Interference signal avoiding method of wireless remote transmission multi-frequency point set copy system

A technology of jamming signals and wireless remote transmission, which is applied in the field of perception, detection and avoidance of jamming signals, can solve problems such as the inability to quantitatively evaluate the influence degree of real signals and noise signals, and improve communication efficiency and anti-interference ability of the same frequency. The method is unique, significant effect

Inactive Publication Date: 2013-11-06
沈阳圆方传感科技有限公司
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Problems solved by technology

It is impossible to quantitatively evaluate the impact of real signals and noise signals on the normal operation of the receiver, and can only provide a rough evaluation basis

Method used

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the examples.

[0018] Usually the interference signal of the multi-frequency centralized copying system is a wireless signal that is the same as or similar to the local carrier frequency f(s)i and mirror frequency f(m)i of the wireless communication module of each branch network concentrator, which can make the concentrator The wireless communication module resonates and cannot perform normal communication work. This method is to use the wireless communication modules of each concentrator to sense whether there is an interference signal in the detection space. At the same time, the test and evaluation mechanism of the advanced LQI link quality indicator of the wireless channel between the self-service network link nodes is cited as a method for judging the influence of co-channel interference signals on the reliable operation of the system.

[0019] The following further describes the ...

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Abstract

The invention relates to an interference signal sensing, detecting and avoiding method of a wireless remote transmission multi-frequency point set copy system. The method includes the following steps: (1) when a master station of the wireless remote transmission multi-frequency point set copy system sends data acquisition instructions to concentrators, concentrators of branch networks of a downlink channel are used for judging whether interference signals exist; (2) if the interference signals exist, the branch networks with the interference signals are used for judging whether the interference signals affect operation of the corresponding branch networks; if the operation of the corresponding branch networks is affected, the concentrators of the branch networks send delay information to the master station and wait; the master station calls the concentrators of the branch networks to perform data acquisition; the concentrators of the branch networks are used for judging whether the interference signals exist and whether the operation of the branch networks is affected again; if the interference signals exist and the operation of the branch networks is affected, and the step (2) is returned until the operation of the branch networks is not influenced. The method guarantees normal communication of the system, is unique, simple to operate and obvious in effect and greatly improves anti-same-frequency-interference capacity of the multi-frequency point set copy system.

Description

technical field [0001] The invention relates to a method for sensing, detecting and avoiding interference signals in a wireless remote multi-frequency point centralized copying system (hereinafter referred to as a multi-frequency point centralized copying system). Specifically, it is a method that can sense and detect the interference signal of the multi-frequency point centralized copying system, and can judge the influence degree of the interference signal on the reliable operation of the system and whether it affects the normal data collection work. Background technique [0002] With the wide application of information and wireless communication technologies in various fields, spectrum resources are becoming increasingly scarce. The same is true for the public frequency band 470-510Mhz of metering instruments. The problem of mutual interference between the same frequency is very prominent, which has always plagued the development of the wireless remote meter reading indus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H04W16/14H04W24/04H04W24/08H04B17/345
Inventor 黄汴荣胡文明刘春伟
Owner 沈阳圆方传感科技有限公司
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