What is the concept of 100Mbps download speed? What is the concept of 50 times faster than the 3G network speed? What is the effect of being more flexible than the 3G communication method, the communication spectrum is wider, the communication quality is more efficient, and the communication cost is cheaper? This is LTE, this is 4G, the new generation of mobile communication technology that we are about to usher in. Well, the question is coming. What is LTE and 4G, how can I explain it? The term TD-LTE appears frequently in China. What does it stand for, and what is the connection between LTE-TDD and LTE-FDD? What are the progress and advantages of 4G? How much can the actual speed be washed? Is the tariff cheaper? What is a process from 1G to 4G? How is LTE evolved? Look at the following questions with your questions, you can find the answer, Xiaobian will try to use the popular narrative, I hope to help everyone read. About 4G and LTE Interpretation of the most suitable communication technology in China The purpose of writing this "literacy draft" About the Apple iPhone 5 supporting LTE, positioning the 2012 communication exhibition held by the new generation of mobile communication, speculating on the 4G licenses issued by the domestic market, as the fourth generation mobile communication standard (4G) that LTE has long entered the line of sight, It has become the focus of attention in the industry. The popularity of 3G has not worked well in China's special environment, which has also promoted the 4G process to a certain extent, making people look forward to the performance of 4G. Xiaobian non-fruit powder, not 3G users, mobile phones are still using China Mobile's 2G network. According to the user data released by China Unicom, the number of new 3G subscribers of Unicom in the first half of this year was 1.77 times that of last year, but the situation of new 2G subscribers is still not good. On the surface, the 3G situation is good, but in China, the proportion of 2G users is still larger than that of the emerging 3G. This at least illustrates a problem. Chinese users do not fully recognize 3G. In China, the phenomenon of economic polarization is obvious, and the tariff is still the most concerned factor for users. It is reported that 4G and fixed broadband networks are comparable in price, and the billing method is more flexible and flexible, users can determine the required services according to their own needs. In addition, 4G can be deployed where DSL and cable modems are not covered and then extended to the entire region. Obviously, 4G has the incomparable superiority of 3G and is a communication technology that is more adaptable to China's national conditions. China Mobile's 4G LTE experience event held in a shopping mall in Shenzhen Several key concepts · 4G, the next-generation mobile communication technology standard, and the implementation technology is called LTE. 4G is the abbreviation of the fourth generation mobile communication and its technology. It is a technology product that integrates 3G and WLAN and can transmit high-quality video images and image transmission quality is comparable to that of high-definition television. LTE, a new generation of mobile communication technology, LTE is actually 3.9G, not equal to 4G. However, it should be noted that without LTE evolution, there would be no so-called 4G. LTE (Long Term EvoluTIon, Long Term Evolution) can be seen literally as an evolution of 3G, starting with the 2004 3GPP Toronto Conference. The LTE 3.9G global standard improves and enhances 3G's air access technology, using OFDM and MIMO as the sole standard for its wireless network evolution. · TD-LTE, an upgraded version of China Mobile's TD-SCDMA, you can think of it as a TDD version of LTE. TD-LTE (TIme Division Long Term EvoluTIon) is a 4G standard jointly developed by Alcatel-Lucent, Nokia Siemens Networks, Datang Telecom, Huawei Technologies, ZTE Corporation, and China Mobile. LTE-TDD, one of the LTE duplex technologies, translated as TIme Division Duplexing. LTE-FDD, one of the LTE duplex technologies, translated as Frequency Division Duplexing. These concepts are confusing, but in fact they are closely related. You only need to understand the meaning of the culprits TD-LTE. Objectively speaking, we know that China Mobile's TD-SCDMA is not working well, so LTE-TDCDMA's LTE evolution has returned to LTE-TDD, and since TD-SCDMA itself is TDD technology, it is more reasonable to develop into LTE-TDD. In essence, you will find that TD-LTE is actually back to the WCDMA mainstream camp, so many insiders also believe that LTE is likely to complete technical unification.
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