Tech-invite3GPPspecsSIPRFCs
Overview21222324252627282931323334353637384‑5x

Content for  TR 22.822  Word version:  16.0.0

Top   Top   Up   Prev   Next
1…   5…   5.6…   6…   A…

 

6  5QI for a 5G system with satellite access

6.1  Background

Satellite access networks are based on infrastructures integrated on a minimum of satellites that can be placed in either GEO, MEO or LEO (see Annex of this Technical Report).
The propagation delay associated (see Annex of this Technical Report) with these orbits ranges, for the UE to the satellite path, can be summarized in the following table:
UE to satellite Delay [ms] One-Way Max propagation delay [ms]
Min Max
LEO 31530
MEO 274390
GEO 120140280
Further, requirements on Packet Delay Budget between the UE and the UPF are listed in Table 5.7.4-1 "Standardized 5QI to QoS characteristics mapping" as specified in [3].
These 5QI do not make reference to the specific requirements from [2]:
  • The 5G system shall be able to provide services using satellite access.
  • The 5G system shall support service continuity between land based 5G access and satellite based access networks owned by the same operator or by an agreement between operators.
  • To provide services using satellite access, the air interface of the 5G system shall support a one-way latency of up to 280 ms.
Use cases have been identified where the 5G system provides services through a satellite access only, or through a mix of satellite access and terrestrial access. As indicated above, the satellite access can be through LEO, MEO or GEO. The QoS characteristics of a 5G system with satellite access should therefore be mapped against specific 5QI taking into account the nature of the satellite access.
Up

6.2  Potential RequirementsWord‑p. 26
[PR 6.2.001]
A 5G system providing service with satellite access shall be able to support quality of service indicators adapted to the GEO based satellite access with up to 285 ms end-to-end latency.
[PR 6.2.002]
A 5G system providing service with satellite access shall be able to support quality of service indicators adapted to the MEO based satellite access with up to 95 ms end-to-end latency.
[PR 6.2.003]
A 5G system providing service with satellite access shall be able to support quality of service indicators adapted to the LEO based satellite access with up to 35 ms end-to-end latency.
[PR 6.2.004]
A 5G system shall support negotiation on quality of service taking into account latency penalty to optimise the QoE for UE.
[PR 6.2.005]
A UE with satellite access shall have the capability to accept or reject connections with the satellite on the basis on the quality of class of indicators that are supported, and on the basis of the available accesses.
[PR 6.2.006]
A 5G system with multiple access shall be able to select the combination of access technologies to serve a UE on the basis of the targeted priority, pre-emption, QoS parameters and access technology availability.
Up

7  Considerations

7.1  Considerations on security

Potential Requirements addressing security are identified in Section 8 of this document, including considerations on regulatory requirements.
No further specific security considerations have been identified.

7.2  Considerations on charging

[PR 7.2.001]
In a 5G system with satellite access, the 5G system shall be able of generating charging data records identifying separately charging data records associated with the satellite access(es).
[PR 7.2.002]
In a 5G system with satellite access, charging call records associated with satellite access(es) shall include the location of the associated UE(s) during the corresponding session.

7.3  Considerations on roamingWord‑p. 27
Potential Requirements addressing roaming are identified in Section 8 of this document.
No further specific considerations have been identified for what concerns roaming.

7.4  Other considerations

[PR 7.4.001]
In a 5G system with satellite access, mobility management shall take into account any available satellite (radio) access.

8  Potential Requirements

8.1  Connectivity related requirements

[PR 5.2.6.001]
A 5G system supporting satellite access shall be able to optimise the delivery of content when using the 5G satellite access network.
[PR 5.3.6.002]
A 5G system with satellite access shall allow optimal selection of 5G satellite access network or 5G terrestrial access network.
[PR 5.5.6.002]
A 5G system with satellite access shall be capable of establishing independently uplink and downlink connectivity through the satellite and terrestrial access networks.
[PR 5.11.6.003]
A 5G system supporting a 5G satellite access and a 5G terrestrial access shall be able to optimally distribute user traffic over both types of access.
[PR 5.6.6.001]
In a 5G system with satellite access network, a 5G satellite access network shall support 5G access network sharing.
[PR 5.6.6.002]
In a 5G system with satellite access network, a 5G satellite access network shall support 5G CN sharing and it shall support MNOs of different countries attached to the same 5G satellite network.
[PR 5.6.6.006]
A 5G system with satellite access can appear in different configurations, including the following ones:
    1. A 5G satellite RAT
    2. A 5G satellite RAN
    3. A 5G satellite access network
    4. A 5G satellite network
[PR 5.7.6.003]
A 5G system shall be able to support meshed connectivity between satellites based on 5G RAT.
Up

8.2  Roaming related requirements

[PR 5.1.6-002]
A 5G system with satellite access shall enable roaming between 5G satellite access networks and 5G terrestrial access networks.
[PR 5.1.6-003]
A 5G system with satellite access shall support network reselection based on home operator policy, even when a UE is still in coverage of its current network.

8.3  QoS related requirementsWord‑p. 28
[PR 5.6.6.004]
A 5G system with satellite access shall support the management of a 5G satellite network as a radio extension of the 5G terrestrial network with QoS capability.
[PR 5.7.6.001]
A 5G system with global satellite overlay access shall be able to select the communication link providing the UEs the best 5QI with respect to jitter or required bit rates.
[PR 5.7.6.002]
Two 5G systems with satellite access connected to each other shall be able to select the communication link(s) providing the UEs the best 5QI with respect to jitter or required bit rates.
[PR 5.9.6.001]
The 5G system shall support the use of satellite links between the radio access network and core network and within the core network, by enhancing the 3GPP system to handle the latencies introduced by satellite backhaul.
[PR 6.2.001]
A 5G system providing service with satellite access shall be able to support quality of service indicators adapted to the GEO based satellite access with up to 285 ms end-to-end latency.
[PR 6.2.002]
A 5G system providing service with satellite access shall be able to support quality of service indicators adapted to the MEO based satellite access with up to 95 ms end-to-end latency.
[PR 6.2.003]
A 5G system providing service with satellite access shall be able to support quality of service indicators adapted to the LEO based satellite access with up to 35 ms end-to-end latency.
[PR 6.2.004]
A 5G system shall support negotiation on quality of service taking into account latency penalty to optimise the QoE for UE.
[PR 5.12.6.004]
The 5G system with satellite access shall enable the selection of the satellite access per communication service based on QoS requirements (e.g. latency).
[PR 6.2.006]
A 5G system with multiple access shall be able to select the combination of access technologies to serve a UE on the basis of the targeted priority, pre-emption, QoS parameters and access technology availability
[PR 5.12.6.003]
The 5G system with satellite access shall provide suitable interfaces for QoS monitoring of the 5G satellite connection at the 5G satellite UE.
[PR 5.12.6.001]
The 5G system with satellite access shall support high uplink data rates for 5G satellite UEs.
[PR 5.12.6.002]
The 5G system with satellite access shall support high downlink data rates for 5G satellite UEs.
[PR 5.12.6.005]
The 5G system with satellite access shall support communication service availabilities of at least 99.99%.
Up

8.4  UE related requirements

[PR 5.1.6-001]
The 5G system shall provide connectivity with a 5G satellite access network.
[PR 5.3.6.001]
A 5G system supporting satellite access and mMTC and/or Nb-IoT services shall also support mMTC and/or Nb-IoT services on the 5G satellite access.
[PR 5.8.6.003]
A 5G system with satellite RAT shall support mobility management of Relay UEs and the remote UEs connected to the relay UE between 5G RANs
[PR 5.8.6.001]
A 5G system with satellite access shall be able to support Relay UE's with 5G satellite access.
[PR 5.8.6.002]
A 5G system with satellite access shall support roaming of Relay UEs and the remote UEs connected to the relay UE between 5G networks.
[PR 5.2.6-002]
A UE supporting satellite access shall be able to send and receive in parallel via a satellite access network and a terrestrial access network.
[PR 5.3.6.003]
A UE supporting satellite access and MTC and/or Nb-IoT services in 5G networks shall also be able to support mMTC and/or NB-IoT services through the satellite access network.
[PR 5.4.6.002]
In a 5G system with satellite access, UEs with satellite access shall support at least one 5G satellite RAT.
[PR 5.5.6.001]
In a 5G system with satellite access, UEs with terrestrial access and supporting satellite access networks shall be capable of dual connectivity with a satellite access network and a terrestrial access network.
[PR 5.8.6.004]
Relay UEs with satellite access shall be able to provide a minimum set of services with associated QoS to remote UEs
[PR 5.11.6.002]
UEs shall have the capability for simultaneous dual mode of operation, supporting a 5G satellite access and a terrestrial access at the same time.
Up

8.5  Security related requirementsWord‑p. 29

8.5.1  Regulatory requirements

[PR 5.6.6.003]
A satellite access network belonging to different 5G systems of different countries shall be able to meet the corresponding regulatory requirements (e.g. LI).

9  Conclusion and Recommendations

The Feasibility Study on using satellite access in 5G analyses a number of use cases, proposing potential requirements based on those use cases.
The use cases developed for satellite access are the following:
  • Roaming between terrestrial and satellite networks
  • Broadcast and multicast with a satellite overlay
  • Internet of Things with a satellite network
  • Temporary use of a satellite component
  • Optimal routing or steering over a satellite
  • Satellite trans-border service continuity
  • Global satellite overlay
  • Indirect connection through a 5G satellite access network
  • 5G Fixed Backhaul between NR and the 5G Core
  • 5G Moving Platform Backhaul
  • 5G to Premises
  • Off-shore Wind Farms
Potential requirements have been identified for each of these use cases, and were then consolidated in a single list of potential requirements. Furthermore, considerations on security, charging and roaming were provided.
To complement the initial specification of TS 22.261 (Service requirements for next generation new services and markets) requiring that the 5G system shall be able to provide services using satellite access, it is recommended to proceed with normative work based on the potential requirements and the considerations on security, charging and roaming identified in this report.
The text of the present document will not be updated to align with normative specifications.
Up

Up   Top   ToC