Q

By Doug

In the Gen 2 air interface protocol, Q is a parameter that a reader uses to regulate the probability of tag response. A reader commands tags in an inventory round to choose a random number between zero and 2^Q; a tag may be successfully singulated if no other tags choose the same random number (a "collision"). Larger Q values decrease the probability of collision, but require the reader to spend more time during singulation....

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In the Gen 2 air interface protocol, Q is a parameter that a reader uses to regulate the probability of tag response. A reader commands tags in an
inventory round to choose a random number between zero and 2^Q; a tag
may be successfully singulated if no other tags choose the same random
number (a “collision”). Larger Q values decrease the probability of collision,
but require the reader to spend more time during singulation.