Will Mesh Networking Become Mainstream? Jim Freebersyser Technology Strategy & Business Development Honeywell - Aerospace Electronic Systems, Centers of Excellence 3660 Technology Drive (MN65-2600), Minneapolis, MN 55418 V 612 951 7352 F 612 951 7438 C 612 280 4014 [email protected]Mesh Networking Summit 2004 23 – 24 June 2004 – Snoqualmie, WA
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Will Mesh Networking Become Mainstream?
Jim FreebersyserTechnology Strategy & Business Development
• Space / Planetary Exploration– Presidential manned space initiative
• Industrial Controls– Factory automation, maintenance, safety, and security
• Inter/Intra Home Mesh Networking– Implemented by Rooftop (among others) in the late 90s
No Application Has Achieved Mass Market Status, Yet…
Aerospace Electronic Systems 6/4/2004 - 5
Inter/Intra Home Mesh NetworkingInter/Intra Home Mesh NetworkingInter/Intra Home Mesh NetworkingInter/Intra Home Mesh Networking• Intra is now happening for nomadic users (because someone can make $)
– Fixed hotspots - coffee shops, hotels, airports, etc.
– Mobile hotspots - Trains, planes, buses, and ships
• Can do hotspots at home, but if not nomadic, wires are better– Data rate, reliability, security, etc.
• How might the mass market develop for Inter/Intra develop?– The “Cringely” example: School fund raiser creates a useful mesh density
– Up front cost for infrastructure but then free “dial-up”-like performance
• Technological/sociological roadblocks still exist– Security
– Resource sharing (fairness)
– Legal/Law enforcement
• Will regulatory/competitive forces prevent development of mass market?– Does sufficient unlicensed spectrum exist to support?
Do dynamic spectrum sharing approaches address this challenge?
– This approach will be resisted by the current service providers Not a problem if there is no incumbent/infrastructure, which is the case for many areas
– Standalone as well as able to attach to infrastructure (hot spots, etc.)
• Lower Bar for Success for (Kids) Gaming– Sufficient unlicensed spectrum exists (No .ppt or web pages files)
– No incumbent to overcome; a new (but adjacent) market for all players
– “Real” security is not an issue (maybe hacking is part of the game?)
• A Commercial Market (PS2/XBox-like) Would Lower Cost to $100s – DoD wants this Now for every dismount but can’t afford it (batteries)
– Other applications and markets would develop
Display and Entry
WirelessMAC/PHY
NetworkRouting
Geo-location
Range Finder?
Games
Other Applications
Battery
Palm, iPaq, etc.
802.11x Software GPS, IMU, map, compass
Laser tape measure
Doom, D and D, etc.
Calendar, Datebook, Tetris, etc.
4 hours of battery life before recharge
Exists - ~$200
Exists -~$100
Exists - Free w/ Device
Develop -Target of $100?
Exists -$35
Develop - $ and free
Exists - Free w/ device
Exists - Free w/ device
Aerospace Electronic Systems 6/4/2004 - 7
Stepping on My Technical Soapbox…Stepping on My Technical Soapbox…Stepping on My Technical Soapbox…Stepping on My Technical Soapbox…
• Default Media Access Control (MAC) approaches (e.g. 802.11x) are inefficient when used in Mesh/MANET contexts vice the AP/cellular context for which they were designed– Hidden terminal/exposed node; QoS/congestion; etc.
• So why does everyone use it? Its cheap!– The MAC is embedded in the cheap radio and can’t be modified very easily
• The MAC challenge has received insufficient attention in comparison to the PHY and routing challenges– Is it a EE/PHY/Radio problem or is it a CS/NET/Router problem
– An integrated/cross-layer approach is preferred
• The community will have to move away from stochastic (e.g. RCDA) approaches to deterministic approaches (e.g. TDMA) for QoS– Timing is now free from GPS
– Needs attention in standards bodies which traditionally are routing focused