There is a lot to learn. First of all, we should understand the communication principle and optical communication foundation, which are related to base station transmission. If you want to optimize the base station network, you must learn the principle of GSM or mobile communication, and debugging and installation are related to the above two aspects.

Huawei equipment doesn't know what you want to know. Anyway, it is widely used as transmission equipment. Specifically, it is photoelectric conversion equipment, which converts electrical signals from base stations into optical signals and transmits them to BSC in SDH network. This is more general. Now Huawei's SDH technology is very mature. If you want to know something else, you can first look at the principles of SDH, PON technology and the most advanced PTN technology on the Internet.