D2-Short Range Systems

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⌘ Short range communication

Short range communication systems covers both industrial and end-customer applications, and is often used for sensor communications. The majority of systems follow the 802.15.3 standard for the physical layer, but have adopted the MAC and the application layers to their requirements.

Presentations from earlier years

Wireless HART, ++ISO100

see also earlier lecture WiMAX_and_WirelessHART

⌘ USB speed

FettweisRadioDevelopment.png

[Presentation G. Fettweis, IEEE VTC forum Baltimore], http://www.ieeevtc.org/plenaries/vtc2007fall/28.pdf

⌘ Wireless follows wired in speed

by Thomas Aasebø


ANT
Bluetooth (v1.x, v2.x --> 3.x)
Bluetooth low power
ZigBee
Frequency
2.4 GHz
2.4 GHz
2.4 GHz
2.4 GHz, 915 MHz, 868 MHz
Modulation
GFSK
GFSK
GFSK (almost GMSK)
O-QPSK, BPSK, BPSK
RF Raw Data Rate
1 Mbps 1 Mbps, 3 Mbps
1 Mbps
250 Kbps, 40 Kbps, 20 Kbps
Application Throughput 20 Kbps 0.7 Kbps, 2.1 Kbps  305 Kbps 10-115.2 Kbps
Max Range 30 m 100 m 50 m 100 m
Frequency Channels
125
79
40
16, 10, 1
Supported Network Types
Star, Peer-to-Peer
Peer-to-Peer, scatternet
Star, Peer-to-Peer
Star, Peer-to-Peer

References

by Thomas Aasebø:


Test yourself, answer these questions

  • What is WirelessHART?
  • What radio technology is used (WirelessHART)?
  • What network topologies are supported (WirelessHART)?
  • What are the main parts of a WiHART network?
  • How does channel hopping work?