CN102904664A - Anti-interference communication system and anti-interference method - Google Patents
Anti-interference communication system and anti-interference method Download PDFInfo
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Abstract
The invention provides an anti-interference communication system which comprises a first radio frequency device and a second radio frequency device. The first radio frequency device is used for generating a first random code and transmitting the same to the second radio frequency device via a low-frequency magnetic signal channel; and the first random code is subjected to irreversible conversion to generate first radio frequency channel information used for radio frequency communication. The second radio frequency device is used for generating a second random code; a first radio communication channel is established by the first radio frequency device and the second radio frequency device according to the first radio frequency channel information, the second random code is transmitted to the first radio frequency device; and the second random code is subjected to irreversible conversion to generate second radio frequency channel information used for the radio frequency communication. A second radio frequency communication channel is established for communication by the first radio frequency device and the second radio frequency device according to the second radio frequency channel information. In addition, the invention further provides an anti-interference method. The technical scheme includes that anti-interference capability of a communication system is improved via switching to different radio frequency communication channels during communication.
Description
Technical field
The present invention relates to a kind of jam-resistant communication system and anti-interference method.
Background technology
Along with popularizing of portable terminal, it is very urgent that the demand of utilizing portable terminal to pay by mails becomes.At present, multiple implementation is arranged in the prior art, wherein a kind of scheme is by integrated 2.4G radio-frequency communication module in SIM cards of mobile phones or SD card, realizes communication transaction by magnetic coupling coil and magnetic induction processing module.This scheme detects the magnetic channel information of magnetic coupling signal strength signal intensity and reception by being contained in SIM card in the mobile phone or SD card, the 2.4G radio-frequency communication module that activates on SIM card or the SD card is carried out data trade communication.Because the energy of magnetic coupling signal is decayed with distance 3 powers in the space, and has extraordinary mobile phone consistency, so this scheme is when having realized the exchange of radio frequency high-speed data, can well control the distance of SIM card on the various mobile phone terminals or SD card RF data communications, thereby become a kind of reliable electronic payment of mobile terminal solution.
Summary of the invention
The present invention utilizes magnetic transmission near distance, is difficult for being listened, having the characteristics of good channel safety, by magnetic transmission running parameter, realizes communication system and anti-interference method that antijamming capability of the present invention is strong.
As the one side of technical solution of the present invention, a kind of jam-resistant communication system is provided, this system comprises the first radio-frequency unit and the second radio-frequency unit,
Described the first radio-frequency unit is for generation of the first random code; Described the first radio-frequency unit is sent to described the second radio-frequency unit by the low-frequency magnetic signalling channel with described the first random code; Described the first radio-frequency unit and described the second radio-frequency unit carry out irreversible transformation to described the first random code respectively, generate the first radio-frequency channel information that is used for radio communication;
Described the second radio-frequency unit is for generation of the second random code; Described the first radio-frequency unit and described the second radio-frequency unit are set up the first radio communication passage according to described the first radio-frequency channel information, and described the second radio-frequency unit is sent to described the first radio-frequency unit with described the second random code; Described the first radio-frequency unit and described the second radio-frequency unit carry out irreversible transformation to described the second random code respectively, generate the second radio-frequency channel information that is used for radio communication;
Described the first radio-frequency unit and described the second radio-frequency unit are set up the second radio communication passage according to described the second radio-frequency channel information, carry out radio communication.
Further, described the first radio-frequency unit comprises first signal processor, the first radio frequency signal transceiving module, the first radio-frequency antenna, magnetic signal generation module;
Described first signal processor links to each other with described magnetic signal generation module with described the first radio frequency signal transceiving module respectively; Described the first radio frequency signal transceiving module also links to each other with described the first radio-frequency antenna;
Described magnetic signal generation module is used for receiving described the first random code that described first signal processor produces, and is emitted to described the second radio-frequency unit;
Described first signal processor is used for described the first random code is carried out irreversible transformation, generates described the first radio-frequency channel information; And control described the first radio frequency signal transceiving module and described the first radio-frequency antenna is set up described the first radio communication passage according to described the first radio-frequency channel information and described the second radio-frequency unit;
Described the first radio frequency signal transceiving module and described the first radio-frequency antenna also are used for receiving described the second random code that described the second radio-frequency unit sends, and are sent to described first signal processor; Carry out irreversible transformation by described first signal processor, generate described the second radio-frequency channel information.
Further, described the second radio-frequency unit comprise secondary signal processor, the second radio frequency signal transceiving module, the second radio-frequency antenna, apart from control module;
Described secondary signal processor links to each other apart from control module with described with described the second radio frequency signal transceiving module respectively; Described the second radio frequency signal transceiving module also links to each other with described the second radio-frequency antenna;
Described apart from control module, be used for judging the communication distance between this second radio-frequency unit and described the first radio-frequency unit; And in described the first random code that described the first radio-frequency unit of the interior reception of legitimate correspondence distance sends, be sent to described secondary signal processor and carry out irreversible transformation, generate described the first radio-frequency channel information;
Described secondary signal processor, for generation of described the second random code, and control described the second radio frequency signal transceiving module and described the second radio-frequency antenna is set up described the first radio communication passage according to described the first radio-frequency channel information and described the first radio-frequency unit, described the second random code is sent to described the first radio-frequency unit;
Described secondary signal processor also is used for described the second random code is carried out irreversible transformation, generates described the second radio-frequency channel information.
Further, preserve magnetic signal intensity preset value in the described secondary signal processor, described secondary signal processor is sent to described magnetic signal intensity preset value described apart from control module, judges that apart from control module described the second radio-frequency unit and the first radio-frequency unit are whether in the legitimate correspondence distance by described.
Further, if the signal strength signal intensity that described the first radio-frequency unit sends described the first random code is not less than described magnetic signal intensity preset value, then describedly judge that apart from control module described the second radio-frequency unit and described the first radio-frequency unit are in the legitimate correspondence distance.
Further, described the first radio-frequency channel information comprises frequency and mailing address; Described the second radio-frequency channel information comprises frequency and mailing address.
As technical solution of the present invention on the other hand, provide a kind of anti-interference method of communication system, concrete steps are as follows:
The first radio-frequency unit produces the first random code, and is sent to the second radio-frequency unit by the low-frequency magnetic signalling channel;
Described the first radio-frequency unit and described the second radio-frequency unit carry out irreversible transformation to described the first random code respectively, generate the first radio-frequency channel information;
Described the second radio-frequency unit produces the second random code; Described the first radio-frequency unit and described the second radio-frequency unit are set up the first radio communication passage according to described the first radio-frequency channel information, and described the second radio-frequency unit is sent to described the first radio-frequency unit with described the second random code;
Described the first radio-frequency unit and described the second radio-frequency unit carry out irreversible transformation to described the second random code respectively, generate the second radio-frequency channel information;
Described the first radio-frequency unit and described the second radio-frequency unit are set up the second radio communication passage according to described the second radio-frequency channel information, carry out radio communication.
Further, the anti-interference method of communication system of the present invention is specific as follows:
First signal processor in described the first radio-frequency unit produces the first random code, and is emitted to described the second radio-frequency unit by the magnetic signal generation module in described the first radio-frequency unit;
What described the second radio-frequency unit was interior receives described the first random code apart from control module, and is sent to the secondary signal processor in described the second radio-frequency unit;
Described first signal processor and described secondary signal processor carry out irreversible transformation to described the first random code respectively, generate the first radio-frequency channel information;
Described secondary signal processor produces the second random code; Described the first radio-frequency unit and described the second radio-frequency unit are set up the first radio communication passage according to described the first radio-frequency channel information; Described the second radio-frequency unit is sent to described the first radio-frequency unit by the second radio frequency signal transceiving module and second radio-frequency antenna of its inside with described the second random code;
The first radio frequency signal transceiving module and the first radio-frequency antenna in described the first radio-frequency unit receive described the second random code, and are sent to described first signal processor;
Described first signal processor and described secondary signal processor carry out irreversible transformation to described the second random code respectively, generate the second radio-frequency channel information;
Described the first radio-frequency unit and described the second radio-frequency unit are set up the second radio communication passage according to described the second radio-frequency channel information, carry out radio communication.
Further, described the first radio-frequency channel information comprises frequency and mailing address; Described the second radio-frequency channel information comprises frequency and mailing address.
Further, described the first radio-frequency unit is set up radio communication passage according to the frequency of each self-generating with mailing address with described the second radio-frequency unit: if the frequency of the two conforms to mailing address, then the two sets up communication in this radio communication passage; Otherwise forbid this communication behavior.
The invention has the beneficial effects as follows:
The present invention utilizes magnetic transmission near distance, is difficult for being listened, having the characteristics of good channel safety, by magnetic transmission the first random code, the first random code is carried out frequency and the mailing address information that irreversible transformation obtains carrying out radio communication, and then set up the passage of article one radio communication.For the anti-interference of communication system of the present invention is provided, also the second random code is carried out frequency and the mailing address information that irreversible transformation obtains another group radio communication, set up the passage of second radio communication.Like this, by in communication process, switching the mode of different radio frequency communication port, reach the purpose that improves the anti-interference of communication system ability.
Description of drawings
Fig. 1 is the formation schematic diagram of jam-resistant communication system of the present invention;
Fig. 2 is the schematic flow sheet of the anti-interference method of communication system of the present invention.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention and feature are described, institute gives an actual example and only is used for explaining the present invention, is not be used to limiting scope of the present invention.
As the one side of technical solution of the present invention, a kind of jam-resistant communication system is provided, referring to Fig. 1, this system comprises the first radio-frequency unit 1 and the second radio-frequency unit 2.Wherein, the first radio-frequency unit 1 is for generation of the first random code; The first radio-frequency unit 1 is sent to the second radio-frequency unit 2 by the low-frequency magnetic signalling channel with the first random code; The first radio-frequency unit 1 and the second radio-frequency unit 2 carry out irreversible transformation to the first random code respectively, generate the first radio-frequency channel information that is used for radio communication.The second radio-frequency unit 2 is for generation of the second random code; The first radio-frequency unit 1 and the second radio-frequency unit 2 are set up the first radio communication passage according to the first radio-frequency channel information, and the second radio-frequency unit 2 is sent to the first radio-frequency unit 1 with the second random code; The first radio-frequency unit 1 and the second radio-frequency unit 2 carry out irreversible transformation to the second random code respectively, generate the second radio-frequency channel information that is used for radio communication.The first radio-frequency unit 1 and the second radio-frequency unit 2 are set up the second radio communication passage according to the second radio-frequency channel information, carry out radio communication.Adopt technical scheme of the present invention, by in communication process, switching the mode of different radio frequency communication port, reach the purpose that improves the anti-interference of communication system ability.
As shown in Figure 1, the first radio-frequency unit 1 in the jam-resistant communication system comprises first signal processor 11, the first radio frequency signal transceiving module 13, the first radio-frequency antenna 14, magnetic signal generation module 12.First signal processor 11 links to each other with magnetic signal generation module 12 with the first radio frequency signal transceiving module 13 respectively; The first radio frequency signal transceiving module 13 also links to each other with the first radio-frequency antenna 14.Wherein, magnetic signal generation module 12 is used for receiving the first random code that first signal processor 11 produces, and is emitted to the second radio-frequency unit 2.First signal processor 11 is used for the first random code is carried out irreversible transformation, generates the first radio-frequency channel information; And control the first radio frequency signal transceiving module 13 and the first radio-frequency antenna 14 is set up the first radio communication passage according to the first radio-frequency channel information and the second radio-frequency unit 2.The first radio frequency signal transceiving module 13 and the first radio-frequency antenna 14 also are used for receiving the second random code that the second radio-frequency unit 2 sends, and are sent to first signal processor 11; Carry out irreversible transformation by first signal processor 11, generate the second radio-frequency channel information.
As shown in Figure 1, the second radio-frequency unit 2 in the jam-resistant communication system comprise secondary signal processor 21, the second radio frequency signal transceiving module 23, the second radio-frequency antenna 24, apart from control module 22.Secondary signal processor 21 respectively with the second radio frequency signal transceiving module 23 with link to each other apart from control module 22; The second radio frequency signal transceiving module 23 also links to each other with the second radio-frequency antenna 24.Wherein, apart from control module 22, be used for judging the communication distance between this second radio-frequency unit 2 and the first radio-frequency unit 1; And in the first random code that interior reception the first radio-frequency unit 1 of legitimate correspondence distance sends, be sent to secondary signal processor 21 and carry out irreversible transformation, generate the first radio-frequency channel information.Secondary signal processor 21, for generation of the second random code, and control the second radio frequency signal transceiving module 23 and the second radio-frequency antenna 24 is set up the first radio communication passage according to the first radio-frequency channel information and the first radio-frequency unit 1, the second random code is sent to the first radio-frequency unit 1.Secondary signal processor 21 also is used for the second random code is carried out irreversible transformation, generates the second radio-frequency channel information.
Further, in order to guarantee the communications security between the first radio-frequency unit 1 and the second radio-frequency unit 2, prevent from being listened, the first radio-frequency unit 1 communicates by magnetic signal communication port and the second radio-frequency unit 2 first, judges communication distance between the two by the second radio-frequency unit 2.Only in the legitimate correspondence distance, the second radio-frequency unit 2 just is activated, and receives the first random code that the first radio-frequency unit 1 sends.The second radio-frequency unit 2 can be judged communication distance in such a way:
Preserve magnetic signal intensity preset value in the secondary signal processor 21 of the second radio-frequency unit 2, secondary signal processor 21 is sent to magnetic signal intensity preset value apart from control module 22, judge that by distance control module 22 the second radio-frequency unit 2 and the first radio-frequency unit 1 are whether in the legitimate correspondence distance: if the signal strength signal intensity that the first radio-frequency unit 1 sends the first random code is not less than magnetic signal intensity preset value, then apart from control module 22 judge the second radio-frequency units 2 and the first radio-frequency unit 1 legitimate correspondence apart from, can set up normal communication port; Otherwise forbid that the first radio-frequency unit 1 and the second radio-frequency unit 2 communicate.
As technical solution of the present invention on the other hand, provide a kind of anti-interference method of communication system, as shown in Figure 2, the first radio-frequency unit 1 and the second radio-frequency unit 2 are realized the anti-interference of communication system according to following steps:
Step 1, the first radio-frequency unit 1 produces the first random code, and is sent to the second radio-frequency unit 2 by the low-frequency magnetic signalling channel;
Step 2, the first radio-frequency unit 1 and the second radio-frequency unit 2 carry out irreversible transformation to the first random code respectively, generate the first radio-frequency channel information;
Step 3, the second radio-frequency unit 2 produces the second random code; The first radio-frequency unit 1 and the second radio-frequency unit 2 are set up the first radio communication passage according to the first radio-frequency channel information, and the second radio-frequency unit 2 is sent to the first radio-frequency unit 1 with the second random code;
Step 4, the first radio-frequency unit 1 and the second radio-frequency unit 2 carry out irreversible transformation to the second random code respectively, generate the second radio-frequency channel information;
Step 5, the first radio-frequency unit 1 and the second radio-frequency unit 2 are set up the second radio communication passage according to the second radio-frequency channel information, carry out radio communication.
Between the first radio-frequency unit 1 and the second radio-frequency unit 2, meet legitimate correspondence apart from the time, jam-resistant communication system strengthens the antijamming capability of system according to following process work.
At first, the first signal processor 11 in the first radio-frequency unit 1 produces the first random code, and is emitted to the second radio-frequency unit 2 by magnetic signal generation module 12; In the second radio-frequency unit 2 apart from control module 22 inductions and receive this signal, be sent to secondary signal processor 21.
Secondly, first signal processor 11 adopts identical algorithm with secondary signal processor 21, respectively the first random code is carried out irreversible transformation.For example adopt the 3DES algorithm that the first random code is carried out data encryption, and get predetermined bite wherein, it is transformed into the first radio-frequency channel information that represents frequency and mailing address.
Then, the first radio-frequency unit 1 and the second radio-frequency unit 2 carry out radio communication according to frequency and the mailing address of each self-generating.If the frequency of the two conforms to mailing address, then the two is shaken hands in this first radio communication passage and sets up communication; Otherwise forbid this communication behavior.
Then, secondary signal processor 21 produces the second random code, and controls the second radio frequency signal transceiving module 23 and the second radio-frequency antenna 24 the first radio communication passage by above-mentioned foundation the second random code is sent to the first radio-frequency unit 1.
At last, first signal processor 11 adopts identical algorithm again with secondary signal processor 21, respectively the second random code is carried out irreversible transformation, generate the second radio-frequency channel information (being another group frequency and mailing address) that is used for switching to improve the system rejection to disturbance ability.Like this, the first radio-frequency unit 1 and the second radio-frequency unit 2 just can carry out radio communication in the second radio communication passage that forms by this group frequency and mailing address.
As a kind of implementation of the present invention, the first radio-frequency unit 1 and the second radio-frequency unit 2 can be configured on the SIM cards of mobile phones, in communication process, switch the radio communication passage by the first radio-frequency unit 1 and the second radio-frequency unit 2, reach the purpose that improves interference free performance, like this account safety with regard to can guarantee to conclude the business by the mobile phone mode time.
Below only be preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a jam-resistant communication system is characterized in that,
Comprise the first radio-frequency unit and the second radio-frequency unit,
Described the first radio-frequency unit is for generation of the first random code; Described the first radio-frequency unit is sent to described the second radio-frequency unit by the low-frequency magnetic signalling channel with described the first random code; Described the first radio-frequency unit and described the second radio-frequency unit carry out irreversible transformation to described the first random code respectively, generate the first radio-frequency channel information that is used for radio communication;
Described the second radio-frequency unit is for generation of the second random code; Described the first radio-frequency unit and described the second radio-frequency unit are set up the first radio communication passage according to described the first radio-frequency channel information, and described the second radio-frequency unit is sent to described the first radio-frequency unit with described the second random code; Described the first radio-frequency unit and described the second radio-frequency unit carry out irreversible transformation to described the second random code respectively, generate the second radio-frequency channel information that is used for radio communication;
Described the first radio-frequency unit and described the second radio-frequency unit are set up the second radio communication passage according to described the second radio-frequency channel information, carry out radio communication.
2. according to jam-resistant communication system claimed in claim 1, it is characterized in that,
Described the first radio-frequency unit comprises first signal processor, the first radio frequency signal transceiving module, the first radio-frequency antenna, magnetic signal generation module;
Described first signal processor links to each other with described magnetic signal generation module with described the first radio frequency signal transceiving module respectively; Described the first radio frequency signal transceiving module also links to each other with described the first radio-frequency antenna;
Described magnetic signal generation module is used for receiving described the first random code that described first signal processor produces, and is emitted to described the second radio-frequency unit;
Described first signal processor is used for described the first random code is carried out irreversible transformation, generates described the first radio-frequency channel information; And control described the first radio frequency signal transceiving module and described the first radio-frequency antenna is set up described the first radio communication passage according to described the first radio-frequency channel information and described the second radio-frequency unit;
Described the first radio frequency signal transceiving module and described the first radio-frequency antenna also are used for receiving described the second random code that described the second radio-frequency unit sends, and are sent to described first signal processor; Carry out irreversible transformation by described first signal processor, generate described the second radio-frequency channel information.
3. according to jam-resistant communication system claimed in claim 1, it is characterized in that,
Described the second radio-frequency unit comprises secondary signal processor, the second radio frequency signal transceiving module, the second radio-frequency antenna, apart from control module;
Described secondary signal processor links to each other apart from control module with described with described the second radio frequency signal transceiving module respectively; Described the second radio frequency signal transceiving module also links to each other with described the second radio-frequency antenna;
Described apart from control module, be used for judging the communication distance between this second radio-frequency unit and described the first radio-frequency unit; And in described the first random code that described the first radio-frequency unit of the interior reception of legitimate correspondence distance sends, be sent to described secondary signal processor and carry out irreversible transformation, generate described the first radio-frequency channel information;
Described secondary signal processor, for generation of described the second random code, and control described the second radio frequency signal transceiving module and described the second radio-frequency antenna is set up described the first radio communication passage according to described the first radio-frequency channel information and described the first radio-frequency unit, described the second random code is sent to described the first radio-frequency unit;
Described secondary signal processor also is used for described the second random code is carried out irreversible transformation, generates described the second radio-frequency channel information.
4. according to jam-resistant communication system claimed in claim 3, it is characterized in that,
Preserve magnetic signal intensity preset value in the described secondary signal processor, described secondary signal processor is sent to described magnetic signal intensity preset value described apart from control module, judges that apart from control module described the second radio-frequency unit and the first radio-frequency unit are whether in the legitimate correspondence distance by described.
5. according to jam-resistant communication system claimed in claim 4, it is characterized in that,
If the signal strength signal intensity that described the first radio-frequency unit sends described the first random code is not less than described magnetic signal intensity preset value, then describedly judge that apart from control module described the second radio-frequency unit and described the first radio-frequency unit are in the legitimate correspondence distance.
6. according to each described jam-resistant communication system of claim 1 to 5, it is characterized in that,
Described the first radio-frequency channel information comprises frequency and mailing address;
Described the second radio-frequency channel information comprises frequency and mailing address.
7. the anti-interference method of a communication system is characterized in that,
The first radio-frequency unit produces the first random code, and is sent to the second radio-frequency unit by the low-frequency magnetic signalling channel;
Described the first radio-frequency unit and described the second radio-frequency unit carry out irreversible transformation to described the first random code respectively, generate the first radio-frequency channel information;
Described the second radio-frequency unit produces the second random code; Described the first radio-frequency unit and described the second radio-frequency unit are set up the first radio communication passage according to described the first radio-frequency channel information, and described the second radio-frequency unit is sent to described the first radio-frequency unit with described the second random code;
Described the first radio-frequency unit and described the second radio-frequency unit carry out irreversible transformation to described the second random code respectively, generate the second radio-frequency channel information;
Described the first radio-frequency unit and described the second radio-frequency unit are set up the second radio communication passage according to described the second radio-frequency channel information, carry out radio communication.
8. according to the anti-interference method of communication system claimed in claim 7, it is characterized in that,
First signal processor in described the first radio-frequency unit produces the first random code, and is emitted to described the second radio-frequency unit by the magnetic signal generation module in described the first radio-frequency unit;
What described the second radio-frequency unit was interior receives described the first random code apart from control module, and is sent to the secondary signal processor in described the second radio-frequency unit;
Described first signal processor and described secondary signal processor carry out irreversible transformation to described the first random code respectively, generate the first radio-frequency channel information;
Described secondary signal processor produces the second random code; Described the first radio-frequency unit and described the second radio-frequency unit are set up the first radio communication passage according to described the first radio-frequency channel information; Described the second radio-frequency unit is sent to described the first radio-frequency unit by the second radio frequency signal transceiving module and second radio-frequency antenna of its inside with described the second random code;
The first radio frequency signal transceiving module and the first radio-frequency antenna in described the first radio-frequency unit receive described the second random code, and are sent to described first signal processor;
Described first signal processor and described secondary signal processor carry out irreversible transformation to described the second random code respectively, generate the second radio-frequency channel information;
Described the first radio-frequency unit and described the second radio-frequency unit are set up the second radio communication passage according to described the second radio-frequency channel information, carry out radio communication.
9. according to the anti-interference method of claim 7 or 8 described communication systems, it is characterized in that,
Described the first radio-frequency channel information comprises frequency and mailing address;
Described the second radio-frequency channel information comprises frequency and mailing address.
10. according to the anti-interference method of communication system claimed in claim 9, it is characterized in that,
Described the first radio-frequency unit is set up radio communication passage according to the frequency of each self-generating with mailing address with described the second radio-frequency unit: if the frequency of the two conforms to mailing address, then the two sets up communication in this radio communication passage; Otherwise forbid this communication behavior.
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| CN106257938A (en) * | 2015-06-16 | 2016-12-28 | 中国人民解放军91872部队 | Meet the RFID radio communication anti-interference method of national military standard agreement |
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Application publication date: 20130130 |