When it report this value, it does use the real RSRQ value. UE usually measures RSRP or RSRQ based on the direction (RRC message) from the network and report the value. Since this is the ratio of two different power value, the unit of RSRQ is dB and the value would be always negative (because RSSI value will aways be larger than N x RSRP) By deviding RSRP by RSSI, it could give some information about interference as well in addition to the strength of the wanted signal. Indicates "What is the portion of pure RS power over the whole E-UTRA power recived by the UE".Īs you see, this is not the direct measurement, it is a kind of derived value from RSRP and RSSI. RSRQ is defined as (N x RSRP)/RSSI in 3GPP 36.214, where N is the number of RBs over the measurement bandwidth.Īs you see from the definition of RSSI, RSSI co ntains all sorts of power including power from co-channel serving & non-serving cells, adjacent channel interference, thermal noise, etc.
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