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WiFi Technology PowerPoint Presentation

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Slide 1 - 1 WiFi Technology WiFi Times Five: How 802.11g Changes the Mobility Picture William Beyda Vice President, Product Development Siemens Enterprise Networks
Slide 2 - 2 Overview Wireless LAN Technology Landscape Standards Evolution WiFi Hot Spots Wireless LAN Security Where is WiFi? Does speed matter? The New Mobility What are the new “killer apps”?
Slide 3 - 3 Wireless LAN Standards Evolution WiFi stands for: Wireless Fidelity, defined by the IEEE Standards: 1999: IEEE 802.11a and 802.11b 1999: Dual Band IEEE 802.11a&b 2003: IEEE 802.11g
Slide 4 - 4 802.11a 54 Mbps maximum 8 channels, 64 users per access point Operating in the unregulated 5 GHz range Shorter range than 2.4 GHz but less interference, up to 150 feet Security: Strong 152 bits WEP encryption
Slide 5 - 5 802.11b 11 Mbps maximum 3 channels,32 users per access point Operating in the 2.4 GHz range 300 foot range (interference an issue) Security: 48, 64 and 128 bits WEP encryption The most widely deployed
Slide 6 - 6 802.11g 54 Mbps maximum Proprietary solutions up to 108 Mbps 3 channels, 32 users per access point Operating in the 2.4 GHz range 300 foot range (interference an issue) Security: same as 802.11b - 48, 64 and 128 bits WEP encryption Backward compatible with all 802.11b but not with 802.11a Fast becoming the accepted solution, since cost is similar to 802.11b equipment
Slide 7 - 7 Dual Band (802.11a & b) Equipment 54 Mbps & 11 Mbps 8+3 channels, 64 users per access point Operating in both 2.4 and 5 GHz ranges Security: 152 bits WEP encryption Does not support 802.11g (thus does not have high bit rate in long distances)
Slide 8 - 8 Wireless LAN Security WEP (Wired Equivalent Security) 48, 64, 128 for 802.11b,g and 152-bit key for 802.11a Supports Confidentiality – prevents casual eavesdropping Access Control – Authentication of users Data Integrity – prevents tampering with the messages Limitation: does not support key management
Slide 9 - 9 Wireless LAN Security (continued) WPA (WiFi Protected Access) A subset of 802.11i and forward compatible with 802.11i EAP (Extensible Authentication Protocol) Authentication based on 802.1X Temporal Key Integrity Protocol (TKIP) encryption
Slide 10 - 10 Wireless LAN Security (continued) 802.11i Robust Security Network (RSN) is being developed. Uses TKIP and AES for stronger encryption. In design phase, expected in 2005
Slide 11 - 11 Wireless LAN Security (continued) VPN to create a private network over Wireless LAN Creates a virtual tunnel Encrypts data at the sending end and decrypt at the receiving end Uses IPSec, L2TP and PPTP for tunneling, and 3DES and AES for encryption
Slide 12 - 12 Where is WiFi? At work, providing connectivity for those who spend their time in meeting rooms Laptops and most PDAs have WiFi built in Next generation cell phones will be dual mode, GPRS and WiFi At home, where wiring can be expensive and unattractive Flexibility, anywhere in the house, even the backyard In home appliances, allowing control and data transfer Internet connected refrigerator Home entertainment center Hot spots
Slide 13 - 13 How Many Hot Spots? Over 30,000 commercial Access Points (AP) are available today. Reaching 100,000 by end of 2004 Over 4 Million Access Points already sold An organic phenomenon….they are sprouting up everywhere
Slide 14 - 14 Where are the WiFi Hot Spots? Many airports and hotels Most Starbucks coffee shops Most McDonalds restaurants Throughout the streets of Manhattan, San Jose, and numerous other cities Most campuses and academic institutes At base camp on Mount Everest!
Slide 15 - 15 Does speed matter? 802.11b offers a nominal 11 Mbps, but in places with poor coverage, users might achieve speeds of only a few Mbps in certain areas This few Mbps would be shared among all users Short emails, normal VOIP conversations could succeed with these speeds
Slide 16 - 16 Does speed matter? Collaboration on large documents, presentations, exchanging video clips, etc. is frustrating at low speeds 802.11g, with it’s nominal 54 Mbps, should ensure that even in the edges of the coverage area, bandwidth exceeds 10 Mbps, providing more than enough for serious video applications
Slide 17 - 17 The New Mobility – Presence & Availability Presence & Availability change the way business communications is conducted Allows a caller to view the destination’s availability before making the call Allows users to decide who get to see their presence Telephony features such as repeat dialing and camp-on become obsolete Next generation communication products have presence-based call routing
Slide 18 - 18 Wireless Makes Presence and Availability Ubiquitous Wireless LAN technology mobilize these new features allowing Mobile Presence to span conference rooms, meetings, hot-desking and teleworking The high bandwidth of Wireless LAN is the enabling technology, because of frequent presence status changes across all users
Slide 19 - 19 The New Mobility – Instant Messaging Instant Messaging is a real-time text based communication which is less obtrusive than voice calls Allows multiple-IM sessions in parallel Allows multiple-user IM sessions Allows urgent communications during meetings without the disruptive nature of cell phone communication
Slide 20 - 20 The New Mobility – Instant Messaging Highly accessible through firewalls and corporate boundaries Combines internal / external users (using generic IM servers such as MS Passport) Wireless LAN technology enables these new capabilities allowing mobile users and Teleworkers to exchange IMs while in a meeting, on a business trip, and on the go connecting from a hot-spot
Slide 21 - 21 The New Mobility – Video Conferencing Video Conferencing was expensive requiring dedicated video conferencing rooms Per conference room cost of $10- $50K and include the TV sets, video conferencing controller, one or two cameras, foils scanner, ISDN equipment, etc. The bandwidth of such configuration was up to 3 ISDN lines, i.e., 384 Kbps
Slide 22 - 22 The New Mobility – Video Conferencing The new trend is Personal Video Conferencing Low cost USB camera, SW (like MSN Messenger) and IP communications MCU-based or direct peer-to-peer connectivity Costs less than $100 per user
Slide 23 - 23 The New Mobility – Video Conferencing Wireless LAN technology enables mobile video conferencing using a laptop or PDA from a hot spot The high bandwidth allows multiple users to share the bandwidth and still have a high quality conferencing experience
Slide 24 - 24 The New Mobility – Data Collaboration Data Collaboration is the fastest growing communication paradigm WebEx, LiveMeeting, WorkPlace Enables users to share their work across the network Saves travel time and money Data Sharing Application Sharing
Slide 25 - 25 The New Mobility – Data Collaboration Web-based or using proprietary dedicated clients (like Microsoft NetMeeting) Usually combined with voice or video conferencing High-bandwidth wireless LAN technology provides enough bandwidth to allow multiple users to fully participate in a virtual personal video conferencing and data collaboration session!
Slide 26 - 26 OpenScape – An example of the new breed of communications OpenScape creates intelligent relationships among all enterprise communication resources increasing the productivity of both workers and communication services by facilitating rich, successful communications on the first attempt Key Features: One-and-done communications Give the users intelligent control of communications Eliminates unproductive communication steps Eliminates unwelcome communication intrusions Presence aware workgroup collaborations More efficient set-up of group communications Provides a common interaction model for individuals and teams One touch multi-media conferencing at any time Managed coordination of participants and documents Elevate productivity while containing communication costs Provide a powerful SDK Allows ISV’s and SI’s to customize for vertical markets Web service integrations allows partner to deliver unique add to the customer Media Independent Device Independent Application Independent PBX Independence Multi-Platform Access
Slide 27 - 27 Examples of Identity Context Values Individual In Office Working Remotely Be Right Back In Meeting On Business Trip Out Of Office On Vacation No Interruptions Unknown Workgroup Active Inactive
Slide 28 - 28 Scenario: Changing planes at O'Hare, one hour to spare User enters airline lounge, turns on laptop, connects to corporate OpenScape server through WiFi connection using a VPN User reviews presence of some individuals, decides to launch an ad-hoc workgroup collaboration session
Slide 29 - 29 Scenario: Changing planes at O'Hare, one hour to spare User can select headset on PC, or cell phone, based on OpenScape audio rules or current preference Voice conference launched first, more users added on the fly Webex launched mid-session Video can be added as well using camera on laptop
Slide 30 - 30 OpenScape “My Contacts” Portlet
Slide 31 - 31 OpenScape Web Portal
Slide 32 - 32 OpenScape Workgroup Portal
Slide 33 - 33 OpenScape Outlook Access
Slide 34 - 34 Example: WebEx Web Collaboration
Slide 35 - 35 Other devices make it even easier! A smart cell phone Standard PDAs, can handle this task, so a laptop is not even needed Smart phones with PDA features are another option
Slide 36 - 36 Your mobility advantage Users finally have access to a full-suite of collaboration tools almost everywhere Ubiquitous WiFi assures you a high-bandwidth connection almost anywhere A simple cell phone will be looked upon as a primitive device used only for one-to-one voice communications
Slide 37 - 37 The future of mobility A PDA/smart cell-phone with PDA features, or a laptop with headset, will become the preferred device for entering and launching conference calls for mobile workers, teleworkers and travelers WiFi on airplanes extends this phenomenon to the sky (e.g. Connexion by Boeing )
Slide 38 - 38 The future of mobility A new breed of mobile worker is born! Always connected, with no penalty for being mobile. Presence and availability apps make the real difference for mobility. The killer apps are here, and there’s no turning back.
 

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