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Downlink pilot suppression method, device and jammer

A technology of interference sources and pilot signals, applied in the field of communication, can solve the problems of inability to effectively adapt to the external environment of spontaneous interference signals, waste of calculation, and complex design of correlators, and achieve the effect of inhibiting mobile phone users from accessing the TDS network

Active Publication Date: 2018-10-23
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0011] However, since the jammer design does not need to know the specific SYNC_DL code of the cell, using the sliding correlation method will cause too much computational waste, and the design of the correlator is complicated; while the existing characteristic window method cannot effectively adapt to Interference of spontaneous jamming signals and complex external environment

Method used

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  • Downlink pilot suppression method, device and jammer
  • Downlink pilot suppression method, device and jammer

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Embodiment Construction

[0052]The solution of the embodiment of the present invention is mainly: based on the power characteristic window method to detect the air interface pilot signal, combined with dynamic gain control technology, and anti-self-jamming optimization, so that the jammer can effectively adapt to the interference of spontaneous jamming signals and the complex external environment, Stably lock the pilot signal of the cell, and effectively suppress the mobile phone users within the interference range from accessing the TDS network.

[0053] Such as figure 2 As shown, an embodiment of the present invention proposes a downlink pilot suppression method, including:

[0054] Step S101, search for the air interface pilot signal, and search for the location of the downlink DWPTS of the cell according to the air interface pilot signal and based on the power characteristic window method;

[0055] As mentioned above, when searching for the location of Dwpts, the current common practice is to se...

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Abstract

A downlink pilot suppression method and apparatus, and a jammer. The method comprises: searching for an air interface pilot signal, and searching for the position of a DWPTS of a cell according to the air interface pilot signal and a power characteristic window method; when the position of the DWPTS of the cell is found, generating an interference source; and sending an interference signal to an air interface at the position of the DWPTS of the cell according to the interference source and an automatic gain control technology, so as to superimpose the interference signal and the air interface pilot signal and then conduct air interface transmission, and prevent a mobile phone and other mobile terminals from finding an air interface pilot signal. By means of the technical scheme, a jammer can be effectively adapted to interference of a self-interference signal and a complex external environment, can stably lock a pilot signal of a cell, and can effectively suppress a mobile phone user in an interference range to access a TDS network.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a TD-SCDMA (TDS, Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access) downlink pilot suppression method, device and jammer. Background technique [0002] At present, the TD-SCDMA wireless network has a large-scale coverage in China, and in some application scenarios, it is necessary to prevent users in a certain area from accessing the 3G network. In order to prevent mobile phone users from accessing the base station, it is first necessary to understand the cell search process of the mobile phone. The process from starting the mobile phone to searching and logging in to a suitable cell is defined as cell search. After the mobile phone is turned on, the TD-SCDMA cell search process can be roughly divided into the following steps: [0003] (1) Search for the position of DwPTS (Downlink Pilot Time Slot, dow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/16
CPCH04W48/16
Inventor 胡文彬
Owner ZTE CORP
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