Synchronization Signal Reference Signal Received Quality

SS-RSRQ is used in 5G NR networks to determine the quality of the radio channel. RSRQ, unlike RSRP (wanted signal strength), also includes interference level due to the inclusion of RSSI in calculation. This parameter is also used for cell selection and handover, if the RSRP is not sufficient. This happens mainly in border parts of cell. It is similar to parameter RSRQ from LTE networks. The main difference is that in 5G networks are used Synchronization Signals (SS) and Channel State Information (CSI) instead of Reference signals (RS). Another difference is in mapping table which contains more values.

SS-RSRQ calculation


RSRQ mapping table

Code Range of RSRQ in dB Code Range of RSRQ in dB Code Range of RSRQ in dB
0 <-43.0 43 -22.0 to -21.5 86 -0.50 to 0.00
1 -43.0 to -42.5 44 -21.5 to -21.0 87 0.00 to 0.50
2 -42.5 to -42.0 45 -21.0 to -20.5 88 0.50 to 1.00
3 -42.0 to -41.5 46 -20.5 to -20.0 89 1.00 to 1.50
4 -41.5 to -41.0 47 -20.0 to -19.5 90 1.50 to 2.00
5 -41.0 to -40.5 48 -19.5 to -19.0 91 2.00 to 2.50
6 -40.5 to -40.0 49 -19.0 to -18.5 92 2.50 to 3.00
7 -40.0 to -39.5 50 -18.5 to -18.0 93 3.00 to 3.50
8 -39.5 to -39.0 51 -18.0 to -17.5 94 3.50 to 4.00
9 -39.0 to -38.5 52 -17.5 to -17.0 95 4.00 to 4.50
10 -38.5 to -38.0 53 -17.0 to -16.5 96 4.50 to 5.00
11 -38.0 to -37.5 54 -16.5 to -16.0 97 5.00 to 5.50
12 -37.5 to -37.0 55 -16.0 to -15.5 98 5.50 to 6.00
13 -37.0 to -36.5 56 -15.5 to -15.0 99 6.00 to 6.50
14 -36.5 to -36.0 57 -15.0 to -14.5 100 6.50 to 7.00
15 -36.0 to -35.5 58 -14.5 to -14.0 101 7.00 to 7.50
16 -35.5 to -35.0 59 -14.0 to -13.5 102 7.50 to 8.00
17 -35.0 to -34.5 60 -13.5 to -13.0 103 8.00 to 8.50
18 -34.5 to -34.0 61 -13.0 to -12.5 104 8.50 to 9.00
19 -34.0 to -33.5 62 -12.5 to -12.0 105 9.00 to 9.50
20 -33.5 to -33.0 63 -12.0 to -11.5 106 9.50 to 10.00
21 -33.0 to -32.5 64 -11.5 to -11.0 107 10.00 to 10.50
22 -32.5 to -32.0 65 -11.0 to -10.5 108 10.50 to 11.00
23 -32.0 to -31.5 66 -10.5 to -10.0 109 11.00 to 11.50
24 -31.5 to -31.0 67 -10.0 to -9.50 110 11.50 to 12.00
25 -31.0 to -30.5 68 -9.50 to -9.00 111 12.00 to 12.50
26 -30.5 to -30.0 69 -9.00 to -8.50 112 12.50 to 13.00
27 -30.0 to -29.5 70 -8.50 to -8.00 113 13.00 to 13.50
28 -29.5 to -29.0 71 -8.00 to -7.50 114 13.50 to 14.00
29 -29.0 to -28.5 72 -7.50 to -7.00 115 14.00 to 14.50
30 -28.5 to -28.0 73 -7.00 to -6.50 116 14.50 to 15.00
31 -28.0 to -27.5 74 -6.50 to -6.00 117 15.00 to 15.50
32 -27.5 to -27.0 75 -6.00 to -5.50 118 15.50 to 16.00
33 -27.0 to -26.5 76 -5.50 to -5.00 119 16.00 to 16.50
34 -26.5 to -26.0 77 -5.00 to -4.50 120 16.50 to 17.00
35 -26.0 to -25.5 78 -4.50 to -4.00 121 17.00 to 17.50
36 -25.5 to -25.0 79 -4.00 to -3.50 122 17.50 to 18.00
37 -25.0 to -24.5 80 -3.50 to -3.00 123 18.00 to 18.50
38 -24.5 to -24.0 81 -3.00 to -2.50 124 18.50 to 19.00
39 -24.0 to -23.5 82 -2.50 to -2.00 125 19.00 to 19.50
40 -23.5 to -23.0 83 -2.00 to -1.50 126 19.50 to 20.00
41 -23.0 to -22.5 84 -1.50 to -1.00
42 -22.5 to -22.0 85 -1.00 to -0.50

Source: ETSI

Please enter the values in the required format.

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Number of resource blocks must be integer between 24 and 275.