CSL CS101-2 EPC CLASS 1 GEN 2 RFID HANDHELD READER
USER'S MANUAL, VERSION 1.0
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strong tags from dominating the week ones.
Session
An inventory process comprising an Interrogator and an associated Tag population. An
Interrogator chooses one of four sessions and inventories Tags within that session. The
Interrogator and associated Tag population operate in one and only one session for the duration
of an inventory round (defined above). For each session, Tags maintain a corresponding
inventoried flag. Sessions allow Tags to keep track of their inventoried status separately for
each of four possible time-interleaved inventory processes, using an independent inventoried
flag for each process.
Single-Interrogator environment
An operating environment (defined above) within which there is a single active Interrogator at
any given time.
Singulation
Identifying an individual Tag in a multiple-Tag environment.
Slot
Slot corresponds to the point in an inventory round at which a Tag may respond. Slot is the
value output by a Tag’s slot counter; Tags reply when their slot (i.e. the value in their slot
counter) is zero. See also Q (above).
Slotted random anticollision
An anticollision algorithm where Tags load a random (or pseudo-random) number into a slot
counter, decrement this slot counter based on Interrogator commands, and reply to the
Interrogator when their slot counter reaches zero.
Tag-identification layer
Collectively, the set of functions and commands used by an Interrogator to identify and modify
Tags (also known as the operating procedure).
Tari
Reference time interval for a data-0 in Interrogator-to-Tag signaling. The mnemonic “Tari”
derives from the ISO/IEC 18000-6 (part A) specification, in which Tari is an abbreviation for
Type A Reference Interval.
Trigger
