What is CFRA parameters in NR? Where it will be used?

Answer 1

Hi jaganathan,

This is a configuration used for Contention free rach access for HO and other access.This will be included if gNB sending Mobility infor for HO to target cell. sample CFRA params as below.

CFRA-SSB-Resource ::= SEQUENCE {

ssb                   SSB-Index,

ra-PreambleIndex      INTEGER (0..63),

...

}

CFRA-CSIRS-Resource ::= SEQUENCE {

csi-RS                CSI-RS-Index,

ra-OccasionList       SEQUENCE (SIZE(1..maxRA-OccasionsPerCSIRS))

                           OF INTEGER (0..maxRA-Occasions-1),

ra-PreambleIndex INTEGER (0..63),

...

}