From the course: 4G LTE: Architecture, Protocols, Call Flows, KPIs, Optimization, Performance Analysis

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LTE coverage: Reference signal received power (RSRP)

LTE coverage: Reference signal received power (RSRP)

From the course: 4G LTE: Architecture, Protocols, Call Flows, KPIs, Optimization, Performance Analysis

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LTE coverage: Reference signal received power (RSRP)

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You are using your phone and the signal seems weak. But how does the network and test equipment measure that weakness with such precision? It doesn't just a guess. It takes a specific scientific measurement from a special set of signals constantly broadcast by every cell tower. And that measurement is termed as RSRP which is reference signal received power. RSRP is the fundamental measure of cellular signal strength. It is not an average of all the radio noise. It is a targeted measurement. It measures the power received only from the cell's reference signals. You can think of these reference signals as unique constant pilot beacons from each tower highlighted in the white boxes on the screen. They are the anchor point your phone uses to find and lock onto the network. The calculation of RSRP includes the average power across these specific reference signals both in frequency and time domain. So RSRP is the linear average over the power distribution of resource elements that carries…

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