3G: The third generation of mobile communication technology (English: 3rd-generation) refers to cellular mobile communication technology that supports high-speed data transmission. 3G service can transmit voice (calls) and data information (e-mail, instant messaging, etc.) simultaneously. The representative feature is to provide high-speed data services.
3G[4] is the abbreviation of the 3rd Generation in English, which refers to the third generation of mobile communication technology. Compared with the first generation of analog mobile phones (1G) and the second generation of digital mobile phones (2G) such as GSM and CDMA, the third generation of mobile phones (3G) generally refers to the combination of wireless communications [5] with multimedia communications such as the Internet. a new generation of mobile communication systems.
The main difference between 3G[6] and 2G is the improvement in the speed of transmitting voice and data. It can better achieve wireless roaming around the world and process images, music, video streams, etc. A variety of media forms are provided, including web browsing, telephone conferencing, e-commerce and other information services. Good compatibility with existing second-generation systems must also be considered. In order to provide this service, the wireless network must be able to support different data transmission speeds, which means that it can support at least 2Mbps (megabits per second) and 384kbps (kilobits per second) in indoor, outdoor and driving environments respectively. And a transmission speed of 144kbps (this value will change depending on the network environment). 3G is the third generation communication network. Currently, the country does not support networks other than GSM and CDMA. GSM equipment uses frequency division multiple access, while CDMA uses code division spread spectrum technology. Advanced power and voice activation can provide at least 3 times more power. GSM network capacity, the industry regards CDMA technology as the mainstream technology of 3G. The ITU has determined three wireless interface standards, namely CDMA2000, WCDMA, and TD-SCDMA, which means that domestic CDMA can smoothly transition to 3G network. The main features of 3G are Can provide mobile broadband multimedia services.
The first generation of analog mobile phones (1G) that came out in 1995 can only make voice calls;
The second generation of digital mobile phones such as GSM and CDMA that appeared from 1996 to 1997 ( 2G) adds the function of receiving data, such as receiving emails or web pages;
In fact, 3G was not born in 2009. 3G was already produced abroad as early as 2007, and China also launched it in 2008 China's 3G was successfully developed in 2011, with a theoretical peak download speed of up to 3.6Mbit/s (one theory is 2.8Mbit/s) and a peak uplink speed of 384kbit/s. It is impossible to be 2G per second as mentioned on the Internet. Of course, the next movie cannot be completed instantly.
[Edit this paragraph] 3G background introduction
On June 2, 2008, China Telecom, China Unicom and China Netcom H-share companies all issued announcements announcing the details of telecom restructuring. At this time, it has just been six and a half trading days since the above-mentioned operators were suspended due to telecommunications restructuring on May 23. With the determination of the telecom restructuring plan: China Mobile, China Railcom = China Mobile, China Unicom (CDMA network), China Telecom = China Telecom, China Unicom (GSM network), China Netcom = China Unicom, China's telecom operators have formed a tripartite trend. In this telecommunications reorganization, China Tietong was merged into China Mobile Group and became a wholly-owned subsidiary of China Mobile. So previously, both fixed-line and broadband users of China Railcom were converted to users of China Mobile. With the completion of the "six-in-three" reform and reorganization, three 3G licenses will also be issued. Some experts estimate that according to the progress, the country may issue 3G licenses in the fourth quarter of this year, and China will enter the third quarter at the earliest in the third quarter of next year. modern mobile communications era. The three 3G cards that will be distributed basically adopt three different standards. TD-SCDMA (Time Division Synchronous Code Division Multiple Access) is a 3G standard independently developed by China. It has been accepted by the International Telecommunications Union. It is similar to WCDMA (Wideband Code Division Multiple Access) and CDMA2000 is collectively known as the three mainstream standards of 3G in the world.
According to the telecommunications industry restructuring plan, the way 3G licenses are issued is: New China Mobile obtains the TD-SCDMA license, New China Telecom obtains the CDMA2000 license, and China Unicom obtains the WCDMA license.
[Edit this paragraph] 3G China
3G China logo 3G China is the registered trademark of China's largest professional 3G mobile network business service platform. 3G China includes industries, enterprises, products, services and trade functions. It is an integrated system service platform for enterprises to realize WAP website construction, industry new media communication, mobile commerce operations, and wireless timely communication on the 3G network. It promotes industry integration. The concept and the new marketing model of 3G network wireless communication form a 3G wireless information network. All its function settings and value-added services provide users with a complete and efficient 3G experience, perfectly reflecting the strong business connotation of the 3G era.
Today, China has become the world's largest consumer of mobile communications. In 2008, China's mobile communications users exceeded 600 million. A series of new developments in the mobile Internet, such as mobile news, mobile blogs, and mobile phone sending and receiving emails, have become popular. However, all of this is only applied to individuals. The demand for mobile commerce applications is becoming more and more urgent. It is the biggest challenge for today's enterprises to enable enterprises to realize information interaction between enterprises and users through the mobile Internet, and to carry out in-depth and all-round applications. With the establishment of the Ministry of Industry and Information Technology, the launch of "3G China" has become an important step in the next step of "promoting industrialization through informatization".
3G will bring new enjoyment to life
●3G is like video conferencing in a taxi;
●3G is like taking a train and you won’t miss it soap opera;
●3G is about sending images from the field back to the headquarters for analysis;
●3G is about enjoying your wonderful vacation in Morocco with your friends.
China's 3G road has just begun. The first popular 3G application is "wireless broadband Internet access". 600 million mobile phone users can access the Internet anytime and anywhere. The streaming media business of wireless Internet will gradually become dominant. The core applications of 3G include:
1. Broadband Internet access
Broadband Internet access is a very important function of 3G mobile phones. By then, we can send and receive voicemails, write blogs, etc. on our mobile phones. Chatting, searching, downloading ringtones, etc. Nowadays, many people think that these functional applications on mobile phones have to wait until the 3G era, but in fact, the current wireless Internet portals can already provide them. Although the current GPRS network speed is not very satisfactory, with the advent of the 3G era, turning a mobile phone into a small computer is no longer a dream.
2. Video call
In the 3G era, traditional voice calls are already a very weak function. By then, new services such as video calls and voicemail will become mainstream, and traditional voice calls will become mainstream. Call rates will be reduced, and visually impactful, fast and direct video calls will become more popular and develop rapidly.
What has been talked about most in the 3G era is the video calling function of mobile phones, which is also one of the most popular 3G services abroad. I believe many people have used the video chat function of QQ, MSN or Skype to chat "face to face" with relatives and friends far away. In the future, relying on the high-speed data transmission of the 3G network, 3G mobile phone users will also be able to "interview". When you use a 3G mobile phone to make a video call, you no longer hold the phone to your ear, but face the phone and put on a wired headset or Bluetooth headset. You will see the other party's image on the phone screen, and you will also see the other person's image on the phone screen. Be recorded and sent to the other party.
3. Mobile TV
From the operator level, the issuance of 3G licenses has solved a big technical obstacle, and the construction of standards such as TD and CMMB has also promoted the entire industry. development. Mobile streaming media software will become the most used mobile TV software in the 3G era. It will continue to improve the smoothness and picture quality of video images, break through technical bottlenecks, and be truly applied on a large scale.
4. Wireless search
For users, this is a more practical mobile network service and can be quickly accepted.
Searching on mobile phones anytime and anywhere will become a common living habit for more mobile phone users.
5. Mobile music
In Japan, where the wireless Internet is mature, mobile music is the most beautiful scenery. Downloading music online through mobile phones is 50 times that of computers. In the 3G era, as long as a mobile music software is installed on the mobile phone, the mobile phone can be transformed into a music box anytime and anywhere through the mobile network, easily storing countless songs, with faster download speed and almost negligible data consumption.
6. Mobile shopping
Many people have shopping experience on Taobao, but mobile shopping malls are still new to many people. In fact, mobile e-commerce is the favorite of mobile Internet users in the 3G era. At present, 90% of Japanese and Korean mobile phone users are accustomed to making purchases on their mobile phones, even buying daily necessities such as rice and washing powder. Experts predict that mobile shopping in China will have a period of rapid growth in the future. As long as users activate mobile Internet services, they can check product information through their mobile phones and pay for products online. High-speed 3G can make mobile shopping more practical. High-quality pictures and video conversations can bring businesses and consumers closer, improve shopping experience, and make mobile shopping a new trend.
7. Mobile online games
Compared with computer online games, the experience of mobile online games is not good, but it is easy to carry and can be played at any time. This kind of online game that takes advantage of fragmented time is Currently the new favorite among young people, it is also an important capital growth point in the 3G era. After the arrival of the 3G era, the gaming platform will be more stable and faster, with higher compatibility, that is, "more fun", like an upgraded version, allowing users to have a better experience in the visuals and effects of the game.
Only one week after the State Council executive meeting approved the launch of 3G licenses, the Ministry of Industry and Information Technology quickly issued 3G licenses to the three major operators. The Ministry of Industry and Information Technology announced that it has approved China Mobile Communications Group Co., Ltd. to increase its 3G business operating licenses based on the TD-SCDMA technology standard, China Telecom Group Corporation to increase its 3G business operating licenses based on the CDMA2000 technology standard, and China United Network Communications Group Co., Ltd. to increase its 3G business operating licenses based on the WCDMA technology. Technical standard 3G business operating license.
For operators, the issuance of 3G licenses means the beginning of a new round of market competition; for equipment manufacturers, this means that an investment pie of at least 280 billion yuan in three years is in front of them; For users, 3G means that mobile Internet bandwidth has soared and tariffs have dropped.