technical outcomes and contributions michael fitch · 2020-02-20 · sat5g - satellite and...

Technical outcomes and contributions

H2020 SaT5G Workshop on

5G Satellite Terrestrial Integration for Aircraft

Connectivity, February 6th 2020, Wessling

Michael Fitch

SaT5G - Satellite And Terrestrial network for 5G

❑We focus on eMBB. And we need a way of reaching every terminal

wherever they are:

• The USP of satellite is a high vantage point providing good coverage,

❑ Satellites links have a reputation for being expensive, not easy to

use, having low throughput, and with high latency:

• The cost of ownership reduces with future satellite systems and with

virtualisation of network functions – business aspects of integration

• Adoption of 3GPP into satellite, and use of satellite to meet 5GPPP use-

caes and KPIs enables plug and play – technical aspects of

integration

• Throughput is greater with modern GEO satellites, and with new

upcoming lower orbit systems (MEO, LEO), giving lower costs,

• Latency is lower with upcoming MEO and LEO systems (10s of ms).

❑ Integration will become more important as new MEO and LEO

systems come on line, given their lower costs, greater capacity,

global coverage (and greater complexity).

2

Why do this project

SaT5G - Satellite And Terrestrial network for 5G 3

A pic of satellite orbits, just in case

Earth is 12,742km diameterGEO orbit is 36,000km altitude (24 hour)MEO orbit is 2,000 to 19,000km altitude (2- 10 hours) – O3B is 8063km (4.8 hours) LEO orbit is 600 – 1600km (1.5 to 2 hours)


❑ Identified the most promising use-cases,

❑ Performed techno-economic modelling on those use-cases, including cost of ownership and revenues,

❑ Designed connectivity architectures with plug and play in mind,

❑ Taken steps towards integrating 3GPP 5G with satellite, and produced several satellite VNFs,

❑ Proved integration concepts on two testbeds*, addressed several 5GPPP KPIs,

❑ Contributed heavily to ETSI and 3GPP standards (over

200 contributions).

* 5GIC testbed at UoSurrey / Goonhilly, and Zodiac testbed at ZII / Gilat / Sintra. A 3rd

testbed at UoOulu was set up for NR over satellite.

We have:

4

So what have we done ?

Business

Technical


❑We evaluated many use-cases for greatest potential for market

impact and revenues, and these four came out on top:

1. Edge delivery and offload of content and VNF software,

2. 5G fixed backhaul, for connecting cellular base-stations,

3. 5G to premises, in parallel with fixed network to enhance broadband,

4. 5G moving platform backhaul, such as aeroplanes and trains.

❑We performed quantitative techno-economic analysis of these use-

cases,

❑We included economic modelling of computing and networking

resource for VNFs and network slicing,

❑We modelled each use-case and produced business-specific results,

❑ And we introduced the ‘broker’ concept for multiple MNOs / SNOs.

5

At the business level

More detail and results are in D2.x deliverables, available here: https://www.sat5g-project.eu/public-deliverables/


Focus is on backhaul for now

❑Portable UEs cannot connect directly with satellites yet,

however:

• We have allowed for direct connection in the architecture,

• We have simulated NR over satellite,

❑So our focus is on satellite in the ‘backhaul’ connecting

remote satellite terminals to a gateway:

• Satellite as backhaul ‘pipe’ with no knowledge of slicing, in

‘transport’ mode, with interworking network management,

• Satellite gateway presents to 5G core as a gNB, and remote

terminals present as UEs, in ‘relay’ mode, with interworking /

integrated network management,

• Satellite in parallel with terrestrial links (multi-linking) for

improving broadband.


Connectivity of satellite in 5G


Reference architecture

SAT Network Functionalities

N_i

SAT Network Functionalities

Hybrid Multiplay Functions

Optional, depends on the use case/scenario/implementation

EDGE

5G 3GPP

SatCom specific

5G UE NF_iRAN

SAT GW site

SAT terminal

Hybrid Multiplay Functions

MEC

DN

N_i interfaces viaNon-satellite Link

NF_i Network Function Instantiation,typically UPF

N_i Reference point(s)

DN CDN

5G Core Network

SaT5G key study topics


Supporting technologies developed

❑ Virtualisation of satellite specific functions

• SatRAN function, SaTcore function, L2oS function, Gateway function,

modem function (at least),

• Support to network slicing with VIM / MANO (Openstack and Kubernetes)

❑ Integrated NWM and orchestration

• CN to manage slices over satellite and terrestrial path segments

• Satellite NWM northbound interface to co-ordination function

❑ Multi-link and Heterogeneous transport

• MP-TCP and MP-QUIC algorithms developed and tested

• DASH video over multi-link load sharing algorithm development

❑ Harmonisation of satcom with 5G control and user plane

• Carrier frequency offset and propagation latency solutions developed in

Open Air Interface

❑ Caching and multicast for content and VNF distribution

• Multicast to edge caching developed with lower latency and synchronised

viewing


Example configuration,

indirect 3GPP NTN (ETSI)

From ETSI TR 103 611


Example: MPTCP over satellite / terrestrial

MPQUIC is similar

N3 is interface between gNB and UPF


Use-cases and their architectures

Integration of Satellite with 5G terrestrial networks

UC 1: Edge delivery & offload for multimedia content and MEC VNF software

UC 2: 5G Fixed backhaul

UC 3: 5G to premises UC 4: 5G Moving platform backhaul

Dual connectivity. Connectivity complementing terrestrial networks Broadband connectivity to platforms on the move.

Edge multicasting/broadcast delivery. MEC. Rural deployments in underserved areas.

Demo SaT5G Use Cases 5GPPP high level KPI Testbed

Live over O3B MEO satellites, and emulated over GEO satellite, content and Internet to aeroplane (ZII, Gilat, SES, BPK, i2CAT, Quortus)

Use-case 4, backhaul to moving platforms

Service creation in minutes,

Increased coverageZodiac

Live over GEO satellite, multicast to edge and video display over NR to 5G UE (BPK, UoS, AVA)

SaT5G Use Case 1: Edge delivery & offload for multimedia content and

MEC VNF software

1000x capacity,10x to 100x user data

rate 5GIC

Live over GEO satellite, backhaul architecture to cellular base-station (IDR, UoS, AVA)

SaT5G Use Case 2: 5G Fixed backhaul

Increased coverage5GIC

Live over GEO satellite, DASH over both satellite and terrestrial links (UoS)

SaT5G Use Case 3: 5G to premises10x to 100x user data

rate 5GIC

Live over GEO satellite. MP-QUIC over both satellite and terrestrial links (EKI, AVA)

SaT5G Use Case 3: 5G to premises10x to 100x user data rate 5GIC


❑ The project has made over 200 contributions to 3GPP and ETSI

standards, here are some of the more significant ones:

• 3GPP TR 22.822 “Study on using Satellite Access in 5G”

• 3GPP TR 38.811 “Study on NR to support non-terrestrial networks”

• 3GPP TS 22.261 on satellite access

• 3GPP TR 23.737 “Study on architecture aspects for using satellite

access in 5G; (Release 16)”

• 3GPP TR 38.821 “Study on solutions for NR to support non-terrestrial

networks (NTN) (Release 16)”

• ETSI TR 103 611 ‘Satellite Earth Stations and Systems (SES); Seamless

integration of satellite and / or HAPS (High Altitude Platform Station)

systems into 5G and related architecture options’.

14

At the standards level - some of our contributions


Some SaT5G firsts

❑ Business modelling for satellite integration into 5G

• Identification of most viable use-cases

❑ Adoption of 3GPP network architecture in satellite networks

• Deployment of satellite specific VNFs on Openstack and Kubernetes

❑ Plug and play at MNO level

• Integration of satellite OSS with service orchestrator (MANO)

❑ Demonstration of 5G connectivity including to moving platforms over GEO /

MEO

❑ Demonstration of application layer (5G use-cases and KPIs) over live

satellite links

• Multicast to edge, backhaul to cells, multi-linking and backhaul to moving

platforms.


Questions and comments

Thanks for listening

https://www.sat5g-project.eu


Spare slides


University of Oulu testbed


At the OSS level - interworking (transport mode)

Satellite and MNO OSS need to communicate but are not integrated Can be 3GPP or not


At the OSS level – integration

(relay mode)

Satellite and MNO OSS are integrated and satellite is aware of slicesCan be 3GPP or not, and if not 3GPP, ‘trusted’ or not


❑ Size is 8.3 million Euros,

❑ Timing is 1st July 2017 to 29th February 2020 (33 months),

❑ Partners are [16]:• Avanti (co-ordinator) (UK) – GEO Satellite network operator,

• Thales Alenia Space (France) – Standards,

• University of Surrey (UK) – Testbeds, software development

• SES TechCom (Luxembourg) – MEO / GEO Satellite network operator,

• Airbus Space and Defence (France) – Systems architecture,

• Ekinops (France) – OTT services (multi-linking),

• TNO (Netherlands) – Research institution (MEC, security),

• BT (UK) – Mobile and fixed Network Operator, and service provider,

• Zodiac (Germany) – Aircraft Infotainment systems,

• Broadpeak (France) – OTT services (content distribution),

• Gilat Satellite Networks (Israel) – Satellite terminal vendor,

• ST Engineering (iDirect) (Ireland) – Satellite terminal vendor/ system provider,

• IMEC (Belgium) – Research institution (business modelling),

• i2CAT (Spain) – Research institution (MANO),

• University of Oulu (Finland) – Analysis of NR over satellite,

• Quortus (UK) – Core network supplier.

21

Sat5G size, timing and partners


❑At multiple levels:

• At the business level, modelling costs of use-cases

• At the connectivity level

➢ Support to control and user plane separation and network slicing

➢ Virtualisation of satellite-specific network functions (VNFs)

➢ KPIs derived from high level 5G KPIs

• At the OSS level

➢ Autonomy, so that the user doesn’t have to do anything (plug and play)

➢ Single core network

• At the standards level

➢ To enable industry take up

➢ Through contributions to 3GPP, ETSI, ITU, IETF groups

22

Integration of satellite – bit more detail


❑Portable UEs cannot currently connect

directly with satellites but:

• We have allowed for direct connection in the

architecture,

• We have simulated NR over satellite,

❑We developed these forms of connectivity:

• Satellite terminals as ‘non-terrestrial’ UEs,

• Satellite to connect core networks to the

cellular network edge, including with MEC

facilities,

• Satellite to connect core networks to moving

platforms such as aircraft,

• Satellite to connect core networks to premises

in parallel with terrestrial connections (xDSL).

23

At the connectivity level

Edge delivery

and ‘backhaul’

with or without

multicast

Multi-linking


High level KPI 5GPPP

Satellite segment

Performance Caching Traffic

Service creation in minutes

Service creation time, QoS support, Reliability,Satellite VNFs performance

1000x capacity

Efficiency of caching algorithms,Multicast usage on satellite link

Traffic density increase

Increased coverage

Satellite backhaul performance

10x to 100x user data rate

Peak data rate decrease

Multilink performance

Key Performance Indicators

technical outcomes and contributions michael fitch · 2020-02-20 · sat5g - satellite and...

Documents