Method, device and system for clock synchronization between baseband units

Abstract

Disclosed is a method for clock synchronization among base band units (BBUs), comprising: a radio remote unit determines a clock source of a BBU among multiple BBUs connected to the radio remote unit as a main clock source, and the clock sources of the remaining BBUs as slave clock sources, wherein the remaining BBUs are the BBUs of the multiple BBUs except for said BBU; the radio remote unit obtains clock information of the main clock source; and the radio remote unit synchronizes the clock information of the slave clock sources according to the clock information of the main clock source. By means of the method for clock synchronization among BBUs provided by embodiments of the present invention, clock synchronization among BBUs can be implemented without adding any hardware, thereby reducing complexity of clock synchronization among BBUs and providing convenience.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device and system for clock synchronization between baseband units BBU. Background technique [0002] The base band unit (Base Band Unit, BBU) and the wireless remote unit (Radio Remote Unit, RRU) are the basic components of the base station. The BBU is usually placed in the equipment room, and the RRU can be installed on the floor. The connection between the BBU and the RRU is adopted, and the RRU then Connect to the antenna via coaxial cable and power splitter or coupler. [0003] With the development of the wireless communication industry, multi-standard communication will coexist in more and more scenarios. Then it is required that the wireless frame numbers output by BBUs of different standards are completely synchronized with the 10ms phase, that is, clock synchronization must be ensured to ensure the correctness of data processing. The wireless f...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem in the prior art that the difference in clocks between BBUs can only be realized by adding hardware, the embodiment of the present invention provides a method for clock synchronization between baseband units, which can be implemented without adding On the premise of hardware, the clock synchronization between BBUs is realized, thereby reducing the complexity of clock synchronization between BBUs and providing convenience

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