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Service Provider Wi-Fi - PowerPoint Presentation

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Service Provider Wi-Fi - PPT Presentation

Bill McFarland VP Technology Qualcomm Atheros Outline System capacity discussion 80211u WiFi Hotspot 20 Hybrid LTEWiFi small cells 1000x Capacity Increase Needed 5B cumulative ID: 309150

service hotspot 802 11u hotspot service 11u 802 network device cellular connection ssid information mobile roaming list access 2011

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Slide1

Service Provider Wi-Fi

Bill McFarland, VP Technology, Qualcomm AtherosSlide2

Outline

System capacity discussion

802.11u

Wi-Fi

Hotspot 2.0

Hybrid

LTE/Wi-Fi

small cellsSlide3

1000x Capacity Increase: Needed

5B

cumulative

smartphone sales

estimated for 2012 - 2016

Average

traffic per smartphone nearly tripled in

2011150 MB/Mo, versus 55 MB/Mo in 2010 Over the past five years, AT&T’s wireless data traffic has grown 200X

Exponential growth in mobile data utilizationSlide4

1000x Capacity Increase: Possible!

Number of antennas limited by device size

Spectrum limited by availability, government policy

Interference mitigation difficult, can only go so far

Only big lever is to substantially reduce cell size

But cellular deployment models/economics make increasing the number of base stations by 32x expensive and slow

capacity/user ≈

n  W  log

2

(1+

)/

# users

Signal

Noise

Number of Antennas (4x?)

More Spectrum (4x?)

Mitigate

I

nterference (2x?)

Small Cells!

(32x?)Slide5

Why

Wi-Fi?

The

capacity is

needed,

t

he clients are there

The number of devices connected to IP networks will

be twice as high as the global population in 2015,

up from one networked device per capita in 2010.

Wi-Fi

Enabled

Devices Shipped

2011 MU

2015 MU

Handsets

589

1,219

Tablets

59

262

Mobile

Clients

648

1481

Notebooks,

netbooks, AIOs

242347Other Wi-Fi clients160415TOTAL1,0502,243Source: iSuppli, Q2, 2011 Connectivity Forecast. Other Wi-Fi-enabled clients consists of the following: printers – 41M in 2011, 69M in 2015; digital cameras – 7M in 2011; 24M in 2015; gaming consoles – 40M in 2011, 56M in 2015; handheld gaming – 36M in 2011, 35M in 2015; eReaders – 3M in 2011; 15M in 2015; LCD TVs – 18M in 2011; 180 in 2015; DVD Players/Recorders – 12M in 2011; 29M in 2015; STBs – 3M in 2011, 7M in 2015.

Cisco Visual Networking Index:

Forecast & Methodology June, 2011Slide6

How Do we Make Wi-Fi

a Service Provider Network?

Transparent, hassle free services discovery (802.11u)

Features to enable cellular offload onto

Wi-Fi

(Hotspot 2.0)Seamless operation across cellular and Wi-Fi networks (LTE/Wi-Fi hybrid small cells)Slide7

Wi-Fi Industry Standards Ecosystem Overview

IEEE802.11

Accord

VHT5G

Core

Spec

11ad

(60 GHz)

WSE

Docking

EXTEND

60

GHz

Hot-spot 2.0

WBA

GSMA

Smart

Grid

CSEP

Home

Plug

ZigBee

WiGig

Serial Bus

11ai

FILS

11af

TVWS

TVWS

WSA

11aq

PAD

WPS

NAN ‘Social Wi-Fi’

Social SIG

Docking Consor-tium

Dock-ing

TDLS

11ac11ahDis-playWi-Fi AllianceNFCWFD SvsWFD Svs GroupGen Link SG11uSlide8

802.11uSlide9

9

802.11u Icon Bar Displays

Localized Mobile Services (LMS)

(courtesy of Esteban Torres, Cisco)Slide10

How Does 11u Change the Situation?

SSID 1

SSID 2

SSID 3

SSID 4

Current Approach:

Device scan for SSIDs

End user has to associate with SSID to discover the service in the SSID

End user launches web browser and enters URL to get web service

Current Approach

SSID 1

SSID 2

SSID 3

SSID 4

802.11u Approach:

Device scans for service (not SSID)

Prompts end-user or auto launches service

End-user clicks on prompt, automatically associates with SSID, and seamlessly launches a web service

802.11u

Service Discovery Pre-association

Service

Service

ServiceSlide11

What’s Required to Implement 802.11u

The AP needs a “service advertiser”

The client device needs a “service launcher”

802.11u-enabled Handset

Handset Vendor

Wi-Fi Driver

Software

Update

802.11u

Protocol

stack

GUI

Handset Vendor

Verizon

LMS

Integrated

into WI-Fi ICSlide12

802.11u GUI

802.11u defines messaging and protocols, but these are straightforward

The key will be creating GUI’s that allow users to configure this capability easily and to their liking

OFF

Mode:

Service

ON

LMS

Open

Closed

Handset with 802.11u

GUI

My Icons:

Target

Ascot

Starbucks

Best Buy

-

Favorites

802.11u Filters

Wi-Fi Driver

Software

Update

802.11u

Protocol

stack

GUI

802.11u Filters

Show me only

Coffee houses

Hotspot

Retail stores

LMSSlide13

Hotspot 2.0 (

Passpoint

)Slide14

Service Provider

Wi-Fi

is currently not easy to use (manual intervention required) and confusing

Web page redirection creates ease of use problem

Absence of a standardized mechanism for connection establishment

Hotspot network connectivity ≠ Network service

Inconsistent and limited security (local access and authentication mechanism)

No indication that a session has expired – network access is suddenly lost

Problem Statement

Cellular : Turn on phone and make call

Hotspot : Turn on Wi-Fi and ?

Find

Connection Manager

Launch

Connection Manager

Scan for

SSIDs

Select

Correct

SSID

Associate

with

SSID

?Slide15

Use case: Cellular-like Experience

Automatic and Secure Easy Connectivity for Wi-Fi Subscribers

Cellular

Automatic and Secure

1. SP subscriber comes to roaming partner

2. Gets service

automatically

3. Secure connection

Hotspot 2.0

1. SP subscriber turns

on his phone

2. Gets cellular service

automatically

3. Secure connection

Cellular Tower

(Home SP)

Cellular Device

1. Wi-Fi subscriber comes

to AP of Home SP

2. Gets Wi-Fi service automatically

3. Secure connection

Automatic and Secure

Cellular Device

Hotspot 2.0 STA

(single or

dual-mode)

Hotspot 2.0 AP

(Home SP)

Cellular Tower

(Roaming

Partner)

Hotspot 2.0 STA

(single or

dual-mode)

Hotspot 2.0 AP

(Roaming

Partner)

1. Wi-Fi subscriber comes

to AP of Roaming Partner

2. Gets Wi-Fi service automatically 3. Secure connection

Source: WFA Slide16

Scope of Work for the WFA Hotspot 2.0 Technical Taskgroup

Development of Specifications

ANQP (Access Network Query Protocol)

extensions

to 802.11u

Operator Policy and Sign On ProcedureSecurity EnhancementsDevelopment of an Interoperability TestplanInteroperability PlugfestingSlide17

Wi-Fi

Passpoint

(Hotspot 2.0)

Name

+ Spec

Passpoint, based on Hotspot 2.0 Tech SpecDescription

Seamless WLAN connectivity for mobile devices, modeled on cell phone networks

Key Technologies802.11u802.1x

EAP-SIM, AKA, TLS, TTLS, FAST

High

Value Use Cases

Enable Wi-Fi traffic offload from mobile networks to WLAN.

Device to automatically joins network using p

re-loaded credentials for preferred Service Provider Networks (Significantly better User Experience).

Target CustomerOperators, Infrastructure Vendors, Handheld

OEMs, PC,Target Products

Access Point, handheld, PC, tablet

Key Requirements

Release 1: Streamlined network access

Release 2: Provisioning of Operator policyRelease 3: Seamless Service Across 3GPP and Wi-Fi Access

Timeframe

Release 1: launched 6/26

Release 2: late 2013 Release 3: 2014/15Slide18

Hotspot 2.0 Procedure

Discovery

:

The mobile device is scanning for APs with which to associate and for related information useful for network

selection

HS 2.0 enables an STA to discover usable APs based on Hotspot Operator Friendly Name, Roaming Consortium list, Venue name, NAI Realm list, Domain Name list

, 3GPP Cellular Network informationAdditional performance related information is available eg., BSS load, Backhaul capacity , WAN

Metrics, Connection Capability, Online Signup providers list, etc.Registration: The mobile device is setting up a new account with an SP or hotspot provider. If the mobile device already has valid credentials for a given hotspot, this state is short-lived. Provisioning: The Wi-Fi infrastructure is establishing credential information and providing policy information to the mobile device. If the mobile device already has valid credentials for a given hotspot, this state is short-lived

.

Security schemes available are WPA2 Enterprise, EAP-SIM

, EAP-AKA, EAP-TLS, EAP-TTLS

Access:

The mobile device has successfully associated and authenticated with the hotspot and can access the services for which the user has subscribed.Slide19

HS2.0 Capabilities and Requirements

Interworking IE

Roaming Consortium IE

BSS Load IE

VENUE Name

Network Authentication Type

Roaming Consortium List

IP Address Type AvailabilityNAI Realm List3GPP Cellular Network InfoDomain Name List

HS Query List

HS Capability List

Operator Friendly Name

WAN metrics

Connection Capability

NAI Home Realm Query

Operating Calls Indication

802.11u

HS2.0

Hotspot 2.0 uses protocol defined within the IEEE P802.11u-2011, Amendment 9: Interworking with External

Networks

Assist

in network selectionAssist in capabilities supportedWFA defined Hotspot

2.0 extensions of the 802.11u information elements (ANQP)

Elements exchanged using 802.11u (Generic Advertisement Service) GAS framesSlide20

ANQP elements used for HS2.0 (not complete list)

Roaming Consortium

Indicates roaming consortium or SSP (i.e. operator) whose security credentials can be used to authenticate with the AP

Domain

Name List

Domain Name of the entity operating the 802.11 networkValues include: On-line enrollment supported, HTTP/S redirectionOperator Friendly NameWi-Fi client can request a list of all the mobile operators' names that are allowed to automatically connect to the Wi-Fi hotspot. If your operator's name is on the list, your device will proceed with connection decisions

WAN MetricsProvides information on the speed of the WAN connection to the Internet.

Connection CapabilityProvides connection status of the most commonly used communications protocols and ports.Network Access Identifier (NAI) Home Realm QueryUsed by the STA to determine if the NAI realms for which it has security credentials are realms corresponding to SPs or other entities whose networks or services are accessible via this BSS. (Which service providers can I connect to here?)Hotspot (HS) Query ListProvided by STA to APCarries identifiers of ANQP elements for which the mobile is

querying the AP

Hotspot (HS)

Capability List

Provides list of information configured in

AP back to the mobile deviceSlide21

Secure Access – Network Authentication Type

Wi-Fi CERTIFIED

Passpoint

is WPA2™ Secured

Wi-Fi CERTIFIED

Passpoint uses following credential type and EAP methods

Credential Type

EAP MethodCertificateEAP-TLS

SIM/USIM

EAP-SIM

,

EAP-AKA

Username/Password (with server side certificates)

EAP-TTLS

with MSCHAPv2

Secure AccessSlide22

Hotspot GAS exchanges

Hotspot 2.0 capable AP Beacons and Probe Response frame include:

RSN IE(WPA2)

Interworking Element (includes HESSID and Venue Information)

Advertisement Protocol Element (Indicates ANQP)

Roaming Consortium Element(A list of roaming consortium identifier)

The Hotspot 2.0 Indication element

Hotspot 2.0 capable STAs scan for networks and discover an AP advertising Hotspot 2.0 capability.Hotspot 2.0 capable STA uses ANQP to the AP to determine properties of the Hotspot 2.0 Access Network. The Hotspot capable STA selects the ANQP query elements it requires to query the Hotspot 2.0 network for Interworking Service information.

GAS Initial Request Frame

( Advertisement Protocol = ANQP;

ANQP Query = {Venue Name, Network Auth, Roaming Consortium, IP Address Type, NAI Realm, 3GPP Cellular information, Domain Name; Operator Friendly Name, WAN Metrics, Connection Capability} )

GAS Initial Response Frame

( Advertisement Protocol = ANQP;

Venue Name; Network Auth; Roaming Consortium; IP Address Type; NAI Realm; 3GPP Cellular information; Domain Name; Operator Friendly Name,; WAN Metrics; Connection Capability)

Hotspot 2.0 capable STA evaluates the response based on its Hotspot 2.0 subscription information and associated policy and choose to associate to the AP.

NOTE SSID is not necessary to make the network selection.

Associate and WPA2 EAP Authentication

Secure WPA2 Data ConnectivitySlide23

Hybrid LTE/Wi-Fi

Small CellsSlide24

LTE+Wi-Fi Convergence -- Basic

Definition

Single device with LTE small cell and Wi-Fi capabilities

Dynamic offload and hand-off between radios & networks

Basic requirements

Femto + Wi-Fi connection managementConnection method should be invisible to userSmart policies and control in both terminal and networkSmart system selection/ bandwidth management

Link quality based selectionPreserve cellular management with Wi-Fi

offloadHotspot 2.0 generalizationBilling, roaming, authentication, securityCo-existenceSelf organizing LTE, Wi-Fi, and LTE+Wi-FiSlide25

LTE+Wi-Fi Convergence -- Advanced

Advanced requirements

Femto

+

Wi-Fi

connection managementEnhanced system selection/ bandwidth managementMobility/ velocity, application requirementsBandwidth aggregationTCP layer (multipath TCP)IP layer (Hy-Fi

type) MAC layerTraffic shaping, network acceleration and backhaul optimization for

LTE+Wi-Fi flowsRF and HW architectures, cost synergiesSlide26

Thank you!