name: TTI
full_form: Transmission Time Interval
context: In 1.28Mcps TDD, perform RACH TTI selection as follows: RACH may be assigned a 5 ms, 10 ms or 20 ms TTI. If, in one cell, more than one RACH is defined a UE shall select the RACH that is to be used for each transmission according to the following rule: - if only RACHs with one particular TTI length are assigned a transport format that is suitable for the transmission of the transport block set: select this RACH's TTI length. - if more than one RACHs are assigned a transport format that is suitable for the transmission of the transport block set: select the longest of the TTI lengths of these RACHs. In FDD, perform RACH TTI selection as follows: RACH may be assigned a 10 or 20 ms TTI. The supported TTI is indicated as a semi-static parameter of the RACH Transport Format in system information. If only RACHs with one particular TTI length are included in the list of candidate PRACH(s), select this TTI length . If both PRACHs with 10ms and 20ms TTI lengths are included in the list, perform
description: Transmission Time Interval (TTI) is a critical network attribute that defines the time interval for transmission of data in the Random Access Channel (RACH). It affects how user equipment (UE) selects and uses RACH resources for communication with the base station.
explanation: The context explicitly mentions TTI as a parameter influencing RACH selection and usage, highlighting its role in determining transmission timing. This aligns with the definition of a Parameter entity type.
section_title: .3.4RACH TTI selection
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biotag_Description: B-Parameter,I-Parameter,I-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Connection,I-Connection,I-Connection,O,O,O,O,O,O,O,O,O,O,B-Connection,O,O,O,O,O,O,O