RSRQ (Reference Signal Received Quality) is a measurement used in LTE (Long-Term Evolution) cellular networks to evaluate the quality of the received signal. It is the ratio of the received reference signal power to the received interference power plus noise power, expressed in dB.
It is a measure of the signal-to-interference-plus-noise ratio (SINR). A higher RSRQ value indicates a stronger signal and lower interference and noise, resulting in a better quality signal. Conversely, a lower RSRQ value indicates a weaker signal and higher interference and noise, resulting in a poor quality signal.
RSRQ values typically range from negative to positive numbers. Negative values indicate a low signal quality with high interference and noise, while positive values indicate a better signal quality with low interference and noise.
A value of 0 dB means that the received reference signal power is equal to the received interference power plus noise power, resulting in a poor quality signal. A value above -10 dB is considered good and can provide reliable communication, while a value below -15 dB is considered poor and can result in dropped calls, slow data transfer rates, and other issues.
The RSRQ value can be affected by several factors, such as distance from the base station, signal frequency, environmental factors, and other sources of interference. The base station can estimate the RSRQ value of each mobile device by measuring the received reference signal power and interference plus noise power. The base station can then use this information to adjust the transmit power and other parameters to optimize the RSRQ value and improve the overall network performance.
In summary, the RSRQ is an important metric for evaluating the quality of the received signal in LTE cellular networks. It can impact the overall network performance and user experience. Therefore, maintaining a high RSRQ value is essential for ensuring reliable and efficient communication in LTE cellular networks.