Method and device for controlling wireless communication range

Abstract

The invention discloses a method and device for controlling a wireless communication range. A basic control unit comprises directional antennae 103 and 105, detection modules 104 and 106, and a CPU (Central Processing Unit) 101, wherein maximum directions of the directional antennae 103 and 105 are installed at a certain included angle according to a range to be controlled, the directional antenna 104 is connected with the directional antenna 103, the directional antenna detects a receiving signal intensity of the directional antenna 103 and sends the receiving signal intensity to the CPU101, the detection module 106 is connected with the detection module 105, the detection module 106 detects a receiving signal intensity of the detection module 105 and sends the receiving signal intensity to the CPU101, a threshold M of a difference D of the receiving signal intensities of the direction antennae is set in the CPU101, through setting the condition that the D is more than M, or less than M or equal to the M as a criterion of the generation of the communication, the wireless communication is controlled in the controlled range, outside the controlled range or at the boundary of the controlled range, and through regulating M, the controlled range can be regulated. The method and the device are simple to implement and low in cost and have generality.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a comprehensive design method for radio frequency circuits and antennas in applications that need to control the range of wireless communication in a certain area, and in particular provides a method that can control the range of wireless communication only by relying on the radio frequency circuit and the antenna itself The general method can be used in all wireless communication practices that use electromagnetic field communication and need to control the communication range at the same time. Background technique [0002] As radio frequency identification (RFID), near field communication (NFC) and other wireless communication technologies gradually enter people's lives, more and more businesses can be completed by swiping cards. While enjoying the convenience brought by new technologies, people are also worried about the potential risks brought by wireless com...

AI Technical Summary

Problems solved by technology

This method relies too much on the specific hardware, and the operation is cumbersome. The manufacturer of the SIM card needs to do a lot of testing work; a large number of radio frequency parameters need to be stored in the SIM card, which wastes storage space; the maintenance cost is also relatively high. When a new mobile terminal appears When the time comes, it is necessary to go to the designated place to recalibrate the radio frequency parameters; users need to participate too much in the implementation of the technology itself, the user experience is relatively poor, and it is difficult to promote; for mobile terminals that do not use SIM cards, this method is useless because of the loss of key components. fail

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