LTE RSRP RSRQ RSSI Calculator
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LTE RSRP / RSRQ / RSSI Calculator
Calculate LTE RSRQ from RSSI, RSRP and number of resource blocks, then understand signal strength, signal quality, and practical drive-test interpretation in one simple tool.
RSRPReference signal received power, mainly used for LTE signal strength.
RSSITotal received wideband power including signal, interference and noise.
RSRQSignal quality indicator derived from RSRP, RSSI and resource blocks.
Drive TestUseful for field optimization, coverage checks and RF troubleshooting.
LTE Signal Quality Calculator
Enter measured RSSI, RSRP and LTE bandwidth/resource blocks. The calculator estimates RSRQ and provides practical interpretation for RF engineers and students.
Calculated RSRQ
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RSRP Category
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RSSI Observation
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Field Interpretation
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Quick logic: RSRP tells coverage strength, RSSI includes total received power, and RSRQ indicates signal quality considering interference/noise and bandwidth.
Live Signal Meter
Visual indication based on entered LTE RF values. These categories are practical field-engineering ranges and may vary by operator/tool configuration.
RSRQ Formula
RSRQ = N × RSRP / RSSI
RSRQ(dB) = RSRP(dBm) − RSSI(dBm) + 10log10(N)
N = Number of LTE Resource BlocksLTE RSRP, RSRQ and RSSI Practical Ranges
| Metric | Excellent | Good | Fair | Poor / Bad | Usage |
|---|---|---|---|---|---|
| RSRP | ≥ -80 dBm | -80 to -90 dBm | -90 to -100 dBm | < -110 dBm | Coverage and signal strength |
| RSRQ | ≥ -10 dB | -10 to -15 dB | -15 to -20 dB | < -20 dB | Signal quality and interference indication |
| RSSI | High received power | Moderate received power | Low received power | Very low / noisy observation | Total received power including interference and noise |
Important: RSRQ can be poor even when RSRP is good, especially in high-interference or loaded cells. That is why RSRP alone is not enough for LTE field analysis.
What is RSRP?RSRP is the average received power of LTE reference signals. It is commonly used to judge LTE coverage strength.
What is RSSI?RSSI is total received wideband power. It includes serving cell power, interference, adjacent cells and noise.
What is RSRQ?RSRQ combines RSRP and RSSI with the number of RBs. It helps estimate LTE signal quality.
Why RB count matters?RSRQ depends on N, the number of resource blocks. A 20 MHz LTE carrier uses 100 RBs, while 10 MHz uses 50 RBs.
Drive-test useEngineers use RSRP and RSRQ together to identify coverage holes, interference zones and poor-quality serving cells.
Optimization useGood RSRP but poor RSRQ may indicate interference, load, overshooting cells or poor neighbor planning.
LTE Interview Questions from this Topic
| Question | Short Answer |
|---|---|
| Why is RSRP used in LTE? | RSRP is used to measure LTE reference-signal strength and is important for cell selection, reselection and handover decisions. |
| What is the difference between RSRP and RSSI? | RSRP is reference-signal power, while RSSI is total received wideband power including interference and noise. |
| Why can RSRQ be bad when RSRP is good? | Because RSSI may be high due to interference or load, which reduces the RSRQ value. |
| What does poor RSRQ indicate? | Poor RSRQ normally indicates poor signal quality, interference, congestion or overlapping cells. |
| Why is the number of RBs used in RSRQ calculation? | RSRQ normalizes signal quality over the measurement bandwidth, represented by the number of resource blocks. |
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