![]() ![]() ![]() Reliable data speeds may be attained, but marginal data with drop-outs is possible. When this value gets close to -100, performance will drop drastically Reliable data speeds may be attained, but marginal data with drop-outs is possible. RSRP, RSRQ and SINR are three important parameters used to measure the quality of a cellular network signal in LTE (Long-Term Evolution) technology. You can find more information on RSRP and RSRQ values in the 4G (LTE) section of the Mobile Signal Strength Recommendations page. The RSRQ measurement provides additional information when RSRP is not sufficient to make a reliable handover or cell reselection decision. RSRQ is a C/I type of measurement and it indicates the quality of the received reference signal. RSRQ – Reference Signal Received Quality: Quality considering also RSSI and the number of used Resource Blocks (N) RSRQ = (N * RSRP) / RSSI measured over the same bandwidth. A minimum of -20 dB SINR (of the S-Synch channel) is needed to detect RSRP/RSRQ. It is the power of the LTE Reference Signals spread over the full bandwidth and narrowband. Both LTE RSRP and LTE RSRQ parameters are used for cell. RSRP – Reference Signal Received Power is an RSSI type of measurement. RSRQ is the short form of Reference Signal Received Quality and it is equivalent to UMTS CPICH Ec/Io. RSRQ Indicates quality of the received signal, and its range is typically -19.5dB (bad) to -3dB (good). In the procedure of handover, the LTE specification provides the flexibility of using RSRP, RSRQ, or both. In cellular networks, when a mobile device moves from cell to cell and performs cell selection/reselection and handover, it has to measure the signal strength/quality of the neighbor cells. LTE TDD Overview LTE IoT LTE-M1 NB-IoT 4G/LTE - PHY Measurement RSRQ (Reference Signal Recieved Quality) RSRQ is defined as (N x RSRP)/RSSI in 3GPP 36.214, where N is the number of RBs over the measurement bandwidth. Reference Signals Received Power (RSRP) and Reference Signal Received Quality (RSRQ) are key measures of signal level and quality for modern LTE networks. ![]()
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