Glossary
CQI (Channel Quality Indicator) in 3GPP: meaning and where it is specified
At a glance
- Term
- CQI
- Stands for
- Channel Quality Indicator
- Defined in
- 3GPP TR 21.905 V19.2.0, clause 4
- Used in
- TS 36.213, TS 38.101-4, TS 38.521-4
In plain words
The vocabulary entry expands CQI as Channel Quality Indicator, and TS 36.213 has a clause titled "Channel Quality Indicator (CQI) definition". TS 38.101-4 and TS 38.521-4 each have a clause on reporting Channel Quality Indicator, so both use CQI in reporting.
Source: 3GPP TS 36.213 V18.4.0, clause 7.2.3. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/36_series/36.213/36213-i40.zip
Sources
- 3GPP TR 21.905 V19.2.0, clause 4. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/21_series/21.905/21905-j20.zip
- 3GPP TS 36.213 V18.4.0, clause 7.2.3. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/36_series/36.213/36213-i40.zip
- 3GPP TS 38.101-4 V19.4.0, clause 6.2. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/38_series/38.101-4/38101-4-j40.zip
- 3GPP TS 38.521-4 V19.2.0, clause 6.2. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/38_series/38.521-4/38521-4-j20.zip
How this page was made
The facts box comes straight from the 3GPP TDoc list and specification archive as indexed by 3GPP Scout. An AI model (GPT-6 Luna) wrote the paragraph and named the source of each sentence. Code checked every quote word for word against the stored source text and every number against the cited source. A second AI model from another company (Claude Opus 5.5) reviewed the paragraph against the same sources. The 3GPP documents themselves govern.