Zhang DongchenChina Mobile Communication Corporation, China

March 2011

Consideration on the future

development of mobile service

2

Contents

The Network Development of China Mobile

Considerations on Spectrum Insufficiency

of IMT

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The development of mobile service in China

In the past decade, mobile communications have been growing rapidly in China, which makes a strong impact on our daily lives

By the end of 2010, the total number of national telephone users has reached 1153.39 million.

The number of mobile telephone users has reached 859 million

The number of 3G users has reached 47.05 million

The mobile tele-density in China is: 64.4 telephones /100 people

The growth rate of mobile phone in every month The proportion of mobile telephone users

Fixed telephone users Mobile telephone users

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GSM and TD-SCDMA network

As the largest telecom operators in the world, China Mobile

has played a very important role in the development of mobile

service in China

The world's largest GSM network

More than 500,000 GSM Base Stations

More than 580 million users

Continued expansion in TD-SCDMA

network coverage

Covering 656 cities with 135,000 base

stations in operation at the end of 2010

Steady growth of 3G users:

22.636 million at the end of Jan 2011

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The development of TD-LTE network

TD-LTE is China Mobile’s future

Successful TD-LTE demonstration during Shanghai World Expo

演艺中心

世博轴

中国馆

世博中心

主题馆

Coverage: 5.28 square km

Data rate: 70Mbps

Outdoor BS: 17

Indoor coverage system: 8

Operating band: 2.3GHz

Users are enjoying various high quality

mobile broadband services

Successful TD-LTE demonstration during Guangzhou Asian Games

Provide service such as high definition broadcast, mobile video monitoring, 3D games and high-speed Internet access etc

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The development of TD-LTE network

Beijing

Field Trial:

4 VendorsField Trial:

5 Vendors

Lab Test:

9 Vendors

Trials are ongoing in China

Nanjing

Shanghai

Hangzhou

Xiamen

Shenzhen

Beijing

Guangzhou

Lab Test: all system testes have been finished by Jan. 2010

Field Test: finished by the end of 2010

Results show networking capability starts to be supported

Large-scale pre-commercial trial will

be carried out in 6 cities this year.

Will deploy more than 3600 base-

stations by the end of this year

Operating band: 2.6GHz&2.3GHz

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Service provided by multiple networks

The traditional voice service is mainly carried by GSM network, and will grows steadily in the future

value-added data service will mainly carried by TD-SCDMA and future TD-LTE network

The income of data service has increased very rapidly due to the application of smart terminal and increase in mobile network bandwidth

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Service provided by multiple networks

Data traffic becomes driving force for the growth of value-added business revenue

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The problem of spectrum insufficiency

Traffic trends of mobile communication

•Constructing and operating multiple networks at the same time

will further aggravate spectrum insufficiency

As the traffic capacity of mobile communications, especially the data

traffic, increased rapidly, the spectrum of IMT is increasingly

insufficient

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Solution to the spectrum insufficiency

Technical Method

Improve network capacity by

narrowing the distance between BSsthe distance between some base stations

in urban is less than 200 meters

Maximum the network

potential by automatic

frequency optimizationIt has been widely adopted in

China mobile’s network

Further improvement of current network is limited

Method 1: Network optimization

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Solution to the spectrum insufficiency

ITU-R will finish the arrangement of IMT spectrum allocated at WRC07 in 2011

This is a very effective method which can obtain obvious effect in a short period

ITU region 2

ITU region 3

ITU region 1

450 470 790 960 1710 2025 2110 2200 2300 2400 2500 2690 3400 3600862

450 470 698 960 1710 2025 2110 2200 2300 2400 2500 2690 3400 3600806

450 470 698 960 1710 2025 2110 2200 2300 2400 2500 2690 3400 3600790/806

being arranged has been arranged

Method 2:

Accelerate the frequency arrangement for implementation of IMT

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2010 2015 2020

and before

2010 2015 2020

Solution to the spectrum insufficiency

Method 3: Acquire more frequency spectrum for IMT

（a) Developed area for mobile service (b) Developing area for mobile service

require

ments

（MH

z

）

ITU forecast on the spectrum requirement in the future

Although this method will take a long time, it is the basic and most effective solution to fulfill

the frequency requirement in the future

According to the prediction from ITU, the requirement for mobile service frequency will be

around 1300MHz.

At present, only about 1100MHz spectrum identified for IMT, still has hundreds of MHz frequency

gap

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Some techniques to enhance spectrum efficiency, i.e. SDR &CRS,

are studied.

Considerations:

QoS of IMT service should be guaranteed sufficiently when the new

techniques are implemented

Some time, supports from administrative policy are needed

Cannot solve the issue in recent years.

Frequency occupancy status in 698-806MHz700 710 720 730 740 750 760 770 780 790 800

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50698-806 f-band ave power

ave

pow

er [d

Bm

]

Frequency [MHz]

Solution to the spectrum insufficiency

Method 4: Some spectrum efficiency enhancing techniques

Frequency occupancy status in GSM 900

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More spectrum to unlock the constraints on IMT development!