SINR is the ratio of the received signal level and the sum of interference and noise. The 3GPP specification does not include the SINR parameter. UE (user equipment) does not send the results back to the network. SINR is measured and used only in UE. It is used to better express the ralitionship between radio conditions and throughput. For example it can be used for calculating CQI value. Specific implementations may vary and it is up to the manufacturer to decide, how to implement this measurement. This is making difficult to compare results of different devices. SINR is also measured in LTE and 5G NR.
CQI (Channel Quality Indication) is also used in 3G and LTE. Instead of expressing the CQI as a received signal quality, the CQI expressed as a data rate that terminal can support under the actual radio conditions. Instead of SINR (which is used for calculating CQI) is CQI reported to NodeB via HS-DPCCH (Uplink High-speed Dedicated Physical Control Channel). According to CQI is determined TRFC (Transport Block Size, number of HS-PDSCH channels and modulation). CQI can be increased if the BLER value is under 10%.
|SINR [dB]||CQI code||Transport Block Size [B]||Number of HS-PDSCH||Modulation Type|
SINR mapping is created by simulating BLER.
Source: FURHT, Borivoje a Syed AHSON. HSDPA/HSUPA handbook
Source: ETSI CQI tables
Please enter the values in the required format.
Please fill in all the required fields.
The entered values must be grater than 0.