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| '''Reference Signals Received Power (RSRP)''' and '''Reference Signal Received Quality (RSRQ)''' are key measures of signal level and quality for modern LTE networks. 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. In the procedure of handover, the LTE specification provides the flexibility of using RSRP, RSRQ, or both. | | '''Reference Signals Received Power (RSRP)''' and '''Reference Signal Received Quality (RSRQ)''' are key measures of signal level and quality for modern LTE networks. 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. In the procedure of handover, the LTE specification provides the flexibility of using RSRP, RSRQ, or both. |
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− | '''RSRP''' – Reference Signal Received Power is an [[RSSI]] type of measurement. It is the power of the LTE Reference Signals spread over the full bandwidth and narrowband. A minimum of -20 dB SINR (of the S-Synch channel) is needed to detect RSRP/RSRQ. | + | '''RSRP''' – Reference Signal Received Power is an [[RSSI]] type of measurement. It is the power of the LTE Reference Signals spread over the full bandwidth and narrowband. A minimum of -20 dB [[SINR]] (of the S-Synch channel) is needed to detect RSRP/RSRQ. |
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| '''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. RSRQ is a C/I type of measurement and it indicates the quality of the received reference signal. The RSRQ measurement provides additional information when RSRP is not sufficient to make a reliable handover or cell reselection decision. | | '''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. RSRQ is a C/I type of measurement and it indicates the quality of the received reference signal. The RSRQ measurement provides additional information when RSRP is not sufficient to make a reliable handover or cell reselection decision. |
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| + | You can find more information on '''RSRP''' and '''RSRQ''' values in the [[Mobile Signal Strength Recommendations#4G_.28LTE.29|4G (LTE)]] section of the [[Mobile Signal Strength Recommendations]] page. |
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| + | {| class="wikitable" |
| + | |+ style="text-align: left;" | RSRP |
| + | ! style="width: 200px; background: black; color: white;" | RSRP |
| + | ! style="width: 200px; background: black; color: white;" | Signal strength |
| + | ! style="width: 950px; background: black; color: white;" | Description |
| + | |- |
| + | ! style="text-align: left; background: #6ACE61;" | >= -80 dBm |
| + | | style="text-align: left; background: #6ACE61;" | '''Excellent''' |
| + | | style="text-align: left; background: #6ACE61;" | Strong signal with maximum data speeds |
| + | |- |
| + | ! style="text-align: left; background: #FBFB43;" | -80 dBm to -90 dBm |
| + | | style="text-align: left; background: #FBFB43;" | '''Good''' |
| + | | style="text-align: left; background: #FBFB43;" | Strong signal with good data speeds |
| + | |- |
| + | ! style="text-align: left; background: #F7BA30;" | -90 dBm to -100 dBm |
| + | | style="text-align: left; background: #F7BA30;" | '''Fair to poor''' |
| + | | style="text-align: left; background: #F7BA30;" | 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 |
| + | |- |
| + | ! style="text-align: left; background: #EC031D;" | <= -100 dBm |
| + | | style="text-align: left; background: #EC031D;" | '''No signal''' |
| + | | style="text-align: left; background: #EC031D;" | Disnonnection |
| + | |- |
| + | |} |
| + | |
| + | {| class="wikitable" |
| + | |+ style="text-align: left;" | RSRQ |
| + | ! style="width: 200px; background: black; color: white;" | RSRQ |
| + | ! style="width: 200px; background: black; color: white;" | Signal quality |
| + | ! style="width: 950px; background: black; color: white;" | Description |
| + | |- |
| + | ! style="text-align: left; background: #6ACE61;" | >= -10 dB |
| + | | style="text-align: left; background: #6ACE61;" | '''Excellent''' |
| + | | style="text-align: left; background: #6ACE61;" | Strong signal with maximum data speeds |
| + | |- |
| + | ! style="text-align: left; background: #FBFB43;" | -10 dB to -15 dB |
| + | | style="text-align: left; background: #FBFB43;" | '''Good''' |
| + | | style="text-align: left; background: #FBFB43;" | Strong signal with good data speeds |
| + | |- |
| + | ! style="text-align: left; background: #F7BA30;" | -15 dB to -20 dB |
| + | | style="text-align: left; background: #F7BA30;" | '''Fair to poor''' |
| + | | style="text-align: left; background: #F7BA30;" | Reliable data speeds may be attained, but marginal data with drop-outs is possible. When this value gets close to -20, performance will drop drastically |
| + | |- |
| + | ! style="text-align: left; background: #EC031D;" | <= -20 dB |
| + | | style="text-align: left; background: #EC031D;" | '''No signal''' |
| + | | style="text-align: left; background: #EC031D;" | Disconnection |
| + | |- |
| + | |} |