RSRQ Values

[AdrianFrick]

Hello,

in documentation of nRF9160 RSRQ is defined for 0..34 and 255.

What about values 35..254? Is it possible to get these values from the chip?

I have to know, if these values are error or valid data (RSRQ> -3dB).

thank you for help

best regards

Adrian Frick

[Øyvind]

Hello Mr. Frick, 

Currently it is only possible to read the values given by 0 - 34, and 255. Is there a reason for why you need the values between? For question regarding the road map of the modem FW, please contact your local RSM.

The RSRQ values are given by 3GPP TS 36.133 - chapter 9.1.7 RSRQ Measurement Report Mapping

The reporting range of RSRQ is defined from -34 dB to 2.5 dB with 0.5 dB resolution.

The mapping of measured quantity is defined in table 9.1.7-1. The range in the signalling may be larger than the guaranteed accuracy range.

Table 9.1.7-1: RSRQ measurement report mapping

Reported value	Measured quantity value	Unit
RSRQ_-30	RSRQ < -34	dB
RSRQ_-29	-34 £ RSRQ < -33.5	dB
…	…	…
RSRQ_-02	-20.5 £ RSRQ < -20	dB
RSRQ_-01	-20 £ RSRQ < -19.5	dB
RSRQ_00	RSRQ < -19.5	dB
RSRQ_01	-19.5 £ RSRQ < -19	dB
RSRQ_02	-19 £ RSRQ < -18.5	dB
…	…	…
RSRQ_32	-4 £ RSRQ < -3.5	dB
RSRQ_33	-3.5 £ RSRQ < -3	dB
RSRQ_34	-3 £ RSRQ	dB
RSRQ_35	-3 £ RSRQ < -2.5	dB
RSRQ_36	-2.5 £ RSRQ < -2	dB
…	…	…
RSRQ_45	2 £ RSRQ < 2.5	dB
RSRQ_46	2.5 £ RSRQ	dB

Note: The ranges from RSRQ_-30 to RSRQ_-01 and from RSRQ_35 to RSRQ_46 apply for the UE who can support extended RSRQ range in [31].

This is the extended range. Earlier spec versions had the normal range from RSRQ_0 ... RSRQ_34

Kind regards,
Øyvind