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TR 38.811RAN
Study on 5G New Radio
to support non-terrestrial networks

use "3GPP‑Page" to get the Word version
for a better overview, the Table of Contents (ToC) is reproduced
V15.2.0 (Wzip)  2019/09  126 p.

WI Acronym:  FS_NR_nonterr_nw
Rapporteur:  Mr. Chuberre, NicolasTHALES

This technical report is related to a study item New Radio to support Non-Terrestrial Networks. The purpose of this TR is to collect the TSG RAN and RAN WG1 findings related to the study.
The objectives for the study are the following:
  • Definition of the Non-Terrestrial Networks deployment scenarios and related system parameters such as architecture, altitude, orbit etc.
  • Adaptation of the 3GPP channel models for non-terrestrial networks (propagation conditions, mobility...)
  • For the described deployment scenarios, identification of any key impact areas on the New Radio interface that may need further evaluations.

full Table of Contents for  TR 38.811  Word version:   15.2.0

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1  ScopeWord-p. 7
2  References
3  Definitions, symbols and abbreviationsWord-p. 10
4  Non-Terrestrial Networks Overview - background informationWord-p. 13
5  Non-Terrestrial Networks deployment scenariosWord-p. 24
6  Non-Terrestrial Networks channel modelsWord-p. 43
6.1  Status/expectation of existing information for satellite/HAPS channels
6.2  Differences between satellite/HAPS and cellular channel modelling
6.3  Coordinate systemWord-p. 45
6.4  Antenna modelling
6.5  Methodology to define channel models
6.6  Large scale modelWord-p. 48
6.7  Fast fading modelWord-p. 58
6.8  Additional modelling componentsWord-p. 85
6.9  Channel models for link level simulationsWord-p. 87
6.10  Channel model calibrationWord-p. 93
7  Potential key impact areas on NR to support NTNWord-p. 95
7.1  Specific constraints associated to NTN
7.2  NR features/protocols potentially affectedWord-p. 97
7.3  NR modifications to support the Non-Terrestrial Network deployment scenariosWord-p. 100
7.3.1  Methodology
7.3.2  Motion of the space/aerial vehiclesUp
7.3.3  Altitude of the space/aerial vehicles
7.3.4  Cell size (Beam foot print)Up
7.3.5  Propagation channel
7.3.6  Duplex mode
7.3.7  Satellite or aerial Payload performance
7.3.8  Network architecture
8  Recommendations on the way forwardWord-p. 121
A  Example of reference scenario for calibration of large scale parametersWord-p. 124
B  Non Terrestrial network characteristicsWord-p. 125
C  Change HistoryWord-p. 126

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