CN107947831A - Frequency hopping frequency point generation method and frequency-hopping communication method - Google Patents
Frequency hopping frequency point generation method and frequency-hopping communication method Download PDFInfo
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- CN107947831A CN107947831A CN201711104310.8A CN201711104310A CN107947831A CN 107947831 A CN107947831 A CN 107947831A CN 201711104310 A CN201711104310 A CN 201711104310A CN 107947831 A CN107947831 A CN 107947831A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The present invention provides a kind of frequency hopping frequency point generation method, when being communicated using the frequency point of this method generation, can effectively improve the security and anti-interference of communication.For the generation method of the frequency hopping frequency point of network communication, comprise the following steps：Some different frequency points are chosen, frequency point list T is obtained after the completion of arrangement, sequence number numbering is carried out to each frequency point by putting in order, is numbered since 0, ascending order carries out；Choose one group of prime number；Prime number p is multiplied by sequence number i, then divided by frequency point sum and take the remainder, by the frequency point of the Serial No. remainder in the frequency point list T, the frequency point as Serial No. i in new frequency point list L.
Description
Technical field
The present invention relates to a kind of frequency hopping frequency point generation method and frequency-hopping communication method, is mainly used in power information collection neck
Domain.
Background technology
It is in the application of LoRa modules at present to use the communication modes such as fixed frequency and slow jump more, but all there are problems that, such as
The safety issue of data, is easily disturbed problem, and frequency point utilization rate is low, multipath effect etc., and there is relevant law in some places
Regulation, in the maximum channel residence time that the time of a certain channel occupancy no more than allows.
Micro power radio module is chiefly used in wirelessly determining frequency communication modes now, i.e. two modules are by fixing frequency point into line number
According to reception and transmission.Some use slow jump communication modes for the application of micro power radio module, i.e. module can be first in a certain frequency
Point sends data, if responded without data frame, can use next frequency point inside program in the frequency point list that defines into
Row communication, if responded again without data frame is received, the next frequency point being switched in frequency point list.It is slow to jump communication modes
Substantially, a frame data are also to send or receive in same frequency point, can simply be cut automatically when the communication of a certain frequency point is unsuccessful
Next frequency point is changed to be communicated.This mode solves the problems, such as because interference causes Communications failure, has certain resist
Interference, and may also can use more frequency point.But this mode is limited by preamble length, available to the quantity of frequency point
It is limited, it is impossible to too many.And the security of this kind of mode is also than relatively low, because a frame data are still in a frequency point
On received and dispatched, such data frame is still easier to be resolved, and when data frame length is long, in a certain channel occupancy
Time can exceed that relevant laws and regulations allow the maximum channel residence time.
The shortcomings that above-mentioned prior art, is：1st, the data transmit-receive mode that wireless communication module fixes frequency point is in a frequency
The enterprising row data of point send and receive, and the transceiving data under this communication modes is easier to get number by module by people
According to the content of frame, then parse, data safety and confidentiality are not good enough.If the 2nd, a frame data length is long,
The time of a certain channel occupancy may will exceed the maximum channel residence time that some countries allow.3rd, this fixed frequency communication side
It is also more far short of what is expected than frequency hopping communication modes in the anti-interference of formula.4th, allow the utilization rate of available frequency band also poor, because fixed
Frequency and slow jump only have used a certain fixed frequency point when communication, and the mode that frequency hopping communication is then switched using multifrequency point receives and dispatches number
According to.
The content of the invention
It is an object of the invention to overcome above-mentioned problem, there is provided a kind of frequency hopping frequency point generation method, utilizes the party
During the frequency point communication of method generation, the security and anti-interference of communication can be effectively improved.
Another object of the present invention is to provide a kind of frequency-hopping communication method.
The purpose of the present invention is by following technical solution to complete,
For the generation method of the frequency hopping frequency point of network communication, comprise the following steps：
Some different frequency points are chosen, frequency point list T is obtained after the completion of arrangement, sequence is carried out to each frequency point by putting in order
Number numbering, is numbered since 0 ing, the progress of ascending order；
Choose one group of prime number；
Prime number p is multiplied by sequence number i, then divided by frequency point sum and take the remainder, by Serial No. in the frequency point list T should
The frequency point of remainder, the frequency point as Serial No. i in new frequency point list L.
Preferably, the quantity of selected prime number is equal to frequency point quantity, after the completion of arrangement, formed with the frequency point arranged
Correspond；Prime number p is multiplied by the sequence number i for corresponding to frequency point therewith, then divided by frequency point sum and take the remainder, the frequency point is arranged
The frequency point of the Serial No. remainder in table T, the frequency point as Serial No. i in new frequency point list L.
For the generation method of the frequency hopping frequency point sequence of network communication, comprise the following steps：
A, some different frequency points are chosen, frequency point list T is obtained after the completion of arrangement, sequence is carried out to each frequency point by putting in order
Row number is numbered, and is numbered since 0, and ascending order carries out；
B, one group of prime number is chosen；
C, prime number p is multiplied by sequence number i, then divided by frequency point sum and take the remainder, by Serial No. in the frequency point list T
The frequency point of the remainder, the frequency point as Serial No. i in new frequency point list L.
D, repeat step C, until obtaining complete new frequency point list L.
Preferably, the quantity of selected prime number is equal to frequency point quantity, after the completion of arrangement, formed with the frequency point arranged
Correspond；Prime number p is multiplied by the sequence number i for corresponding to frequency point therewith, then divided by frequency point sum and take the remainder, the frequency point is arranged
The frequency point of the Serial No. remainder in table T, the frequency point as Serial No. i in new frequency point list L.
A kind of frequency hopping means of communication, frequency hopping frequency point is obtained using preceding method.
Preferably, sending and receiving for a frame data is completed under multiple frequency points.
Send and receive, communicated preferably, the frequency hopping frequency point in the frequency point list for passing through MCU management carries out data frame
Cheng Zhong, after a certain frequency point residence time terminates, into frequency hopping interrupt, be switched in interruption next frequency point continue send and
Receive the remaining data of the data frame.
Preferably, any frequency point residence time be symbol lengths integral multiple.
The present invention has the following advantages compared with prior art and effect：1st, the present invention is the list for including N number of frequency point, generation
The list without repetition frequency point of difference sequence, when being flexibly applied to be communicated in practical application, can greatly improve data peace
Full property and antijamming capability, the application for the different platform being applicable under same environment.2nd, FHSS (frequency hopping) communication side is employed
Sending and receiving for formula, i.e. a frame data is completed on multiple frequency points, with determine frequency communication modes in fixed a certain frequency
Point is different, and the Information Security of this communication modes greatly improves, and anti-interference also greatly enhances, and can make full use of can
With the frequency point of frequency range, frequency point utilization rate is improved, some places can also be solved defines time of a certain channel occupancy to surpass
The problem of spending the maximum channel residence time of relevant laws and regulations permission.
Brief description of the drawings
Fig. 1 is frequency hopping frequency point generation method schematic diagram of the present invention.
Fig. 2 is data frame composition of the present invention, sends data and receives the synchronization mechanism schematic diagram at data both ends.
Embodiment
Detailed introduction is done to the present invention below in conjunction with attached drawing.
A kind of generation method of frequency hopping frequency point for network communication of the invention, including：
In ISM (Industrial Scientific Medical) a certain free frequency range, some different frequency points are chosen,
Frequency point list T is obtained after the completion of arrangement (put in order no requirement (NR)), sequence number numbering, numbering are carried out to each frequency point by putting in order
Since 0, ascending order carries out (0,1,2,3,4,5 ...)；
Choose one group of prime number；
Prime number p is multiplied by sequence number i, then divided by frequency point sum and take the remainder, by Serial No. in the frequency point list T should
The frequency point of remainder, the frequency point as Serial No. i in new frequency point list L.
Preferably, the quantity of selected prime number is equal to frequency point quantity, after the completion of arrangement (put in order no requirement (NR)), with arrangement
The good frequency point, which is formed, to be corresponded；Prime number p is multiplied by the sequence number i for corresponding to frequency point therewith, then divided by frequency point sum and take
Remainder, by the frequency point of the Serial No. remainder in the frequency point list T, the frequency point as Serial No. i in new frequency point list L.
In addition, the present invention be based on FHSS (Frequency-Hopping Spread Spectrum) communication modes, comprising
The frequency point list T of N number of frequency point, generates the frequency point list L without repetition frequency point of different sequences, as shown in Figure 1, specifically including：
A, in ISM (Industrial Scientific Medical) a certain free frequency range, some different frequencies are chosen
Point, frequency point list T is obtained after the completion of arrangement (put in order no requirement (NR)), and sequence number numbering is carried out to each frequency point by putting in order,
For numbering since 0, ascending order carries out (0,1,2,3,4,5 ...)；
B, one group of prime number is chosen；
C, prime number p is multiplied by sequence number i, then divided by frequency point sum and take the remainder, by Serial No. in the frequency point list T
The frequency point of the remainder, the frequency point as Serial No. i in new frequency point list L；
D, repeat step C, until obtaining complete new frequency point list L.
The new frequency point list L so generated, which does not have the situation that frequency point repeats, to be existed, and can be formed according to the method
Some groups of frequency point sequences, it is achieved thereby that more safe and reliable, strong interference immunity, using more flexible frequency hopping communication side
Formula.
Preferably, the quantity of selected prime number is equal to frequency point quantity, after the completion of arrangement (put in order no requirement (NR)), with arrangement
The good frequency point, which is formed, to be corresponded；Prime number p is multiplied by the sequence number i for corresponding to frequency point therewith, then divided by frequency point sum and take
Remainder, by the frequency point of the Serial No. remainder in the frequency point list T, the frequency point as Serial No. i in new frequency point list L.
A kind of FHSS frequency hopping means of communication using LoRa wireless modules of the invention, different from determining the communication side such as frequency and slow jump
Formula, not transceiving data is all on a frequency point.One group of frequency point row has been used in the invention when sending and receiving a frame data
(i.e. sending and receiving for a frame data is completed under multiple frequency points, the frequency point for multiple frequency points or whole frequency points in table
Obtained using above-mentioned frequency hopping frequency point generation method), the frequency point number used is related with data frame length, and can be to frequency point list
It is ranked up, to reduce data communication interference.The Information Security of this kind of scheme is high, and anti-interference is also stronger, and frequency point utilizes
Rate is high, while solves the holdup time excessive problem in single frequency point.Frequency hopping communication modes (FHSS) are by microcontroller
Frequency hopping frequency point in the frequency point list of device (MCU) management is transmitted and receives data.In communication process, it is resident in a certain frequency point
After time terminates, interrupted into frequency hopping, next frequency point is switched in interruption and continues to data.In the resident of any frequency point
Time can realize that it is that symbol lengths (are specifically calculated by BW bandwidth and SF spreading factors by configuring LoRa chip registers
Obtain character rate Rs=BW/ (2^SF).The transmission time Ts=1/Rs of one symbol, symbol lengths refer to Ts this value)
Integral multiple, referring specifically to Fig. 2.
Embodiment 1
A, in 433MHZ frequency ranges, 35 different frequency points is chosen, arranges in order, obtains frequency point list T, by putting in order
Sequence number numbering is carried out to each frequency point；
B, one group of prime number is chosen, after the completion of arrangement (7,11,13,19,23,31,37,41,47 ... such prime number), with
The frequency point arranged, which is formed, to be corresponded；
C, prime number p is multiplied by the sequence number i for corresponding to frequency point therewith, then divided by frequency point sum and take the remainder, by the frequency point
The frequency point of the Serial No. remainder in list T, the frequency point as Serial No. i in new frequency point list L；
D, repeat step C, until obtaining complete new frequency point list L.
The new frequency point sequence L so generated, which does not have the situation that frequency point repeats, to be existed.Carried out between two modules
Communication, a frame data can be used to the part in this 35 frequency point (sequentially according to the order of new frequency point list L) in transmitting-receiving
Frequency point or whole frequency point, the frequency point number used is related with the data frame length of transmission, and data frame length is longer to be used
Frequency point data can be more.
Embodiment 2
A, in 470MHZ frequency ranges, 60 different frequency points is chosen, arranges in order, obtains frequency point list T, by putting in order
Sequence number numbering is carried out to each frequency point；
B, one group of prime number is chosen, after the completion of arrangement (7,11,13,19,23,31,37,41,47 ... such prime number), with
The frequency point arranged, which is formed, to be corresponded；
C, prime number p is multiplied by the sequence number i for corresponding to frequency point therewith, then divided by frequency point sum and take the remainder, by the frequency point
The frequency point of the Serial No. remainder in list T, the frequency point as Serial No. i in new frequency point list L；
D, repeat step C, until obtaining complete new frequency point list L.
The new frequency point sequence L so generated, which does not have the situation that frequency point repeats, to be existed.Carried out between two modules
Communication, a frame data can be used to the part in this 60 frequency point (sequentially according to the order of new frequency point list L) in transmitting-receiving
Frequency point or whole frequency point, the frequency point number used is related with the data frame length of transmission, and data frame length is longer to be used
Frequency point data can be more.
Embodiment 3
A, in 915MHZ frequency ranges, 64 different frequency points is chosen, arranges in order, obtains frequency point list T, by putting in order
Sequence number numbering is carried out to each frequency point；
B, one group of prime number is chosen, after the completion of arrangement (7,11,13,19,23,31,37,41,47 ... such prime number), with
The frequency point arranged, which is formed, to be corresponded；
C, prime number p is multiplied by the sequence number i for corresponding to frequency point therewith, then divided by frequency point sum and take the remainder, by the frequency point
The frequency point of the Serial No. remainder in list T, the frequency point as Serial No. i in new frequency point list L；
D, repeat step C, until obtaining complete new frequency point list L.
The new frequency point sequence L so generated, which does not have the situation that frequency point repeats, to be existed.Carried out between two modules
Communication, a frame data can be used to the part in this 64 frequency point (sequentially according to the order of new frequency point list L) in transmitting-receiving
Frequency point or whole frequency point, the frequency point number used is related with the data frame length of transmission, and data frame length is longer to be used
Frequency point data can be more.
Claims (8)
1. the generation method of a kind of frequency hopping frequency point for network communication, it is characterised in that comprise the following steps：
Some different frequency points are chosen, frequency point list T is obtained after the completion of arrangement, sequence number volume is carried out to each frequency point by putting in order
Number, number since 0, ascending order carries out；
Choose one group of prime number；
Prime number p is multiplied by sequence number i, then divided by frequency point sum and take the remainder, by Serial No. remainder in the frequency point list T
Frequency point, the frequency point as Serial No. i in new frequency point list L.
2. the generation method of the frequency hopping frequency point according to claim 1 for network communication, it is characterised in that：Selected prime number
Quantity be equal to frequency point quantity, after the completion of arrangement, formed and corresponded with the frequency point that arranges；Prime number p is multiplied by right therewith
Answer the sequence number i of frequency point, then divided by frequency point sum and take the remainder, by the frequency of the Serial No. remainder in the frequency point list T
Point, the frequency point as Serial No. i in new frequency point list L.
3. the generation method of a kind of frequency hopping frequency point sequence for network communication, it is characterised in that comprise the following steps：
A, some different frequency points are chosen, frequency point list T is obtained after the completion of arrangement, sequence number is carried out to each frequency point by putting in order
Numbering, is numbered since 0, and ascending order carries out；
B, one group of prime number is chosen；
C, prime number p is multiplied by sequence number i, then divided by frequency point sum and take the remainder, by Serial No. in the frequency point list T, this is remaining
Several frequency points, the frequency point as Serial No. i in new frequency point list L.
D, repeat step C, until obtaining complete new frequency point list L.
4. the generation method of the frequency hopping frequency point sequence according to claim 3 for network communication, it is characterised in that：It is selected
The quantity of prime number is equal to frequency point quantity, after the completion of arrangement, is formed and corresponded with the frequency point arranged；Prime number p be multiplied by with
Correspondence frequency point sequence number i, then divided by frequency point sum and take the remainder, by Serial No. remainder in the frequency point list T
Frequency point, the frequency point as Serial No. i in new frequency point list L.
A kind of 5. frequency hopping means of communication, it is characterised in that：Frequency hopping frequency is obtained using claim 1-4 any one the method
Point.
6. the frequency hopping means of communication according to claim 5, it is characterised in that：One frame data are sent and received in multiple frequencies
Point is lower to be completed.
7. the frequency hopping means of communication according to claim 5, it is characterised in that：Pass through the jump in the frequency point list of MCU management
Again and again point progress data frame sends and receives, in communication process, after a certain frequency point residence time terminates, into frequency hopping
It is disconnected, next frequency point is switched in interruption and continues to send and receive the remaining data of the data frame.
8. the frequency hopping means of communication according to claim 7, it is characterised in that：Grown in the residence time of any frequency point for symbol
The integral multiple of degree.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111464958A (en) * | 2020-04-09 | 2020-07-28 | 杭州粒合信息科技有限公司 | Multi-frequency point communication method based on wireless communication technology |
| CN116129604A (en) * | 2023-04-17 | 2023-05-16 | 成都睿瞳科技有限责任公司 | Automatic alarm method, system and storage medium based on monitoring data |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162921A (en) * | 2007-10-27 | 2008-04-16 | 中兴通讯股份有限公司 | Frequency hopping sequence generating method and frequency hopping resource allocation method using the same |
| CN101888261A (en) * | 2010-05-28 | 2010-11-17 | 北京科技大学 | Frequency hopping device and method on reconstructable channel set |
| CN102045085A (en) * | 2009-10-09 | 2011-05-04 | 大唐移动通信设备有限公司 | Sequence frequency hopping method and device based on ARNS (Aeronautical Radio Navigation Service) |
| US20140119408A1 (en) * | 2012-10-31 | 2014-05-01 | Siemens Ltd., China | Synchronous access method, and communication device and system in frequency hopping radio communication |
| CN103856241A (en) * | 2014-02-06 | 2014-06-11 | 徐州飞梦电子科技有限公司 | Frequency hopping communication method for model airplane |
| CN103944606A (en) * | 2014-02-28 | 2014-07-23 | 电子科技大学 | Self-adaptation frequency hopping pattern generation method |
| CN105656512A (en) * | 2016-01-29 | 2016-06-08 | 深圳市博昊智联有限公司 | Freely networking wireless system and networking method thereof |
-
2017
- 2017-11-10 CN CN201711104310.8A patent/CN107947831B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162921A (en) * | 2007-10-27 | 2008-04-16 | 中兴通讯股份有限公司 | Frequency hopping sequence generating method and frequency hopping resource allocation method using the same |
| CN102045085A (en) * | 2009-10-09 | 2011-05-04 | 大唐移动通信设备有限公司 | Sequence frequency hopping method and device based on ARNS (Aeronautical Radio Navigation Service) |
| CN101888261A (en) * | 2010-05-28 | 2010-11-17 | 北京科技大学 | Frequency hopping device and method on reconstructable channel set |
| US20140119408A1 (en) * | 2012-10-31 | 2014-05-01 | Siemens Ltd., China | Synchronous access method, and communication device and system in frequency hopping radio communication |
| CN103856241A (en) * | 2014-02-06 | 2014-06-11 | 徐州飞梦电子科技有限公司 | Frequency hopping communication method for model airplane |
| CN103944606A (en) * | 2014-02-28 | 2014-07-23 | 电子科技大学 | Self-adaptation frequency hopping pattern generation method |
| CN105656512A (en) * | 2016-01-29 | 2016-06-08 | 深圳市博昊智联有限公司 | Freely networking wireless system and networking method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111464958A (en) * | 2020-04-09 | 2020-07-28 | 杭州粒合信息科技有限公司 | Multi-frequency point communication method based on wireless communication technology |
| CN111464958B (en) * | 2020-04-09 | 2022-05-31 | 杭州粒合信息科技有限公司 | Multi-frequency point communication method based on wireless communication technology |
| CN116129604A (en) * | 2023-04-17 | 2023-05-16 | 成都睿瞳科技有限责任公司 | Automatic alarm method, system and storage medium based on monitoring data |
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