Broadband wireless access frequency.
my country currently divides four frequency bands for broadband wireless access applications, namely 2.4GHz, 3.5GHz, 5.8GHz, and 26GHz.
The 2.4GHz frequency band is license-free and can be used without disturbing other systems without applying for a frequency. The frequency range of this band is 2400MHz ~ 2483.5MHz. It requires the use of time division duplex TDD mode, and the maximum radiated power must not exceed 100mW. In this frequency band, our country actively encourages the application of WLAN802.11b. At the same time, industrial, scientific, and medical equipment also use this frequency band to realize the wide application of frequency.
The frequency range of the 5.8GHz band is 5725MHz~5850MHz. It adopts time division duplex TDD mode. The maximum radiation power must not exceed 500mW. The base station needs to obtain a radio transmission license. In this frequency band, our country actively encourages the application of WLAN802.11a, but currently there are relatively few applications of this technology. This frequency band is mainly used by basic telecommunications operators.
The main frequency range of the 3.5GHz (MMDS) band is 3400MHz~3430MHz/3500MHz~3530MHz. The main working method is FDD frequency division duplex. For the first time, my country has adopted the selection and bidding method to allocate frequencies in this frequency band. At present, Applied in more than 30 cities. Due to frequency resource limitations, development is relatively slow. This frequency band is also mainly used by basic telecommunications operators to establish broadband wireless access networks.
The frequency range of the 26GHz (LMDS) band is 24.507GHz~25.515GHz/25.757GHz~26.765GHz. The main working mode is FDD frequency division duplex. This frequency band is also mainly used by basic telecommunications operators. To establish broadband wireless access network. Due to some reasons of the technology itself, lack of urgent market demand, and expensive equipment, it is not currently used very well.