5G网络切片白皮书（英文版）

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5G Service-Guaranteed

Network Slicing

White Paper

Issue V1.0

Date 2017-02-28

China Mobile Communications Corporation, Huawei Technologies Co., Ltd., Deutsche Telekom AG，Volkswagen

revious generations of mobile networks enabled voice, data, video, and other life-changing services. In

omparison, 5G will change our society by opening up the telecom ecosystem to vertical industries. 5G will help

ertical industries to achieve the “Internet of Everything” vision of ubiquitously connected, highly reliable,

ltra-low latency services for massive number of devices. Service-guaranteed network slicing introduced in this

hite paper is one of the essential features for 5G to achieve this vision. Key players from operators, vendors, and

ertical industries have come together to establish a common understanding on service-guaranteed network slicing

n terms of the vision, end-to end (E2E) solution, key enabling technologies, and the impacts for vertical industries.

his white paper describes the thinking on network slicing in 5G.

Abstract

Previous generations of mobile networks enabled voice, data, video, and other life-changing

services. In comparison, 5G will change our society by opening up the telecom ecosystem to

vertical industries. 5G will help vertical industries to achieve the “Internet of Everything” vision

of ubiquitously connected, highly reliable, ultra-low latency services for massive number of

devices. Service-guaranteed network slicing introduced in this white paper is one of the essen-

tial features for 5G to achieve this vision. Key players from operators, vendors, and vertical

industries have come together to establish a common understanding on service-guaranteed

network slicing in terms of the vision, end-to end (E2E) solution, key enabling technologies, and the

impacts for vertical industries. This white paper describes the thinking on network slicing in 5G.

1. Industry Trends and Requirements

2. Visions of Service-Guaranteed Network Slicing

3. Overall Architecture of Service-guaranteed Network Slicing

3.1 Concepts

3.2 Concept Clariﬁcations

3.3 Architecture

4. Key Technologies to Enable Service-Guaranteed Network Slicing

4.1 Network Management System

4.1.1 Network Slice Management (NSM) Architecture

4.1.2 Network Capability Exposure via Business Support System

4.1.3 Third-party Applications

4.2 Security

4.2.1 Infrastructure Security

4.2.2 Network Management Security

4.2.3 NSI Security

4.3 Enabling Technologies for Different Technical Domains

4.3.1 Access Network

4.3.2 Core Network

4.3.3 Transport Network

4.3.4 Terminal

4.4 Technology Evolution

5.Use Case for Service-Guaranteed Network Slicing

6.Summary and Suggestions

Table of Contents

The 5G networks are not only envisioned as a

support for “Internet of Things” (IoT), but also as

means to give rise to an unprecedented scale of

emerging industries, instilling an inﬁnite vitality

in future telecommunications. IoT requires

support for a diverse range of service types, such

as eHealth, Internet of Vehicles (IoV), smart

households, industrial control, environment

monitoring, and so on. These services will drive

the rapid growth of IoT and facilitate hundreds of

billions of devices to connect to the network,

which also conceives the “Internet of Everything”

vision especially from vertical industries.

The requirements for IoT services are also very

• Service diversity

The services foreseen in the 5G era fall into three

typical scenarios: enhanced Mobile Broadband

(eMBB), Ultra-Reliable and Low Latency Commu-

nications (URLLC), and massive Machine Type

Communications (mMTC). eMBB focuses on

services characterized by high data rates, such as

high deﬁnition (HD) videos, virtual reality (VR),

augmented reality (AR), and ﬁxed mobile conver-

gence (FMC). URLLC focuses on latency-sensitive

services, such as self-driving, remote surgery, or

drone control. mMTC focuses on services that

have high requirements for connection density,

such as those typical for smart city and smart

agriculture use cases. Each scenario requires a

completely different network service and poses

requirements that are radically different, some-

times even contradictory.

diverse. Services such as smart households,

smart grid, smart agriculture, and intelligent

meter reading, will require supporting an

extremely large number of connections and

frequently transmitted small data packets.

Services such as smart vehicles and industrial

control will require millisecond-level latency and

nearly 100% reliability, while infotainment

services will require extreme ﬁx/mobile broad-

band connectivity. These requirements indicate

that the 5G networks need be more ﬂexible and

scalable to support massive connections of

different nature. Meanwhile, operators will

perform a gradual shift away from pipe services

towards coping with vertical industry needs:

• Guaranteed performance

Several key performance indicators (KPIs) must

be simultaneously satisﬁed for some of the

above-mentioned services. For example, VR and

AR have strict requirements on data rate as well

as latency. Such demands become more strin-

gent for vertical industries, where the terminals

are normally "machines" with very low tolerance

on performance degradation.

• Fast deployment and short time-to-

market (TTM)

It is a long process to deploy conventional mobile

networks. A simple service update may take from 10

to 18 months. Such long cycles are very difﬁcult to

meet tailored and fast service provisioning and

short TTM demands from vertical industries.

• Resource multiplexing and isolation

Different from current telecom practice, vertical

industries are likely to get involved with special-

ized network functions (dedicated routing,

mobility support, customized ﬂow handling,

in-network processing, etc.). To handle such

diversity without losing operation efﬁciency,

operators prefer to use resource multiplexing

approach with secured isolation provisioning.

• Automation

Flexibility and scalability are the key features of

the 5G networks. Such networks cannot depend

on manual management. Fully automatic network

management techniques, such as self-diagnosis,

self-healing, automatic conﬁguration, self-

optimization, and auto installation/plug-and-

play, are fundamental to achieve efﬁcient

network operations and to provide the dynamic

service mix. With the progress of the automatic

network management techniques, management

will become more agile and more adaptive. New

tools for such management are required; in

particular, artiﬁcial intelligence (AI) and auto-

matic learning techniques should be considered

for the 5G networks.

• New ecosystem and business model

The 5G networks will support new roles and

business models, which may involve network

infrastructure providers, operators (mobile

network operators, mobile virtual network

operators, etc.), and vertical service providers.

These new roles and business relationships help

the telecom industry to build a new ecosystem

together with vertical industries.

• Convergence of ﬁxed and mobile access

FMC is also a very important requirement,

because customers do expect the same user

experience regardless of the access technology

used. While today the architectures, service

concepts and ecosystems of ﬁxed and mobile

networks differ in many aspects, it is envisioned

that with 5G these will converge. An architecture

that can natively handle all kinds of ﬁxed and

mobile access technologies will contribute

signiﬁcantly to enable the design goal of truly

converged 5G networks.

1. Industry Trends and

Requirements

• Service diversity

The services foreseen in the 5G era fall into three

typical scenarios: enhanced Mobile Broadband

(eMBB), Ultra-Reliable and Low Latency Commu-

nications (URLLC), and massive Machine Type

Communications (mMTC). eMBB focuses on

services characterized by high data rates, such as

high deﬁnition (HD) videos, virtual reality (VR),

augmented reality (AR), and ﬁxed mobile conver-

gence (FMC). URLLC focuses on latency-sensitive

services, such as self-driving, remote surgery, or

drone control. mMTC focuses on services that

have high requirements for connection density,

such as those typical for smart city and smart

agriculture use cases. Each scenario requires a

completely different network service and poses

requirements that are radically different, some-

times even contradictory.

• Guaranteed performance

Several key performance indicators (KPIs) must

be simultaneously satisﬁed for some of the

above-mentioned services. For example, VR and

AR have strict requirements on data rate as well

as latency. Such demands become more strin-

gent for vertical industries, where the terminals

are normally "machines" with very low tolerance

on performance degradation.

• Fast deployment and short time-to-

market (TTM)

It is a long process to deploy conventional mobile

networks. A simple service update may take from 10

to 18 months. Such long cycles are very difﬁcult to

meet tailored and fast service provisioning and

short TTM demands from vertical industries.

• Resource multiplexing and isolation

Different from current telecom practice, vertical

industries are likely to get involved with special-

ized network functions (dedicated routing,

mobility support, customized ﬂow handling,

in-network processing, etc.). To handle such

diversity without losing operation efﬁciency,

operators prefer to use resource multiplexing

approach with secured isolation provisioning.

• Automation

Flexibility and scalability are the key features of

the 5G networks. Such networks cannot depend

on manual management. Fully automatic network

management techniques, such as self-diagnosis,

self-healing, automatic conﬁguration, self-

optimization, and auto installation/plug-and-

play, are fundamental to achieve efﬁcient

network operations and to provide the dynamic

service mix. With the progress of the automatic

network management techniques, management

will become more agile and more adaptive. New

tools for such management are required; in

particular, artiﬁcial intelligence (AI) and auto-

matic learning techniques should be considered

for the 5G networks.

• New ecosystem and business model

The 5G networks will support new roles and

business models, which may involve network

infrastructure providers, operators (mobile

network operators, mobile virtual network

operators, etc.), and vertical service providers.

These new roles and business relationships help

the telecom industry to build a new ecosystem

together with vertical industries.

• Convergence of ﬁxed and mobile access

FMC is also a very important requirement,

because customers do expect the same user

experience regardless of the access technology

used. While today the architectures, service

concepts and ecosystems of ﬁxed and mobile

networks differ in many aspects, it is envisioned

that with 5G these will converge. An architecture

that can natively handle all kinds of ﬁxed and

mobile access technologies will contribute

signiﬁcantly to enable the design goal of truly

converged 5G networks.

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5GService-GuaranteedNetworkSlicingWhitePaperIssue V1.0Date 2017-02-28China Mobile Communications Corporation, Huawei Technologies Co., Ltd., Deutsche Telekom AGVolkswagenPreviousgenerationsofmobilenetworksenabledvoice,data,video,andotherlife-changingservices.Incomparison,5Gwillchangeoursocie...

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