Content for TR 28.841 Word version: 18.0.1
1 Scope p. 7
The present document studies on management aspects of IoT NTN enhancements. It investigates specific IoT NTN related parameters which should be considered by O&M, investigates NRM enhancement, performance measurement and related new KPIs of IoT NTN. It studies the key issues associated with service and network management of IoT NTN enhancements (whether as NG-RAN or E-UTRAN) and potential solutions, and provides recommendations for the further normative work.
2 References p. 7
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 36.300: "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2".
[3]
TS 38.300: "NR; NR and NG-RAN Overall description; Stage-2 ".
[4]
TR 28.808: "Study on management and orchestration aspects of integrated satellite components in a 5G network".
[5]
TS 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access".
[6]
TS 36.331: "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification".
[7]
TS 36.304: "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) procedures in idle mode".
[8]
TS 23.501: "System Architecture for the 5G System; Stage 2".
[9]
TR 38.821: "Solutions for NR to support non-terrestrial networks (NTN)".
[10]
TS 28.313: "Self-Organizing Networks (SON) for 5G networks".
[11]
TS 28.552: "Management and orchestration; 5G performance measurements".
3 Definitions of terms, symbols and abbreviations p. 7
3.1 Terms p. 7
For the purposes of the present document, the terms given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
Geostationary (GEO) satellites:
located precisely in the plane of the Equator at an altitude of 35,786 km, these satellites rotate at the same rate as the Earth's rotation.
Highly-Eccentric Orbiting (HEO) satellites:
satellites with a range of operational altitudes between 7,000 km and more than 45,000 km.
Low-Earth Orbiting (LEO) satellites:
satellites typically deployed in constellations with altitude ranging from 500 km to 2,000 km.
Medium-Earth Orbiting (MEO) satellites:
with altitude ranging from 8,000 to 20,000 km.
Non-Geostationary Orbiting (NGSO) satellites:
These satellites do not stand still with respect to Earth.
Satellite coverage availability information:
This refers to location and time information related to expected coverage availability of satellite/satellite constellation that provides discontinuous coverage.
3.2 Symbols p. 8
Void.
3.3 Abbreviations p. 8
For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
AN
Access Network
BL
Bandwidth reduced Low complexity
5GC
5G Core Network
CN
Core Network
eMTC
enhanced Machine-Type Communication
GEO
Geostationary satellite Orbit
gNB
generic Node B
gNB-CU
gNB-Central Unit
gNB-DU
gNB-Distributed Unit
HARQ
Hybrid Automatic Repeat Request
HEO
Highly-Eccentric Orbiting satellites
LEO
Low-Earth Orbiting satellites
IoT
Internet of Things
MEO
Medium-Earth Orbiting satellites
NCR
Neighbour Cell Relationship
NGSO
Non-geostationary Satellite Orbit
NOP
Network Operator
NS
Network Slice
NSI
Network Slice Instance
NSSI
Network Slice Subnet Instance
SON
Self-organized Network
QoS
Quality of Service
RAN
Radio Access Network
RAT
Radio Access Technology
RU
Radio Unit
