G2 Microsystems

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G2 Microsystems

• Dr David Crosby

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Company Background

• G2 Microsystems creates system-on-chip solutions
  and tags that leverage the global 802.11
  infrastructure for locating, monitoring and
  tracking assets
• Founded in 2004 by a group from Radiata, a
  start-up company that created the first Wi-Fi
  CMOS implementation, later acquired by Cisco
• Venture-backed with investments from Siemens
  Venture Fund, UPS Strategic Enterprise Fund,
  Starfish Ventures, and Deutsche Asset Management
  Ltd
• Corporate headquarters in Campbell, CA with
  research development in Sydney, Australia

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Product G2C501

• Low-power SoC that uses 802.11 infrastructure to
  locate, sense and track assets

Wi-Fi Access Point

• Multiple location technologies
• Environmental sensing
• Versatile field programmable, secure
  communication
• Multi-year battery life

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G2C501 Functional Blocks

AES, RC4,TKIP, Michael, Hash-MD5, and Hash-SHA1
accelerator
2.4 GHz Low Power Transceiver
Crypto Accelerator
802.11b RSSI Location ISO 24730 TDOA Location
802.11 and ISO 24730-2 PHY and MAC
32-bit CPU Subsystem
General Sensor Interface
eCOS TCP/IP, UDP Security software
Interfaces to sensors for temperature, humidity,
shock, pressure, motion, light, chemical,
security, radiation
125kHz Magnetic Receiver
Digital Interface (External Flash, SPI,GPIO,UART)
Real time clock supports timer wake-up 2KB
Bytes NV memory Power sequencing
Power Management Unit
900 MHz EPC
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802.11 RSSI Based Location

• 802.11b PHY/MAC (1, 2 , 5.5, 11 Mbps)
• Uses existing WiFi infrastructure
• Makes use of existing RSSI-based location
  solutions (e.g. CISCO LBS)

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ISO 24730 Location

• Superset of ANSI 371.1
• TDOA
• DS-CDMA (2.4 GHz)
• 30 Mchip/s (60 MHz)
• 60 kbps
• Accuracy 3m
• Beaconing rates typically 30 seconds to days or
  more

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Electronic Product Code (EPC)

• Emulates a passive RFID tag
• and responds to RFID readers
• Tag location is known when in range of the
  reader
• Range of a few metres

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125 kHz Magnetic Sign Post

• Uses magnetic induction coupling
• Less susceptible than 900 MHz EPC to
  environmental effects
• Wake/reconfigure tag at strategic locations
• Provides better time resolution of tag location
• Range 1-7m, adjustable
• Receive only, 802.11 return path