B.2.7 IFF+DFF

38.508-13GPP5GSPart 1: Common test environmentRelease 17TSUser Equipment (UE) conformance specification

B.2.7.1 Description

The IFF+DFF method is utilizing a combination of compact antenna test ranges (CATRs) and DFF probes for RRM testing with two simultaneously active AoA (NMAX_AoAs = 2) as defined in Clause 7.1.3.

An example RRM baseline system using the IFF+DFF setup is shown in Figure B.2.7.1-1. Implementations of the RRM baseline system with only a subset of the probes are possible as long as the system can satisfy the relative angular relationships outlined in Clause 7.1.3.2.1.

Figure B.2.7.1-1: Example RRM baseline system with two simultaneously active AoA using an IFF+DFF setup

The key aspects of this test method setup are the same as the IFF setup for the probes based on the IFF method, outlined in B.2.4.1 and the DFF setup for the probes based on the DFF method, outlined in Clause B.2.2.1.

B.2.7.2 Quiet zone dimension

Same as Clause B.2.2.2.

B.2.7.3 Quality of the quiet zone

Same as Clause B.2.2.3.

B.2.7.4 Measurement Distance

Same as Clause B.2.4.4 for the IFF setup for the probes based on the IFF method and Clause B.2.2.4 for the DFF setup for the probes based on the DFF method.

Annex C (informative):
Calculation of test frequencies