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依据国际电联有关第三代公众移动通信系统（IMT-2000）频率划 分和技术标准,按照我国无线电频率划分规定,结合我国无线电频谱使 用的实际情况,现将我国第三代公众移动通信系统频率划分有关事宜通 知如下: 一、第三代公众移动通信系统的工作频段为: （一）主要工作频段:频分双工（FDD）方式:1920-1980MHz/2110-2170Hz;时分双工（TDD）方式:1880-1920MHz、2010-2025MHz。 （二）补充工作频率: 频分双工（FDD）方式:1755-1785MHz/1850-1880MHz; 时分双工（TDD）方式:2300-2400MHz,与无线电定位业务共用, 均为主要业务,共用标准另行制定。 （三）卫星移动通信系统工作频段:1980-2010MHz/2170-2200MHz。
According to the ITU third generation mobile communications system (IMT-2000) frequency allocation and technical standards, in accordance with the provisions of China’s radio frequency division, combined with the actual use of radio frequency spectrum in China, now the third generation of China’s public mobile communication system frequency The division of relevant matters notice as follows: First, the third generation of public mobile communications system operating frequency bands are: (a) the main operating band: Frequency Division Duplex (FDD) mode: 1920-1980MHz / 2110-2170Hz; Time Division Duplex (TDD) Method: 1880-1920MHz, 2010-2025MHz. (II) Supplementary working frequency: Frequency division duplexing (FDD): 1755-1785MHz / 1850-1880MHz; Time Division Duplexing (TDD): 2300-2400MHz, shared with radio positioning services, all of which are the main business, sharing standard separately Make. (C) satellite mobile communication system operating frequency band: 1980-2010MHz / 2170-2200MHz.