Carrier WiFi & Seamless Mobility to 3G/LTE networks · Introduction 2. Carrier WiFi ... 3GPP IP...

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ALCATEL-LUCENT — PROPRIETARY AND CONFIDENTIAL

COPYRIGHT © 2015 ALCATEL-LUCENT. ALL RIGHTS RESERVED

Carrier WiFi & Seamless Mobility to 3G/LTE networks

Nardus le Roux Mar 2015

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Agenda

1. Introduction

2. Carrier WiFi architectures

3. Seamless Mobility between 3GPP and non-3GPP networks

4. Conclusion

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Introduction From Wi-Fi as best-effort commodity to Wi-Fi as radio technology to access the Carrier Core

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WIFI UBIQUITY

Key Observations:

• Continual, rapid growth in the number of WiFi-enabled devices Driven primarily by Smartphones, Tablets

and Notebooks.

• Amount of data transferred over WiFi by smartphones is substantially more than over cellular.

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Q32014 announcements reinforce the dominance of Wi-Fi

backhaul

access

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Vehicle

Routers

Outdoor

Metrocells

The silos of a fragmented Wi-Fi industry

Home

Electronics

Public

Hotspots

Enterprise

CPE

1 Wi-Fi Password

per Home

Captive Portal

Credit Card

Room Number

Boingo/iPass

EAP-TLS :

X.509 Certificate EAP-SIM

EAP-AKA

1 Wi-Fi Password

per Vehicle?

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Broadband ISPs

Goal : Carrier Wi-Fi as an integrated Radio Access Technology

Internet

Mobile Network Operators

Mobile Subscription

WLAN

GW

authenticating & instantiating

individual Wi-Fi users

Closed and Open Operator SSID

L2 encaps L2 encaps L2 encaps

Radio planning, beamforming,

monitoring

AAA server

Wi-Fi RAT Included

Seamless Mobility

PGW/GGSN

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TWAG L2 AP in Public

Hotspots

CARRIER WI-FI

L2 AP in Homespot

L2 AP/CPE Enterprise

L2oGRE DHCP

Captive Portal & Analytics

Wifi AP

LBO, SIPTO

RADIUS AAA

server

Vision: Carrier Wi-Fi as integrated RAT in heterogeneous networks

HetNet Operators should ensure Service Continuity across the RANs & TWAN

IP/MPLS CORE

PGW/GGSN

IP MOBILE CORE

Border GW

NETWORK MANAGEMENT

IMS/Voice

CDN/IPTV

Enterprise

Datacenter

3GPP CELLULAR RAN

a HetNet Operator should guide the UE to

the best (mix of) access technologies for any

service, at any time and in any location...

Internet

HSS/HLR MME/SGSN

Macro RAN

BTS NodeB eNodeB

Agg/SeGW/SGW

OCS, PCRF, LIG...

2G-3G-LTE

LTE+Wi-Fi Metrocell

LTE+Wi-Fi Enterprise

Small Cells

... with UE Address

Continuity

IPSec

& SeGW

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Carrier WiFi architecture From Wi-Fi as best-effort commodity to Wi-Fi as radio technology to access the Carrier Core

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3GPP Rel. 8 TS 23.401/23.402 Evolved Packet Core architecture

EPC

E-UTRAN MME

SGW PGW

SGSN PDN

HSS

HLR

SGi S5/S8

S11

S1-MME

S1-U DNS

S6a

Gb IuPS

UTRAN

GERAN

S3 S12

S4

S6d

Internet OCS, PCRF, LIG...

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Trusted and Untrusted Wi-Fi plug into it;

IP Mobile Core

EPC

E-UTRAN MME

SGW PGW

SGSN PDN

UE

HSS

HLR

SGi S5/S8

S11

S1-MME

S1-U DNS

non-3GPP

Trusted Wi-Fi

non-3GPP Untrusted Wi-Fi

TWAG

ePDG

SWw

STa

S2a

S2b SWx

S6b

SWm

SWn

AAA

Proxy/Server

S6a

Gb IuPS

UTRAN

GERAN

S3 S12

S4

S6d

Internet

3GDT Gn/Gp

Gn

GGSN

Gr

IPSec

L2oGRE

EAP

Data APN

Data APN

Data APN

OCS, PCRF, LIG...

Anchor point for

inter-RAT IP@

continuity and

hybrid access

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Trusted and Untrusted Wi-Fi plug into it; LBO & SIPTO allow direct PDN access

IP Mobile Core

EPC

E-UTRAN MME

SGW PGW

SGSN PDN

UE

HSS

HLR

SGi S5/S8

S11

S1-MME

S1-U DNS

non-3GPP

Trusted Wi-Fi

non-3GPP Untrusted Wi-Fi

TWAG

ePDG

SWw

STa

S2a

S2b SWx

S6b

SWm

SWn

AAA

Proxy/Server

S6a

Gb IuPS

UTRAN

GERAN

S3 S12

S4

S6d

Internet

3GDT Gn/Gp

Gn

GGSN

Gr

IPSec

L2oGRE

EAP

Data APN

Data APN

Data APN

OCS, PCRF, LIG...

Anchor point for

inter-RAT IP@

continuity and

hybrid access

LBO SIPTO NAT

NAT

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Seamless Mobility between 3GPP and non-3GPP network

for data & voice

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3GPP Multiple Access PDN Connectivity (MAPCON) The UE and/or Servers spread traffic among multiple RAT with different IP@

IP/MPLS CORE

7750 SR WLAN GW & SeGW

PGW/GGSN

Motive AAA

server

WIRELESS PACKET CORE

Border GW

NETWORK MANAGEMENT 5620 SAM

IMS/Voice

CDN/IPTV

Enterprise

Datacenter

Layer 2 Access Points

FIXED AGGREGATION

MOBILE BACKHAUL

2G-3G-LTE

Motive HDM & MDM

LTE-WLAN Metrocell

3G-WLAN Metrocell

L2 AP in Homespot


L2oGRE Tunnel DHCP

IPv4 address A IPv6 address B

Internet

HSS/HLR MME/SGSN


BTS NodeB eNodeB

Agg/SeGW/SGW

ANDSF

MAPCON Policy Rules

OCS, PCRF, LI...

IPv4 address C IPv6 address D multipath

TCP...

no solution for UDP...

0

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3GPP IP Flow Mobility (IFOM) enhanced by Alcatel-Lucent PGW and UE forward packets via the correct RAT for each Policy Rule

A

IP/MPLS CORE

7750 SR WLAN GW

PGW/GGSN

Motive AAA

server


Border GW


IMS/Voice

CDN/IPTV

Enterprise

Datacenter


FIXED AGGREGATION

MOBILE BACKHAUL

2G-3G-LTE

Motive HDM & MDM

LTE-WLAN Metrocell

3G-WLAN Metrocell

L2 AP in Homespot


L2oGRE Tunnel DHCP 1 IPv4 address

1 IPv6 address

Internet

HSS/HLR MME/SGSN


BTS NodeB eNodeB

Agg/SeGW/SGW

ANDSF

IFOM Detection Logic & Policy Rules

Optional IFOM Policy Rules

OCS, PCRF, LI...

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Bonding aka hybrid access – also a dual active radio technology

PGW and UE forward packets via the correct Link for each Policy Rule

B

IP/MPLS CORE

7750 SR eBNG

PGW/GGSN

Motive AAA

server


IMS/Voice

CDN/IPTV

Enterprise

Datacenter

Access Node

FIXED AGGREGATION

MOBILE BACKHAUL

2G-3G-LTE

Motive HDM & MDM

PPP or DHCP (IPoE)

1 IPv4 @ 1 IPv6 @

Internet

HSS/HLR MME/SGSN

BTS NodeB eNodeB

Agg/SeGW/SGW

Detection & Bonding Policy Rules

Bonding Policy Rules

DSL GPON

G.FAST


OCS, PCRF, LI...

ANDSF

CPE

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3GPP Release 12 evolved S2a Mobility Over GTP (eSAMOG) Single active radio technology with WLAN access negotiated by EAP-AKA' & WLCP

C

IP/MPLS CORE

7750 SR WLAN GW

PGW/GGSN

Motive AAA

server


Border GW


IMS/Voice

CDN/IPTV

Enterprise

Datacenter


FIXED AGGREGATION

MOBILE BACKHAUL

2G-3G-LTE

Motive HDM & MDM

LTE-WLAN Metrocell

3G-WLAN Metrocell

L2 AP in Homespot


L2oGRE Tunnel DHCP 1 IPv4 address

1 IPv6 address

Internet

HSS/HLR MME/SGSN


BTS NodeB eNodeB

Agg/SeGW/SGW

ANDSF

TSCM SCM

OCS, PCRF, LI...

3GPP R12 UE

EAP-AKA'

Other APN

Other vMAC@

WLCP

MCM

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Conclusion Carrier WiFi with seamless mobility is deployable today, choose a trusted partner

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Release 11

(2013)

Release 13

(2016)

Release 12

(2015)

3GPP standards and Vendors embracing Trusted and Untrusted Wi-Fi

Release 6-7

(2006-2007)

I-WLAN TTG/PDG

TS 23.234

Untrusted Non-3GPP

Access

Release 8-9-10

(2008-2012)

Trusted Non-3GPP

Access

Multiple Concurrent Connections

IP Flow Handling

Traffic Flow Templates

UMTS Traffic Classes

MAPCON

TWAG (S2a PMIP)

TS 23.402

I-WLAN ePDG

(S2b PMIP) TS 23.402

IP Filters

LTE QCI

IFOM (non-3GPP)

TS 23.261

SAMOG (S2a GTP)

TS 23.402 §16

ANDSF ISMP/ISRP

TS 24.312

ePDG (S2b GTP)

SIM-based auth

NB-IFOM

Hybrid

Access eSAMOG with

IP@ continuity

IFOM+

Vendor-Specific

ePDG+ (S2b GTP)

Incl. EAP-TLS

MDM and ANDSF+ clients with

Vendor-Specific extensions

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Conclusion:

Current solutions for UE IP@ preservation between RAN & TWAN

DEVICE INDEPENDANT

DEVICE DEPENDANT

DUAL

ACTIVE

RADIO

SINGLE

ACTIVE

RADIO

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Multipath

TCP

Only works for TCP

O A.

IFOM

Works for Apple

& Android devices

Only working

solution today for

smartphones/tablets

B. Bonding

aka Hybrid

Access Requires CPE Logic

Only working

solution today for

LTE+DSL throughput

aggregation

C. 3GPP

Release 12

eSAMOG Will require 3GPP R12

compatible devices…

FUTURE

E. Visited

Network

Transfer

Requires new

network Element

D. Home

Network

Transfer

Requires a 3GPP AAA

& has PGW impact

O O P

P

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Carrier WiFi & Seamless Mobility to 3G/LTE networks · Introduction 2. Carrier WiFi ... 3GPP IP...

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Transcript of Carrier WiFi & Seamless Mobility to 3G/LTE networks · Introduction 2. Carrier WiFi ... 3GPP IP...