EPC™ Radio-Frequency Identity Protocols EPC Class-1 HF RFID Air Interface Protocol for Communications at 13.56 MHz

This document relates to radio-frequency identification, which is used to identify and track tags that are attached to particular objects. It specifies the physical interactions (the signalling layer of the communication link) between interrogators and tags; interrogator and tag operating procedures and commands; and the collision arbitration scheme used to identify a specific tag in a multiple-tag environment.

Main sections:

· Scope

· Conformance

· Normative references

· Terms and definitions

· Symbols (and abbreviated terms)

· Requirements: Physical layer, collision management system and protocol values for 13,56MHz systems

· Marking of equipment

· Annex: (normative) State-transition tables

· Annex: (normative) Command-Response tables

· Annex: (informative) Example slot-count (Q) selection algorithm

· Annex: (informative) Example of tag inventory and access

· Annex: (informative) Calculation of 5-bit and 16-bit cyclic redundancy checks

· Annex: (informative) Phase Jitter Modulation (PJM)

· Annex: (informative) ASK Method: Interrogator-to-tag link modulation

· Annex: (normative) Error codes

· Annex: (normative) Slot counter

· Annex: (informative) Example data-flow exchange

· (informative) Optional Tag Features