ETSI update on Radio Frequency Identification

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ETSI update on Radio Frequency Identification
SOURCE ETSI
TITLE ETSI update on Radio Frequency Identification
AGENDA ITEM 5.6
CONTACT ETSI
GRSC4(06)12

• ETSI

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Background

• ETSI standard EN302 208 published Sep 04
• Key features
• Mandatory listen before talk at a threshold
  level of 96 dBm
• Operation in 15 sub-bands of 200 kHz in the band
  865.0 868.0 MHz
• Transmit powers up to 2 W e.r.p. for maximum
  continuous transmission of 4 sec on any single
  sub-band

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Code of Practice (ETSI TR 102 436)

• Purpose of document
• Recommendations to installers and system
  integrators on good installation practice
• Useful guide to end users on capabilities of the
  technology.
• Supported by practical tests and installations

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Main Challenges

• Avoidance of unwanted tags
• Minimising interference between adjacent lanes
• Improving reading performance
• Simultaneous operation of multiple interrogators
  that are in close proximity

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Portals

• Pre-fabricated for ease of installation
• Lined with e.m. absorbent material to minimise
  reflections
• Antennas with beamwidths of less than 30 degrees

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Conclusions from Trial

• Feasible to read 91 of tags at high speed and
  95 at low speed with 3 portals operating
  simultaneously on adjacent sub-bands
• The portals substantially reduced both the
  probability of reading unwanted tags and
  interference between adjacent lanes.
• Tx times of 2s at portals should be satisfactory
  for many dock door applications.

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Further work

• Development of techniques that will permit many
  interrogators in close proximity to transmit
  simultaneously
• Further improvements to reading performance
• In response to EU initiative, consideration of
  future spectrum requirements to handle mass
  deployment of RFID at UHF