User's Manual

A-4 Glossary
T
Time Slot
A unit of time assigned to each ESL during which a CBS transmits
either a downlink message to an ESL, or receives
acknowledgements (ACKs) back from an ESL. Each CBS is assigned
2 time slots.
U
Uplink
An uplink is an acknowledgment message (ACK) sent from an ESL
to a CBS in response to a downlink burst.