Rsrp、rsrq、sinr

1. RSRP、RSRQ、SINR
Reporter: Richard.Su

2. RSRQ = RSRP/(RSSI/N)
= RSRP*N/(IN_n + ρ*12*N*Psc)
SINR=S/(IN_m)
Where
N is # of PRBs(per cell resource blocks) for RSRQ
M is # of PRBs allocated to UE based on which SINR is measured
Psc is average Rx power per subcarrier. In case of no power boost for RS, Psc=RSRP.
IN_n is Interference plus noise over N PRBs used for RSRQ measurement
IN_m is Interference plus noise measured over M PRBs allocated to UE (for SINR).
In case that I+N is evenly distributed in all PRBs, then IN_n/N = IN_m/M.
ρ: loading (% of subcarriers transmitted) over N PRBs for RSRQ
S=Psc*M*12 is signal power.
Without RS power boost and with evenly distributed interference over all PRBs, we
have RSRQ = 1/[(1/SINR+ ρ)*12]

3. Relation between SINR and RSRQ