name: TFC
full_form: Transport Format Combination
context: In the subsequent chapters, a new mechanism and related L1 signalling are introduced. The purpose is to enable the Node B to have a fast control over the TFC subset allowed to be used by the TFC selection algorithm of the UE. This is to be achieved by defining two TFC subsets of the TFCS (A "Node B allowed TFC subset" and a "UE allowed TFC subset"), and control signalling for adjusting these subsets. Node B provides UE with an allowed TFC subset" from which the UE's TFC selection algorithm selects a TFC to be used by employing the TFC selection method defined in Rel'99/Rel'4/Rel'5 specifications. This TFC subset provided by the Node B is is named the âUE allowed TFC subsetâ. In order to give RNC efficient control over the "UE allowed TFC subset" primarily controlled by the Node B, the RNC provides the Node B with a second TFC subset named âNode B allowed TFC subsetâ. Node B defines and freely reconfigures the "UE allowed TFC subset" as a subset of the "Node B allowed TFC subset". It is
description: Transport Format Combination (TFC) refers to a set of transport formats that can be used for uplink transmission in a wireless communication system. In this context, TFC subsets are defined and controlled by the Node B and RNC to restrict the allowed uplink TFCs in a TFCS (Transport Format Combination Set). The Node B provides the UE with an allowed TFC subset, named 'UE allowed TFC subset', from which the UE's TFC selection algorithm selects a TFC. Additionally, the RNC provides the Node B with another TFC subset, named 'Node B allowed TFC subset', to give efficient control over the 'UE allowed TFC subset'.
explanation: TFC is classified as a Parameter because it refers to a specific configuration setting used in the uplink transmission process. The context highlights how TFC subsets are defined and controlled by network elements (Node B and RNC) to manage the allowed transport formats for uplink transmission.
section_title: 7.1.1.3	Restricting the Allowed Uplink TFCs in a TFCS by L1 Signalling
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