TR 23.737
SA2
★
Study on Architecture aspects
for using Satellite Access in 5G
use "3GPP‑Page" to get the Word version
for a better overview, the Table of Contents (ToC) is reproduced
for a better overview, the Table of Contents (ToC) is reproduced
V17.0.0 (Wzip)
2019/12 82 p.
WI Acronym: FS_5GSAT_ARCH
Rapporteur: Mr. Rognant, Pierre THALES
Rapporteur: Mr. Rognant, Pierre THALES
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: 17.0.0
1 Scope Word-p. 7
2 References
3 Definitions, symbols and abbreviations
4 Reference Satellite Integration Scenarios and Architectural Assumptions
4.1 Satellite access class scenarios
4.3 Architectural assumptions
5 Key Issues Word-p. 11
4.1.1 Satellite and terrestrial access networks within a PLMN
4.1.2 PLMNs with shared satellite access Word-p. 9
4.1.3 Roaming and mobility between satellite only PLMN and terrestrial only PLMN Word-p. 10
4.2 Satellite backhaul scenario
4.3 Architectural assumptions
5.1 Key Issue #1: Mobility management with large satellite coverage areas
5.2 Key Issue #2: Mobility Management with moving satellite coverage areas
5.3 Key Issue #3: Delay in satellite Word-p. 12
5.4 Key Issue #4: QoS with satellite access
5.5 Key Issue #5: QoS with satellite backhaul
5.6 Key Issue #6: RAN mobility with NGSO regenerative-based satellite access Word-p. 13
5.7 Key Issue #7: Multi connectivity with satellite access
5.8 Key Issue #8: The role of satellite link in content distribution towards the edge Word-p. 14
5.9 Key Issue #9: Multi connectivity with hybrid satellite/terrestrial backhaul Word-p. 15
5.10 Key Issue #10: Regulatory services with super-national satellite ground station Word-p. 16
6 Solutions Word-p. 17
6.1 Solution #1: Position-based and fixed TA Satellite Access
7 Overall evaluation
6.1.1 Description
6.1.2 Procedures Word-p. 20
6.1.3 Impacts on existing nodes and functionality
6.1.4 Solution evaluation
6.2 Solution #2: Addition of new values to RAT type IE
6.2.1 Description
6.2.2 Procedures Word-p. 21
6.2.3 Impacts on existing nodes and functionality Word-p. 22
6.2.4 Solution evaluation Word-p. 23
6.3 Solution #3: Backhaul triggered QoS adaptation
6.2.2 Procedures Word-p. 21
6.2.3 Impacts on existing nodes and functionality Word-p. 22
6.2.4 Solution evaluation Word-p. 23
6.3.1 Description
6.3.2 Procedures Word-p. 24
6.3.3 Impacts on existing nodes and functionality Word-p. 27
6.3.4 Solution evaluation
6.4 Solution #4: Support of UP path switch between SAT RAN and TER RAN
6.4.1 Description
6.4.2 Procedures Word-p. 28
6.4.3 Impacts on existing nodes and functionality Word-p. 29
6.4.4 Solution evaluation
6.5 Solution #5: QoS control for satellite backhaul scenario
6.4.2 Procedures Word-p. 28
6.4.3 Impacts on existing nodes and functionality Word-p. 29
6.4.4 Solution evaluation
6.5.1 Description
6.5.2 Procedures
6.5.3 Impacts on existing nodes and functionality Word-p. 31
6.5.4 Solution evaluation
6.6 Solution #6: Role of satellite backhaul in content distribution towards the edge
6.6.1 General description
6.6.2 Procedures Word-p. 32
6.6.3 Impacts on existing nodes and functionality Word-p. 33
6.6.4 Solution evaluation
6.7 Solution #7: Idle mode mobility procedure for non-geostationary satellite access
6.7.1 Description
6.7.2 Procedures Word-p. 34
6.7.3 Impacts on existing nodes and functionality Word-p. 36
6.7.4 Solution evaluation
6.8 Solution #8: 5GS enhancement to support gNBs on NGSO satellites Word-p. 37
6.8.1 Description
6.8.2 Procedures Word-p. 38
6.8.3 Impacts on existing nodes and functionality Word-p. 39
6.8.4 Solution evaluation
6.9 Solution #9: Distributed gNB for NGSO satellites
6.9.1 Description
6.9.2 Procedures Word-p. 41
6.9.3 Impacts on existing nodes and functionality
6.9.4 Solution evaluation
6.10 Solution #10: Addressing delay in satellite
6.10.1 Description
6.11 Solution #11: Backhaul QoS handling based on AMF and UPF information
6.10.1.1 Sources of delay Word-p. 42
6.10.1.2 Delay adaptation in the Core Network
6.10.1.3 Impact on timers
6.10.1.4 Timers management Word-p. 43
6.10.1.5 Overall proposal
6.10.2 Procedures Word-p. 44
6.10.3 Impacts on existing nodes and functionality
6.10.4 Solution evaluation
6.11.1 Description
6.11.2 Procedures Word-p. 47
6.12 Solution #12: Satellite cells for 5G satellite access Word-p. 52
6.11.2.1 Procedures of detecting backhaul related information
6.11.2.2 Procedures of detecting backhaul related information via N2 interface
6.11.2.3 Procedures of utilizing backhaul related information during the PDU session establishment procedure
6.11.2.4 Procedures of utilizing backhaul information during the PDU session modification procedure Word-p. 49
6.11.3 Impacts on existing nodes and functionality Word-p. 51
6.11.4 Solution evaluation
6.12.1 Description
6.12.2 Procedures Word-p. 59
6.12.4 Solution evaluation Word-p. 62
6.13 Solution #13: Country specific PLMN selection Word-p. 64
6.12.2.1 Mobility Procedures
6.12.2.2 Emergency Calls Word-p. 60
6.12.2.3 Lawful interception by the UE's visited country
6.12.2.4 Public Warning System Word-p. 61
6.12.2.5 Charging / Customer Notifications
6.12.3 Impacts on existing nodes and functionality
6.12.4 Solution evaluation Word-p. 62
6.13.1 Description
6.13.2 Procedures Word-p. 65
6.13.4 Solution evaluation
6.14 Solution #14: Mobility and QoS with Satellite Access Word-p. 67
6.13.2.1 UE switch on and recovery from lack of coverage situation
6.13.2.2 UE performing PLMN selection
6.13.2.3 UE registered in VPLMN
6.13.2.4 AMF processing of Registration Request from UE accessing over satellite Word-p. 66
6.13.2.5 UE mobility in connected mode
6.13.3 Impacts on existing nodes and functionality
6.13.4 Solution evaluation
7.1 Evaluation of solutions for Key Issue #1 - Mobility management with large satellite coverage areas
7.2 Evaluation of solutions for Key Issue #2 - Mobility Management with moving satellite coverage areas
7.3 Evaluation of solutions for Key Issue #3 - Delay in satellite Word-p. 69
7.4 Evaluation of solutions for Key Issue #4 - QoS with satellite access
7.5 Evaluation of solutions for Key Issue #5 - QoS with satellite backhaul Word-p. 70
7.6 Evaluation of solutions for Key Issue #6 - RAN mobility with NGSO regenerative-based satellite access Word-p. 71
7.7 Evaluation of solutions for Key Issue #7 - Multi connectivity with satellite access
7.8 Evaluation of solutions for Key Issue #8 - The role of satellite link in content distribution towards the edge Word-p. 72
7.9 Evaluation of solutions for Key Issue #9 - Multi connectivity with hybrid satellite/terrestrial backhaul
7.10 Evaluation of solutions for Key Issue #10 - Regulatory services with super-national satellite ground station
8 Conclusions Word-p. 73
8.1 Conclusion on solutions for Key Issue #1
8.2 Conclusion on solutions for Key Issue #2
8.3 Conclusion on solutions for Key Issue #3
8.4 Conclusion on solutions for Key Issue #4
8.5 Conclusion on solutions for Key Issue #5
8.6 Conclusion on solutions for Key Issue #6
8.7 Conclusion on solutions for Key Issue #7 Word-p. 74
8.8 Conclusion on solutions for Key Issue #8
8.9 Conclusion on solutions for Key Issue #9
8.10 Conclusion on solutions for Key Issue #10
A Characteristics of satellite systems Word-p. 75
8.3 Conclusion on solutions for Key Issue #3
8.4 Conclusion on solutions for Key Issue #4
8.5 Conclusion on solutions for Key Issue #5
8.6 Conclusion on solutions for Key Issue #6
8.7 Conclusion on solutions for Key Issue #7 Word-p. 74
8.8 Conclusion on solutions for Key Issue #8
8.9 Conclusion on solutions for Key Issue #9
8.10 Conclusion on solutions for Key Issue #10
A.1 General
A.2 Class of orbit
A.3 Geometrical coverage of satellite and propagation delay Word-p. 76
A.4 Type of satellite communication payloads Word-p. 77
A.5 Handovers Word-p. 78
A.6 Air interfaces
A.7 General considerations on the use of satellite networks
B Architecture Models for Satellite Integration in 5GS Word-p. 79
A.2 Class of orbit
A.3 Geometrical coverage of satellite and propagation delay Word-p. 76
A.4 Type of satellite communication payloads Word-p. 77
A.5 Handovers Word-p. 78
A.6 Air interfaces
A.7 General considerations on the use of satellite networks
B.1 Elementary satellite network architecture
B.2 Reference architecture with satellite enabled NR-RAN
C Change history Word-p. 82
