Base station positioning method based on high-precision time synchronization network

[0035] Example 1

[0036] Such as figure 1 As shown, this embodiment provides a base station positioning method based on a high-precision time synchronization network, including:

[0037] Obtain the absolute time or relative time difference of radio waves propagating between the terminal to be located and at least three base stations; obtain the spatial coordinate information of the base station in preset coordinates; calculate the terminal to be located and the base station according to the absolute time Calculate the relative distance difference between the terminal to be located and the base station according to the relative time difference; obtain the position of the terminal to be located according to the preset strategy according to the relative distance or the relative distance difference and the spatial coordinate information information.

[0038] Specific, such as figure 2 As shown, when the preset strategy is TOA (Time of Arrival Algorithm), the relative distance is usually

[0044] Example 2

[0045] This embodiment provides a high-precision time synchronization method for mobile communication base stations based on an optical fiber network. Specifically, such as Figure 4 As shown, GPS (Global Positioning System) is the United States Global Positioning System, PPS (Pulse Per Second) is a second pulse signal, and UTC (Coordinated Universal Time) is Coordinated Universal Time. Each base station constructs a tree topology network through optical fibers. The tree topology network includes root node clocks at all levels. The root node clock of each level serves as the master clock of the next level. The root node clock of each next level As the upper-level slave clock; adjust the time synchronization error between the slave clock and the master clock to achieve time synchronization between the slave clock and the master clock.

[0046] Further, in order to synchronize the network of each base station, the synchronization accuracy can reach sub-nanosecond leve