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TR 23.737 (SA2) ☆ (Rel-16 draft)
Study on Architecture aspects
for using Satellite Access in 5G

3GPP‑Page   full‑ToC
use "3GPP‑Page" to get the Word version
for a better overview, the Table of Contents (ToC) is reproduced
V0.8.0 (Wzip)  2019/05  39 p.
Rapporteur:  Mr. Rognant, Pierre
The scope of this Technical Report is to study:
  • The identification of impact areas of satellite integration in the 5GS, when considering TR 22.822 use cases.
  • The identification of solutions to adjust the 5G system for the impact impacts areas for the reference use cases:
    • Roaming between terrestrial and satellite networks.
    • 5G Fixed Backhaul between Satellite Enabled NR-RAN and the 5G Core.
  • The resolution of RAN and CN inter-related issues.

full Table of Contents for  TR 23.737  Word version:   0.8.0

 

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1  Scope  Word-p. 6
2  References
3  Definitions, symbols and abbreviations
3.1  Definitions
3.2  Symbols
3.3  Abbreviations  Word-p. 7
4  Reference Satellite Integration Scenarios and Architectural Assumptions
4.1  Satellite access class scenarios
4.1.1  Satellite and terrestrial access networks within a PLMN
4.1.2  PLMNs with shared satellite access  Word-p. 8
4.1.3  Roaming and mobility between satellite only PLMN and terrestrial only PLMN  Up
4.2  Satellite backhaul scenario  Word-p. 9
4.3  Architectural assumptions
5  Key Issues  Word-p. 10
5.1  Key Issue #1: Mobility management with large satellite coverage areas
5.1.1  General description
5.2  Key Issue #2: Mobility Management with moving satellite coverage areas
5.2.1  General description
5.3  Key Issue #3: Delay in satellite  Word-p. 11
5.3.1  General description
5.4  Key Issue #4: QoS with satellite access  Up
5.4.1  General description
5.5  Key Issue #5: QoS with satellite backhaul
5.5.1  General description
5.6  Key Issue #6: RAN mobility with NGSO regenerative-based satellite access  Word-p. 12
5.6.1  General description
5.7  Key Issue #7: Multi connectivity with satellite access
5.7.1  General description
5.8  Key Issue #8: The role of satellite link in content distribution towards the edge  Word-p. 13
5.8.1  General description
5.9  Key Issue #9: Multi connectivity with hybrid satellite/terrestrial backhaul  Up
5.9.1  General Description
6  Solutions  Word-p. 14
6.1  Solution #1: Position-based and fixed TA Satellite Access
6.1.1  Description
6.1.2  Procedures  Word-p. 15
6.1.3  Impacts on existing nodes and functionality  Word-p. 16
6.1.4  Solution Evaluation
6.2  Solution #2: Addition of new RAT type satellite
6.2.1  Description
6.2.2  Procedures  Up
6.2.3  Impacts on existing nodes and functionality  Word-p. 17
6.2.4  Solution evaluation  Word-p. 18
6.3  Solution #3: Backhaul triggered QoS adaptation
6.3.1  Description
6.3.2  Procedures
6.3.3  Impacts on existing nodes and functionality  Word-p. 22
6.3.4  Solution Evaluation
6.4  Solution #4 for Key Issue #7: Support of UP path switch between SAT RAN and TER RAN
6.4.1  Description
6.4.2  Procedures  Word-p. 23
6.4.2.1  Activating a MA-PDU session for path switching
6.4.3  Impacts on existing nodes and functionality  Word-p. 24
6.4.4  Solution Evaluation
6.5  Solution #5: QoS control for satellite backhaul scenario
6.5.1  Description
6.5.2  Procedures
6.5.3  Impacts on existing nodes and functionality  Word-p. 26
6.5.4  Solution Evaluation
6.6  Solution #6 for Key Issue #8: Role of satellite backhaul in content distribution towards the edge
6.6.1  General description  Up
6.6.2  Procedures  Word-p. 27
6.6.2.1  Procedures to serve UE from the edge with a requested content
6.6.3  Impacts on existing nodes and functionality  Word-p. 28
6.6.4  Solution evaluation
6.7  Solution #7 for Key Issue #2: Idle mode mobility procedure for non-geostationary satellite access
6.7.1  Description
6.7.2  Procedures
6.7.3  Impacts on existing nodes and functionality  Word-p. 30
6.7.4  Solution Evaluation
7  Overall Evaluation  Up
8  Conclusions  Word-p. 31
A  Characteristics of satellite systems  Word-p. 32
A.1  General
A.2  Class of orbit
A.3  Geometrical coverage of satellite and propagation delay  Word-p. 33
A.4  Type of satellite communication payloads  Word-p. 34
A.5  Handovers  Word-p. 35
A.6  Air interfaces
A.7  General considerations on the use of satellite networks
B  Architecture Models for Satellite Integration in 5GS  Word-p. 36
B.1  Elementary satellite network architecture
B.2  Reference architecture with satellite enabled NR-RAN
C  Change history  Word-p. 39

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