A UE is located somewhere in the cell experiencing a path loss of 100 dB. Let’s consider a single atnenna system and say the Reference Signal Transmitted power is about 12 dBm. RRC_IDLE intra-frequency, RRC_IDLE inter-frequency, RRC_CONNECTED intra-frequency, RRC_CONNECTED inter-frequency. It is applicable while UE in different RRC states i.e. It is very similar to CPICH RSCP in WCDMA. RSRP is the linear average of reference signal power (in Watts) measured over a specified bandwidth (in number of REs). So from the above calculation it can be concluded that if UE is seeing only one cell then there is relation between RSRP and can be directly scaled by the factor for particular bandwidth given in the table1, but UE start seeing more signal on the same frequency from other cell then RSSI value become even better. If RSRP is -60 dBm and the cell is fully loaded (20MHz) and the UE is experiencing 10dBm power from a Neighbour cell operating at same frequency RSSI measured -60 dBm + 30.72 dBm +10 dBm = -19.98 dBm. Where N represents number of resource block.īy using above equation RSSI can be calculated as: Under full Load condition the RSRP (dBm)= RSSI – 10*log (12*N) RSSI = Serving Cell Power + Neighbour Co-Channel Cells Power + Thermal Noise RSSI is also a power and its measurement unit is dBm The RSSI is used in the calculation of RSRQ in LTE system. RSSI is defined as the total received wide-band power measured over entire bandwidth by UE. Received Signal Strength Indicator ( RSSI): RSRP, RSRQ, RSSI ) are included in the RRC Information Elements (IEs) carries. Reference Signal Received Quality (RSRQ).Received Signal Strength Indicator (RSSI).

Reference Signal (RS) measurements are further classified into three measurement parameters as given below: In 5G new radio (NR) system, reference signal measurement are used to perform cell selection, cell reselection and handover etc.

Rsrp dbm