Rohde & Schwarz SMW-K144 - Synchronization Signals and SS;PBCH Block

About the 5G New Radio Option
R&S
®
SMW-K144
17User Manual 1178.8013.02 ─ 06
1 = Aligned centers of the first subcarrier (SC#0) of resource blocks
Point A = Common reference point for all numerologies and TxBWs; does not have to be within the
carrier bandwidth. Point A is the center of subcarrier#0 of the CRB#0
Carrier center = Center frequency of the carrier
Δf = Offset between the carrier center frequency and the reference point A, see Point A to Car-
rier Center.
From all possible TxBWs for a specific channel bandwidth, the base station decides
which TxBWs to use. The base station/network signals the position of the used TxBWs
to the users as function of the following:
●
The position of the Reference point A, that is common to all numerologies.
●
The frequency offset ΔRB between the usable resource blocks of the TxBWs and
the Reference point A, see TxBW Offset.
●
The used frequency shift k
0
μ
= {-6, 0, 6}, see k0u.
3.7 Synchronization Signals and SS/PBCH Block
The 3GPP specifies two synchronization signals (SS), the primary synchronization sig-
nal (PSS) and the secondary synchronization signal (SSS). Together with the physical
broadcast channel (PBCH), they are bundled in a synchronization signal block (SS/
PBCH block). PSS/SSS are used for radio frame synchronization and detection of the
physical layer cell ID. The location of the synchronization signal is variable.
The PBCH carries general system information. It is polar-coded and QPSK modulated.
The PBCH symbols carry its own DMRS, which position depends on the physical layer
cell ID.
An SS/PBCH block is transmitted on a fixed schedule. Each half-frame contains of
either 4, 8 or 64 SS/PBCH blocks, depending on the subcarrier spacing (SCS). The
SS/PBCH block is transmitted twice in a slot, if that slot carries the synchronization sig-
nal.
Synchronization Signals and SS/PBCH Block