name: PRACH
full_form: Physical Random Access Channel
context: non-BL/CE UEs there are up to two PRACH configurations in a cell. The first PRACH configuration is configured by higher layers with a PRACH configuration index (prach-ConfigurationIndex) and a PRACH frequency offset (prach-FrequencyOffset). The second PRACH configuration (if any) is configured by higher layers with a PRACH configuration index (prach-ConfigurationIndexHighSpeed) and a PRACH frequency offset (prach-FrequencyOffsetHighSpeed). For BL/CE UEs, for each PRACH coverage enhancement level, there is a PRACH configuration configured by higher layers with a PRACH configuration index (prach-ConfigurationIndex), a PRACH frequency offset (prach-FrequencyOffset), a number of PRACH repetitions per attempt (numRepetitionPerPreambleAttempt) and optionally a PRACH starting subframe periodicity (prach-StartingSubframe). PRACH of preamble format 0-3 is transmitted times, whereas PRACH of preamble format 4 is transmitted one time only. For BL/CE UEs and for each PRACH coverage enhancement
description: The Physical Random Access Channel (PRACH) is a channel in the LTE uplink used for random access, allowing user equipment to initiate connection with the base station. It has multiple configurations that can be set by higher layers, including parameters such as PRACH configuration index and frequency offset, which vary depending on whether the UE is operating in non-BL/CE mode or BL/CE mode with different coverage enhancement levels.
explanation: PRACH is classified as a Channel because it refers to a specific path for data transmission in the LTE uplink. The context describes its configuration and usage in detail, highlighting its role in facilitating random access from user equipment to the base station.
section_title: 5.7.1	Time and frequency structure
biotag_Context: O,B-Device,O,O,O,O,O,B-Connection,O,O,O,O,O,O,B-Connection,O,O,O,O,O,O,O,O,B-Connection,O,O,O,O,O,B-Connection,O,O,O,O,O,B-Connection,O,O,O,O,O,O,O,O,O,O,B-Connection,O,O,O,O,O,B-Connection,O,O,O,O,O,O,O,O,B-Connection,O,O,O,O,O,O,B-Connection,O,O,O,O,O,O,O,B-Connection,O,O,O,O,B-Connection,O,O,O,O,O,O,B-Connection,O,O,O,O,O,O,O,B-Connection,O,O,O,O,B-Connection,O,O,O,O,O,O,O,O,B-Connection,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,B-Connection,O,O
biotag_Description: O,B-Connection,I-Connection,I-Connection,I-Connection,O,O,O,O,O,O,B-Technology,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Connection,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O