Wayne Caswell Home RF Communications Chairman Networking The

Wayne Caswell Home. RF Communications Chairman Networking The Household Home. NET Forum: Winter 2001 Separating the Home from the Workplace

Separating the Home from the Workplace n Do Technologies move Upmarket or Down? n Telecommuting & Mobility (Benefits of Work-at-Home) n Environmental Differences (Home Network issues) n Application Differences

Do Technologies move Up-market or Down? Enterprises loaded OS/2. Window was preloaded. Users familiar with Windows. IBM PC introduced in 1981, but not sold in Enterprises until 1984.

Technologies move Up-market, not Down. CD-ROM, Sound Card, DVD Mobile Phones Digital Cameras, Color Printers Peer Networking Even Sales Force Automation

Telecommuting & Mobility BENEFITS n Improved Morale (60%) n Employee Work / Life Balance (43%) n Office Real Estate Savings (33%) n Flexibility in Hiring (parent w/ kids) n More Customer Face-time The 15 second commute. ROAD BLOCKS n Mid-Management Objection (25%) n Inadequate IT (19%) (Source: Kinetic Workplace survey prior to September 11) Always available.

Environmental Differences - Enterprise Offices n n n Hollow Walls Hung Ceilings Raised Floors NW Administrators Corporate Budget Hard Surfaces (wireless reflections) Similarity n Desktop PCs dominate

Environmental Differences - Homes n n n n Fire Blocks Slab Foundations Land Lords Local Mobility Ethernet along Voice, Data, Music, TV the baseboard Mom (as admin? ) Personal Budget Soft Carpet (wireless absorption) and to adjacent bedrooms Similarity n Desktop PCs dominate Wireless for Convenience

Application Differences - Enterprise Offices n n Data Applications • • E-mail Microsoft Office Application Servers SAP Remote Access • • • Customers, Homes, Hotels VPN Security Campus Roaming (wireless)

Application Differences - Homes n Extends Beyond DATA • • n E-mail, Web browsing, Gaming, Photo editing, Microsoft Works Digital Music Television Telephone Communications Local Mobility • Some Remote Access through Home Gateway

Information, Communications, and Entertainment Markets are Converging Entertainment Set Top Box Home Networking Voice, Data, and Entertainment Mo d e n ho P BROADBAND em Web Pad Cable, x. DSL, . . . x. DSL, Communication PDA Information

US Cordless Phone Market +9% +11% 900 MHz +37% 2. 4 GHz +27% Sources : CEA & Intersil

Multi-Line, Multi-User Phones are Voice Only Home Networks Voice Device POTS ISDN Voice Device

True Home Networking includes Information, Communications, Entertainment POTS ISDN x. DSL Cable

Home. RF Network Layers Existing Upper Layers UDP TCP IP DECT Home. RF MAC Layer CSMA/CA Priority CSMA TDMA Home. RF PHY Layer “Ethernet” Data Path Streaming Media Path Toll-Quality Voice Path

PC Services on Handset Display PC controls the handset display, receives all key presses. First Step: Text menus Text display Next Steps: Scripting Extensions UPn. P Proxy SDK Speech recognition Text-to-Speech

Bandwidth Requirements

Wireless Choices for the Broadband Internet home ATTRIBUTE Home. RF Bluetooth ~ 802. 11 b Cost Security ~ Interference Immunity Toll-Quality Voice Support ~ Streaming Media Support ~ Data Throughput X Range X Power Consumption X ~ Form Factor X ~ Network Topology ~ ~ Roaming Outside the Home ~ ~ ~ Legend: - Advantage ~ - Adequate X X ~ X - Disadvantage

Homes have More Absorption, Less Reflection Signals can arrive at different times and cancel each other out.

RANGE: Signal Strength Diminishes with Distance 1 Mbps 2 Mbps 5 Mbps Advertised Data Rate: 11 Mbps 0’ 50’ 90’ 130’ ~5 Mbps ~2. 5 Mbps Throughput ~1 Mbps ~0. 5 Mbps 300’

Performance over Distance Nominal throughput (Mbps) Home. RF 2. 0 vs. 802. 11 b Home. RF provides real-time media streaming to more nodes over a greater distance. 6 5 4 MPEG 2 Video 3 2 1 Broadband/ MPG 4 Video Dial-up / MP 3 Audio 0 10' 20' 30' 40' 50' 60' 70' 802. 11 b 90' 100' 110' 120' 130' 140' 150' HRF 2. 0 Source: Practical and Theoretical Calculations

Wood and plaster Walls or Floors are OK. Even Brick. BUILDING WALL ATTENUATION: Signal Strength Diminishes through Materials Metal and thick rock block the RF signals. The Higher the Frequency, the more signal loss. 5 GHz is worse than 2. 4 GHz.

Home. RF Does Not Compromise Security … BUILDING WALL … Like Wi-Fi Does Trivial task to bypass Wi-Fi security w/ standard products

Gateways offer Firewall Security But Power Line & RF extend Outdoors, so beware of Compromises! Ethernet Home. PNA or Home. Plug Internet

Home. RF is Neighbor Friendly ideal for Broadband avoids Interference

Home. RF Hops Out of Interference DSSS Frequency FHSS Time IEEE 802. 11 b waits for Interference to go away

Home. RF

Thank you Wayne. Caswell@ ICM. Siemens. com