学习笔记-38.331协议

dmrs-Type

 

DMRS-DownlinkConfig field descriptions

dmrs-TypeA-Position

Position of (first) DM-RS for downlink (see 38.211, section 7.4.1.1.1) and uplink (38.211, section 6.4.1.1.3).

dmrs-AdditionalPosition

Position for additional DM-RS in DL, see Tables 7.4.1.1.2-3 and 7.4.1.1.2-4 in 38.211. If the field is absent, the UE applies the value pos2. See also section 7.4.1.1.2 for additional constraints on how the network may set this field depending on the setting of other fields.

maxLength

The maximum number of OFDM symbols for DL front loaded DMRS. 'len1' corresponds to value 1. 'len2 corresponds to value 2. If the field is absent, the UE applies value len1. If set to len2, the UE determines the actual number of DM-RS symbols by the associated DCI. (see 38.214, section 7.4.1.1.2)