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5G NR QCL Types | Type-A,Type-B,Type-C,Type-D

This page describes 5G NR QCL Types. The common 5G NR QCL types include Type-A, Type-B, Type-C and Type-D.QCL stands for Quasi Co Location.

Introduction:
The quasi co-location relationship is configured by the higher layer parameter qcl-Type1 for the first DL RS and qcl-Type2 for the second DL RS (if configured). For the case of two DL RSs, the QCL types shall not be the same, regardless of whether the references are to the same DL RS or different DL RSs. The quasi co-location types corresponding to each downlink (DL) RS (Reference Signal) is given by the higher layer parameter qcl-Type in QCL-Info and may take one of the following values.

Following table mentions 5G NR QCL Types.

QCL type Description
Type-A { Doppler shift, Doppler spread, average delay, delay spread }
Type-B { Doppler shift, Doppler spread }
Type-C { Doppler shift, average delay }
Type-D { Spatial Rx parameter }


References:

• 3GPP TS 38.214 V15.2.0 (2018-06)

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