What does 4g lte network mean?

4g lte network is the collective name for LTE network standards such as [TD-LTE] and [FDD-LTE]. The maximum data transmission rate of 4G LTE exceeds 100Mbps, which is 10,000 times the data transmission rate of mobile phones. , which is also 50 times the speed of 3G mobile phones.

#The operating environment of this article: Windows 7 system, Dell G3 computer.

What is 4G LTE

4G LTE is the collective name for LTE network standards such as TD-LTE and FDD-LTE. China's 4G network is still in the special period of TD-LTE, and 4G LTE generally refers to the TD-LTE standard network. LTE is the abbreviation of English Long Term Evolution. LTE, also commonly known as 3.9G, has a 100Mbps data download capability and is regarded as the mainstream technology evolving from 3G to 4G.

The maximum data transmission rate of 4G LTE exceeds 100Mbps, which is 10,000 times the data transmission rate of mobile phones and 50 times the speed of 3G mobile phones. 4G mobile phones can provide high-performance streaming media content and become personal identification devices through ID applications. It can also accept high-resolution movies and TV shows, becoming a link in a new infrastructure merging broadcast and communications.

LTE

4G LTE communication technology does not break away from previous communication technologies, but is based on traditional communication technologies and uses some new communication technologies to continuously improve the network efficiency of wireless communications. and function. If 3G can provide people with a high-speed wireless communication environment, then 4G LTE communication will be an ultra-high-speed wireless network, an information super highway that does not require cables. This new network allows phone users to wirelessly and three-dimensional space virtual reality connection.

Advantages of 4G LTE

1: Fast communication speed

Since the original purpose of people studying 4G communication is to improve cellular The most impressive feature of 4G communications is that it has faster wireless communication speeds as phones and other mobile devices wirelessly access the Internet.

Comparing the data transmission rate of mobile communication systems, the first generation analog only provides voice services; the transmission rate of the second generation digital mobile communication system is only 9.6Kbps, and can reach up to 32Kbps, such as PHS; The data transmission rate of the third-generation mobile communication system can reach 2Mbps; the transmission rate of the fourth-generation mobile communication system can reach 20Mbps, or even up to 100Mbps. This speed will be equivalent to about 10,000 times the transmission speed of the latest mobile phones in 2009. , 50 times the transmission speed of third-generation mobile phones.

　2: Wide network spectrum

In order to achieve 100Mbps transmission of 4G communications, communications operators must carry out substantial transformations based on the 3G communications network. and research to make the communication bandwidth of 4G network much higher than the bandwidth of cellular system of 3G network. According to AT&T executives who have studied 4G communications, it is estimated that each 4G channel will occupy 100MHz of spectrum, which is equivalent to 20 times that of the W-CDMA 3G network.

　3: Flexible communication

Strictly speaking, the functions of 4G mobile phones can no longer be simply classified into the category of "telephone". After all, the transmission of voice data It is just one of the functions of 4G mobile phones. Therefore, in the future, 4G mobile phones should be regarded as small computers. Moreover, 4G mobile phones will have even more amazing breakthroughs in appearance and style. People can imagine that glasses and watches , cosmetic cases, travel shoes, based on the premise of convenience and individuality, any item that can be seen may become a 4G terminal, but people still don’t know what to call it.

The future 4G communication will allow people not only to communicate anytime and anywhere, but also to download and transfer information, pictures, and videos in both directions. Of course, they can also play online games with strangers they have never met. There may be the worry of being permanently locked by the online positioning system with nowhere to hide, but compared with the convenience and security brought by the map it provides, this is simply negligible.

　4: High intelligent performance

The fourth generation of mobile communications is more intelligent, which is not only reflected in the intelligent design and operation of 4G communication terminal equipment, but also For example, the reliance on menus and scrolling operations will be greatly reduced. More importantly, 4G mobile phones can realize many unimaginable functions.

For example, a 4G mobile phone can promptly remind the owner of the mobile phone what to do or what not to do at this time based on the environment, time and other set factors. A 4G mobile phone can directly store box office information of a movie theater. Downloaded to a PDA, these information can clearly display the ticket sales and seat conditions. Everyone can use this information to purchase movie tickets that they are satisfied with online; a 4G mobile phone can be regarded as a portable TV. Watch various live broadcasts such as sports games.

　5: Good compatibility

To make 4G communication accepted by people as soon as possible, not only its powerful functions should be taken into consideration, but also the advantages of existing communications should be taken into consideration. foundation so that more existing communication users can easily transition to 4G communications with minimal investment.

Therefore, from this perspective, the future fourth-generation mobile communication system should have the characteristics of global roaming, open interfaces, interconnection with multiple networks, diversified terminals, and smooth transition from the second generation. .

　6: Providing value-added services

4G communications did not evolve from a simple upgrade based on 3G communications. Their core construction technologies are fundamentally different. 3G Mobile communication systems mainly use CDMA as the core technology, while 4G mobile communication system technology attracts the most attention with orthogonal multitasking frequency division technology (OFDM). Using this technology, people can realize wireless area loop (WLL), digital Wireless communication proliferation services such as audio broadcasting (DAB); however, considering the transitional nature of 3G communications, the fourth generation mobile communication system will not only use OFDM technology in the future, and CDMA technology will be used in the fourth generation mobile communication In the system, it cooperates with OFDM technology to play a greater role. Even the fourth generation mobile communication system in the future will have new integrated technologies such as OFDM/CDMA. The digital audio broadcast mentioned above is actually the real The technology used is the integration technology of OFDM/FDMA, which also uses a combination of the two technologies.

Therefore, the fourth-generation mobile communication system with OFDM as the core technology in the future will also combine the advantages of the two technologies, and part of it will be an extension of CDMA.

　7: High-quality communication

Although the third generation mobile communication system can also realize various multimedia communications, the future fourth generation mobile communication system is also called For "multimedia mobile communications.

The fourth generation of mobile communications is not only to respond to the increase in the number of users, but more importantly, it must respond to multimedia transmission needs, and of course communication quality requirements. To summarize Said, first of all, it must be able to accommodate the huge number of users in the market, improve the existing poor communication quality, and meet the requirements of high-speed data transmission.

　8: High frequency efficiency

Compared with the third generation mobile communication technology, the fourth generation mobile communication technology uses and introduces many powerful breakthrough technologies in the development process. For example, some optical fiber communication product companies have introduced It uses switching layer technology, which can cover different types of communication interfaces at the same time. In other words, the fourth generation mainly uses routing technology (Routing) as the main network architecture.

Due to the use of several different technology, so the use of wireless frequencies is much more efficient than second- and third-generation systems.

According to the most optimistic estimates, this effectiveness allows more people to use the same number of wireless Spectrum does more things, and does them quite quickly. Researchers say download speeds of 5Mbps to 10Mbps are possible.

　9: It’s cheap

Because 4G communication not only solves the compatibility problem with 3G communication, allowing more existing communication users to easily upgrade to 4G communication, but also introduces many cutting-edge communication technologies, which ensure that 4G communication can It provides a very flexible system operation method, so compared with other technologies, 4G communication is much easier and faster to deploy; at the same time, when building 4G communication network systems, communication operators will consider directly installing the 3G communication network On top of the infrastructure, a gradual introduction method is adopted, which can effectively reduce the costs for operators and users. According to researchers, some services such as wireless instant connections of 4G communications will be cheaper than 3G communications.

For people, the future 4G communication does seem very mysterious. Many people think that the fourth-generation wireless communication network system is the most complex technical system ever invented by mankind. Indeed, the fourth-generation wireless communication network is It probably won’t surprise people at all that a large number of technical problems have caused headaches during the implementation process. Most of the technical problems in the fourth generation wireless communication network are related to the Internet, and it will take several years to solve them. .

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