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ETSI update on Radio Frequency Identification
SOURCE: ETSI TITLE: ETSI update on Radio Frequency Identification AGENDA ITEM: 5.6 CONTACT: GRSC4(06)12 ETSI update on Radio Frequency Identification ETSI GSC: Standardization Advancing Global Communications
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GSC: Standardization Advancing Global Communications
Background ETSI standard EN 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 – MHz Transmit powers up to 2 W e.r.p. for maximum continuous transmission of 4 sec on any single sub-band GSC: Standardization Advancing Global Communications
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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 GSC: Standardization Advancing Global Communications
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GSC: Standardization Advancing Global Communications
Main Challenges Avoidance of unwanted tags Minimising interference between adjacent lanes Improving reading performance Simultaneous operation of multiple interrogators that are in close proximity GSC: Standardization Advancing Global Communications
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GSC: Standardization Advancing Global Communications
Portals Pre-fabricated for ease of installation Lined with e.m. absorbent material to minimise reflections Antennas with beamwidths of less than 30 degrees GSC: Standardization Advancing Global Communications
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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. GSC: Standardization Advancing Global Communications
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GSC: Standardization Advancing Global Communications
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 GSC: Standardization Advancing Global Communications
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