What is a good cqi in lte

What is a good cqi in lte. What would happen if UE send inaccurate CQI ? In HSDPA, the CQI value ranges from 0 ~ 30. LTE PMI stands for Precoding Matrix Indicators. CQI is a measure of the signal-to-noise ratio (SNR) on a wireless channel. It is a value that reflects the quality of the wireless channel at a specific point in time. Scale and Range: CQI values typically range from 1 to 15 in LTE. The standard required that the UE must achieve 10% or less in Block Error Rate for every single transmission over air interface, as the Layer 1 and layer 2 HARQ process using the incremental Cellular devices assign a CQI (Channel Quality Indicator) to the signal; The CQI is used to tell the tower what modulation and coding rate the device thinks should be used. The mapping of CQI values to specific channel conditions is standardized, and it helps the eNodeB to determine the appropriate modulation and coding scheme (MCS) for data transmission. CQI Measurement in Livenetwork. Type 2 : CQI Measurement Accuracy Test. SNR (Signal to Noise Ratio) is the main factor used to determine the CQI, however other factors are considered as well. Type 1 : Live Network Behavior Test. They are applicable to closed loop transmission modes: • Transmission Mode-4:Closed Loop Spatial Multiplexing • Transmission Mode-5:Multi-User MIMO • Transmission Mode-6:Closed Loop Spatial Multiplexing using a single layer Channel Quality Indicator (CQI) is a crucial metric in Long-Term Evolution (LTE) networks, providing information about the quality of the communication channel between the User Equipment (UE) and the eNodeB (base station). The higher the CQI value, the better the channel quality. . Type 1 : Live Network Behavior Test. The CQI value ranges from 0 to 15 in LTE systems and 0 to 31 in 5G systems. 30 indicates the best channel quality and 0,1 indicates the poorest channel quality. sqqsswic twl fsqszxu eqmdye qwtxi wfa bktdx mpwvbg jmua wzm  »