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3 Copyright © 2013 Tech Mahindra. All rights reserved.
Agenda
Challenges Faced by Service Providers
Evolution of Wi-Fi Offload
Carrier Wi-Fi – Trusted Wi-Fi Offload Over S2a GTP
TechM’s Mobile Data Offload Solution: SaMOG
Use Case Scenarios and Key Differentiators
Business Case Illustration
TechM IPRs
References
4 Copyright © 2013 Tech Mahindra. All rights reserved.
4 fold increase in 3G
devices and 1000M 4G
devices by 2017
Data Explosion
Target ROI yet to be realized
from 3G Investments
Transformation to 4G network
in progress
Increase 3G Data
Capacity (in terms of
eNodeB, RNC, SGSN,
GGSN, other network
elements and Spectrum)
Invest in 4G Infrastructure
Additional investment will
push ROI target points
further which may not be
tenable
Fresh CAPEX
investment in 4G and
scrapping 3G investment
without meeting targetted
ROI. Need of an
Alternative
Solution which:
Has No/Negligible CAPEX Delivers better QoE Brings Additional Revenue by offering
Wi-Fi Hotspot Services with Carrier
Wi-Fi Offload Solution
Global Mobile
Devices &
Connections
by 2G,3G&4G
Mobile Data
Traffic Estimates,
2012-17
Mobile Data Traffic Offload
Estimates, 2012-17
Challenges Faced by Service Providers
5 Copyright © 2013 Tech Mahindra. All rights reserved.
Wi-Fi Offload Vs Small Cells
Operates in unlicensed spectrum.
Infrastructure costs (chipsets cost, access
points, SaMOG boxes) are minimal
Operates in licensed spectrum.
Infrastructure costs, although lower compared
to installing a cell tower, is still substantial and
also require additional spectrum.
Wi-Fi Offload Small Cells
The TCO of building Wi-Fi networks is allegedly around a tenth of that of 3G/4G network equivalents.
Wi-Fi Offload required negligible investment from MNOs or service providers – compare this to the millions of dollars often required to purchase licensed bands.
Thus, the Wi-Fi and mobile industries are on convergent paths although it is likely to take a few years before the two technologies will be operating with end-to-end seamlessness.
6 Copyright © 2013 Tech Mahindra. All rights reserved.
Evolution of Wi-Fi Offload
ePDG,
TTG Yesterday
SaMOG Today
MAPCON,
IFOM Tomorrow
WLAN AP PGW
(possibly unsecure) WLAN AP & Backhaul a priori owned by any
provider
ePDG/PDIF
AAA
SWx
S2b: PMIP
HSS
IPSec: 3GPP/2 VPN
ISSUES in Yesterday’s Technology:
• IPSec/IKEv2 required on UE (Client had
to be downloaded)
• Battery drain effect on UE and intensive
CPU processing.
• IPSec overhead & associated packet
fragmentation on WLAN air interface
• Poor user experience with Latency
associated with tunnel establishment for
short-sessions (e.g. MMS access)
• Multiple tunnels one for each service
Yesterday’s 3GPP/2 standard for access to EPC over non trusted access
(secure) WLAN AP & Backhaul
AAA
SWx
S2a: GTP
Radius
802.11i
Single tunnel / AP
Today’s solution (fat-pipe model) that overcomes standard issues
PGW1
non-3GPP
access
3GPP
access
PGW2
PDN1
UE
PDN2
PGW1
non-3GPP
access
3GPP
access
PDN1
UE
PDN connection #1
PDN connection #2
flow #1
flow #2flow #3
PDN connection #1
Multi access PDN connectivity (MAPCON) IP flow mobility (IFOM)
7 Copyright © 2013 Tech Mahindra. All rights reserved.
Carrier Wi-Fi – Trusted Wi-Fi Offload Over S2a GTP
SWx
(Diameter)
3rd Party HSS
PGW / GGSN S2a
(GTP-C) GRE/IPSec
S2a
(GTP-U) Ta (Radius)
3G / LTE Network
SaMOG
Internet
Internet
AAA
3rd Party
AP/AC
Client
(UE)
S6b
802.11i
PCRF
Gx/Gy
SGi
Wi-Fi Network
ANDSF S14 1
2
3
4
5
7
6
1 Leveraging Improved WLAN Security (802.11i)
2 Policy Based Offloading
3 No IPSec Low Latency, No Overhead, No Fragmentation, Less Battery Consumption
4 Ability to offload to Internet Directly (Not through EPC Core)
5 Packet Core Anchor described in 3GPP R11
6 No need to support an ePDG or HA in the network
7 Seamless Mobility and NSWO
8 Copyright © 2013 Tech Mahindra. All rights reserved.
TechM’s Mobile Data Offload Gateway Solution (SaMOG) &
Partner Ecosystem
Access Point
L2oGRE
Ta (Radius)
SaMOG
802.11i
Client (UE)
WLC EAP
Offload SSID
ANDSF
S14
eNodeB SGW
MME HSS
S6a
PCRF
SGi
S2a
AAA STa
SWx
S5/S8
Local Breakout (NSWO)
PGW
Gx
S1-MME
S1
S11 4G Network
Wi-Fi Network
Internet
Propriety Ownership: TechM
Partner
Pre-integrated E2E Mobile Data Offload Solution
9 Copyright © 2013 Tech Mahindra. All rights reserved.
SaMOG – S/W Architecture & Specifications
( SaMOG Control Plane)
SaMOG - C APP
Radius
UDP
OAM
Agent
UP instance n
S aMOG - U APP
GRE
IP
OAM
manager
UP instance 1
UP instance 2
DHCP / Radius
L2oGRE
S2a
Ta
SaMOG User Plane
GTP - c
UDP
GTP - u
Radius DHCP
(SmartEMS)
Highly scalable solution with separate control & data plane
Interoperability tested with major UEs, APs, AAA & Policy
management
KEY SPECIFICATIONS
STANDARDS
COMPLIANCE
Trusted WLAN Access using
3GPP TS 23.402 (802.1x / EAP),
R11
AUTHENTICATION
PROTOCOLS
EAP-SIM, EAP-AKA, EAP-AKA‟
AAA 3GPP AAA (RADIUS, RADIUS to
DIAMETER) Proxy
INTERFACES
SUPPORTED
S2a – GTP Based interface to
PDN-GW
STa – Diameter based interface to
3GPP AAA Server
Ta - L2oGRE based interface to
Access Point / WLAN Controller
USER PLANE
ACCELERATION
Intel DPDK and NPU Based
Packet acceleration
HIGH AVAILABILITY 1:1, Hot/Standby for Control Plane
1:1 Warm Standby for User Plane
PLATFORMS
SUPPORTED
X86, POWER PC and MIPS
Processor Architectures
Linux
CAPACITY 16000 Access Points
Virtualized Software Only Solution
for elastic scaling
ELEMENT
MANAGEMENT
Integrated with TechM EMS
FCAPS
10 Copyright © 2013 Tech Mahindra. All rights reserved.
Migration from TTG/ePDG to SaMOG
3rd Party HSS
GGSN/PGW
3G / LTE Network
SaMOG
Internet
AAA
Client
(UE)
PCRF
TTG/ePDG
Wi-Fi
Network
IP-Sec 802.11i
11 Copyright © 2013 Tech Mahindra. All rights reserved.
SDN for Offload Solution
Decentralized data plane for independent scaling & User Experience
Integrated Core & Transport networks for Cost Reduction
OpenFlow integration in Access Points and WLC for e2e OF based control
WLAN Gateway Signaling Plane as an application on SDN Controller
Signaling Plane deployed as an SDN Application
Deployment of Forwarding Plane
on OF enabled OCP Commodity
Hardware
Service Chaining for features (like Charging) not
supported in OF Specifications
Cloud Based WLC and WLAN Gateway as SDN Applications
OF enabled thin Access Points
Integration of Cloud Based
WLC and WLAN Gateway
Applications
OF enhancements for metering &
DPI
12 Copyright © 2013 Tech Mahindra. All rights reserved.
Use Case Scenarios
Indoor Areas
• Most wireless data traffic
comes from indoor spaces
like offices, café, restaurants
• Offloading here can delay or
even avoid the need for
adding towers to high-density
service areas.
Outdoor Venues
• High Quality Data Services
for Subscribers
• Opportunity for incremental
revenue from ad-hoc users
• Will come at around 10% of
the cost of a new cell or cell-
on-wheels.
Large Area Hot Zones
• Transit corridors and large
urban downtown settings
challenge wireless
performance.
• Our solution leverages the
existing investments (like cell
sites).
13 Copyright © 2013 Tech Mahindra. All rights reserved.
Key Differentiators
Early adopter of the evolving 3GPP specifications
Early adopter of the evolving 3GPP specifications.
Highly scalable virtualized solution; Can be easily
scaled to support hundred thousands of
subscribers.
Future proof - SDN ready offload solution
Architecture to utilize multi-core processor
architectures
HW agnostic implementation that can be deployed
on any Carrier-Grade platform
Integrated EMS for FCAPS
Applications & Services from TechM – Leading SI
Experience in developing carrier grade products
for service provider networks
Dedicated practice for 3G/4G and Wi-Fi Testing
serving both equipment vendors and service
providers.
„One-Stop Shop‟ Offload Solution
A Best In Class solution with a partner eco-system
consisting of leaders in the ANDSF (Policy
Server), AAA and PCRF space
14 Copyright © 2013 Tech Mahindra. All rights reserved.
Business Case Illustration
Additional New
Customers
Greater Content
Consumption
Enhanced Customer
Experience Increased Revenues
Value for Service Providers
Cost Savings
Location Based Services
316 450
0
200 352
18
668 668
0
200
400
600
800
1000
1200
1400
1600
Cellular Wi-Fi Network
Revenue
Capex & Opex
Revenue Share
Profit
Seamless
Capacity
Augmentation
Offload solution serves as a
means of improving coverage
and yet provides seamless
data connectivity between
Cellular to Wi-Fi Network and
vice-versa
Cost
Efficiency
Wi-Fi Offload is a cost efficient
alternative to macro networks
in addressing the challenges
thrown by data explosion
without significant investments
in CapEx/Opex
15 Copyright © 2013 Tech Mahindra. All rights reserved.
TechM Intellectual Property Rights
TechM IP
eNodeB
Access Point
Client (UE) Applications
Offload SSID CE Access
Ethernet
Network
DC Fabric
MME
SGW PGW
SaMOG PCRF
SDN Applications
(LB, SFL, Analytics,..)
SDN Controller
Smart
NMS
x-CSCF
Femto
Gateway
eNodeB Simulator
EPC Simulator
Software Defined
Networking
Incubation center for
developing SDN
solutions to address
network challenges.
Provides next
generation flow-based
switching.
Carrier Ethernet
Low cost MPLS-TP
based Carrier Ethernet
solution for mobile
backhaul
Packet Core
(EPC + IMS)
Compact EPC solution
for niche markets like:
Femto Gateway solution
for LTE small cells
X-CSCF for VoLTE
deployments
Smart NMS
Customizable
Management Solution
for Multi-Vendor, Multi-
Technology & Software
Defined Networks
Integration with Next
Gen OSS
16 Copyright © 2013 Tech Mahindra. All rights reserved.
References
Whitepaper : Wi-Fi Offload – The Yesterday, Today and Tomorrow -
http://www.techmahindra.com/en-
US/wwd/industries/Pages/Telecom/Resource_Center/default.aspx
Product Engineering Solutions @ Tech Mahindra -
http://www.techmahindra.com/en-
US/wwd/industries/Pages/Telecom/Product_Engineering/Solution.aspx
Contact us - <[email protected]>
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17 Copyright © 2013 Tech Mahindra. All rights reserved.
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