Bell Labs IOTA Technology Assets: Access Gateway Mobility Client Software MobileHotSpot Gateway

Transcription

1 Bell Labs IOTA Technology Assets: Access Gateway Mobility Client Software MobileHotSpot Gateway Scott Miller Director, High Speed Mobile Data Research Networking Research Laboratory Bell Laboratories, Lucent Technologies

2 Motivation Slides Slide 2

3 & 3G Are Complementary Technologies 3G (cdma2000 & UMTS) b Data rates 144 Kbps 2Mbps 11 Mbps Spectrum Licensed ( GHz) Unlicensed (2.4 GHz) Radio Range Few miles <300 feet Mobility High-speed Walking speed Security Established, well defined Problem, standard being defined Terminals Emerging now: PC Cards, PDA Low cost, laptop built-in Technology differences make and 3G serve different roles used for indoor data and hotspot coverage 3G used for voice and ubiquitous data coverage End terminals can support both technologies Offload data traffic onto in hotspot areas leaving more voice capacity Public and 3G can coexist to offer subscribers better coverage and service Slide 3

4 Complete Service Picture Network Support Accounting/ Billing Authentication Wireless Carrier Network Mobility/ Roaming Agreements Applications/ Content Roaming Broker Internet Accounting VPN Corporate Network Applications/ Content Authentication Wireless Access Airport/ Enterprise Airport/ Enterprise Starbucks Store-front 2.5/3G Access 2.5/3G Access Handoff Possibilities Intratech Intranetwk Handoff Intratech Internetwk Handoff Intratech Internetwk Handoff Intertech Internetwk Handoff Intratech Intranetwk Handoff Intratech Internetwk Handoff Subscriber Service Uninterrupted Applications: Streaming, , Corporate VPN, Web One Bill from Wireless Carrier/ Bundled Data Package Seamless Mobility/Roaming for Subscriber/ Negotiated Rates with Partners Terminal Possibilities Built-in Dual Interface Built-in 2.5G or 3G data card Combined Air Card Slide 4

5 Wireless Carrier Benefits of Combined Offering Owning the subscriber through bundled and 2.5G/3G data offering offer ubiquitous wireless data coverage and seamless roaming without dropped data connections example: $X/month package for 3G data access as well as access on all roaming partner networks stimulate growth of 3G wireless data usage with combined offering single point of administration for subscribers Carrier differentiation better data coverage through revenue sharing arrangements with partner ISPs better rates for subscriber through carrier negotiated rates on partner networks Better service in congested hotspot and indoor areas offer higher speed data access through better availability of 3G for voice services by offloading data traffic to networks Slide 5

6 Bell Labs Technology Assets Technology to support two distinct methods of embracing as complimentary to 3G wireless these are: /3G Service Integration Challenge is to define end-to-end networking and service architecture for user authentication, billing, accounting, service profile, security, roaming, dual-network terminal support, and seamless inter-technology handoffs Mobile HotSpot/Portable HotSpot Enable subscribers to access the Internet by using bridged to a 3G high-speed wireless data backhaul (e.g. EV-DO) in buses, trains, hotspots, and places where it is not feasible to have a wired backhaul or for quick temporary network setup Advanced prototype versions of the following have been built: Access Gateway provides interoperability with 3G network provides security, mobility, accounting, and IP layer features for public access Software-only solution on standard Linux platform Mobility Client Software Windows client software to improve end-user experience, manage multiple physical interfaces (, 3G, ethernet), and provide seamless mobility across networks MobileHotSpot Gateway Combines access point, EV-DO 3G wireless backhaul, and public access gateway networking functionality into a single box allowing for mobile/portable hotspot Slide 6

7 High-Level Architectures for: /3G Service Integration Mobile/Portable HotSpots Slide 7

8 Integration Architecture with 3G Wireless Goal: Seamless roaming/uninterrupted access regardless of air interface Home network One bill for all wireless services (e.g. Verizon) Reuse 3G backend infrastructure for Billing Servers Home AAA Mobility Agent Common solution for CDMA2000 & UMTS although easier to interoperate with CDMA2000 Internet 3G Wireless Access (e.g. Verizon) PCF or SGSN BS PDSN or GGSN/FA BSC BS Networks deployed and engineered independently, Roaming partnerships Local AAA 2 Missing Pieces: Gateway & Client Software Access Router Leased line (T1, DSL, cable ) Gateway Simple-IP & Mobile-IP modes supported Hot-spot ( WISP) Access Points Dual-mode terminal w/ Mobile-IP client software Slide 8

9 Mobile/Portable HotSpot Basic Concept Goal: Leverage for access to 3G data Subscribers can access the Internet with EV-DO in buses, trains, hotspots by using in the same manner as they do at home and at work At Home At Work MobileHotSpot PortableHotSpot Internet Internet Internet Cable/DSL Access Network Enterprise Intranet EV-DO Wireless Access Network Cable/DSL Access Ethernet EV-DO Wireless Backhaul Modem AP/GW (e.g. Linksys) Gateway Access Points MobileHotSpot Gateway Combines AP, EV-DO Backhaul, and Public Access Gateway Subscriber w/ Subscriber w/ Subscriber w/ Slide 9

10 IOTA Access Gateway Supporting Both SimpleIP & MobileIP Modes of Operation Slide 10

11 Gateway Combine several differentiating features not available in current products on market into a low-cost gateway with protocol support for mobility, security, web and IP services Simultaneous support for MobileIP and SimpleIP modes of operation MobileIP Foreign Agent/Home Agent compliant with IETF/3GPP2 standards AAA/Radius Client & Server support Authentication: MobileIP authentication by Foreign Agent, Browser-based, One-time SMS password, proxy for 802.1x/EAP Accounting: reliability with persistent store, Interim accounting, compliance with 3GPP2 standards Authorization: enforce policy obtained from Home-AAA server on local network (QoS, Accounting parameters, reauthentication times, etc) Dynamic rate limiting QoS mechanism to provide class of service and fairness in public deployments IP Services: Dynamic packet filter/firewall, HTTP redirection, DNS redirection/dns proxy, NAT DHCP w/ integrated session state management Integrated Web cache Web Cache Web Server Web Services Local Portal MIP Foreign Agent Mobility MIP Home Agent QoS DHCP NAT Security AAA Protocols IP services Security/Accounting Slide 11

12 IOTA Mobility Client Software for Windows XP/2000 Slide 12

13 Multi-interface Mobile IP Client Improving the subscriber s experience Minimizing subscriber interaction when roaming across networks and networks using different air interface technologies One-time user authentication Automatic client terminal configuration for network Dual Interface Mobile IP Client detecting network presence and network selection initiating switch to other interface and update packet routing priority to network and network selection Optimized handoff by keeping 3G PPP network connection up dormant when not in use Extensible to other interface types (e.g. 1xEV--DO, ethernet, a) separation of interface specific logic Integrated VPN client support Slide 13

14 Multi-interface Mobility Client Software Unique client software not available today on the market Seamless intra- and inter- technology handoffs using MobileIP Management of multiple physical interfaces (, 3G/PPP, Ethernet) Automated network selection algorithm based on priority, signal strength, and preferred network list Mobile VPN capability: IPSec over MobileIP Slide 14

15 Mobility Client Architecture Graphical User Interface & Monitoring User Level OS Kernel Level OS PPP Support Serial Driver AT Command Set IS-835 Shim PPP Interface MIP State Machine Ethernet Network Detection Network Selection Interface Abstraction Layer/API PPP Main Logic TCP/IP Protocol Stack CDMA2000 Sierra 3G1xRTT VPN/IPSec Client Driver Multi-interface Mobility Client Driver Ethernet Interface Interface Virtual MobileIP Adaptor VPN/ IPSec Control New code developed, Specifically for 3G- integration VPN/IPSec integration (e.g. Lucent IPSec Client) Interaction with Existing Windows OS modules Software runs on Windows 2000/XP operating system Approximately 45,000 lines of code, 13,000 of which are Windows NDIS kernel networking code Slide 15

16 MobileHotSpot Gateway Slide 16

17 Wi-Fi on the Move with EV-DO: Architecture Both the MobileHotSpot Gateway and individual users are authenticated to Home-AAA/ Billing can be done for entire HotSpot and/or for individual users Home network Home AAA MobileIP HA PDSN F-AAA Internet EV-DO Wireless Access EV-DO RNC Multiple Networking Modes of Operation for Subscriber & Gateway: SimpleIP or MobileIP BS BS Subscriber w/ SimpleIP, no client required EV-DO Backhaul Multiple users traffic aggregated through one EV-DO backhaul connection Hotspot Subscriber w/ Mobile-IP client MobileHotSpot Gateway Combines AP, EV-DO Backhaul, and Public Access Gateway Slide 17

18 MobileHotSpot Gateway w/ EV-DO Backhaul Low-cost gateway combines Access Point, Public Access Gateway, and EV-DO backhaul in one small appliance HotSpot installation simply by applying power to gateway no additional wiring PPP restoration and management of changing IP address on EV-DO backhaul Simultaneous support for MobileIP and SimpleIP modes of operation Authentication: MobileIP authentication by Foreign Agent, Browser-based, One-time SMS password, 802.1x/EAP through Radius Accounting: reliability with persistent store, Interim accounting, compliance with 3GPP2 standards Authorization: enforce policy obtained from Home-AAA server on local network (QoS, Accounting parameters, reauthentication times, etc) Dynamic rate limiting QoS mechanism to provide class of service and fairness in public deployments/admission control to prevent backhaul overload IP & Web Services: Dynamic packet filter/firewall, HTTP redirection, DNS redirection/dns proxy, NAT, DHCP, Web Cache, Local Portal Integrated Access Point Web Cache Web Server Web Services QoS DHCP NAT IP services Local Portal MIP Foreign Agent PPP Management Mobility Radius Security Security/Accounting Integrated EV-DO Backhaul Slide 18

19 Picture of MobileHotSpot Gateway Requires Linux operating system can support different size platforms easily Picture shown with dual receive EV-DO antenna and single receive antenna (dual receive also supported on ) Slide 19

20 Value Proposition for MobileHotSpot Gateway Promote short term uptake/usage of EV-DO Allow users to access EV-DO without purchasing expensive data cards and installing new software/drivers Leverage large base of existing cards and trend to have built-in capability in laptops and PDAs Appeal to enterprises by removing costs associated with data cards and software support for all employees Differentiates EV-DO from 1xRTT Target Markets MobileHotSpot: deploy hotspots in buses and trains to offer Internet connectivity to captive commuters who spend hours a day using public transportation PortableHotSpot: quickly provide multi-user Internet connectivity for temporary network installations without requiring costly wiring Enterprise applications: outdoor events, trade shows, temporary network setup for building moves, portable office setup for meetings, conference rooms, extending EV-DO data coverage in-building Temporary network deployments: emergency sites, cruise/freight ships docked in port Low-cost public hotspots: allows provider to monitor traffic usage before investing in costly wiring and wireline backhaul service charges for hotspot High-speed Internet access where DSL or Cable is not available (not initial target) Potential to bring large subscriber base to EV-DO service this year Slide 20