What is the difference between LTE and TD in the domestic development of TD LTE? What is the differe

Answer]: 1. The network architecture is different, LTE does not have a base station controller, that is, BSC in 2G and RNC in 3G;

2. TD uses TD-SCDMA, and LTE uses OFDM technology.

3. TD has CS and PS domains, LTE only has PS domains;

4. The frame structure is not the same;

It can be said that because the TD-LTE solution was first proposed by China's Datang Mobile and other domestic manufacturers.

TD-LTE contains a large number of Chinese patents, is led by China, and has received extensive international support and has become an international standard.

Selling dog meat on the head of a sheep, In addition to the time slot structure is similar to TDSCDMA, most of the core patents are foreign, and there are many patents of Huawei ZTE Datang, but many junk patents.

Don't be fooled by the Datang gang. The people of Datang and Wang Jianzhou like to say that TD LTE and TDSCDMA are in the same vein, and they are a fart.

Yes"China-led"That's right, because it is mainly promoted by China Mobile, the world's largest operator.

You can understand it this way, China dominated this technology, and now only China uses this technology.

The frequency use advantage of TD-LTE is very clear, which is an access result of the performance of the uplink system of the source TD-LTE, and under certain conditions, the average throughput of the cell and the throughput of the user can reach a relatively high level. Again, the downside has reached a very high level. It is important that in order to carry out VoIP business in the future, it can reach 300M.

To sum up, TD-LTE believes that it has the following unique advantages, so that TD-LTE and mainstream technology to maintain a coordinated development, this development is completely synchronized, so that the whole of China's TD-SCDMA to maintain an international development status. There is also the sharing of the achievements of the entire LTE industry chain, including one achievement of terminal and system development. In the standardization organization, there is only one TD-LTE left, and with the improvement of our industrial chain, it is conducive to promoting TD-LTE to the international as a whole.

In terms of technical experiments, considering the application of mobile communication broadband technology, LTE is actually the best technology in the evaluation of NGMA.

TD-LTE: The advanced global standard.

What is the difference between TD LTE and LTE TDD, and what is the connection between TD LTE and LTE FDD? What is the principle of TD LTE and LTE FDD dual-mode chips?

-TDD is the separation of the uplink signal and the downlink signal by time, to put it bluntly, the signal in a certain millisecond is either uplink or downlink, so that there will be no interference.

FDD is that the uplink and downlink signals are separated by frequencies, and the signals in a certain millisecond have both uplink and downlink, but they are located at different frequencies, so they do not interfere.

Since the difference between FDD TDD and TDD is only to distinguish the uplink and downlink low-level signals by time or frequency, in addition to the transmitter and receiver of the lowest physical layer, the design of the upper layer can maintain 99% reuse, and the dual-mode chip is made by this principle.

- Generally speaking, the TDD control function is the function of the control plane, that is, the control function of the mobile phone to start, move, call and so on;

The same thing.

TDD is Time Division Duplex.

FDD is Frequency Division Duplex.

The difference between the two LTE modes is not really large, and dual-mode is not difficult.

The second question doesn't understand what it means.