D.2 FR2 Base Station beam configuration

38.1513GPPNRRelease 17TSUser Equipment (UE) Multiple Input Multiple Output (MIMO) Over-the-Air (OTA) performance requirements

The emulated BS beam configuration to be used for emulation of channel model defined in Annex D.1 is specified in this clause.

The Base Station beam configuration includes basic antenna parameters and beamforming characteristic. The basic BS antenna parameters is defined in Table D.2-1.

Table D.2-1: FR2 BS Antenna Parameters

Parameter description

Symbol

Parameter value

FR2

Antenna panels in vertical dimension

Mg

1

Antenna panels in horizontal dimension

Ng

1

Elements per panel in vertical dimension

Me

8

Elements per panel in horizontal dimension

Ne

16

Number of polarizations per panel

P

2

Element spacing in horizontal dimension ()

dH

0.5

Element spacing in vertical dimension ()

dV

0.5

Antenna element radiation patterns, including orientation of the element main polarization components as well as orientation of the antenna array are as in the example pattern in Table 7.3-1 of TR38.901. The antenna element has ±45 polarization components and the radiation pattern parameters are 3dB = 65, 3dB = 65, Amax = 30dB, SLAv = 30dB, GE,max =8 dBi.

The beamforming characteristic of the FR2 BS pattern is defined as follow:

– A code book of 128 fixed beams is constructed to a grid of eight elevation angles from –25 to +25 with ~7.1 step size and 16 azimuth angles from –60 to +60 with 8 step size;

– 1 strongest transmitting beam is generated from BS, the direction of this beam towards the strongest cluster of the FR2 channel model. Specifically, the direction in UMi CDL-C model is: AoD: -12o, ZoD: 100.71o