name: PRACH
full_form: Physical Random Access CHannel
context: The PRACH occasions are mapped consecutively per corresponding SS/PBCH block index. The indexing of the PRACH occasion indicated by the mask index value is reset per mapping cycle of consecutive PRACH occasions per SS/PBCH block index. The UE selects for a PRACH transmission the PRACH occasion indicated by PRACH mask index value for the indicated SS/PBCH block index in the first available mapping cycle. For the indicated preamble index, the ordering of the PRACH occasions is - First, in increasing order of frequency resource indexes for frequency multiplexed PRACH occasions - Second, in increasing order of time resource indexes for time multiplexed PRACH occasions within a PRACH slot - Third, in increasing order of indexes for PRACH slots For a PRACH transmission with preamble repetitions, all respective valid PRACH occasions are consecutive in time, use same frequency resources, and are associated with a same SS/PBCH block index. For a PRACH transmission with preamble repetitions, a
description: The Physical Random Access Channel (PRACH) is a communication link used by the User Equipment (UE) to initiate random access procedures in the 5G New Radio (NR) system. It is responsible for carrying random access preambles, which are used for synchronization and initial access to the network.
explanation: The context describes PRACH as a channel facilitating communication between the UE and the network for initiating connections, aligning with the definition of a connection.
section_title: 8.1Random access preamble
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biotag_Description: O,B-Connection,I-Connection,I-Connection,I-Connection,O,O,O,O,O,O,O,O,B-Device,I-Device,O,O,O,O,O,O,O,O,B-Technology,B-Technology,I-Technology,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O