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Satellite timing method and device in mobile communication system

A mobile communication system and satellite timing technology, which is applied in the field of satellite timing methods and devices, can solve problems such as easy interruption of timing and low ability to suppress ground interference, and achieve the effect of avoiding interruption of timing

Active Publication Date: 2013-07-10
CHINA MOBILE GROUP JIANGSU
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  • Abstract
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Problems solved by technology

Therefore, when the GPS omnidirectional antenna is used to receive satellite signals, the interference signal from the ground is also received by the GPS omnidirectional antenna at the same time. Since the gain of the GPS omnidirectional antenna in the direction of the satellite signal and the direction of ground interference is not much different, the ability to suppress ground interference Small, so ground co-channel interference is easy to interrupt timing

Method used

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  • Satellite timing method and device in mobile communication system
  • Satellite timing method and device in mobile communication system
  • Satellite timing method and device in mobile communication system

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Embodiment Construction

[0025] figure 2 It is the satellite timing method in the mobile communication system provided by the invention.

[0026] Such as figure 2 As shown, the method includes:

[0027] Step 201, using a directional receiving antenna and its receiving channel to acquire satellite signals.

[0028] Step 202, perform timing according to the satellite signal.

[0029] The directional receiving antenna only has a large gain in a specific direction, while the gain in other directions is small. For details, please refer to image 3 .

[0030] image 3 is the typical gain-normalized pattern of the GPS directional receiving antenna at different elevation angles.

[0031] image 3 Among them, the GPS directional receiving antenna is a helical antenna, the gain of the beam center is greater than 8dBi, the 3dB width is about 60 degrees, and the gain in the direction of the elevation angle is lower than 10 degrees is at least 23dB lower than the beam center.

[0032] By directing the be...

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Abstract

The embodiment of the invention discloses a satellite time service method and device in a mobile communication system, wherein the method comprises the steps of: acquiring satellite signals by utilizing a directional receiving antenna and a receiving channel thereof, and carrying out time service according to the satellite signals. The device comprises a directional receiving antenna, a first receiving channel and a time service module; the directional receiving antenna is used for acquiring the satellite signals, and sending the acquired satellite signals to the time service module through the first receiving channel; and the time service module is used for carrying out time service according to the satellite signals. By applying the satellite time service method and device in the mobilecommunication system provided by the invention, the time service suspending of ground co-channel interference can be prevented.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a satellite timing service method and device in a mobile communication system. Background technique [0002] At present, many mobile communication systems use a satellite timing method for system timing, that is, a Global Positioning System (Global Positioning System, GPS) for system timing. [0003] Specifically, a GPS active antenna is installed outdoors, and a GPS timing module is installed in the ICU of the base station. The GPS active antenna receives satellite signals from different directions, amplifies the satellite signals through a low-noise amplifier (LAN) and sends them to the GPS Timing module, the GPS timing module uses the received satellite signal to time the base station. [0004] The GPS active antenna is composed of a GPS omnidirectional receiving antenna and a low noise amplifier. The GPS omnidirectional receiving antenna has a very wide beam and can receive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G04R20/04
Inventor 耿瑄于明金泓曹基荣傅思宁
Owner CHINA MOBILE GROUP JIANGSU
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