Mobile communication base station high-precision time synchronization method based on optical fiber network
A mobile communication base station and time synchronization technology, applied in wireless communication, synchronization devices, electrical components, etc., can solve problems such as limited time synchronization accuracy
Pending Publication Date: 2019-09-10
合肥更鼓电子科技有限公司
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[0015] Aiming at the problem of limited accuracy of existing time synchronization, the present invention provides a high-precision time synchronization method for mobile communication base stations based on optical fiber network
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[0042] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0043] figure 1 A kind of embodiment of the high-precision time synchronization method for mobile communication base stations based on optical fiber network provided by the present invention, wherein, GPS (Global Positioning System) is the global positioning system of the United States, PPS (Pulse PerSecond) is the second pulse signal, UTC (Coordinated Universal Time) is the Coordinated Universal Time, and the optical fiber network-based mobile communication base station high-precision time synchronization method in this embodiment may include:
[0044] Construct a tree topology network based on optical fiber, in which the root node clock of each level is used as the master cloc...
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The invention discloses a mobile communication base station high-precision time synchronization method based on an optical fiber network, and belongs to the field of mobile communication. The method comprises the steps that a tree topology structure network is constructed based on optical fibers, a root node clock of each level serves as a master clock of the next level, and a root node clock of each next level serves as a slave clock of the previous level; the time synchronization error of the slave clock and the master clock is adjusted to realize the time synchronization of the slave clockand the master clock; and the clock jitter of the master clock and the slave clock of the tree topology structure network are controlled. According to the tree topology structure network constructed based on the optical fibers, the whole network is of a master-slave structure, synchronization is achieved only in two adjacent stages, namely, an end-to-end manner, synchronization time node equipmentis deployed in a mobile communication base station, synchronization of base station networking can be achieved through optical fiber connection, and the synchronization precision can reach the sub-nanosecond stage.
Description
technical field [0001] The invention belongs to the field of mobile communication, and in particular relates to a high-precision time synchronization method for a mobile communication base station based on an optical fiber network. Background technique [0002] Time synchronization is one of the core technical indicators in the mobile communication network. The establishment of time synchronization between mobile communication base stations is not only a requirement for carrying network services to ensure smooth data transmission and processing, but also a key indicator that affects the success rate of handover of mobile devices between base stations. Moreover, time synchronization can effectively improve the wireless space spectrum. utilization rate. Therefore, during the evolution of mobile communication technology, time synchronization becomes a development trend of future wireless systems. [0003] With the introduction of 5G technology, future mobile communication net...
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Login to View More IPC IPC(8): H04W24/04H04W56/00
CPCH04W56/0015H04W56/003H04W24/04
Inventor 李帅郑凯郭开城杨千惠
Owner 合肥更鼓电子科技有限公司