The previous article introduced the basic knowledge of 4G and some main parameters. This article will introduce operators in different countries around the world and their corresponding frequency bands.
Two points of knowledge are highlighted here. First, for manufacturers of 4G IPC in overseas markets (of course not limited to IPC products), these operators are the best and largest potential customers; 4G IPC products are sold in the corresponding country, and whether the equipment provided by the supplier can be used can be known by comparing whether the frequency band supported by the 4G module supports the Band frequency band of the corresponding country.
Therefore, what this article provides is more of a knowledge base. You don’t need to memorize it by rote. You can just save it and check it when you use it. It is recommended to save the article for emergencies.
The above table only lists the operators and frequency bands of some major countries. Of course, the operators in these countries are far more than those listed. If you want to know more about the operators, you can check through some websites.
To sum up and understand simply, B33 and above are mainly TDD standard (time division multiplexing), and the following is FDD standard (frequency division multiplexing); the other is that the frequency bands used by different countries can refer to the above table, or can be confirmed through some large areas , such as European version, American version, etc., you can check whether the corresponding country supports it on the official website of the module manufacturer, because the general baseband chip can cover the frequency bands of multiple countries at the same time.
Whether it is a 4G module factory or a finished product factory, they are actually the porters of the baseband chip company. The core technology and capabilities are controlled by the original chip factory. There are only a handful of manufacturers in the world that can make 4G/5G chips. In an article, we will focus on talking about the world's original baseband chip manufacturers.
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In the near future, I will use my spare time to do some product reviews (mainly consumer products). If you think your product has a special selling point, you can private message me.
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