Carrier Grade Wi-Fi Solution By Dr. Ajay N. Khosla Director AnkhnetInformations Pvt. Ltd. (firstname.lastname@example.org) +91-9820217705
Why Wi-Fi for Wireless Broadband ? • Overwhelming demand for video and other high bandwidth data services that has swamped 3G networks. • Future data needs cannot be met by enhancements to the traditional mobile network on available licensed spectrum. • Wi-Fi radio interface is available in all smartphone, tablets and PCs. • Wi-Fi offers a high-capacity connection and It is Ubiquitous.
Why Wi-Fi for Wireless Broadband ? • Wi-Fi use unlicensed spectrum. • Wi-Fi is easy and faster to deploy. • Wi-Fi simultaneously support a number of service including public and private to many provider users. • It support true triple play (Data, Video and Data). • It is possible today to offer a comprehensive Wi-Fi hotspot service for both public and private services.
Explosive Growth of Wi-Fi • Explosive growth is driven by many factor. • Ubiquity of Wi-Fi in mobile devices like laptops, tablets and smartphones. • Investment in Wi-Fi networks by fixed broadband providers as a means to extend their services to subscribers outside the home. • End-user appetite for Wi-Fi connectivity over 3G and 4G for mobile devices
Explosive Growth of Wi-Fi • Widening support by mobile operators of Wi-Fi hotspots as a means to offload traffic from congested networks and to improve the end-user experience.
Wi-Fi Goal Wi-Fi roaming should be like cellular roaming
What is Wi-Fi Hotspot • Hotspot is venue or area like Cyber Café, where Wi-Fi service is available and user can connect to it and use Internet. • It can be free or chargeable W-Fi service provided by owner of café, restaurant. hotels, airport, railway station, school, college, university, library etc. or any other public place. • It can be provided by your ISP. Where user can connect to Wi-Fi at any part of city. • It can be extended service by mobile operator as 3G offload.
How Free Wi-Fi Hotspot Works UE is Connected to AP Open SSID Without any Authentication User Equipment Mobile/Laptop/Tablet (UE) Wi-Fi Access Point After Connection,User open browser to authenticate
How Free Wi-Fi Hotspot Works Browser show login page Here hotspot owner can also add Ads or registration process can also lead to Ads.
How Free Wi-Fi Hotspot Works New User Registration
How Free Wi-Fi Hotspot Works After receiving SMS User can go back to login page and login using SMS username and password.
How to Charge User For Using Hotspot • After registration , useris redirected to online-payment webpage. OR • User buys coupons from venue and send coupon PIN number via SMS to get Username and Password.
Why Wi-Fi provider use SMS Provider use SMS to know the user mobile number to whom they send username/password. User Mobile number can be used to track user in future for cyber crime activity. It is mandatory by regularity bodies to “Know Your Customer” (KYC).
Which SSID belongs to me? Due to increasing number of Wi-Fi Hotspot there are chances that users are unaware about Wi-Fi network to which they connect. In case of Roaming partner, user don’t know, which SSID represent their ISP roaming partner. Users also don’t know which SSID offer free Wi-Fi service and online sign-up.
Automatic Selection of Wi-Fi Service ? • Network discovery and selection: • Devices discover and automatically choose network based on user preference, provisional operating policy, and network availability. • IEEE comes with new standard 802.11u base on Generic Advertisement Service (GAS) and Access Network Query Protocol (ANQP) protocol in Feb., 2011. • Hot Spot 2.0 is released by Wi-Fi Alliance Based on 802.11u • NGH (Next Generation Hotspot) by WBA (Wireless Broadband Alliance) leverages 802.11u, HS2.0 and add extension.
Login process require manual human intervention. Login is not seamless , it require human intervention. This process is not only cumbersome but also one of the reason that users are not using free/paid Wi-Fi service. Difficult to give Wi-Fi service to devices, which lack browser, eg. camera, home appliances, mobile etc. If user already have username/password then they should be login automatically or seamlessly without any human intervention as soon as user come into the range of Wi-Fi zone.
Seamless Automatic login • Seamless network access : • Wi-Fi hotspot access for in-network APs should not requires an active selection or input from the subscriber. • Authentication can be on basis of username and password, digital certificate credential, SIM/USIM. • No end-user intervention should be required in order to establish a connection to a trusted network. • WPA2-Enterprise, EAP-SIM, EAP-AKA is recommended by expert.
Wi-Fi Client Basic Architecture Network / Connection Manager Supplicant Support 802.11u, HS2.0 and Passpoint Kernel Network Device Driver
What is Passpoint? • Wi-Fi CERTIFIED Passpoint from Wi-Fi Alliance was developed to address service provider requirements for seamless Wi-Fi access in public hotspots, and to give subscribers the user experience they desire and expect. • It is based on 802.11u and HS 2.0 standard.
What is Passpoint ? Passpoint can be divided into three step Advertise its service in beacon using GAS protocol Send and receive ANQP queries and select AP for association User Authentication based on gather information and its store credentials
New Beacon (Passpoint) • A few information elements are added to the beacon and probe response, including: • Access network type, identifying whether hotspot is for public, private or guest access, etc. • Internet bit, indicating the hotspot can be used for Internet access • Advertisement protocol, indicates the hotspot supports GAS/ANQP/HS2.0. • Roaming consortium element, a list of up to 3 names of reachable service providers.
New Beacon (Passpoint) • Venue information, describing the venue where the hotspot is situated. • Homogenous ESSID, a label identifying hotspots in a continuous zone. • P2P and cross-connect capability. • BSS load element, an indication of current load on the access point originally from 802.11e. • Emergency call availability (802.11u). • Additional Step Required for Authentication (ASRA) (802.11u)
Access Network Query Protocol (ANQP) of Passpoint • The information in the beacon will not normally be enough for the mobile device to decide it wants to connect to the hotspot • Venue Name information • Venue Group and Venue Type is define in 802.11u • Example : Educational Institute (3), School, Secondary (2) • Network Authentication Type information • Acceptance of terms and conditions • On-line enrollment supported • http/httpsredirection • DNS redirection
Access Network Query Protocol (ANQP) of Passpoint • Roaming Consortium list (Define by IEEE) • Example: 0123456 • IP Address Type Availability Information • Availability of IPv4 Address • Public, NATed, Double NATed, Port restricted etc. • Availability of IPv6 Address • NAI (Network Access Identifier) Realm list • Example.com
Access Network Query Protocol (ANQP) of Passpoint • 3GPP Cellular Network information • MCC (Mobile Country Code), 404,405,406 for India. • MNC (Mobile Network Code) Vodafone Maharashtra & Goa 27 • Domain Name list (example.com) • Hotspot Operator Friendly Name • Operating Class. • The Global operating Classesdefine in Table E-4 of IEEE Std 802.11-2012 Annex E • Example : Operating classes 81 (2.4 GHz channels 1-13) and 115 (5 GHz channels 36-48)
Access Network Query Protocol (ANQP) of Passpoint • Hotspot WAN Metrics. • Up/Down. • Backhaul Up/Down Bandwidth. • Current load of Up/Down bandwidth usage. • Load measurement Duration. • Hotspot Connection Capability. • Protocol (UDP), port (5060) , status closed or open. • NAI Home Realm • Example.com
How Passpoint Works AP send beacons with Internetworking, HS2.0, Internet bit set including roaming consortium ID with other parameter. Wi-Fi Access Point User Equipment (UE)
How Passpoint Works UE send ANQP query to find out more information, which is not present in beacon. It may include roaming consortium ID, Domain Name, Chargeable or Free Internet, domain list, venue information etc. Wi-Fi Access Point User Equipment (UE)
How Passpoint Works AP respond to ANQP query. Wi-Fi Access Point User Equipment (UE)
How Passpoint Works UE compare data send by AP with its store credentials of trusted network and its profile and select AP according to its store credential and profile. It try to associate with AP using WPA2-Enterprises or EAP-SIM or EAP-AKA authentication method. Wi-Fi Access Point User Equipment (UE)
How Passpoint Works UE is Connected to AP Wi-Fi Access Point User Equipment (UE)
User Authentication AAA (Radius) AAA (a.com) Provisioning Internet AAA (b.com) UE AP SMS Gateway HLR (c.com) HLR (d.com) Mobile Network
How Roaming Works? AAA (Radius) Internet AAA (a.com) UE AP @a.com is not home network and request is forward to Roaming Partner @a.com AAA Server @a.com AAA Server respond Accept/Reject with reply attributes Username@a.com Password
Secure User Authentication in Windows 7 Next Time user seamlessly login using same credential
Secure Authentication Using Android Phone Click The Connect button & User will be connected to the “TEST-Secure" wireless network Next time user seamlessly connected to all AP with same credential Till user credentials are valid in his/her ISP billing.
How to Manage Large Network • Project like City Wi-Fi will have 1000’s of AP and it require central management tool. • Configuration of AP from central remote location. • Bulk update/change to APs configuration. • Remote monitoring of APs data transfer, number of user connected and health of APs. • Our solution have central dashboard. Which configure APs and monitor its health.
Advantage of Mesh Network • The key advantages • Ease of installation. • No cable costs. • Automatic connection among all nodes. • Network flexibility. • Automatic discovery of newly added nodes. • Redundancy and self-healing reliability.
Advantage of Mesh Network Self Healing and Fail Over Network. Dynamic Auto Routing. Auto Discovery of Gateway. Detecting and Avoiding Loop. End to End better bandwidth throughput. Wireless Mobility. Multicasting. Client Provisioning for last mile access.
Self healing and fail-over Internet Gateway Obstruction
Self healing and fail-over Internet Gateway Obstruction Down