What is LTE CQI?
What is LTE CQI?
In the LTE system, the CQI is used by the mobile to indicate the channel quality to the eNB. The CQI reported value is between 0 and 15. This indicates the level of modulation and coding the UE could operate.
How is CQI calculated in LTE?
CQI (Channel Quality Indication) – Instead of expressing the CQI as a received signal quality, the CQI expressed as a data rate that terminal (UE) can support under the actual radio conditions. SINR is used for calculating CQI. In LTE, CQI has only 15 codes. MCS parameter is assigned based on the CQI value.
What is CQI in networking?
CQI stands for Channel Quality Indicator. As the name implies, it is an indicator carrying the information on how good/bad the communication channel quality is. This CQI is for HSDPA. (LTE also has CQI for its own purpose). CQI is the information that UE sends to the network and practically it implies the following two.
What is good Sinr in LTE?
Signal Type Definitions SINR/SNR – The signal-to-noise ratio of the given signal. RSRQ – Indicates quality of the received signal, and its range is typically -19.5dB(bad) to -3dB (good).
What causes BLER in LTE?
The BLER should be smaller or equal than 10%. If the value is larger, then, there is an indication of bad RF environment. b) Typical causes of bad BLER are downlink interference, bad coverage (holes in the network, etc.)
Why do we need Rach in LTE?
Another purpose of RACH process is to obtain the resource for Msg3 (Message 3). RRC Connection Request is one example of Msg3 and there are several different types of Msg3 depending on situation.
What is the purpose of CQI in LTE?
Basically, this indicator carries the information on how good or bad the communication channel quality is. Long Term Evolution(LTE) also has CQI for its own purpose. CQI contains the information that is sent from the UE to eNode-B. This is what indicates an appropriate downlink transmission date rate.
What does CQI stand for in Long Term Evolution?
CQI stands for Channel Quality Indicator. Basically, this indicator carries the information on how good or bad the communication channel quality is. Long Term Evolution (LTE) also has CQI for its own purpose. CQI contains the information that is sent from the UE to eNode-B.
What does CQI stand for in channel quality?
CQI – Channel Quality Indicator. CQI stands for Channel Quality Indicator. As the name implies, it is an indicator carrying the information on how good/bad the communication channel quality is.
What’s the difference between LTE CQI, PMI and Ri?
This page on LTE CQI vs PMI vs RI describes difference between LTE CQI,PMI and RI. The LTE CQI stands for Channel Quality Information. It basically includes CQI, PMI,RI components. The requirement for each of these components depend on transmission mode.