TBF – Temporary Block Flow
A Temporary Block Flow is a physical connection used by the two RR (Radio Resource) entities to support the unidirectional transfer of LLC (Logical Link Control) PDU (Protocol Data Unit) on packet data physical channels. A TBF is temporary and is maintained only for the duration of the data transfer, i.e. until there are no more RLC (Radio Link Control) / MAC (Medium Access Control) blocks to be transmitted.
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