What is CQI Reporting in LTE?
What is CQI Reporting in LTE?
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. All transmission modes need UE to provide CQI feedback. As mentioned in the figure, LTE CQI reports can be aperiodic or periodic.
How is CQI measured 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 a good CQI in LTE?
In HSDPA, the CQI value ranges from 0 ~ 30. 30 indicates the best channel quality and 0,1 indicates the poorest channel quality. Depending which value UE reports, network transmit data with different transport block size.
What is CQI PMI RI in LTE?
CQI is Channel Quality Indicator. PMI stands for Pre-coding Matrix Indicator, and RI is Rank Indicator. These three values are computed on the fly in LTE systems and used to try to optimize resource allocation among the various user end devices (UEs) that are requesting service.
What is CQI reporting?
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).
What is CQI and MCS?
MCS is the modulation and coding scheme that the eNB and UE agreed on. The CQI is a 4-bit integer and is based on the received signal-to-interference-plus-noise ratio (SINR) at the User Equipment (UE) .
What does CQI 0 mean?
The CQI indicates the highest modulation and the code rate at which the block error rate (BLER) of the channel being ana- lyzed does not exceed 10 %. The CQI accepts discrete val- ues between 0 and 15 (FIG 1). Index 0 indicates that the UE has not received any usable LTE signals and that the channel is inoperable.
What is a CQI report?
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.
What is the purpose of CQI?
Continuous Quality Improvement (CQI) is a quality management process that encourages all health care team members to continuously ask the questions, “How are we doing?” and “Can we do it better?” (Edwards, 2008). To address these questions, a practice needs structured clinical and administrative data.
How can I improve my CQI LTE?
The easiest way is to give a higher priority to L1800 and that will shift most of the UEs in L1800 coverage away from L800. This will ensure better CQI for users and thus a better throughput.
What is CQI in UMTS?
UMTS Quick Reference Go Back To Index Home : www.sharetechnote.com. CQI. 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.
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