RSRP (Reference Signal Received Power) is a key measurement used in LTE (Long-Term Evolution) cellular networks to indicate the strength of the signal received by a device, such as a phone or modem, from a base station.
Understanding RSRP
RSRP measures the average power received from the reference signals across the entire bandwidth. It's a crucial indicator of the overall received signal strength, helping determine the best cell tower to connect to and the potential performance of the connection.
- What it measures: The power level of specific reference signals transmitted by the cell tower.
- Units: Measured in decibels relative to one milliwatt (dBm).
- Significance: A higher (less negative) RSRP value generally indicates a stronger signal, which is essential for stable and faster data connections.
RSRP Values and Signal Quality
The provided reference from Teltonika Networks Wiki outlines how different RSRP values correlate with signal quality:
| RSRP | Signal strength |
|---|---|
| >= -80 dBm | Excellent |
| -80 dBm to -90 dBm | Good |
| -90 dBm to -100 dBm | Fair to poor |
| \<= -100 dBm | No signal |
- An RSRP of -80 dBm or higher (e.g., -70 dBm, -65 dBm) is considered Excellent.
- Values between -80 dBm and -90 dBm indicate a Good signal.
- RSRP between -90 dBm and -100 dBm suggests a Fair to poor signal, which might lead to slower speeds or intermittent connectivity.
- An RSRP of -100 dBm or lower (e.g., -105 dBm, -110 dBm) means No signal or a signal too weak to establish a reliable connection.
Monitoring RSRP helps users and network administrators assess the quality of the cellular connection at a specific location and identify potential issues related to signal strength.
