LTE signal shielding method and system based on system information

A technology of signal shielding and system information, applied in the direction of communication interference, electrical components, etc., can solve the problems of increasing the difficulty and cost of suppressing system implementation, and achieve the effect of reducing implementation cost, simple implementation technology, and low interference

Inactive Publication Date: 2017-09-15
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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Problems solved by technology

Another disadvantage is that the counterfeit signal needs to be on the same time-frequency resource as the signal transmitted by the base station in the local suppression area, which requires the suppression system to analyze the information of the local base station, obtain the frame synchronization signal of the base station, and strictly synchronize with the local base station, which improves the Difficulty and cost of implementing suppression systems

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  • LTE signal shielding method and system based on system information

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[0026] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0027] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0028]LTE system information is divided into MasterInformationBlock (MIB) and multiple SystemInformationBlocks (SIBs). The MIB is transmitted on the broadcast channel PBCH, and it includes a limited number of the most important and commonly used transmission parameters, which are necessary parameters for obtaining other system information. What is carried in the SystemInformation (SI) message is the SIB, but does not include the SystemInformation BlockType1. The mapping from the SIB to the SI message...

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Abstract

The invention discloses an LTE signal shielding method and an LTE signal shielding system based on system information. The LTE signal shielding method specifically comprises the steps of: step (1) receiving LTE information of a working frequency point of an LTE base station in a target shielded region; step (2) acquiring physical layer identification information of an LTE cell under the working frequency point by utilizing the received LTE information; step (3) generating shielding signals according to the physical layer identification information of the LTE cell; step (4) and periodically transmitting the shielding signals. The LTE signal shielding method and the LTE signal shielding system can reduce interference on LTE base stations operating normally outside the target shielded region, effectively improve the LTE signal shielding efficiency of the shielding system, and reduce the realization difficulty and realization cost of LTE shielding signals.

Description

technical field [0001] The invention relates to the field of communication control, in particular to a system information-based LTE signal shielding method and system. Background technique [0002] With the continuous development of mobile communication technology, LTE (Long Term Evolution, also known as 4G) mobile phones are becoming more and more common. While LTE mobile phones bring convenience such as high bandwidth and high-speed downloads to people, they also bring Here comes some safety hazards. Mobile phone communication is carried out through wireless channels, and wireless channels are open, and some receiving devices can intercept the call information of mobile phones, and locate, track and monitor them. In some special occasions, such as confidential conference rooms, important national government or military departments and other special environments, in order to prevent leakage of mobile phone communication, it is not desirable to have a mobile phone for commu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04K3/00
CPCH04K3/825
Inventor 龙杰锋
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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