name: RACH
full_form: Random Access Channel
context: The IE SI-RequestConfig contains configuration for Msg1 based SI request without Msg1 repetition. SI-RequestConfig information element -- ASN1START -- TAG-SI-REQUESTCONFIG-START SI-RequestConfig ::= SEQUENCE { rach-OccasionsSI SEQUENCE { rach-ConfigSI RACH-ConfigGeneric, ssb-perRACH-Occasion ENUMERATED {oneEighth, oneFourth, oneHalf, one, two, four, eight, sixteen} } OPTIONAL, -- Need R si-RequestPeriod ENUMERATED {one, two, four, six, eight, ten, twelve, sixteen} OPTIONAL, -- Need R si-RequestResources SEQUENCE (SIZE (1..maxSI-Message)) OF SI-RequestResources } SI-RequestResources ::= SEQUENCE { ra-PreambleStartIndex INTEGER (0..63), ra-AssociationPeriodIndex INTEGER (0..15) OPTIONAL, -- Need R ra-ssb-OccasionMaskIndex INTEGER (0..15) OPTIONAL -- Need R } -- TAG-SI-REQUESTCONFIG-STOP -- ASN1STOP
description: The Random Access Channel (RACH) is a critical uplink channel in cellular networks, used by user equipment (UE) to initiate communication with the base station. It is primarily utilized for random access procedures, allowing UEs to request resources for data transmission or signaling. The configuration of RACH occasions and associated parameters, such as the number of preambles, association periods, and SSB occasion masks, are essential for efficient network operation and are specified within the 3GPP standards.
explanation: RACH is classified as a Channel because it refers to a specific path or medium through which data is transmitted from the user equipment to the base station in cellular networks. The provided context highlights its role in random access procedures, aligning with the definition of a channel in telecommunications.
section_title: â SI-RequestConfig
biotag_Context: O,B-Message,O,O,O,O,O,O,B-Miscellaneous,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,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,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O
biotag_Description: O,B-Connection,I-Connection,I-Connection,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-Device,O,O,O,O,O,O,O,O,O,O,O,B-Connection,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Miscellaneous,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Organization,O