Method for transmitting satellite synchronization signal on extensive pico-site

Abstract

The embodiment of the invention provides a method for transmitting a satellite synchronization signal on an extensive pico-site. The method includes steps: a baseband unit receives the satellite synchronization signal, combines the synchronization signal with business data, and converts the synchronization signal to an optical signal to enable the optical signal to be transmitted in an optical fiber; an extension unit receives the optical signal and converts the optical signal to an electric signal to enable the electric signal to be transmitted in a twisted pair; and a radio remote unit receives the electric signal, separates and restores the satellite synchronization signal, and emits the satellite synchronization signal. According to the method for transmitting the satellite synchronization signal on the extensive pico-site, transmission links of the extensive pico-site are fully used so that repeated construction is avoided, the deployment invest is less, and the distribution is flexible; and the problem of restriction of the remote distance of the satellite synchronization signal is effectively solved.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular to a method for transmitting satellite synchronization signals on an extended pico base station. Background technique [0002] The extended pico base station is an indoor coverage solution actively promoted by mobile operators. According to different standards, it can realize distributed coverage of 2G, 3G, and 4G mobile communication signals. It separates the baseband unit and the remote radio unit, and adds an expansion unit in the middle to realize the flexible distribution and miniaturization of the remote radio unit. [0003] Satellite synchronization, such as GPS (Global Positioning System), Beidou, etc., is widely used in many fields. For application scenarios that require positioning, navigation, timing, and synchronization functions, satellite synchronization is the preferred solution. Satellite synchronization is the preferred solution f...

AI Technical Summary

Problems solved by technology

Both solutions have obvious limitations: (1) Due to the problem of signal attenuation in the feeder solution, the maximum remote distance does not exceed 100 meters. If the feeder room distribution system is considered for coverage, the actual remote distance will be shorter; (2) The distance of the twisted pair solution has been improved, but limited by power supply and twisted pair transmission distortion factors, it still cannot exceed 300 meters, and the decoded differential signal is transmitted, which can only be connected to one device for use, not Flexible for distributed coverage

Therefore, for many devices and terminals installed in large buildings, shopping malls, and tunnels that require satellite synchronization, it is very difficult to obtain synchronization signals

Images