates Policy Decision Point for any policy or signaling request (eg. QoS through RSVP)
Implements gating function delivered over COPS and possibly over Go (COPS-PR)
Opens extension of Policy Information Base to support policy decisions per subscriber for Video,
Download Music, Business Applications, Email and other non-IMS or pre-IMS applications
One policy infrastructure for IMS, Pre-IMS and Non-IMS applications
Ellacoya Networks Company Confidential
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Enhancing IMS – 3GPP2
Policy
Information Base
P-CSCF
Policy Decision Point +
Charging Rules Function
Tx
Ty /
COPS
IMS-SIP
Enabled
Device
Radio Access
Network
PDSN
Call/Session Control
Function
Broadband
Access
IMS-SIP
Application
Services
Tx
DPI
Policy Enforcement Point + Traffic Plane
Function (Application Gateway)
Policy Decision
Function
DSLAM
CMTS
FTTx
S-CSCF
IP QoS
Core Network
RACS
Non-IMS
Application
Services
NASS
DPI acts as policy enforcement point / application gateway for specific flows using Ty
interface (under specification X.S0013-012) and:
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Tracks all application flows including non-IMS services and uses existing Policy Decision Point and
Policy Information Base for policy control
Allows one policy infrastructure for IMS, Pre-IMS and Non-IMS applications
Applies charging rules from PDP for offline and online charging and generates Call Detail Records
Correlates any IMS Charging Identity (ICID) for all flows
As Traffic Plane Function, applies filters based on IP 5 tuple and/or apply additional packet inspection
that maybe defined by the PDP and its Charging Rules Function
Ellacoya Networks Company Confidential
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Enhancing IMS – IETF / ETSI NGN
Policy
Information Base
P-CSCF
IMS-SIP
Enabled
Device
Radio Access
Network
S-CSCF
Core IMS Function
Policy
Decision
Point
(Call/Session Control
Function)
IMS-SIP
Application
Services (ASF 1&2)
GGSN /
PDSN
NASS
RAC-F
DSLAM
CMTS
FTTx
Broadband
Access
Re
Service Policy
Decision Function
IP QoS
Core Network
Non-IMS
Application
Services
DPI
Resource Control
Enforcement Function
DPI enforcement of policies as Resource Control Enforcement Function. Provides
application awareness to RACS and IP Edge Router and:
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Detects, monitors and reports on all application flows per subscriber (IMS and non-IMS)
Deploys gating function delivered over Re (Reference point e interface) from the Service Policy Decision
Function (SPDF) to implement quotas in real time. Policy could be downloaded during user attachment.
Detects non-SIP signaled applications such as Web services, Email, Music download, Video and could
signal SPDF to implement any policies. This signaling mechanism is un-defined as of end of 2006.
Generate Call Detail Records to determine accurate billing for any service type contract – metered,
quota-based, post-paid, pre-paid
Opportunity for one policy infrastructure for IMS and Non-IMS applications
Ellacoya Networks Company Confidential
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Scenario 1: Wireless Access Logical Call Flow
Policy
Information Base
Policy Decision Point +
Charging Rules Function
Interrogate /
implement
policies
IMS-SIP
Enabled
Devices
Radio Access
Network
Access
request for
video mail
P-CSCF
Tx
Ty /
COPS
PDSN
Tx
Call signaling for
service access
S-CSCF
Call/Session Control
Function
•Classifies applications
•Counts usage
•Provides CDRs
•Measures VoIP quality
•Limits unauthorized
traffic (eg. P2P)
DPI
Policy
Enforcement
Point
+ Traffic Plane
Function
IMS-SIP
Application
Services
Service connection
with policy
enforcement
IP QoS
Core Network
Non-IMS
Application
Services
PDSN initiates any service based bearer control query. PDP sends
over user QoS policies and charging rules.
SIP-IMS signaling continues with CSCF cloud to authorize access
DPI captures session flows for SIP-IMS applications
 Tracks call session flow, generates call detail records and implements any
assigned quotas
 Similar functionality with 3GPP networks
Ellacoya Networks Company Confidential
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Scenario 1: Wireless Access Logical Call Flow – Pre/Non-IMS
Policy
Information Base
Policy Decision Point +
Charging Rules Function
P-CSCF
Tx
Interrogate /
implement
policies
IMS-SIP
Enabled
Devices
Radio Access
Network
Access request
to Ebay.com
Ty /
COPS
PDSN
Tx
S-CSCF
Call/Session Control
Function
IMS-SIP
Application
Services
•Detects non-IMS app
through signatures
•Determines policy
•Implements quotas
•Counts usage, flows
•Provides CDRs
DPI
Policy
Enforcement Point
+ Traffic Plane
Function
IP QoS
Core Network
Non-IMS
Application
Services
Service connection
with policy
enforcement
DPI requests policy action for Pre-IMS, Non-IMS services
 DPI captures application request and sends it over Ty interface to PDP. PDP
responds with QoS policy and any charging function
 DPI implements QoS policies, shapes traffic and manages quotas in real time
 User connects to Non-IMS or Pre-IMS application while DPI measures call
session and provides call detail records
 Similar functionality with 3GPP networks
Ellacoya Networks Company Confidential
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Scenario 2: Broadband Access Logical Call Flow
P-CSCF
Attach User /
Assign IP Address
Call signaling for
service access
S-CSCF
Core IMS Function
(Call/Session Control
Function)
Service Policy
Decision Function
IMS-SIP
Application
Services
NASS
DSLAM
CMTS
FTTx
Interrogate /
implement
policies
RAC-F
Broadband
Access
User
initiates
access to
IMS carrier
portal
Re
•Classifies applications
•Counts usage
IP QoS
•Provides CDRs
Network
•MeasuresCore
VoIP quality
•Limits unauthorized
traffic (eg. P2P)
DPI
Resource Control
Enforcement Function
Service connection
with policy
enforcement
Non-IMS
Application
Services
NASS initiates Access-Profile-Push to inform RACS of user request
User can request IMS application by initiating SIP-IMS signaling
DPI captures flows for IMS service sessions
 RACS decides on policy and requests IP edge router or DPI to install policy.
Possible policy implementation during initial attachment of user to the network
 DPI captures application session flows, applies policies and quotas in real time
and generates Call Detail Records
Ellacoya Networks Company Confidential
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Scenario 2: Broadband Access Logical Call Flow – Pre/Non-IMS
P-CSCF
Attach User
Assign IP Address
Interrogate for policies
DSLAM
CMTS
FTTx
User initiates
access to
Salesforce.com
IMS-SIP
Application
Services
NASS
RAC-F
Broadband
Access
S-CSCF
Core IMS Function
(Call/Session Control
Function)
Re
Service Policy
Decision Function
Accept
policies
•Detects non-IMS app
through signatures
•Could identify IP
policy
QoS
•Could implement
Network
quotas in Core
real time
•Counts usage, flows
•Provides CDRs
DPI
Resource Control
Enforcement Function
Non-IMS
Application
Services
Service connection
with policy
enforcement
On current spec and latest draft ETSI TS 182 019 V0.4.1 (2007-02), policy can be
supplied by RAC-F during user attachment to network (p 53)
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NASS signals RAC-F for any policy requirements
DPI can implement policy for Non-IMS services. It could:
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Accept any policies from RAC-F over Re (reference point e, currently undefined) during
user attachment to network
Capture user request for HTTP, HTTPS, XML applications and enforce quotas and shape
traffic flows
Track session flows and generate Call Detail Records
Ellacoya Networks Company Confidential
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Conclusion – Improving the Rules using Ellacoya DPI
SIP IMS Services
+
Analyze and enable new service
models based on application type,
event and user type
Provide application granularity to
implement policies and quotas for
IMS and Non-IMS applications
Use a common policy decision
infrastructure for SIP-IMS, Pre-IMS
and non-IMS applications
Prevent unwanted traffic from unmetered access to IP QoS core
backbone
Create incentive for narrowband
customers to switch to richer
broadband services
Ellacoya Networks Company Confidential
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Ellacoya DPI for IMS
Thank You!
Ellacoya Networks Company Confidential
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