name: TFCI
full_form: Transport Format Combination Indicator
context: for CSG deployment and this reserved PSC range may be signalled in system rmation. The PSC of a CSG cell belongs to the reserved PSC range if broadcast. On the mixed carrier frequency shared by both non-CSG cells (UMTS macro cells) and CSG cells, CSG cells broadcast in system rmation the PSC range reserved by the network for CSG cells. The non-CSG cells may also broadcast the reserved PSC range. The reserved PSC range is only applicable to the UARFCN within the PLMN where the UE received this rmation. The UE considers the last received reserved PSC range to be valid within the entire PLMN for the duration of 24 hours. The UE may use the reserved PSC rmation for CSG cell search and (re)selection purposes, according to UEâs implementation. NOTE: In shared network scenario, aligned PSC ranges are beneficial in the shared carrier frequency across the involved PLMNs. Furthermore, in deployments where cells broadcast different primary PLMN (with or without multiple PLMN IDs), it is
description: The Transport Format Combination Indicator (TFCI) is a parameter used in mapping code words to bit positions in a time slot, specifically in 3GPP TS 25.928. The TFCI code word has a variable number of bits (NTFCI), mapped onto specific bit positions within a time slot according to defined rules based on the TFCI length (6, 12, 24, or 48 bits).
explanation: The text describes TFCI as a parameter that controls the mapping of code words in a telecommunications system. Its variable length and rule-based mapping highlight its function as a configurable setting rather than a fundamental component.
section_title: 8.2.1.1.3	Mapping of TFCI code word
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