OpenAirInterface Enables

Satellite-5G Integration

China Satellite Communications Co. Ltd.

Dec. 2019

Content

What we are doing

What we do with OAI

Who we are

What we are doing

Development history

Throughout the development of communication technology, from the earliest 1G to today's 4G, the

communication rate is getting higher and higher;

5G compared to 4G, in capacity, bandwidth, delay and other communication indicators have a huge improvement

in all aspects；

However，the limitations of ground-based network coverage are not fundamentally addressed。 3

4

The network of satellite communications is very wide and is almost unconstrained by geographical circumstances. Satellite communication can assist 5G network to build a seamless global coverage of the sea, land, air, sky integrated communications network, to meet the user's ubiquitous multi-business needs.

What are we doing

Demand for satellite

Standardization

What we are doing

ITU has carried out satellite and 5G fusion research on ITU-R M. (NGAT_SAT) and

proposed four application scenarios for star-earth 5G fusion.

Trunking and Head-

end Feed

Communications

on the Move

Backhauling and

Multicasting Tower Feed

Hybrid Multiplay

5

3GPP has set up four research projects and technical standards related to 5G satellite

communications in the SA and RAN working groups, and has carried out specific research

and analysis on the deployment and application scenarios of satellite networks

2016.8Add satellite communications to standards discussions

RAN#72 TR38.913《Study on Scenarios and Requirements for Next Generation Access Technologies》

SA1#75 TS22.261《Service requirements for the 5G system》

2016.10 Set up

2017.5 Set up

RAN#76 TR38.811《Study on New Radio (NR) to support non-terrestrial networks》

SA1#80 TR22.822《Study on using Satellite Access in 5G》

2017.12 Set up

Standardization

What we are doing

6

The SaT5G project today announced the operation of a number of successful

demonstrations of 5G over satellite at the EuCNC 2019

SaT5G

What we are doing

7

The demonstration showcases over-

the-air GEO satellite multicast

technology for the delivery of live

channels using a MEC platform for

Content Delivery Network (CDN)

integration with efficient edge content

delivery.

Consensus: Satellite communications are an important part of 6G

Neil McRae, chief network architect of BT Group, has launched a disussion -

6G will be “5G + satellite network （communications, telemetry,

navigation）"

On March 24-26, 2019, "The world's first 6G wireless summit" was held at

Olu University, where ericsson, Huawei and dozens of other manufacturers

and operators attended the conference to discuss the development of 6G

technology, including "AI", "THz", "Satellite" and so on.

Future Network

What we are doing

9

As China's largest satellite operator, in order to

expand the satellite communication

application scenario, support the development

of 5G network, explore the future of network

technology, China Satcom is carrying out

research work on the integration of satellite

Internet and 5G, building a satellite 5G DEMO

over in-orbit GEO communications satellites.

Research on satellite-5G integration

What we are doing

10

Content

What we are doing

What we do with OAI

Who we are

What we need

What we do with OAI

。。。

What we need is a 5G network solution and environment that supports

iterative upgrades, targeted development for Satellite-5G Integration, as

well as implementation and testing of research results, demonstration.

So, we choose OpenAirInterface

What we need

What we do with OAI

Flexible Low cost

TCP / GTP acceleration No TCP / GTP acceleration

Due to the limited satellite channel capacity, TCP process will inevitably become congested, and the large delay will affect the efficiency of data retransmission. The header of the GTP protocol will be compressed in base station backhaul mode. Inside the GTP tunnel, the TCP protocol is accelerated, including removing the TCP

congestion window restrictions, TCP ACK protocol spoofing.

TCP/GTP acceleration

What we do with OAI

What we do with OAI

Use case: Fixed scenarios

15

Outdoor Indoor

What we do with OAI

Use case: Portable scenarios

The main advantages of this structure ：

Avoiding satellite bandwidth and latency

limits by using MEC；

Relieving the pressure of terrestrial

transmission networks by satellite

broadcasting.

17

What we do with OAI

Use case：MEC and CDN

Relying on satellite broadcasting, popular

video content is sent to the base station

through satellite and stored in the MEC

server. After receiving the user request, it

is pushed by the MEC server.

5GC-U

5GC-C

MEC

ME-APP

UPF

RAN-CU

C面数据

少部分U面数据

大部分U面数据

Push

Pull

Satellite Gateway

gNB with MEC

组成示意图

Content Server

Imagination of the Future: Network slicing

On-board, ship-borne, home

Internet and other broadband

services

Narrow band business such as data acquisition and Internet of

Things

Home radio and television,mobile multimedia, car

networking and other broadcasting services

Broadband slices

Narrowband slices

Broadcast slices

What we do with OAI

Content

What we are doing

What we do with OAI

Who we are

China Satellite Communications Co. Ltd. (China Satcom，601698.SH) is a core

subsidiary of China Aerospace Science and Technology Corporation (CASC) for

satellite operation.

Profile

About China Satcom

21

130E ChinaSat-6C 134E APSTAR-6

134E APSTAR-6C

138E APSTAR-5C

142E APSTAR-9

125E ChinaSat-6A

51.5E ChinaSat-15 76.5E APSTAR-7

87.5E ChinaSat-12 92.2E ChinaSat-9

98E ChinaSat-11

101.4E ChinaSat-9A

110.5E ChinaSat-10

110.5E ChinaSat-16

115.5E ChinaSat-6B

1 5 in - o r b i t s a te l l i tes

Rich resource

About China Satcom

22

The regions can be covered very well by China satellite fleet in various orbit location, multi frequencies and broad coverage.

Taking advantage of broad coverage, fast deployment, local operators can set up telecommunication links quickly in remote areas.

Rich resource

About China Satcom

23

In the future, with launching of ChinaSat

26, 27 and 19, the capacity covering China

and ocean will be enhanced, and extend to

Pan-Asia regions.

In April 2017, Chinasat-16 was

successfully launched, ushering in a

new era of China's satellite Internet

High Throughput Satellite

About China Satcom

Development

Efficient use of

satellite

resources

• Links to the

satellite and the

ground

• Expanding satellite

application

scenarios

Optimize the

system design

•Understand the

needs of satellite

projects

•Optimize the

design of the

ground system

Supporting the

network of the

future

•Supporting

construction of

the nation's NG-

Network

About China Satcom

25

Preparation of satellite Internet laboratory/Research Centre

合作愿景

About China Satcom

China Aerospace Science and Technology Corporation(CASC)

Satellite Internet Laboratory Internal units External experts

Technical programmes and standards

systems

Innovative equipment

and applications

Innovative applications and business

models

Innovative research talent in the field of

satellite communications

Guarantee of operations and management

Guarantee of satellite resources

Openness and Cooperation

Experts guidance

Output Output Output Output

Thank you for your attention