Specification
3GPP TR 37.864-41-21: E-UTRA (Evolved Universal Terrestrial Radio Access) - NR Dual Connectivity (EN-DC) of LTE x Down Link (DL) / 1 Up Link (UL) (x=1,2,3,4) and inter-band NR 2 Down Link (DL) / 1 Up Link (UL)
At a glance
- Title
- E-UTRA (Evolved Universal Terrestrial Radio Access) - NR Dual Connectivity (EN-DC) of LTE x Down Link (DL) / 1 Up Link (UL) (x=1,2,3,4) and inter-band NR 2 Down Link (DL) / 1 Up Link (UL)
- Newest version
- V15.0.0 (Rel-15)
- Versions indexed
- 1
- Newest per release
- Rel-15: V15.0.0 (2018-07-16)
In plain words
TR 37.864-41-21 is a technical report on Dual connectivity (DC) band combinations of LTE xDL/1UL (x=1,2,3,4) + inter-band NR 2DL/1UL under Rel-15 time frame. Its purpose is to gather relevant background information and studies to address those combinations in Rel-15, as shown in Table 1-1. The report contains "a general part and band specific combination part". A single company is responsible for introducing all approved TPs in the current TR, while each band combination contact person ensures related TPs are implemented.
Source: 3GPP TR 37.864-41-21 V15.0.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/37_series/37.864-41-21/37864-41-21-f00.zip
Newest version in each release
| Release | Newest version | In the archive | TSG meeting |
|---|---|---|---|
| Rel-15 | V15.0.0 | 2018-07-16 | not recorded |
Source: 3GPP specification archive, versions indexed by 3GPP Scout. Each version links its official file.
Sources
- 3GPP TR 37.864-41-21 V15.0.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/37_series/37.864-41-21/37864-41-21-f00.zip
- 3GPP TR 37.864-41-21 V15.0.0, clause 4.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/37_series/37.864-41-21/37864-41-21-f00.zip
How this page was made
The facts box and the tables come straight from the 3GPP specification archive and CR database 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.