Specification
3GPP TS 38.300: NR; NR and NG-RAN Overall Description; Stage 2
At a glance
- Title
- NR; NR and NG-RAN Overall Description; Stage 2
- Newest version
- V19.4.0 (Rel-19)
- Versions indexed
- 8
- Newest per release
- Rel-15: V15.23.0 (2026-07-01); Rel-16: V16.22.0 (2026-07-01); Rel-17: V17.17.0 (2026-07-01); Rel-18: V18.11.0 (2026-09-25); Rel-19: V19.4.0 (2026-09-25)
In plain words
TS 38.300 provides "an overview and overall description of the NG-RAN", focusing on the radio interface protocol architecture of NR connected to 5GC. Its overview says gNBs and ng-eNBs interconnect over Xn and connect to 5GC through NG interfaces. Companion specifications in the 38 series specify details of the radio interface protocols. V19.4.0 includes corrections on optional DRB setup for NCR-MT in RRC state transition and co-existence of CLTM with network triggered PSCell change.
Source: 3GPP TS 38.300 V19.4.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/38_series/38.300/38300-j40.zip
Newest version in each release
| Release | Newest version | In the archive | TSG meeting |
|---|---|---|---|
| Rel-19 | V19.4.0 | 2026-09-25 | TSG RAN #113 |
| Rel-18 | V18.11.0 | 2026-09-25 | TSG RAN #113 |
| Rel-17 | V17.17.0 | 2026-07-01 | TSG RAN #112 |
| Rel-16 | V16.22.0 | 2026-07-01 | TSG RAN #112 |
| Rel-15 | V15.23.0 | 2026-07-01 | TSG RAN #112 |
Source: 3GPP specification archive, versions indexed by 3GPP Scout. Each version links its official file.
Change requests in V19.4.0
V19.4.0 of TS 38.300 includes 7 CRs.
| CR | Category | Subject | Source | Working group meeting | TSG TDoc |
|---|---|---|---|---|---|
| CR 1176 | A | Correction on optional DRB setup for NCR-MT in RRC state transition | China Telecom, ZTE, Nokia, CATT | RAN2 #135 | RP-262142 |
| CR 1180 | F | Correction on co-existence of CLTM with network triggered PSCell change | NEC | RAN2 #135 | RP-262144 |
| CR 1189 rev 2 | F | Corrections on stage 2 applicability reporting procedure framework | ZTE Corporation, OPPO, Sanechips | RAN2 #135 | RP-262143 |
| CR 1192 | A | Correction on PDU set QoS parameters in target gNB | R3 (NEC, Huawei, China Telecom, Lenovo, Ericsson, Qualcomm, Samsung, ZTE, Nokia, CMCC) | RAN2 #135 | RP-262142 |
| CR 1193 | F | Correction on NR Femto awareness at CN | R3 (Huawei, CATT, Samsung, Ericsson, China Telecom, Lenovo, Qualcomm, Nokia, CMCC, ZTE) | RAN2 #135 | RP-262144 |
| CR 1195 | A | Correction on non-homogeneous support of PDU set based handling | R3 (Samsung, Huawei, NEC, ZTE, Ericsson, Nokia) | RAN2 #135 | RP-262142 |
| CR 1196 | F | L3 HO with LTM configuration kept | R3 (Samsung, Ericsson, Google, LG Electronics, Nokia, Lenovo, ZTE, Ofinno, Qualcomm, Huawei) | RAN2 #135 | RP-262144 |
Source: 3GPP CR database.
Meetings behind the latest versions
Working group meetings that agreed the CRs in V19.4.0, V18.11.0:
- RAN2 #135: 10 CRs
Plenary meetings:
- TSG RAN #113 approved V19.4.0 (Rel-19)
- TSG RAN #112 approved V19.3.0 (Rel-19)
- TSG RAN #110 approved V19.1.0 (Rel-19)
Source: 3GPP CR database and specification archive, as indexed by 3GPP Scout.
Clauses changed in V19.4.0
8 clauses changed or added in V19.4.0. Each clause number opens Scout on that clause.
| Clause | Title | Change | CRs |
|---|---|---|---|
| 9.2.3.2.1 | C-Plane Handling | changed | CR 1196 |
| 4.10.2.2 | AMF | changed | CR 1193 |
| 9.2.1.3 | State Transitions | changed | CR 1176 |
| 9.2.3.7.1 | General | changed | CR 1180 |
| 16.15.2 | Awareness | changed | CR 1192 |
| 22.2.3 | Applicability Reporting | changed | CR 1189 |
| G | Annex G (informative): Components of Mobility Latency | changed | |
| 16.15.5 | Non-Homogeneous support of PDU set based handling in NG-RAN | changed | CR 1195 |
Source: 3GPP Scout comparison of this version with the one before it.
Sources
- 3GPP TS 38.300 V19.4.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/38_series/38.300/38300-j40.zip
- 3GPP TS 38.300 V19.4.0, clause 4.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/38_series/38.300/38300-j40.zip
- 3GPP CR database.
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.