Question

Why China telco companies running different network?

Asked by: hongjun

I was wondering why the Chinas government let its 3 telco companies China Mobile, China Unicom and China Telecom operate on three different networks (TD¬SCDMA, WCDMA, CDMA2000)?

My friend asked and I am equally puzzled.

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Asked On
2009-09-14 at 01:16:56ID24728879
Topics

Miscellaneous Networking

,

Cellular Phones & Carriers

Participating Experts
1
Points
500
Comments
4

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Answers

 

by: jfer0x01Posted on 2009-09-14 at 03:57:44ID: 25324250

Hi,

according to Wiki

http://en.wikipedia.org/wiki/Telecommunications_industry_in_China

all three are state owned, so easily enough, they operates in different freq spectrum's,
that way each company is responsible for a certain range or tech.,

2010 MHz - 2025 MHz in China for TD-SCDMA
4.4-5.2 MHz (200 kHz carrier raster) for WCDMA
Uplink :1920~1980MHz      Downlink:2110~2170MHz CDMA2000

as you can see, neither interlaps

http://en.wikipedia.org/wiki/TD-SCDMA

mentions that TD-SCDMA is used to avoid some 3g patent issues, and provide 3g for visitors

and from

http://chinese-school.netfirms.com/articles/Telecommunications-China.html

it's gonna change soon to allow more competitors

Jfer

 

by: hongjunPosted on 2009-09-14 at 07:23:57ID: 25325748

After doing some reading up, it seems like TD-SCDMA is a proprietary to China and so I guess they are tapping onto China Mobile already larger mobile base to grow their own network, thus reducing the need to rely on European and U.S. standards.

Another possibility could be China allow the other 2 providers to have their own infrastructure to save unnecessary cost in building redundant infrastructure like what you have raised. By allowing standards other than China's proprietary, I guess they are reducing risk of TD-SCDMA not working out in the end and also allowing investors to come in and grow the China economy.

hongjun

 

by: hongjunPosted on 2009-09-14 at 07:24:22ID: 25325754

After doing some reading up, it seems like TD-SCDMA is a proprietary to China and so I guess they are tapping onto China Mobile already larger mobile base to grow their own network, thus reducing the need to rely on European and U.S. standards.

Another possibility could be China allow the other 2 providers to have their own infrastructure to save unnecessary cost in building redundant infrastructure like what you have raised. By allowing standards other than China's proprietary, I guess they are reducing risk of TD-SCDMA not working out in the end and also allowing investors to come in and grow the China economy.

hongjun

 

by: jfer0x01Posted on 2009-09-14 at 08:25:26ID: 25326418

perhaps,

in any case, they are planning to expand infrastructure, by allowing more competition,

hope this answered your question

Jfer

20120131-EE-VQP-002

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