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Base station signal synchronization method, device, equipment and storage medium based on GPS signal

A technology for GPS signal and signal synchronization, applied in synchronization devices, measurement devices, wireless communication, etc., can solve problems such as affecting GPS synchronization performance and GPS signal weakening, avoiding GPS synchronization failure, high synchronization accuracy, and avoiding synchronization accuracy. low effect

Active Publication Date: 2021-08-31
深圳前海中电慧安科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TDD is a standard of LTE and belongs to time division multiplexing. In order to avoid interference between different cells, TDD cells in the same frequency band in the same area need to obtain timing synchronization. There are two synchronization methods currently used. One is air interface synchronization. , one is GPS synchronization, and the base station of the operator usually adopts the GPS synchronization method. Since the location where the base station is deployed may be blocked or rainy, the GPS signal will become weak or intermittent at this time. In this case, it will affect GPS synchronization performance, in order to solve this problem, an optimization algorithm for inertial correction is proposed, and finally achieve stable synchronization of GPS synchronization under weak signal

Method used

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  • Base station signal synchronization method, device, equipment and storage medium based on GPS signal
  • Base station signal synchronization method, device, equipment and storage medium based on GPS signal
  • Base station signal synchronization method, device, equipment and storage medium based on GPS signal

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Embodiment 1

[0034] see figure 1 , this embodiment provides a base station signal synchronization method based on GPS signals, which is applied to various time docking scenarios, and the method includes the following steps:

[0035] S110. Receive the GPS signal and confirm the missing time of the GPS signal.

[0036] Taking the time docking scenario where the base station equipment participates as an example, the base station supports time service through 1PPS (pulse per second) signals and data information, and the receiver replies with 1PPS time reference signals and data information from the received information to achieve time synchronization with the sender. When the GPS signal is weak, it is prone to loss. Considering that there are many kinds of signals in the transmission process, the 1PPS signal is used as the time reference signal. Once the synchronization is lost, it cannot be performed. Therefore, the 1PPS signal loss time is selected as the GPS signal loss time here.

[0037]...

Embodiment 2

[0066] Such as image 3 As shown, this embodiment provides a base station signal synchronization device 200 based on GPS signals, including:

[0067] The receiving module 210 receives the GPS signal and confirms the missing time of the GPS signal.

[0068] Specifically, the GPS signal includes the 1PPS signal, and the missing signal can be obtained by calculating the missing time of the 1PPS signal.

[0069] The first calculation module 220 is configured to calculate a frame offset adjustment value according to the GPS signal.

[0070] Specifically, in the time when the GPS signal is not missing, the GPS signal transmitted between the two synchronized devices can be used to determine whether they are synchronized. If not, the frame offset adjustment value can be calculated according to the GPS signal, and the frame offset adjustment value The timing of the corresponding devices can be adjusted to achieve synchronization.

[0071] The second calculation module 230 is configu...

Embodiment 3

[0091] Figure 5 A schematic structural diagram of a base station device 600 provided in Embodiment 3 of the present invention, as shown in Figure 5 As shown, this kind of base station equipment includes a memory 610 and a processor 620, and the number of processors 620 in the base station equipment may be one or more, Figure 5 Take a processor 620 as an example; the memory 610 and the processor 620 in the base station equipment can be connected through a bus or other methods, Figure 5 Take connection via bus as an example.

[0092] The memory 610, as a computer-readable storage medium, can be used to store software programs, computer-executable programs and modules, such as the program instructions / modules corresponding to the GPS signal-based base station signal synchronization method in the embodiment of the present invention (for example, GPS-based The receiving module 210, the first calculating module 220, the second calculating module 230, the judging module 240, th...

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Abstract

The embodiment of the invention discloses a GPS signal-based base station signal synchronization method, device, base station equipment and storage medium. The method includes: receiving a GPS signal and confirming the missing time of the GPS signal; calculating a frame offset adjustment value according to the GPS signal; calculating an adjustment average value and an average adjustment interval according to the frame offset adjustment value; judging whether the missing time is greater than a preset time threshold; If the time is less than or equal to the preset time threshold, the frame offset adjustment is performed according to the adjusted average value, the average adjustment interval, and the missing time; if the missing time is greater than the preset time threshold, the frame offset adjustment value is cyclically used for adjustment. The base station signal synchronization method based on the GPS signal provided by the present invention can perform GPS synchronization stably for a long time under a weak GPS signal, and has high synchronization precision.

Description

technical field [0001] The present invention relates to the field of base station communication, in particular to a GPS signal-based base station signal synchronization method, device, base station equipment and storage medium. Background technique [0002] With the rapid development of mobile communication technology, the replacement of communication equipment is changing with each passing day. Among them, LTE, as the wireless standard of 4G network, is a technology of time-sharing and long-term evolution. 50Mbps, in order to increase spectral efficiency and transmission rate, the LTE protocol introduces key technologies such as OFDM and MIMO, which largely meets people's growing demand for mobile data transmission rates. [0003] Therefore, as people use more and more 4G networks, and as the deployment of 4G LTE base stations becomes more and more dense, at the same time, the coverage areas between different base stations overlap and overlap, and the coverage between diffe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00G01S19/40
CPCG01S19/40H04W56/00
Inventor 阮水生李京王东锋邓惠华刘涛郭金铭文延东
Owner 深圳前海中电慧安科技有限公司
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