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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
2
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
3
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
+
Small Cell
IP
IP
Backhaul
Small Cell GW
Carrier
Wireless Core
Network SEG
4
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
5
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
6
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
7
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
8
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
9
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
10
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
11
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
12
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
+
13
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
14
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
15
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
16
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
17
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
18
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
20
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
21
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
22
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
23
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)
24
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!
25
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
26
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
27
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
28
Q&A
Contact us!
Jeff Sharpe
Renuka Bhalerao
Michael Thomas
~Please fill out our short survey~
THANK YOU FOR ATTENDING!
To register for upcoming webinars:
http://go.radisys.com/optimizing.html