RSRP(Reference Signal Recieved Power) RSRP is the linear average of reference singal power (in Watts) accorss the specified bandwid number of REs). This is the most important item UE has to measure for cell selection, reselec and handover. You can think of this as the one similar to CPICH RSCP in WCDMA. Following is an example of one downlink radio frame. The red part is the resource elements in reference signal is being transmitted. RSRP is the linear average of all the red part power.
RSRP is the linear average of reference singal power (in Watts)
accorss the specified bandwidth (in number of REs). This is the
most important item UE has to measure for cell selection,
reselection and handover. You can think of this as the one similar
to CPICH RSCP in WCDMA.Following is an example of one downlink
radio frame. The red part is the resource elements in which
reference signal is being transmitted. RSRP is the linear average
of all the red part power.
Since this measures only the reference power, we can say this is
the strength of the wanted signal. But it does not gives any
information about signal quality. RSRP gives us the signal strenth
of the desired signal, not the quality of the signal. For quality
of the signal informationanother parameter called 'RSSQ' is used in
some case.UE usually measures RSRP or RSRQ based on the direction
(RRC message) from the network and report the value. When it report
this value, it does use the real RSRP value. It sends a
non-negative value ranging from 0 to 97and each of these values are
mapped to a specific range of real RSRP value as shown in the
following table from 36.133.
![Real World Performance of LTE Downlink in a Static Dense ...indicators: RSRP, RSSI, RSRQ, and SINR; see [5]. RSRP serves as the main indicator for cell selection during the initial](https://img.pdfslide.net/doc/110x75/60f7fab9c849a8662229f6f6/real-world-performance-of-lte-downlink-in-a-static-dense-indicators-rsrp-rssi.jpg)
