Basic knowledge about WCDMA

Basic knowledge about WCDMA

Original address: http://telecom-it.csdn.net/articles.aspx? Pointid = 26

1. Why the actual use of WCDMA is much more stable than TD-SCDMA network?
WCDMA is a stable transition over GSM with high compatibility.

2. I usually have a busy business and want 3G video calls. Which domestic standard is the most widely used abroad?
WCDMA

3.in the 3G era, what are the three Nos proposed by China Unicom when promoting WCDMA? Three no, that is, do not change the card, do not change the number, do not register, instantly enjoy WCDMA

4.3g is coming. I want to try it out. I am using the amount of the delivery phone. Where can I try it?
Currently, both mobile phones support WCDMA. You only need to insert any connected SIM card after March May 17 to enjoy 3G life.

5. Which of the following sections can directly use China Unicom's WCDMA 3G business?
130, 131, 132 152, 156, 186

6. As of the 3rd quarter of, how many million users had WCDMA?
More than 0.26 billion users

7. What is the biggest difference between China Unicom WCDMA and the original 2G network in actual use? High-speed mobile internet connection anytime, anywhere Communication experience

8. What is the full name of 3G?
3rd generation third-generation digital communication

9. How many mainstream 3G standards are there in the world?
4 types, WCDMA and TD-SCDMA, CDMA 2000 and WiMAX

10. Which of the following communication operators in China has obtained the most widely used and mature 3G standard licenses in the world?
China Unicom

11. On which day will China Unicom announce its official launch of WCDMA?
May 17 International Telecommunication Day

12. Which 3G standard is the most widely used in the world?
WCDMA

13. Why is WCDMA more competitive?
Highest maturity, most stable system operation, more advanced technology

14. Which of the following is a WCDMA mobile phone?
Communication computing entertainment Health Information

15. Currently, the popular nokia5800 and Apple iPhones are all 3G mobile phones. Which 3G standard do they support?
WCDMA

16. How many of the world's five major carriers, namely at&t, NTT, Verizon, T-Mobile, and Telefonica, use WCDMA as the 3G standard?
Four

Among the four major 17.3g standards, which one has received support from more than terminal manufacturers?
WCDMA

18. Do you know how many manufacturers have provided more than how many WCDMA mobile phones?
More than 150, more than 2000

19. What is the mainstream 3G standard supported by the widely used iPhone in foreign countries?
WCDMA

20. Which of the following vendors place their major product sequences in the production of WCDMA terminals?
Nokia, Sony Ericsson, apple, Samsung, LG Motorola, Sanyo, sharp, Sony, Fujitsu, Panasonic Zhongxing, Huawei, Casio, and Zang Kang

21. Is it possible to use mobile mail only 3G?
No, it can be used in a 2G network environment, but the 3G network environment improves the usage conditions, so we can use it more quickly.

22. How has China Unicom's WCDMA 3G business changed compared with the 2G business?
Added 3G functional and 3G application services for 2G functional services

What is the change in cell phone TV in the 23.3g network compared with cell phone TV in the 2G network? Three business models and four technical methods are used in combination, instead of a single On-Demand Streaming Media in a 2G network environment.

24. What services will China Unicom's WCDMA provide for the mobile music business?
Member Service, karaoke, local mobile music management dynamic list, associated music recommendations, new album release of music magazines, music search

25. Which of the following describes the relationship between 2G and 3G services?
Most of the 3G businesses are independent of 2G businesses. 3g businesses are derived from 2G businesses, and higher than 2G 3G businesses are post-modernization of 2G businesses.

26. What is the data service that highlights the 3G broadband advantage most?
Video calls

27. What is the difference between WCDMA's Internet access speed and charging standard and the GPRS/edge in the 2G age?
Compared with traditional 2G mobile phones, WCDMA is faster, and the billing mode is more user-friendly. There are two types of subscription and practical real-time charging, which are more cost-effective.

28. What is the downlink peak speed of China Unicom's WCDMA high-speed mobile Internet access?
Which of the world's 237 commercial networks rank? The speed exceeds 2 Mbps, leading

29. What is the most representative combination of data and voice services?
Video calls

30. In which of the following countries and regions can I use a WCDMA mobile phone for roaming?
Japan, Singapore, France, Germany, UK, and Hong Kong