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Welcome!

October 4

Mobile Data Offloading Optimization

November 1

Core Network Optimization: The Control

Plane, Data Plane and Beyond

December 6

Optimizing Value Added Services (VAS) for

Greater Revenue Generation

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Mobile Data Offloading Optimization

Presenters:

Jeff Sharpe, Sr. Product Marketing Manager

Renuka Bhalerao, Principal Systems Architect

Michael Thomas, Principal Systems Architect

October 4, 2012

Today’s Topic and Presenters

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Radisys Solutions

LTE & 3G Macro & Small Cell SW RRM, SON, OA&M & Protocols

Silicon Integration

COTS SEG Solution

Carrier-Grade Turnkey SEG

Flexible Deployment Options

Small Cell Gateways

ATCA Systems

Optimized Trillium SW

Complete Product Portfolio

Customized, Optimized & Deployed with Radisys Services

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Small Cell

IP

IP

Backhaul

Small Cell GW

Carrier

Wireless Core

Network SEG

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Agenda

Mobile Data offload business case

Possible offload approaches

Small Cells and WiFi Offload

Data offload optimization from access to core

Key Opportunities / Solutions

• Security for WiFi & Small Cell

• Handling increase in Network Signaling Load

Final thoughts

Q&A

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Why Offload: Business Case for Operators

2009 2010 2011 2012 2013 2014

1 billion

Services

0

5

10

15

20

25

2008 2009 2010 2011 2012 2013 2014 2015

Mobile Laptop

Smartphones

Mobile Internet Access

Mobile Internet Traffic [ExaByte/year]

Devices

Technologies

2G 3G LTE

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Key Challenges For Operators

• Challenge solved by small cell + WiFi integration

• Low cost offload option

• Handle AAA & Network security

Base station capacity & Coverage

• High OpEx linked to capacity carried

• Move to all-IP helping but still a high cost

• Data Offloading to reduce volume of traffic backhauled

Backhaul cost & bandwidth

• Most core networks becoming overloaded and need investment

• Increasing signaling load across the network

• Need Scalable solutions

• Major network security concerns

Core network capacity

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Aspects of Mobile Data Offloading

Packet Core

2 Internet

3

Network

Offload

Gateway

(SIPTO)

P-GWY

…

Small Cell

WiFi

H(e)NB

Access

1. MacroCell Relief

• RF access with WiFi, H(e)NB & Small Cell

2. Local IP Access (LIPA)

• Allows direct IP access

3. Packet Core Optimization

• Offload in the RAN to reduce traffic with Network Offload Gateways

LIPA

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Data Optimization Through Smart Network Offload Gateway

Flat All-IP Networks

Emergence of HetNets

Increase in Mobile Data

Usage

Need to Differentiate

Smart

Gateways

3GPP Specified Traffic

Offload Function (TOF)

at Iu-PS

• Operator managed traffic offload

• Offload heaviest traffic before it hits the

core network

• Alignment with lawful intercept / CALEA

• Offload while ensuring compliance

• Edge functionality

• Deliver capability as value add to

gateways deployed at the edge of the

network

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LIPA: Local Data Optimization

eNB

MME / S-GW MME / S-GW

eNB

eNB

S1

S1

S1

S1

X2

X2

X2

E-UTRAN

HeNB HeNB

HeNB GW

S1 S1

S1 S

1

HeNB

S1S1 S5

MME / S-GW

S1

New Function – L-GW

Standardized LIPA

Enterprise / Residential

HeNB

LGW

SEG

HeNB

GW

EPC

LAN

S1

MME

S1- U

S5

SGi

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Small Cells and WiFi – Complementary

WiFi is a critical complement of small

cells

• Operators see a need to integrate WiFi with their pico / metro cells

Smartphones are now supporting WiFi

• Short range requires too many sites w/ WiFi alone

• Concerns of poor performance for unmanaged WiFi

WiFi alone may be insufficient for carrier

deployed WiFi

• Increase usage, value

• Minor impact on CapEx

• TCO dominated by per site, power, backhaul

Multi-mode dramatically

improves economics

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Multi-Mode: WiFi and Small Cell in a Box

•TR-69 based unified management

Operator Management of both small cell

& WiFi AP: Residential & open access

•Similar to Enterprise Femto controller

•Small cell based Data Offload extended to multi mode AP

Local “Gateway”

Function for Integrating small cell &

WiFi Networks

•Seamless Handovers: Macro to Femto to Local WiFi

•Flow Mobility

•Flow Splitting

Value added functions for

•Similar to Femto & Enterprise IT networks

Service Continuity

across small cell & WiFi Networks

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Policy Enforcement solutions supporting Broadband

Traffic segregation, mobility across available networks

and aggregation to service provider

Bandwidth Management

Functions & Policy (in service provider

network)

Context-Aware Policy

Enforcement

(Location, battery life, speed,

application requirements, cost, etc)

3G

WiFi

LTE

Bandwidth

Management

Client

Flow

Segregation

& Mobility

IP layer

Aggregation

& Protocol

QoS and

Analytics

Policy

Engine

Example of Operator-Driven, Access-Side Bandwidth Optimization Function

IP Flow Segregation (different flows on different networks)

IP Flow Mobility (moving an IP flow across networks)

Bandwidth Aggregation across multiple networks

Policy Control

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Poll Question

Which of the following technologies are being pursued

by mobile operators for mobile data offload? (Select all

that apply)

1. WiFi Offload

2. Small Cells

3. SIPTO/LIPA

4. Offload Gateway

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3GPP Standards based solution • Ensures compatibility to large number of devices and easier

integration in multi-vendor networks

Operator benefits • Network cost reduction

• Selective traffic offload to Wi-Fi

• High performance indoor coverage and capacity

• Increased customer satisfaction

• Gain visibility and control for Wi-Fi traffic

• Allows to integrate Wi-Fi access into packet core and re-utilize its existing functionality and services

End user benefits • Faster data connections and enhanced

experience

• Seamless and secured access to services via mobile and Wi-Fi networks

• Extended coverage

Offload selected subscribers from cellular to Wi-Fi access

Utilize services of existing Packet Core networks for both access types

Internet

Mobile Core

Services

Services

2G/3G/LTE

Wi-Fi

Benefits of Wi-Fi Offloading

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Mobile Security Network Transition

TWG VoLTE, Roaming, IMS,

Shared Infrastructure

4G/LTE

ePDG

Carrier Wifi

3G TTG/PDG

WiFi Offload

2015

2014

2013

Now

Market Sizing

Carriers are increasing their

usage of Small Cell and WiFi

Offload for consumer data

services

Applications such as LTE-A,

LTE-VoIP will require more

access to carrier’s network via

Small Cell and WiFi offload

Mobile networks will become

more susceptible to intruders

and attacks

3GPP Standards are in place for

Mobile Network Security

More carrier-grade security

products will be required with

the highest performance

available

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Integrated WiFi and 3GPP network 4G/LTE Based

P-GWY

AAA S2b

Internet (Untrusted)

4G (Trusted)

WiFi Based

Optimization

S-GWY

S1 S5

AAA

ePDG

IKE/IPSec (SWu)

Internet /

Operator Services

STa/SWa

Key properties

• Introduces trusted WiFi access with access into

EPC… cellular credentials reused… no IPSec at UE

• Includes mobility support between WiFi & 3GPP

access for cases where WiFi traffic is sent to EPC

• Supports internet/local IP access at WiFi network as

well as access into EPC

Key Use Cases:

• Support carrier deployed WiFi

• Support roaming partners that support

trusted WiFi access

UE

SWm Trusted

Access

S2a

eNB

WiFi

AP

MME

HSS

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Key Risks and Impacts

Security Impacts

• More mobile authentication resulting from mobility

• Small cells whether WiFi or cellular based are placed into

environments where they are exposed to theft & tampering

• Both network control and user communications need protection

considering transport may not be sufficiently secure

• More interfaces to secure both within operator & WiFi network and

across operator networks

Increased signaling load and Mobility

• Growth of LTE networks drives more signaling traffic in network

• More mobility events to process amongst WiFi, Small Cells, and

Macro Cells… cells ranging from 10s of meters to 500m s

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WiFi & Small Cell Threats Combined

P-GWY

AAA

S2b

Untrusted IP

Network

Backhaul

S-GWY

SWu

WiFi

AP

S1u S5

AAA

ePDG

UE

Internet

Threats at various points--- many common threats between WiFi & Small Cell

A: Mobile Device: Compromised device meant to attack small cell/APs

B: Air Interface: Impersonate legitimate access (AP/small cell), attack weak over the air security (AP)

C: Exposure in public placement: Theft of APs/small cells, replacement on site of AP/small cell with

hacked s/w, attack communication interfaces (physical cabling at site)

D: Transport/Network communications: Impersonate APs and/or subscriber devices, snoop subscriber

packets, snoop network control packets, alter network control &/or subscriber communications

A B

Macro Cell

SEG

C

MME

D

HSS Small Cell

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Types of WiFi Access

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Untrusted with LTE/EPC

SWm DIAMETER Interface:

• Authentication using EAP-AKA or other on board credentials

• Subscriber & policy profile access

ePDG session management:

• Provide access into EPC

• Mapping between IPSec and GTP traffic

• Session supervision

S2b interface: GTPv2 & PMIP

• GTPv2 & PMIP for P-GWY access

• Interwork IPSec to GTP/PMIP

SWu Interface

• Attach/Detach & Mobility

• Authentication (IKEv2 w/EAP-AKA)

• IPSec to protect user traffic

Untrusted LTE WiFi Offload

ePDG

Untrusted

WiFi

UE

P-GWY

SWu S2b

GTPv2 /

PMIP

SWm

Operator

AAA

Suited to cases of residential or enterprise WiFi where

communications between WiFi network and packet core are untrusted

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Trusted WiFi Authentication

Wifi

EAP-AKA

802.1x

UE

WiFi AAA

WiFi Mobile

Access

Gateway

Trusted WiFi Authentication

Operator

AAA

Internet

STa/SWa DIAMETER Interface:

• User authentication reusing cellular credentials

(EAP-AKA/EAP-AKA’)

• Subscriber & policy profile access for WiFi access

• Authorization for access to Internet

WiFi Security

• Reuse WiFi authentication procedures

(WPA2/802.1x)

• Secure WiFi air interface (WPA2)

WiFi Mobile Access Gateway

• Support mobility within WiFi network

• Aggregation

• WiFi network access to Internet/IP network

STa/SWa

Suited to commercial WiFi access cases where the

service is Internet Access

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STa DIAMETER Interface:

• Support authentication reusing cellular credentials

• Subscriber & policy profile access for WiFi access

• Authorization for EPC access

WiFi Security

• Same as trusted WiFi authentication

WiFi Mobile Access Gateway

• Support mobility within WiFi network

• Aggregation

• WiFi interworking point to operator

TWG (Trusted Wireless Gateway)

• Operator interworking to WiFi Network

• Policy enforcement

Trusted LTE WiFi Offload w/EPC Access

Trusted

Wifi

TWG

STa

EAP-AKA

802.1x

UE

Operator

AAA

WiFi

AAA

WiFi Mobile

Access

Gateway P-GWY

S2a

GTP/

PMIP

PMIP or

TEP

Trusted WiFi Access with EPC Access

Suited to cases of mobile operator deployed

WiFi and trusted roaming partner WiFi

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Addressing Signaling Load Challenges

‘Always on’ devices and LTE data speeds

=> More control traffic

Operators have begun to see the

signaling traffic growth and impact on

network

Next generation designated Signaling

protocol for All IP networks =>

Diameter

Many nodes impacted … MME, AAA,

HSS, and PCRF (DIAMETER-heavy

elements)

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But How???

Efficient management and scaling of signaling traffic

Need for diameter routing agents and proxies to distribute traffic

DIAMETER & SCTP Scaling via multi threading and fast path

Diameter is Pervasive!

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Radisys Diameter Difference

1) Unparalleled Performance

• Over 60K messages per second per blade

• Exceeding performance demands of today’s AAA

networks

2) Comprehensive Feature Set

• All LTE, ETSI, and IMS interfaces supported

• SDK for rapid application development

3) Deployment Proven Product

• Multiple Tier 1 design wins including EPCs

• Over 4 years of product shipments

Markets

Leading

Diameter

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The Trillium SCTP Fast Path Difference

Groundbreaking performance

• Achieved through advanced hardware + software

optimization

• Solving critical problems in LTE and small cell networks

Deployment proven software

• Built from industry leading Trillium protocol IP

• Over 20 years of successful deployments

Turnkey solution

• Hardware and software from a single source

• Integrated, tested and packaged system

Capability Uniquely

Available from

Radisys!

> 1M aggregate (inbound/outbound) SCTP packets per second

65,536 dual-homed associations with 10 inbound & outbound streams

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Final Thoughts

Data offload - key to handle

increasing data demand

Security is required for Mobile

Offloading

Protocol Solutions

• High performance protocol

implementation

• Multi-threaded multi-core adapted

• Deployment proven

• Extensively Interoperability tested

and field hardened

• Standard APIs for customization of

requirements

Radisys Provides

• Complete small cell solution w/

integrated WiFi

• High capacity Hardware

platforms to scale functions

• Security Network elements

• High performance

SCTP/DIAMETER solutions…

• Protocol solutions addressing

new interface demands

• Professional services & pre-

integration

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Q&A

Contact us!

Jeff Sharpe

jeff.sharpe@radisys.com

Renuka Bhalerao

renuka.bhalerao@radisys.com

Michael Thomas

michael.thomas@radisys.com

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