Physical Layer Measurements

[Simons-CSharp]

Description

Have physical measurements of the 5G layer available in the rt-mbms-modem log file or as part of the Receive Process API

Background & Important terms

When measuring a test site the 5G NR signal strength is indicated by
Secondary Synchronisation Signal RSRP (SSS-RSRP) (normally in dBm)
and quality is given as
Secondary Synchronisation Signal RSRQ (SSS-RSRQ) (normally in dB)

Wideband RSSI would be advantageous too (in dBm)

Definition of SSS-RSRP:
Secondary synchronization signal reference signal received power (SSS-RSRP) is defined as the linear average over the power contributions (in [W]) of the resource elements that carry secondary synchronization signals (SSS).

definition of SSS-RSRQ
Secondary synchronization signal reference signal received quality (SSS-RSRQ) is defined as the ratio of NSS-RSRP / NR carrier RSSI, where N is the number of resource blocks in the NR carrier RSSI measurement bandwidth.

Implementation steps & recommendations

An additional rpApiPhysical added to the Receive Process - Have the RSRP, RSRQ, RSSI, CINR and PCI grouped here.

Related specifications

ref 3GPP 38.331, 38.215 and 38.133.