Local Area Networks - PowerPoint PPT Presentation

local area networks n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Local Area Networks PowerPoint Presentation
Download Presentation
Local Area Networks

play fullscreen
1 / 46
Local Area Networks
133 Views
Download Presentation
edan
Download Presentation

Local Area Networks

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Local Area Networks Content Special Topic: WiFi Roaming in the Middle East Class 1

  2. ======!"§==Systems= Arabcom 2004 Class 1: Introduction to LANs & WANs

  3. Agenda • WiFi and Roaming: basic concepts. • WiFi Market Overview in the Middle-East. • WiFi Roaming: an opportunity and a need. • How to roam? • Turnkey WiFi Roaming Solutions. Class 1: Introduction to LANs & WANs

  4. What is WiFi? • Wireless Fidelity • A technology to provide Wireless LAN service • Allows access to private networks and to the public Internet • Radio technology (2,4 - 5 GHz), based on IEEE 802.11 specs • High bandwidth (several MBit/sec) but low coverage (<300m) Class 1: Introduction to LANs & WANs

  5. Hotspot What is Hotspot? Public Hotspot: A location equipped with a WiFi network for access to the public Internet. • Can either be free, or for a fee. • Can be pre-paid or post-paid access fee. Private Hotspot: A location equipped with a WiFi network for access to a private network. • Home Hotspots. • Company Hotspots. Class 1: Introduction to LANs & WANs

  6. Provider B’s Hotspot in the Lebanon Hotel What is WiFi Roaming? Provider A’s Hotspot in France The traveling end user wants to access the Internet through domestic and internationally based hotspots. But he has only an account with the blue provider B. Roaming would allow this end user to access the Internet through his home account while using Hotspots not belonging to his home provider. Gas station Coffee Shop Provider C’s Hotspot in Asia Class 1: Introduction to LANs & WANs

  7. Operate Hotspots Don’t “own” end-customers Don’t bill end users Examples: Kubiwireless in Spain The Cloud in the UK Don’t operate Hotspots Have a large customer base Bill the end users Examples - Providers are typically: ISP’s like T-Online, Wanadoo, etc Mobile Operators like Optimus, etc. Who are the Players of the Hotspot Market? Providers WISPs Both: WISPs + Providers • T-Mobile in Germany and the US, SFR in France, OTENet in Greece, Telefonica in Spain, etc. Class 1: Introduction to LANs & WANs

  8. Agenda • WiFi and Roaming: Basic Concepts. • WiFi Market Overview in the Middle-East. • WiFi Roaming: An Opportunity and A Need. • How to Roam? • Turnkey WiFi Roaming Solutions. Class 1: Introduction to LANs & WANs

  9. Market Trends WiFi is experiencing significant growth, driven by cost and convenience factors. *Source: Gartner Dataquest 2003 Class 1: Introduction to LANs & WANs

  10. Number of Hotspots in Middle EastGrowth in Public WLAN in the Middle East, 2003-2008 Class 1: Introduction to LANs & WANs

  11. Market Trends Drivers for WiFi rapidly growing deployment: • Rapidly improving components (smaller, faster, cheaper) • All new laptops are WiFi enabled (Centrino processors) • Relatively low risk and low cost of deployment • Source of differentiation b y offering an innovative VA service • Mobility of workforce In the Middle-East most WISP’s, Carriers, Mobile Operators and ISP’s are implementing WiFi strategies. Class 1: Introduction to LANs & WANs

  12. Agenda • WiFi and Roaming: Basic Concepts. • WiFi Market Overview in the Middle-East. • WiFi Roaming: An Opportunity and A Need. • How to Roam? • Turnkey WiFi Roaming Solutions. Class 1: Introduction to LANs & WANs

  13. Roaming partner A Roaming partner B Roaming partner C hotspot hotspot At the airport At the hotel First Opportunity: Revenues through ‘In-Roaming’ You are a WISP, operating one or several hotspots. How to Improve your Revenue? Allow Customers of various providers to use your Hotspots through WiFi Roaming agreements You are a WISP Class 1: Introduction to LANs & WANs

  14. You are a Provider WISP WISP WISP hotspot hotspot hotspot hotspot hotspot hotspot Second Opportunity: Revenues through ‘Out-Roaming’ You are a Provider, typically an ISP or Mobile Operator. How to Improve your Revenue and ARPU? Allow your Customers to use Hotspots of various WISPs through WiFi Roaming agreements Class 1: Introduction to LANs & WANs

  15. WiFi Roaming: A Need • Hotspot operators (WISP’s) need customers to use their Hotspots! • ISP’s and Mobile Operators need Hotspots for their customers! • No one has WiFi a worldwide coverage • There is a need for international WiFi Roaming • This is similar to the GSM Roaming concept. • Most countries are not monopolistic for WiFi • There is also a need for in-country WiFi Roaming • This is different from GSM Roaming concept. Class 1: Introduction to LANs & WANs

  16. Agenda • WiFi and Roaming: Basic Concepts. • WiFi Market Overview in the Middle-East. • WiFi Roaming: An Opportunity and A Need. • How to Roam? • Turnkey WiFi Roaming Solutions. Class 1: Introduction to LANs & WANs

  17. How to Roam: First PossibilityNegotiate Multiple Bilateral Agreements for Roaming 100 players means nearly 5000 connections ! ISP WISP WISP Mobile Mobile ISP WISP ISP Mobile ISP WISP Class 1: Introduction to LANs & WANs

  18. How to Roam: Second PossibilityUse a Single Clearing-House for Multiple Roaming Possibilities Mobile WISP ISP WISP ISP Clearing-House solution Mobile WISP ISP Mobile WISP ISP Class 1: Introduction to LANs & WANs

  19. How to Roam: What Strategy? • Clearing-House Solutions for WiFi Roaming are used to reach many players (WISPs and/or Providers) through one agreement. • Easy and cheap! Only one agreement is necessary, and the solutions on the market provide billing, clearing, etc. • Bilateral WiFi agreements for WiFi roamingare in general used for strategic partnerships. • For example large European Mobile operators are signing bilateral agreements for WiFi Roaming. Class 1: Introduction to LANs & WANs

  20. Agenda • WiFi and Roaming: Basic Concepts. • WiFi Market Overview in the Middle-East. • WiFi Roaming: An Opportunity and A Need. • How to Roam? • Turnkey WiFi Roaming Solutions. Class 1: Introduction to LANs & WANs

  21. WiFi Roaming Solutions on the Market • Airpath • Boingo • GRIC • iPass • Picopoint • WeRoam • …and many others… Class 1: Introduction to LANs & WANs

  22. The divisions of Deutsche TelekomFour-division Strategy Deutsche Telekom Fixed Network Access Internet Service Provider MobileCommunications IT & TC solutions (ITC) T-Com T-Mobile T-Online T-Systems Class 1: Introduction to LANs & WANs

  23. T-Systems’ WiFi Roaming SolutionBenefits Benefits for WISPs, ISPs and Mobile Operators • Potentially millions of additional end customers, but through only one connection, one contract, one bill. • Great value added service to differentiate form competition. • No initial investment in most cases, no monthly fee. • Strong R & D resources: customized solutions available • Additional revenues. And the guarantee of a stable and a long lasting partner. Benefits for End-Users: • Easy, fast and highly secure access worldwide. • Usage of home provider Login and Password. • Post-paid invoicing by the home provider. Class 1: Introduction to LANs & WANs

  24. T-Systems‘ WiFi Roaming SolutionFootprint We Target by end 2004: • WISP: over 10 000 Hotspots. • ISP’s and Mobile Operators: over 100 million users. Current Partners of T-Systems’ Roaming Platform: • Providers: T-Mobile, T-Online, Eplus, DNA, etc. • WISP: T-Mobile, Berlinet, Viewquest, Airnix, Frankfurt Airport, etc. …and we are in contact with most of the players in the Middle East. We also focus on strategic presence: • Events: Eurocup in Portugal, Olympics in Athens, etc. • Locations: Airports, Hotels, Congress centers, etc. …and we are CBB’s first partner  you can surf while flying!! Class 1: Introduction to LANs & WANs

  25. Fadi Farah International Carrier Sales & Solutions T-Systems International Phone: +33 6 15 36 54 12 E-mail: ffarah@t-systems.fr Farah Fadi T-Systems International Class 1: Introduction to LANs & WANs

  26. WiFi RoamingBack-up slides Class 1: Introduction to LANs & WANs

  27. Selling of WLAN Minutes Provider Provider Provider WLAN RoamingPlatform Buying of WLAN Minutes WISP WISP hotspot hotspot hotspot hotspot Buying and Selling of Online Minutes. • T-systems • Buys from WISPs access to their hotspots • Sells to ISPs and Mobile Operators, access to WISP hotspots Class 1: Introduction to LANs & WANs

  28. Legend Provider 2 WLAN Authentication 1 WLAN Authorization 2 Internet Traffic 3 Internet WLAN Roaming Platform Hotspot 1 Access Points WISP UserLaptop Access Cube 3 Authentication: Information Flow. Class 1: Introduction to LANs & WANs

  29. Provider €/$ End-user pays his provider/carrier e.g. ISPs e.g. GSM carrier WISP €/$ WLAN Roaming-Platform €/$ Clearing-House pays WISP their share Legal relationship Billing: Financial flows. Money flow Class 1: Introduction to LANs & WANs

  30. General Course Information • Instructor Info • General & University Info • Book & Course Material • Course Schedule • Grading & Exams • Homework Class 1: Introduction to LANs & WANs

  31. Overview of LANs and MANs • The Need for Networking • Driven by the decreasing cost of computer hardware and the dramatic increase in its capabilities • Factors driving the creation of a new set of advanced desktop applications (with more on the way): • Image Processing • Speech Recognition • Videoconferencing & Multimedia • Three characteristics are of greatest use in classifying communication networks : • Geographic Reach • Topology • Transmission Medium Class 1: Introduction to LANs & WANs

  32. LANs, MANs, and WANsClassification based on Geographic Reach • Characteristics of Wide Area Networks (WANs) • Large Geographic Area • Requires the crossing of public right-of-ways • Partially or fully relies on common carrier circuits • Slower speeds than LANs & MANs, although the spread of fiber optic facilities is beginning to change this • Examples of WAN technologies: • ISDN (BRI & PRI) • SONET • Frame Relay • ATM Class 1: Introduction to LANs & WANs

  33. Comparison Class 1: Introduction to LANs & WANs

  34. LANs, MANs, and WANsClassification based on Geographic Reach • Characteristics of Local Area Networks (LANs) • Small Geographic Area • A LAN is completely owned and operated by a single organization • The data rates of a LAN are usually an order of magnitude higher than a WAN • Characteristics of Metropolitan Area Networks (MANs) • Occupy the middle ground between LANs and WANs • MANs typically adapt and extend LAN technologies to cover a larger geographic area • Have provided greater bandwidth at lower costs within metropolitan areas Class 1: Introduction to LANs & WANs

  35. LANs, MANs, and WANsApplications • Personal Computer Local Networks • Even with the proliferation of low cost PCs that allow staff members to do their own processing, there are still important reasons for networking these computer systems • File and data sharing • Share expensive network resources (printers, storage, etc.) • Real-time and near real-time collaborative efforts • Easy file and data protection (networked backups) • Financially, the networking of low-cost PCs usually necessitates a low cost network technology Class 1: Introduction to LANs & WANs

  36. Class 1: Introduction to LANs & WANs

  37. LANs, MANs, and WANsApplications • Back-end & Storage Area Networks (SANs) • Used in large computer installations (e.g. mainframes) • Key requirement is high-speed bulk data transfer between a small number of systems in a limited area • Unlike traditional server-attached storage, SANs provide storage attached directly to the network (Increases efficiency) • Key reasons for implementing a SAN • Online backup systems • Load leveling across multiple systems (storage ‘farms’) • Wider accessibility of large amounts of data • These requirements drive SANs to high bandwidth and high cost installations Class 1: Introduction to LANs & WANs

  38. Class 1: Introduction to LANs & WANs

  39. LANs, MANs, and WANsApplications • High-Speed Office Networks • Newer (particularly multimedia) applications are driving the development of higher speed LANs that are replacing the older PC Local Networks • Use different technologies than SANs because they are meant to service a larger number of systems dispersed over a wider area Class 1: Introduction to LANs & WANs

  40. LANs, MANs, and WANsApplications • Backbone Local Networks • Diverse requirements in typical organizations have led to the adoption of a multi-tiered LAN architecture • Advantages of the multi-tiered LAN over the single-LAN architecture • Greater reliability • Greater capacity • Lower overall cost • The core of the multi-tiered LAN architecture is the backbone -- a high bandwidth network connecting together lower-speed, lower-cost LANs • If the organization is geographically dispersed the backbone may be a MAN Class 1: Introduction to LANs & WANs

  41. LANs, MANs, and WANsLocal Network Architecture • Information Distribution • When setting requirements for a network installation, user traffic patterns must be explored • What type of data will traverse the network? • How is this data distributed? • What is to be connected (PCs, servers, mainframes, all of the above, etc.)? • As mentioned earlier, a multi-tiered network is typically the best approach to meeting organizational needs • Typically a two or three tiered architecture is used • Usually evolve in one of two ways, depending on how centralized the organization’s IT rules are: • Bottom-up • Top-down Class 1: Introduction to LANs & WANs

  42. Class 1: Introduction to LANs & WANs

  43. LANs, MANs, and WANsLANs, WANs, and the Internet • Most organizations are geographically distributed & must deal with connecting together widely dispersed LANs • Most organizations have two choices for WAN connectivity • A private WAN • A public network or the Internet Class 1: Introduction to LANs & WANs

  44. Class 1: Introduction to LANs & WANs

  45. LANs, MANs, and WANsLANs, WANs, and the Internet • A private WAN • Provides a dedicated connection from leased lines or a similar service • Good for security & sites with high & predictable inter-site traffic • Can be expensive, especially for smaller organizations & sites • A public network or the Internet • Provides an inexpensive & quick solution for connectivity • Can also provide an access path for mobile workers • Performance is an issue with real-time traffic or large data transfers • Virtual private networks (VPN) used to address security: • Encapsulation & tunneling are the key concepts • IPsec is an example of a network layer VPN technology Class 1: Introduction to LANs & WANs

  46. Class 1: Introduction to LANs & WANs