CN114244397A

CN114244397A - Frequency hopping communication device, method, chip, transmitter and storage medium

Info

Publication number: CN114244397A
Application number: CN202210174181.4A
Authority: CN
Inventors: 赵东艳; 李德建; 高以杰; 甘杰; 赵旭; 田阳; 宋波; 危炜; 邵瑾; 刘浩
Original assignee: State Grid Corp of China SGCC; Beijing Smartchip Microelectronics Technology Co Ltd
Current assignee: State Grid Corp of China SGCC; Beijing Smartchip Microelectronics Technology Co Ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-03-25
Anticipated expiration: 2042-02-25
Also published as: CN114244397B; WO2023159925A1

Abstract

The invention discloses a frequency hopping communication device, a frequency hopping communication method, a chip, a transmitter and a storage medium, wherein the device comprises: the pseudo-random sequence generation module is used for generating a pseudo-random frequency hopping sequence, and the pseudo-random frequency hopping sequence keeps synchronization between the transmitter and the receiver; the real random sequence generation module is used for generating a real random frequency hopping sequence; the sequence selection decision module is used for inserting a real random frequency hopping sequence into the pseudo random frequency hopping sequence to generate a target frequency hopping sequence; and the transmitting module is used for transmitting data according to the target frequency hopping sequence. Therefore, the data communication safety can be effectively improved by inserting the real random frequency hopping sequence into the pseudo random frequency hopping sequence, and the method is suitable for communication occasions with high requirements on safety and reliability.

Description

Frequency hopping communication device, method, chip, transmitter and storage medium

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a frequency hopping communication apparatus, a frequency hopping communication method, a chip, a transmitter, and a storage medium.

Background

In a short-distance wireless communication system, in order to improve the interference resistance and the security of the system, a frequency hopping communication technology based on pseudo random sequence control, such as bluetooth communication, is generally adopted.

With the development of frequency hopping technology, the adaptive frequency hopping technology with relatively hot fire is researched at present, such as interference slot adaptive frequency hopping technology, hopping speed adaptive frequency hopping technology, power consumption adaptive frequency hopping technology and the like, compared with the existing 'blind frequency hopping' technology, the control on the aspects of frequency hopping frequency point selection, frequency hopping rate and frequency hopping signal power consumption control is more intelligent and efficient, and the anti-interference capability and safety capability of the system are greatly improved. In addition, multiple pseudo-random sequence frequency hopping techniques have been developed, for example, using multiple selectable pseudo-random sequences to control the transmitted signal, where the multiple selectable pseudo-random sequences each correspond to a different transmission timeslot.

However, research shows that the current frequency hopping technology controls frequency hopping patterns based on pseudo-random sequences, and the pseudo-random sequences are not random in nature, so that possibility is provided for cracking the pseudo-random sequences, and the safety is low. For example, with the rapid development of semiconductor technology and the continuous improvement of the tracking device speed, the signal tracking capability is stronger and stronger, but the frequency hopping communication chip is hard to be qualitatively improved in the frequency hopping speed due to factors such as cost and power consumption, so that the difficulty of cracking the frequency hopping pattern controlled by the pseudo random sequence is smaller and smaller, for example, the high-speed tracking device is easy to crack the frequency hopping rule by tracking the frequency hopping rule of one or more time slots, and accurately tracks the frequency hopping signal in the next time slot, and an attacker can apply corresponding interference signals according to the frequency hopping rule to hinder the normal operation of communication, also can intercept useful signals and crack useful signal data, so the current unsafe frequency hopping technology will be more and more along with the development of the technology, and the anti-interference capability will be lower and more. However, with the development of communication technology, the requirements of security and anti-interference performance of short-distance wireless communication are higher and higher in some special scenes, such as power distribution and utilization systems, smart home door locks, and the like, so that the current frequency hopping technology faces a great potential security risk in communication application occasions with extremely high requirements on information security and reliability.

Disclosure of Invention

In view of the above technical problems, the present invention provides a frequency hopping communication apparatus, a frequency hopping communication method, a chip, a transmitter, and a storage medium, which can effectively improve data communication security.

A frequency hopping communications apparatus for use with a transmitter, the apparatus comprising: the pseudo-random sequence generation module is used for generating a pseudo-random frequency hopping sequence, and the pseudo-random frequency hopping sequence keeps synchronization between the transmitter and the receiver; the real random sequence generation module is used for generating a real random frequency hopping sequence; the sequence selection decision module is used for inserting a real random frequency hopping sequence into the pseudo random frequency hopping sequence to generate a target frequency hopping sequence; and the transmitting module is used for transmitting data according to the target frequency hopping sequence.

According to the frequency hopping communication device provided by the embodiment of the invention, the data communication safety can be effectively improved by inserting the real random frequency hopping sequence into the pseudo random frequency hopping sequence, and the frequency hopping communication device is suitable for communication occasions with higher requirements on safety and reliability.

In some embodiments, the sequence selection decision module is specifically configured to: and inserting a real random frequency hopping sequence between any frequency hopping data of the pseudo random frequency hopping sequence corresponding to the current time slot to generate a target frequency hopping sequence.

In some embodiments, the sequence selection decision module is specifically configured to: and inserting a real random frequency hopping sequence between every two adjacent frequency hopping data of the pseudo random frequency hopping sequence corresponding to the current time slot to generate a target frequency hopping sequence.

In some embodiments, the sequence selection decision module is further to: and acquiring the random number of the hopping frequencies of the real random hopping frequency sequence.

In some embodiments, the sequence selection decision module is further to: and acquiring a safety parameter and/or a power consumption parameter, and acquiring the frequency hopping number of the real random frequency hopping sequence according to the safety parameter and/or the power consumption parameter.

In some embodiments, the sequence selection decision module is specifically configured to: and acquiring an application scene, and acquiring the frequency hopping number from a preset database according to the application scene, wherein the application scene is in a corresponding relation with the safety parameter and/or the power consumption parameter.

In some embodiments, the preset database stores a value range of the frequency hopping number, and the sequence selection decision module is specifically configured to: randomly selecting a number from the range of the number of hopping frequencies as the hopping number.

In some embodiments, the sequence selection decision module is specifically configured to: and acquiring a safety level demand value and a power consumption level demand value, acquiring a safety level weight and a power consumption level weight, weighting, summing and rounding according to the safety level demand value, the power consumption level demand value, the safety level weight and the power consumption level weight to acquire the frequency hopping number.

In some embodiments, the sequence selection decision module is specifically configured to: randomly selecting one weight from the preset safety level weight range as a safety level weight, and randomly selecting one weight from the preset power consumption level weight range as a power consumption level weight.

In some embodiments, the true random sequence generation module comprises: and the sequence selection decision module is also used for acquiring the hop data of the hop frequency from the initial real random hop sequence to form the real random hop sequence.

In some embodiments, the sequence selection decision module is further to: and when the target frequency hopping sequence corresponding to the current time slot is determined to be used, updating one or more real random frequency hopping sequences in the target frequency hopping sequence to generate a new target frequency hopping sequence.

In some embodiments, the updating comprises at least one of a position adjustment, a data addition or subtraction, and a data update of the hop data in the true random hopping sequence.

In some embodiments, the true random sequence generation module comprises: and the sequence randomization unit is used for randomizing part of frequency hopping data in the generated pseudo-random frequency hopping sequence according to the frequency hopping number so as to form a real random frequency hopping sequence.

In some embodiments, the randomization process includes at least one of random ordering, random decimation, and random interpolation.

In some embodiments, the apparatus further comprises: and the frequency hopping sequence management module is used for acquiring the receiving error rate of the data and updating the pseudorandom frequency hopping sequence according to the receiving error rate.

In some embodiments, the transmitting module comprises: the frequency selection unit is used for determining the frequency hopping frequency corresponding to the target frequency hopping sequence; and the data transmitting unit is used for transmitting data according to the frequency hopping frequency.

In some embodiments, the transmitting module further comprises: the data transmission device comprises a data selection unit and a data modulation unit, wherein the data selection unit is used for outputting useful data to the data modulation unit for modulation when the frequency hopping frequency is the frequency hopping frequency corresponding to the pseudorandom frequency hopping sequence, so that the data transmission unit transmits the modulation data of the useful data according to the frequency hopping frequency; and the data selection unit is also used for outputting interference data to the data modulation unit for modulation when the frequency hopping frequency is the frequency hopping frequency corresponding to the real random frequency hopping sequence, so that the data transmission unit transmits the modulation data of the interference data according to the frequency hopping frequency.

In some embodiments, the data modulation unit modulates the useful data and the interference data in the same modulation mode.

A transmitter comprising the aforementioned frequency hopping communications device.

According to the transmitter provided by the embodiment of the invention, based on the frequency hopping communication device, the safety of data communication can be effectively improved by inserting the real random frequency hopping sequence into the pseudo random frequency hopping sequence, and the transmitter is suitable for communication occasions with higher requirements on safety and reliability.

A frequency hopping communication method is applied to a transmitter, and the method comprises the following steps: generating a pseudo-random frequency hopping sequence and a real random frequency hopping sequence, wherein the pseudo-random frequency hopping sequence keeps synchronization between a transmitter and a receiver; inserting a true random frequency hopping sequence into the pseudo random frequency hopping sequence to generate a target frequency hopping sequence; and transmitting data according to the target frequency hopping sequence.

According to the frequency hopping communication method provided by the embodiment of the invention, the safety of data communication can be effectively improved by inserting the real random frequency hopping sequence into the pseudo random frequency hopping sequence, and the method is suitable for communication occasions with higher requirements on safety and reliability.

In some embodiments, inserting a true random hopping sequence in the pseudo random hopping sequence to generate the target hopping sequence comprises: and inserting a real random frequency hopping sequence between any frequency hopping data of the pseudo random frequency hopping sequence corresponding to the current time slot to generate a target frequency hopping sequence.

In some embodiments, inserting a true random hopping sequence in the pseudo random hopping sequence to generate the target hopping sequence comprises: and inserting a real random frequency hopping sequence between every two adjacent frequency hopping data of the pseudo random frequency hopping sequence corresponding to the current time slot to generate a target frequency hopping sequence.

In some embodiments, inserting a true random hopping sequence in the pseudo random hopping sequence to generate the target hopping sequence further comprises: and acquiring the random number of the hopping frequencies of the real random hopping frequency sequence.

In some embodiments, inserting a true random hopping sequence in the pseudo random hopping sequence to generate the target hopping sequence further comprises: acquiring a safety parameter and/or a power consumption parameter; and acquiring the frequency hopping number of the real random frequency hopping sequence according to the safety parameter and/or the power consumption parameter.

In some embodiments, obtaining the hopping number of the true random hopping sequence according to the security parameter and/or the power consumption parameter includes: acquiring an application scene, wherein the application scene is in a corresponding relation with a safety parameter and/or a power consumption parameter; and acquiring the frequency hopping number from a preset database according to the application scene.

In some embodiments, the preset database stores a value range of the frequency hopping number, and the step of obtaining the frequency hopping number from the preset database according to the security parameter and/or the power consumption parameter includes: randomly selecting a number from the range of the number of hopping frequencies as the hopping number.

In some embodiments, obtaining the hopping number of the true random hopping sequence according to the security parameter and/or the power consumption parameter includes: acquiring a safety level requirement value and a power consumption level requirement value; acquiring a security level weight and a power consumption level weight; and weighting, summing and rounding according to the safety level requirement value, the power consumption level requirement value, the safety level weight and the power consumption level weight to obtain the frequency hopping number.

In some embodiments, obtaining the security level weight and the power consumption level weight comprises: randomly selecting a weight from a preset security level weight range as a security level weight; randomly selecting one weight from a preset power consumption level weight range as the power consumption level weight.

In some embodiments, generating a true random hopping sequence comprises: generating an initial true random frequency hopping sequence; and acquiring the hop data of the hop number from the initial real random frequency hopping sequence to form a real random frequency hopping sequence.

In some embodiments, after generating the target hopping sequence, the method further comprises: and when the target frequency hopping sequence corresponding to the current time slot is determined to be used, updating one or more real random frequency hopping sequences in the target frequency hopping sequence to generate a new target frequency hopping sequence.

In some embodiments, generating a true random hopping sequence comprises: and randomizing part of frequency hopping data in the generated pseudo-random frequency hopping sequence according to the frequency hopping number to form a real random frequency hopping sequence.

In some embodiments, the method further comprises: acquiring a receiving error rate of data; and updating the pseudo-random frequency hopping sequence according to the receiving error rate.

In some embodiments, transmitting data according to a target hopping sequence comprises: determining the frequency hopping frequency corresponding to the target frequency hopping sequence; data is transmitted according to a frequency hopping frequency.

In some embodiments, transmitting data according to a hopping frequency comprises: when the frequency hopping frequency is the frequency hopping frequency corresponding to the pseudorandom frequency hopping sequence, transmitting the modulation data of the useful data according to the frequency hopping frequency; and when the frequency hopping frequency is the frequency hopping frequency corresponding to the real random frequency hopping sequence, transmitting the modulation data of the interference data according to the frequency hopping frequency.

In some embodiments, the useful data and the interference data are modulated in the same modulation manner to generate corresponding modulated data.

A computer-readable storage medium on which a frequency hopping communication program is stored, the frequency hopping communication program implementing the aforementioned frequency hopping communication method when executed by a processor.

According to the computer-readable storage medium of the embodiment of the invention, by the frequency hopping communication method, the safety of data communication can be effectively improved by inserting the real random frequency hopping sequence into the pseudo random frequency hopping sequence, and the method is suitable for communication occasions with higher requirements on safety and reliability.

A frequency hopping communication chip, comprising: the frequency hopping communication method comprises a memory, a processor and a frequency hopping communication program which is stored on the memory and can run on the processor, wherein when the processor executes the program, the frequency hopping communication method is realized.

According to the frequency hopping communication chip provided by the embodiment of the invention, based on the frequency hopping communication method, the safety of data communication can be effectively improved by inserting the real random frequency hopping sequence into the pseudo random frequency hopping sequence, and the frequency hopping communication chip is suitable for communication occasions with higher requirements on safety and reliability.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a diagram of an application scenario of a frequency hopping communications device according to one embodiment of the present invention;

fig. 2 is a schematic diagram of a frequency hopping communications device according to an embodiment of the present invention;

FIG. 3 is a diagram of a target hopping sequence according to one embodiment of the invention;

fig. 4 is a schematic diagram of a transmitter and a receiver according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a transmitter and a receiver according to another embodiment of the present invention;

fig. 6 is a flowchart illustrating a frequency hopping communication method according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

It should be noted that the frequency hopping communication apparatus, method, chip, transmitter, and storage medium provided in the present invention can be applied to the application environment shown in fig. 1. Wherein, wireless data communication is performed between the transmitter 1 and the receiver 2, during the data communication, the transmitter 1 generates a pseudo-random frequency hopping sequence (which keeps synchronization between the transmitter 1 and the receiver 2) and a true random frequency hopping sequence, and inserts the true random frequency hopping sequence into the pseudo-random frequency hopping sequence to generate a target frequency hopping sequence, and transmits data to the receiver 2 according to the target frequency hopping sequence. The transmitter 1 and the receiver 2 may be related devices in an application field such as a communication system for power distribution, an intelligent home door lock, and the like, and are not limited herein.

Fig. 2 is a schematic structural diagram of a frequency hopping communication device according to an embodiment of the present invention, which is described by taking the application of the frequency hopping communication device to the transmitter in fig. 1 as an example, and referring to fig. 2, the frequency hopping communication device may include: a pseudo-random sequence generation module 11, a true random sequence generation module 12, a sequence selection decision module 13 and a transmission module 14.

The pseudo-random sequence generation module 11 is configured to generate a pseudo-random frequency hopping sequence, where the pseudo-random frequency hopping sequence keeps synchronization between a transmitter and a receiver; the real random sequence generation module 12 is configured to generate a real random frequency hopping sequence; the sequence selection decision module 13 is configured to insert a true random frequency hopping sequence into the pseudo random frequency hopping sequence to generate a target frequency hopping sequence; the transmitting module 14 is configured to transmit data according to a target hopping sequence.

Specifically, the pseudo-random sequence generating module 11 may be a pseudo-random sequence generator or the like, and is mainly configured to generate a pseudo-random frequency hopping sequence so as to transmit useful data based on a frequency hopping frequency corresponding to the pseudo-random frequency hopping sequence, and the pseudo-random frequency hopping sequence is synchronized between the transmitter and the receiver, for example, the pseudo-random frequency hopping sequence is negotiated through a dedicated channel so that the transmitter and the receiver have the same pseudo-random frequency hopping sequence, so that the receiver can obtain the useful data based on the same pseudo-random frequency hopping sequence after receiving the data transmitted by the transmitter.

The true random sequence generating module 12 may be a true random sequence generator, and is mainly configured to generate a true random frequency hopping sequence so as to transmit interference data based on a frequency hopping frequency corresponding to the true random frequency hopping sequence, and the true random frequency hopping sequence is randomly generated so as to participate in frequency hopping control through the true random frequency hopping sequence, so that an external environment cannot track and obtain a pseudo random frequency hopping sequence, thereby improving security and reliability of data communication.

The sequence selection decision module 13 is connected to the pseudo-random sequence generation module 11 and the true random sequence generation module 12, and is mainly used to insert a true random frequency hopping sequence into the pseudo-random frequency hopping sequence to generate a target frequency hopping sequence, for example, a randomly generated true random frequency hopping sequence may be inserted between any frequency hopping data in the pseudo-random frequency hopping sequence, that is, the insertion position of the true random frequency hopping sequence may be arbitrary, and the inserted true random frequency hopping sequence may be arbitrary, for example, the frequency hopping data of the inserted true random frequency hopping sequence have different positions, the frequency hopping data number, that is, the frequency hopping number, is different, or the frequency hopping data themselves are different, further, the frequency hopping number of the true random frequency hopping sequence may be a random number, and the frequency hopping data themselves may be random, and specifically, there is no limitation, as long as the target frequency hopping sequence generated by inserting the true random frequency hopping sequence into the pseudo-random frequency hopping sequence appears to have no external appearance of the target frequency hopping sequence The rule can be repeated. Due to the fact that the generated target frequency hopping sequence is irregular and can be circulated, the target frequency hopping sequence appears to be close to a real random characteristic from the outside, an attacker cannot obtain the pseudo-random frequency hopping sequence and further cannot obtain useful data based on the pseudo-random frequency hopping sequence, tracking resistance and interception resistance of data communication are greatly improved, and the problems that due to the fact that the pseudo-random frequency hopping sequence is adopted to control frequency hopping patterns, safety is low, and signals are easy to track and intercept are solved effectively. It should be noted that, for the receiver, since the pseudo-random frequency hopping sequence keeps synchronization between the transmitter and the receiver, the receiver does not need to know the frequency hopping frequency corresponding to the true random frequency hopping sequence, and only needs to know which frequency hopping frequency sent when is the useful frequency hopping frequency among all frequency hopping frequencies transmitted by the transmitter, that is, only needs to know the frequency hopping pattern controlled by the pseudo-random frequency hopping sequence, and does not increase the receiving difficulty of the receiver.

The transmitting module 14 is connected to the sequence selection decision module 13, and is mainly used for transmitting data according to the target frequency hopping sequence, for example, determining the frequency hopping frequency corresponding to the target frequency hopping sequence, and then transmitting useful data and interference data according to the frequency hopping frequency.

In the embodiment, the frequency hopping control is performed on the transmitted data by using a mode of combining the pseudorandom frequency hopping sequence and the real random frequency hopping sequence, namely, the real random frequency hopping sequence is inserted into the pseudorandom frequency hopping sequence, so that the frequency hopping control is in a random characteristic close to the real random characteristic, the tracking resistance and the interception resistance of data communication are greatly improved, the problems that the safety is low and signals are easy to track and intercept caused by only adopting the pseudorandom frequency hopping sequence to control the frequency hopping pattern are effectively solved, the method is suitable for application occasions with high requirements on safety and reliability, such as a communication system for power distribution, an intelligent household door lock and the like, the potential safety risk problem under the current especially short-distance communication scene is solved, and the signal receiving difficulty of a receiver is not increased.

In some embodiments, the sequence selection decision module 13 is specifically configured to: and inserting a real random frequency hopping sequence between any frequency hopping data of the pseudo random frequency hopping sequence corresponding to the current time slot to generate a target frequency hopping sequence.

That is, the sequence selection decision module 13 may insert a randomly generated true random hopping sequence between arbitrary hopping data of the pseudo random hopping sequence to generate the target hopping sequence. For example, a randomly generated true random hopping sequence may be inserted with one or more hopping data intervals, which may or may not be regular. For example, a randomly generated true random hopping sequence may be inserted every two hopping data, or one or more hopping data may be inserted at random intervals into a randomly generated true random hopping sequence.

In some embodiments, the sequence selection decision module 13 is specifically configured to: and inserting a real random frequency hopping sequence between every two adjacent frequency hopping data of the pseudo random frequency hopping sequence corresponding to the current time slot to generate a target frequency hopping sequence.

That is, the sequence selection decision module 13 may insert a randomly generated true random hopping sequence between the hopping data of every two adjacent pseudo random hopping sequences to generate the target hopping sequence.

For example, referring to fig. 3, in the current timeslot, the hopping data of the pseudo-random hopping sequence includes hopping data W1, W3 and W2, and when inserting the true random hopping sequence, the sequence selection decision module 13 may insert a true random hopping sequence ZA between the hopping data W1 and W3 of the pseudo-random hopping sequence, and insert a true random hopping sequence ZB between the hopping data W3 and W2 of the pseudo-random hopping sequence, where the true random hopping sequence ZA includes three hopping data Z1, Z3 and Z2, and the true random hopping sequence ZB includes hopping data Z5 and Z4, so as to finally obtain the target hopping sequence shown in fig. 3. It should be noted that this example is only an exemplary illustration, and not a specific limitation to the present invention, for example, frequency hopping data of one or more pseudo random frequency hopping sequences may be included in each time slot, and the inserted true random frequency hopping sequence may be different from this example in the frequency hopping position, the frequency hopping number, and the frequency hopping data itself of the frequency hopping data.

In this embodiment, although the pseudorandom frequency hopping sequence is regularly circulated, the inserted true random frequency hopping sequences are different, and therefore the frequency hopping sequences used in each time slot, that is, the target frequency hopping sequences, are different, so that the regular pseudorandom frequency hopping sequences exhibit random characteristics that are not regularly known in the presence of an attacker, the attacker cannot find out the frequency hopping rule of a future time slot from the frequency hopping condition of the past time slot, and cannot accurately track and intercept useful frequency hopping, and further the possibility that useful data is tracked and intercepted is greatly reduced.

In some embodiments, the sequence selection decision module 13 is further configured to: and acquiring a safety parameter and/or a power consumption parameter, and acquiring the frequency hopping number of the real random frequency hopping sequence according to the safety parameter and/or the power consumption parameter.

It should be noted that, because the inserted true random frequency hopping sequence increases the system power consumption to a certain extent, for example, the more the frequency hopping number of the inserted true random frequency hopping sequence is, the more the system power consumption is increased, otherwise, the less the system power consumption is increased, and meanwhile, the frequency hopping number of the inserted true random frequency hopping sequence has a certain relationship with the system security performance, for example, the more the frequency hopping number of the inserted true random frequency hopping sequence is, the higher the system security is, otherwise, the lower the system security is, the frequency hopping number of the inserted true random frequency hopping sequence is also determined based on the system security requirement and the system power consumption requirement in the present invention.

Specifically, the sequence selection decision module 13 obtains a security parameter and/or a power consumption parameter, and obtains the frequency hopping number of the true random frequency hopping sequence according to the security parameter and/or the power consumption parameter. In specific implementation, for an application occasion with extremely low requirement on system power consumption, the system power consumption requirement can be ignored, and at the moment, the frequency hopping number of the real random frequency hopping sequence is directly determined according to the system safety requirement, namely the frequency hopping number of the real random frequency hopping sequence is obtained according to the safety parameters; for an application occasion with extremely low system safety requirement, the system safety requirement can be ignored, and the frequency hopping number of the real random frequency hopping sequence is directly determined according to the system power consumption requirement, namely the frequency hopping number of the real random frequency hopping sequence is obtained according to the power consumption parameter; for an application occasion with certain requirements on system safety and system power consumption, the frequency hopping number of the real random frequency hopping sequence can be determined according to the system power consumption requirement and the system safety requirement, namely the frequency hopping number of the real random frequency hopping sequence is obtained according to the safety parameter and the power consumption parameter.

Therefore, the frequency hopping number of the inserted real random frequency hopping sequence is determined according to at least one of the safety parameter and the power consumption parameter, so that the safety of data communication can be effectively improved under the participation of the inserted real random frequency hopping sequence, and the specific system safety and power consumption requirements can be met, thereby meeting different application occasions.

Further, as a first example, the sequence selection decision module 13 is specifically configured to: and acquiring an application scene, and acquiring the frequency hopping number from a preset database according to the application scene, wherein the application scene is in a corresponding relation with the safety parameter and/or the power consumption parameter. Further, optionally, a value range of the frequency hopping number is stored in the preset database, and the sequence selection decision module 13 is specifically configured to: randomly selecting a number from the range of the number of hopping frequencies as the hopping number.

Specifically, the recommended value of the frequency of the skip may be given in advance for different security parameters and/or power consumption parameters, and then stored in the database in the form of a table, and the recommended value may be obtained by looking up the table in practical application. It should be noted that, in general, the application scenario determines the security parameter and the power consumption parameter, for example, in a military-level secure communication application scenario, the security level is the highest, i.e., the third level, but the power consumption requirement is not high, while in an important industrial-level communication application scenario, the security level is the second level, and the power consumption requirement is increased relative to the military-level secure communication application scenario, so that in specific implementation, the recommended value of the frequency hopping number may be directly given for different application scenarios, and stored in the database in a form of a table, and in use, the sequence selection decision module 13 may be directly obtained by searching from a preset database according to the application scenario. In addition, it should be noted that the recommended value of the frequency hopping number may be a specific value or a specific range, when the recommended value is a specific value, the sequence selection decision module 13 obtains a determined value based on the current application scenario, where the determined value is the frequency hopping number of the real random frequency hopping sequence that needs to be inserted, and when the recommended value is a specific range, the sequence selection decision module 13 obtains a determined value range based on the current application scenario, and after obtaining a corresponding value range according to the current application scenario, randomly selects a value from the value range as the frequency hopping number of the inserted real random frequency hopping sequence.

For example, table 1 gives recommended values of the number of hops corresponding to different application scenarios, in this example, the recommended value of the number of hops is a value range of the number of hops, for example, the value range of the number of hops corresponding to the military-level secure communication application scenario is an integer greater than 10, the value range of the number of hops corresponding to the important industrial-level communication application scenario is an integer between 6 and 10, and the like. Meanwhile, table 1 also shows the security level that can be achieved by each application scenario before and after the true random frequency hopping sequence is inserted, for example, the military-level confidential communication application scenario is increased from the third level to the fifth level, the security increase percentage reaches 67%, the important industrial-level communication application scenario is increased from the second level to the fourth level, and the security increase percentage reaches 100%, so that after the true random frequency hopping sequence is inserted, the security of each application scenario is obviously improved.

TABLE 1

Application scenarios	Without inserting true random frequency hopping sequences Level of security achievable before the train	Recommendation of frequency hopping Value (integer)	Inserting true random frequency hopping sequences The safety level achieved later	Safety lifting percentage Ratio of	Field of application
						Military grade protector Secret communication	Third stage	>10	Fifth stage	67%	Military, aerospace, Finance, etc
Important industries Level communication	Second stage	6~10	Fourth stage	100%	Heavy industry and nuclear power Production and the like
						General industry Level communication	Second stage	6~10	Fourth stage	100%	Light industry and city Traffic, etc
Important civil use Communication	Second stage	3~5	Third stage	50%	Hospital and education machine Structure and the like
						Common civil use Communication	Second stage	3~5	Third stage	50%	Common medicine for personal use Fee electronic

Therefore, the frequency hopping number of the inserted real random frequency hopping sequence can be obtained through a table look-up mode based on the application scene, the value range of the corresponding frequency hopping number is determined according to the application scene, and then a value is randomly selected from the value range to serve as the frequency hopping number of the inserted real random frequency hopping sequence, so that the randomness of the target frequency hopping sequence can be further improved.

As a second example, the sequence selection decision module 13 is specifically configured to: and acquiring a safety level demand value and a power consumption level demand value, acquiring a safety level weight and a power consumption level weight, weighting, summing and rounding according to the safety level demand value, the power consumption level demand value, the safety level weight and the power consumption level weight to acquire the frequency hopping number. Further, optionally, the sequence selection decision module 13 is specifically configured to: randomly selecting one weight from the preset safety level weight range as a safety level weight, and randomly selecting one weight from the preset power consumption level weight range as a power consumption level weight.

Specifically, when the application scenario cannot be obtained in advance, the sequence selection decision module 13 may calculate the hop number of the inserted true random hop sequence by the following formula (1):

n=f(L_security,L_power)=[α₁*L_security + α₂*L_power],α₁∈[a_s,b_s],α₂∈[a_p,b_p] （1）

wherein n is the hopping number of the inserted true random hopping sequence; [ alpha ] to₁*L_security+α₂*L_power]Means not exceeding alpha₁*L_security+α₂*L_powerThe largest integer of (a); l is_securityA value (which is an integer) is required for the security level, for example, a value of {6,7,8,9,10 }; l is_powerA value (which is an integer) required for the power consumption level, for example, a value of {1,2,3,4,5 }; alpha is alpha₁Is a security level weight, which is a preset security level weight range [ a ]_s,b_s]Random value of inner, in general, a_sTake 0, b_sTaking 1; alpha is alpha₂Is a power consumption level weight which is a preset power consumption level weight range [ a_p,b_p]Random value of inner, in general, a_pTake 0, b _p1 is taken. For example, in the military, the highest level of security, L_securityValue of 10, alpha₁Value of 1, low power consumption requirement, L_powerValue of 1, alpha₂Value is 0, so n = 10; in the important civil field, the second level of safety, L_securityValue of 7, alpha₁The value is 0.8, the power consumption requirement is high, and L_powerTake a value of2，α₂The value is 0.2, so n = 6.

In the example shown in formula (1), α is₁For a preset security level weight range [ a ]_s,b_s]Random value of, α₂For a predetermined power consumption level weight range [ a ]_p,b_p]Random value of, and in other examples a₁And alpha₂The value may also be a predetermined determined value, and is not limited herein.

Therefore, under the condition that the hop frequency number of the inserted real random hop sequence cannot be determined according to the application scene, the hop frequency number of the inserted real random hop sequence can be calculated and obtained through a random hop frequency number calculation formula, and the randomness of the target hop sequence can be further improved through randomly selecting the security level weight and the power consumption level weight.

It should be noted that, in the present invention, the generation manner of the true random hopping sequence may include two manners: one is direct generation and the other is generated by randomizing the generated pseudo-random hopping sequence.

As a first example, referring to fig. 4, the true random sequence generation module 12 includes: the true random sequence generator 121 is configured to generate an initial true random frequency hopping sequence, and the sequence selection decision module 13 is further configured to obtain the frequency hopping data of the frequency hopping from the initial true random frequency hopping sequence to form the true random frequency hopping sequence.

Specifically, the true random sequence generator 121 may generate an initial true random frequency hopping sequence, where the initial true random frequency hopping sequence includes multiple frequency hopping data, and then the sequence selection decision module 13 obtains, in the current time slot, the frequency hopping number of the inserted true random frequency hopping sequence according to the security parameter and/or the power consumption parameter, and randomly obtains the frequency hopping number of the frequency hopping number from the initial true random frequency hopping sequence, so as to form the true random frequency hopping sequence. It should be noted that, in the current time slot, when the hopping number of the pseudo-random hopping sequence is greater than 2, the true random hopping sequences inserted between the hopping data of every two adjacent pseudo-random hopping sequences may be the same or different, and the specific details are not limited herein.

Further, in the example shown in fig. 4, the sequence selection decision module 13 is further configured to: and when the target frequency hopping sequence corresponding to the current time slot is determined to be used, updating one or more real random frequency hopping sequences in the target frequency hopping sequence to generate a new target frequency hopping sequence. Optionally, the updating includes at least one of adjusting a position, increasing or decreasing data, and updating data of the frequency hopping data in the true random frequency hopping sequence.

Specifically, in the current time slot, when the sequence selection decision module 13 obtains the frequency hopping number of the inserted true random frequency hopping sequence according to the security parameter and/or the power consumption parameter, and randomly obtains the frequency hopping number of the frequency hopping number from the initial true random frequency hopping sequence to form a true random frequency hopping sequence, and inserts the true random frequency hopping sequence into the pseudo random frequency hopping sequence to form a target frequency hopping sequence of the current time slot, it is further determined whether the target frequency hopping sequence has been used before, and if the target frequency hopping sequence has been used, the inserted true random frequency hopping sequence is updated, for example, the position of the frequency hopping data of the inserted true random frequency hopping sequence is adjusted, the frequency hopping data is increased or decreased (the range of the frequency hopping number corresponding to the security parameter and/or the power consumption parameter is not exceeded), or the frequency hopping data therein is replaced, etc., and the generated target frequency hopping sequence is updated so as to further improve the randomness of the target frequency hopping sequence and further improve the safety of data communication.

In the embodiment, the real random frequency hopping sequence is inserted into the pseudo random frequency hopping sequence, so that the formed target frequency hopping sequence is irregular and can be circulated, the safety of data communication is effectively improved, and the formed target frequency hopping sequence has uniqueness, so that the difficulty of attack and interception is greatly improved, the safety of data communication is greatly improved, and the method is particularly suitable for application occasions with extremely high requirements on safety.

As a second example, referring to fig. 5, the true random sequence generation module 12 includes: and a sequence randomizing unit 122, configured to randomize, according to the hopping number, part of the hopping data in the generated pseudo-random hopping sequence to form a true random hopping sequence. Optionally, the randomization process includes at least one of random ordering, random decimation, and random interpolation.

Specifically, between every two adjacent hopping data of the pseudo random hopping sequence, the sequence selection decision module 13 will obtain the hopping numbers of the inserted true random hopping sequence according to the security parameter and/or the power consumption parameter, then, the hop count is sent to the sequence randomizing unit 122 and the sequence randomizing unit 122 is started, at this time, the sequence randomizing unit 122 randomizes part of the hop data in the generated pseudo-random hop sequence according to the received hop count to form a real random hop sequence, for example, the sequence randomizing unit 122 stores the hopping data of the most recent pseudo random hopping sequence, after receiving the hopping number, randomly ordering, randomly extracting or randomly interpolating the hopping data of the nearest pseudo-random hopping sequence according to the hopping number to generate an inserted real random hopping sequence. It should be noted that, when it is not necessary to insert a true random frequency hopping sequence, the sequence selection decision module 13 will turn off the sequence randomization unit 122, and at this time, the sequence randomization unit 122 does not perform any processing on the pseudo random frequency hopping sequence output by the pseudo random frequency hopping generation module 11.

That is to say, the sequence selection decision module 13 controls the sequence randomizing unit 122 to be turned on and off, wherein, when turned off, the sequence randomizing unit 122 does not perform any processing on the pseudo-random frequency hopping sequence, that is, does not insert the true random frequency hopping sequence, and when turned on, randomizes the stored frequency hopping data of the latest several pseudo-random frequency hopping sequences according to the frequency hopping number of the true random frequency hopping sequence to be inserted, which is acquired by the sequence selection decision module 13, between every two adjacent frequency hopping data of the pseudo-random frequency hopping sequence, so as to generate the true random frequency hopping sequence, thereby realizing the insertion of the randomly generated true random frequency hopping sequence between every two adjacent frequency hopping data of the pseudo-random frequency hopping sequence.

Further, in the example shown in fig. 5, the sequence selection decision module 13 is further configured to: and when the target frequency hopping sequence corresponding to the current time slot is determined to be used, updating one or more real random frequency hopping sequences in the target frequency hopping sequence to generate a new target frequency hopping sequence. Optionally, the updating includes at least one of adjusting a position, increasing or decreasing data, and updating data of the frequency hopping data in the true random frequency hopping sequence.

In particular, in the current time slot, the sequence selection decision module 13 also inserts the true random hopping sequence formed by the sequence randomization unit 122 into the pseudo random hopping sequence, to form a target hopping sequence of the current time slot, and determine whether the target hopping sequence has been used before, if so, the inserted true random hopping sequence (i.e., the true random hopping sequence formed by the sequence randomizing unit 122) is updated, for example, the position of the hopping data of the inserted true random hopping sequence is adjusted, the hopping data is increased or decreased (not exceeding the value range of the hopping numbers corresponding to the security parameters and/or the power consumption parameters), or the frequency hopping data in the target frequency hopping sequence is replaced, and the generated target frequency hopping sequence is updated, so that the randomness of the target frequency hopping sequence is further improved, and the safety of data communication is further improved.

In the embodiment, the true random frequency hopping sequence is inserted into the pseudo random frequency hopping sequence, so that the formed target frequency hopping sequence is irregular and can be circulated, and the safety of data communication is effectively improved.

In some embodiments, as shown with reference to fig. 4 and 5, the frequency hopping communication device further includes: and the frequency hopping sequence management module 15 is configured to obtain a reception error rate of the data, and update the pseudorandom frequency hopping sequence according to the reception error rate.

Specifically, the hopping sequence management module 15 further obtains a reception error rate (or packet error rate) sent by the receiver, where the error rate is detected by an error rate detection module in the receiver, and updates the pseudo-random hopping sequence according to the reception error rate, for example, a low-quality communication channel is removed, so as to implement closed-loop control of the pseudo-random hopping sequence and ensure the quality of data communication.

It should be noted that the hopping sequence management module 15 may be disposed in the transmitter, or may be disposed in the receiver, or may be disposed in the host, for example, when the transmitter is the host, the hopping sequence management module 15 may be disposed in the transmitter, and when the receiver is the host, the hopping sequence management module 15 may be disposed in the receiver.

In some embodiments, as shown with reference to fig. 4 or 5, the transmission module 14 includes: a frequency selection unit 141, configured to determine a hopping frequency corresponding to the target hopping sequence; and a data transmitting unit 142 for transmitting data according to the hopping frequency.

It should be noted that, the hopping frequencies correspond to the hopping data one to one, so after obtaining the target hopping sequence, the frequency selecting unit 141 can obtain the hopping frequency corresponding to the target hopping sequence according to the predetermined corresponding relationship, and send the determined hopping frequency to the data transmitting unit 142, and the data transmitting unit 142 transmits the data according to the hopping frequency.

Further, referring to fig. 4 or fig. 5, the transmitting module 14 further includes: the data selecting unit 143 and the data modulating unit 144, where the data selecting unit 143 is configured to output the useful data to the data modulating unit 144 for modulation when the hopping frequency is the hopping frequency corresponding to the pseudorandom hopping sequence, so that the data transmitting unit 142 transmits the modulated data of the useful data according to the hopping frequency; the data selecting unit 143 is further configured to output the interference data to the data modulating unit 144 for modulation when the hopping frequency is the hopping frequency corresponding to the true random hopping sequence, so that the data transmitting unit 142 transmits the modulation data of the interference data according to the hopping frequency. The data modulation unit 144 modulates the useful data and the interference data in the same modulation manner.

Specifically, the sequence selection decision module 13 is further configured to control the data selection unit 143 to select and output the useful data and the interference data, so that the useful data is transmitted through a hopping frequency corresponding to the pseudo-random hopping sequence, and the interference data is transmitted through a hopping frequency corresponding to the true random hopping sequence. Specifically, when the sequence selection decision module 13 determines that the hopping data of the pseudo-random hopping sequence is currently used, a useful control signal is sent to the data selection unit 143, at this time, the data selection unit 143 opens a useful data stream, closes an interference data stream (such as a random data stream), and at this time, a useful signal is sent, so that the useful data flows into the data modulation unit 144, the data modulation unit 144 performs modulation to generate a modulation signal of the useful data, and the modulation signal is sent to the receiver through the data sending unit 142; when the sequence selection decision module 13 determines that the hopping data of the true random hopping sequence is currently used, it sends an interference control signal to the data selection unit 143, at this time, the data selection unit 143 closes the useful data stream, opens an interference data stream (such as a random data stream) so that the interference data flows into the data modulation unit 144, the data modulation unit 144 modulates the interference data to generate a modulation signal of the interference data, and the modulation signal is transmitted to the receiver through the data transmission unit 142, so that the useful data and the interference data alternately appear on the transmission signal.

When modulating the useful data and the interference data, the data modulation unit 144 may adopt the same modulation method, so that the useful signal and the interference signal obtained after modulation have the same spectral characteristics, thereby further improving the security of data communication.

In order to make the present invention more clear to those skilled in the art, the whole data communication process will be described in detail below with reference to fig. 4 and 5.

Referring to fig. 4, in the transmitter, the wireless communication apparatus may include: the pseudo-random sequence generating module 11, the true random sequence generating module 12, the sequence selection decision module 13, the transmitting module 14, and the hopping sequence management module 15, wherein the true random sequence generating module 12 includes a true random sequence generator 121, the transmitting module 14 includes a frequency selecting unit 141, a data transmitting unit 142, a data selecting unit 143, and a data modulating unit 144, and the data transmitting unit 142 may further include a frequency generator 1421, a synthesizing subunit 1422, a digital filter 1423, a radio frequency transmitting subunit 1424, and a transmitting antenna 1425. The receiver may include: the pseudo-random sequence generation module 21, the bit error rate detection module 22, and the receiving module 23, the receiving module 23 includes a frequency selection unit 231, a data receiving unit 232, and a data demodulation unit 233, and the data receiving unit 232 further includes a frequency synthesizer 2321, a separation subunit 2322, a digital filter 2323, a radio frequency receiving subunit 2324, and a receiving antenna 2325.

During data communication, the pseudo-random sequence generation module 11 generates a pseudo-random frequency hopping sequence, the pseudo-random frequency hopping sequence is synchronized between a transmitter and a receiver through a professional channel, and the real random sequence generator 121 generates an initial real random frequency hopping sequence. The sequence selection decision module 13 obtains the hopping data of the pseudo random hopping sequence corresponding to the current timeslot in the current timeslot of data transmission, which is assumed as W1, W3 and W2, and simultaneously obtains the current security parameter and/or power consumption parameter, and obtains the hopping number of the true random hopping sequence to be inserted according to the current security parameter and/or power consumption parameter, for example, the obtained hopping number of the true random hopping sequence inserted between W1 and W3 is 3, and the hopping number of the true random hopping sequence inserted between W3 and W2 is 2, at this time, the sequence selection decision module 13 further randomly selects 3 hopping data, such as the hopping data Z1, Z3 and Z2, from the initial true random hopping sequence to form the true random sequence ZA inserted between W1 and W3, and randomly selects 2 hopping data from the initial true random sequence, such as frequency hopping data Z5 and Z4, to form a true random frequency hopping sequence ZB inserted between W3 and W2, and finally to form a target frequency hopping sequence as shown in fig. 3. Next, the sequence selection decision module 13 determines whether the target frequency hopping sequence has been used, and if so, updates the target frequency hopping sequence, otherwise, keeps unchanged.

Then, the sequence selection decision module 13 gradually sends the hopping frequency data of the target hopping frequency sequence to the frequency selection unit 141, the frequency selection unit 141 obtains the hopping frequency corresponding to the hopping frequency data, and sends the hopping frequency to the frequency generator 1421, and the frequency generator 1421 generates a corresponding carrier and outputs the carrier to the synthesis subunit 1422; meanwhile, the sequence selection decision module 13 further sends a useful control signal to the data selection unit 143 when the frequency hopping data is the frequency hopping data of the pseudo-random frequency hopping sequence, the data selection unit 143 inputs the useful data to the data modulation unit 144 when receiving the useful control signal, the data modulation unit 144 generates the useful signal after modulation and transmits the useful signal to the synthesis subunit 1422, and when the frequency hopping data is the frequency hopping data of the true random frequency hopping sequence, the sequence selection decision module 13 sends an interference control signal to the data selection unit 143, the data selection unit 143 inputs the interference data to the data modulation unit 144 when receiving the interference control signal, and the data modulation unit 144 generates the interference signal after modulation and transmits the interference signal to the synthesis subunit 1422. The synthesis subunit 1422 loads a useful signal on a carrier of a hopping frequency corresponding to the pseudo-random hopping sequence, or loads an interference signal on a carrier of a hopping frequency corresponding to the true random hopping sequence, and sends the loaded signal to the digital filter 1423, and after filtering processing by the digital filter 1423, the signal is transmitted to a receiver through the radio frequency transmission subunit 1424 and the transmitting antenna 1425 in sequence.

After receiving the signal transmitted by the transmitter sequentially through the receiving antenna 2325 and the radio frequency receiving subunit 2324, the receiver sends the received signal to the digital filter 2323, and outputs the signal to the separating subunit 2322 after performing filtering processing by the digital filter 2323; meanwhile, the pseudo-random sequence generation module 21 generates a pseudo-random frequency hopping sequence identical to that of the transmitter, sends frequency hopping data of the pseudo-random frequency hopping sequence to the frequency selection unit 231, obtains a frequency hopping frequency corresponding to the frequency hopping sequence by the frequency selection unit 231, sends the frequency hopping frequency to the frequency synthesizer 2321, outputs a corresponding carrier to the separation subunit 2322 by the frequency synthesizer 2321, separates a useful signal in the signal based on the carrier of the frequency hopping frequency corresponding to the pseudo-random frequency hopping sequence by the separation subunit 2322, and outputs the useful signal to the data demodulation unit 233, and obtains the useful data after the demodulation by the data demodulation unit 233. The ber detection module 22 also obtains the ber of received useful data and sends it to the hop sequence management module 15, and the hop sequence management module 15 updates the pseudo-random hop sequences in the transmitter and receiver.

In the example, the data is transmitted alternately by utilizing the pseudo-random frequency hopping sequence and the real random frequency hopping sequence, and the alternate frequency is determined according to the security parameter and/or the power consumption parameter, so that the security of data communication is effectively improved, the flexibility is strong, the method can be suitable for different application occasions, and the target frequency hopping sequence generated alternately by utilizing the pseudo-random frequency hopping sequence and the real random frequency hopping sequence has uniqueness, so that the security of data communication is greatly improved, and the difficulty of a receiver for receiving useful signals is not increased.

Referring to fig. 5, in the transmitter, the wireless communication apparatus may include: the pseudo-random sequence generating module 11, the real random sequence generating module 12, the sequence selection decision module 13, the transmitting module 14 and the frequency hopping sequence management module 15, wherein the real random sequence generating module 12 includes a sequence randomizing unit 122, the transmitting module 14 includes a frequency selecting unit 141, a data transmitting unit 142, a data selecting unit 143 and a data modulating unit 144, and the data transmitting unit 142 may further include a frequency generator 1421, a synthesizing subunit 1422, a digital filter 1423, a radio frequency transmitting subunit 1424 and a transmitting antenna 1425. The receiver may include: the pseudo-random sequence generation module 21, the bit error rate detection module 22, and the receiving module 23, the receiving module 23 includes a frequency selection unit 231, a data receiving unit 232, and a data demodulation unit 233, and the data receiving unit 232 further includes a frequency synthesizer 2321, a separation subunit 2322, a digital filter 2323, a radio frequency receiving subunit 2324, and a receiving antenna 2325.

In data communication, the pseudo-random sequence generation module 11 generates a pseudo-random frequency hopping sequence that maintains synchronization between a transmitter and a receiver through a professional channel. The sequence selection decision module 13 obtains a current security parameter and/or power consumption parameter in a current time slot of data transmission, obtains a frequency hopping number of a true random frequency hopping sequence to be inserted according to the current security parameter and/or power consumption parameter, for example, the obtained frequency hopping number is 3, then sends the obtained frequency hopping number between two adjacent frequency hopping data of the pseudo random frequency hopping sequence to the sequence randomizing unit 122, and starts the sequence randomizing unit 122 to generate the true random frequency hopping sequence according to the frequency hopping number and output the true random frequency hopping sequence to the frequency selection unit 141, so as to insert the true random frequency hopping sequence between the two adjacent frequency hopping data of the pseudo random frequency hopping sequence; meanwhile, the sequence selection decision module 13 also tracks the security parameter and/or the power consumption parameter in real time to adjust the frequency hopping number of the real random frequency hopping sequence to be inserted in real time.

Then, the frequency selection unit 141 obtains the frequency hopping frequency corresponding to the frequency hopping data, and sends the frequency hopping frequency to the frequency generator 1421, and the frequency generator 1421 generates a corresponding carrier and outputs the carrier to the synthesis subunit 1422; meanwhile, the sequence selection decision module 13 further sends a useful control signal to the data selection unit 143 when the frequency hopping data is the frequency hopping data of the pseudo-random frequency hopping sequence, the data selection unit 143 inputs the useful data to the data modulation unit 144 when receiving the useful control signal, the data modulation unit 144 generates the useful signal after modulation and transmits the useful signal to the synthesis subunit 1422, and when the frequency hopping data is the frequency hopping data of the true random frequency hopping sequence, the sequence selection decision module 13 sends an interference control signal to the data selection unit 143, the data selection unit 143 inputs the interference data to the data modulation unit 144 when receiving the interference control signal, and the data modulation unit 144 generates the interference signal after modulation and transmits the interference signal to the synthesis subunit 1422. The synthesis subunit 1422 loads a useful signal on a carrier of a hopping frequency corresponding to the pseudo-random hopping sequence, or loads an interference signal on a carrier of a hopping frequency corresponding to the true random hopping sequence, and sends the loaded signal to the digital filter 1423, and after filtering processing by the digital filter 1423, the signal is transmitted to a receiver through the radio frequency transmission subunit 1424 and the transmitting antenna 1425 in sequence.

In the example, the data is transmitted alternately by using the pseudo-random frequency hopping sequence and the real random frequency hopping sequence, and the alternate frequency is determined according to the security parameter and/or the power consumption parameter, so that the security of data communication is effectively improved, the flexibility is strong, the method and the device can be applied to different application occasions, and meanwhile, the difficulty of the receiver for receiving useful signals is not increased.

In summary, the frequency hopping communication device according to the embodiment of the present invention generates the target frequency hopping sequence by using the pseudo random frequency hopping sequence and the real random frequency hopping sequence, and hides the pseudo random frequency hopping sequence therein, so that the frequency hopping control effect of the real random frequency hopping sequence is approached as a whole, and further an attacker feels that the frequency hopping is irregular and the frequency hopping between the time slots does not have correlation, so that the difficulty of being attacked and intercepted is greatly improved, the security of data communication is greatly improved, and the frequency hopping communication device is particularly suitable for an application occasion with a high security requirement; meanwhile, the invention has greater flexibility when generating the target frequency hopping sequence, and the target frequency hopping sequence determines the communication safety to a certain extent, so the invention has great flexibility in the aspect of safety performance; meanwhile, although the communication scheme of the transmitter side is improved and the pseudo-random frequency hopping sequence negotiated by the transmitter and the receiver is modified, the difficulty of receiving signals by the receiver is not increased, and the receiver cannot process signals based on the frequency hopping frequency corresponding to the inserted real random frequency hopping sequence. In addition, although the invention can increase the transmission power consumption and the whole complexity of the transmitter to a certain extent, the invention is an effective scheme in some occasions with higher safety requirements, especially in short-distance micro-power communication scenes, because the transmission power consumption is not high, and the transmitter is in a dormant state in most of time, the increase of the frequency hopping frequency of the transmitter is not obvious on the whole absolute power consumption.

In some embodiments of the present invention, there is also provided a transmitter comprising the aforementioned frequency hopping communication device.

Fig. 6 is a flowchart illustrating a frequency hopping communication method according to an embodiment of the present invention, which is described by taking the application of the frequency hopping communication method to the transmitter in fig. 1 as an example, and referring to fig. 6, the frequency hopping communication method may include the following steps:

step S101, generating a pseudo-random frequency hopping sequence and a real random frequency hopping sequence, wherein the pseudo-random frequency hopping sequence keeps synchronization between a transmitter and a receiver.

And S102, inserting a real random frequency hopping sequence into the pseudo random frequency hopping sequence to generate a target frequency hopping sequence.

And step S103, transmitting data according to the target frequency hopping sequence.

It should be noted that, for the description of the frequency hopping communication method in the present application, please refer to the description of the frequency hopping communication apparatus in the present application, and details are not repeated here.

In some embodiments of the present invention, there is also provided a computer-readable storage medium having stored thereon a frequency hopping communication program which, when executed by a processor, implements the aforementioned frequency hopping communication method.

In some embodiments of the present invention, there is also provided a frequency hopping communication chip, including: the frequency hopping communication method comprises a memory, a processor and a frequency hopping communication program which is stored on the memory and can run on the processor, wherein when the processor executes the program, the frequency hopping communication method is realized.

It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A frequency hopping communications apparatus, for use with a transmitter, the apparatus comprising:

a pseudo-random sequence generation module for generating a pseudo-random frequency hopping sequence, wherein the pseudo-random frequency hopping sequence keeps synchronization between the transmitter and the receiver;

the real random sequence generation module is used for generating a real random frequency hopping sequence;

a sequence selection decision module for inserting the true random frequency hopping sequence in the pseudo random frequency hopping sequence to generate a target frequency hopping sequence;

and the transmitting module is used for transmitting data according to the target frequency hopping sequence.

2. The frequency hopping communications device of claim 1, wherein the sequence selection decision module is specifically configured to: and inserting the real random frequency hopping sequence between any frequency hopping data of the pseudo random frequency hopping sequence corresponding to the current time slot to generate the target frequency hopping sequence.

3. The frequency hopping communications device of claim 1, wherein the sequence selection decision module is specifically configured to: and inserting the real random frequency hopping sequence between every two adjacent frequency hopping data of the pseudo random frequency hopping sequence corresponding to the current time slot to generate the target frequency hopping sequence.

4. The frequency hopping communications device of claim 1, wherein the sequence selection decision module is further configured to: and acquiring the random number of the hopping frequencies of the real random hopping frequency sequence.

5. The frequency hopping communications device of claim 1, wherein the sequence selection decision module is further configured to: and acquiring a safety parameter and/or a power consumption parameter, and acquiring the frequency hopping number of the real random frequency hopping sequence according to the safety parameter and/or the power consumption parameter.

6. The frequency hopping communications device of claim 5, wherein the sequence selection decision module is specifically configured to: and acquiring an application scene, and acquiring the frequency hopping number from a preset database according to the application scene, wherein the application scene is in a corresponding relation with the safety parameter and/or the power consumption parameter.

7. The apparatus according to claim 6, wherein the preset database stores a value range of the hop count, and the sequence selection decision module is specifically configured to: and randomly selecting a number from the value range of the frequency hopping number as the frequency hopping number.

8. The frequency hopping communications device of claim 5, wherein the sequence selection decision module is specifically configured to: and acquiring a safety level demand value and a power consumption level demand value, acquiring a safety level weight and a power consumption level weight, and weighting, summing and rounding according to the safety level demand value, the power consumption level demand value, the safety level weight and the power consumption level weight to acquire the frequency hopping number.

9. The frequency hopping communications device of claim 8, wherein the sequence selection decision module is specifically configured to: randomly selecting a weight from a preset safety level weight range as the safety level weight, and randomly selecting a weight from a preset power consumption level weight range as the power consumption level weight.

10. The frequency hopping communications device of any one of claims 4 to 9, wherein said true random sequence generating module comprises: and the sequence selection decision module is also used for acquiring the hop data of the hop count from the initial real random hop sequence to form the real random hop sequence.

11. The frequency hopping communications device of claim 2, wherein the sequence selection decision module is further configured to: and when the target frequency hopping sequence corresponding to the current time slot is determined to be used, updating one or more real random frequency hopping sequences in the target frequency hopping sequence to generate a new target frequency hopping sequence.

12. The frequency hopping communications device of claim 11, wherein the updating comprises at least one of location adjustment, data increase and decrease, and data update of the hop data in the true random hopping sequence.

13. The frequency hopping communications device of any one of claims 4 to 9, wherein said true random sequence generating module comprises: and the sequence randomization unit is used for randomizing part of frequency hopping data in the generated pseudo-random frequency hopping sequence according to the frequency hopping number so as to form the real random frequency hopping sequence.

14. The frequency hopping communications device of claim 13, wherein said randomization process comprises at least one of random ordering, random decimation and random interpolation.

15. The frequency hopping communications device of claim 1, further comprising: and the frequency hopping sequence management module is used for acquiring the receiving error rate of the data and updating the pseudo-random frequency hopping sequence according to the receiving error rate.

16. The frequency hopping communications device of claim 1, wherein said transmitting module comprises:

the frequency selection unit is used for determining the frequency hopping frequency corresponding to the target frequency hopping sequence;

and the data transmitting unit is used for transmitting the data according to the frequency hopping frequency.

17. The frequency hopping communications device of claim 16, wherein said transmitting module further comprises: a data selection unit and a data modulation unit,

the data selection unit is configured to output useful data to the data modulation unit for modulation when the frequency hopping frequency is a frequency hopping frequency corresponding to the pseudorandom frequency hopping sequence, so that the data transmission unit transmits the modulation data of the useful data according to the frequency hopping frequency;

the data selecting unit is further configured to output interference data to the data modulating unit for modulation when the hopping frequency is a hopping frequency corresponding to the true random hopping sequence, so that the data transmitting unit transmits the modulation data of the interference data according to the hopping frequency.

18. The apparatus according to claim 17, wherein the data modulation unit modulates the useful data and the interference data in the same modulation scheme.

19. A transmitter, characterized in that it comprises a frequency hopping communications device according to any one of claims 1 to 18.

20. A frequency hopping communications method, applied to a transmitter, the method comprising:

generating a pseudo-random frequency hopping sequence and a true random frequency hopping sequence, the pseudo-random frequency hopping sequence being synchronized between the transmitter and the receiver;

inserting the true random frequency hopping sequence into the pseudo random frequency hopping sequence to generate a target frequency hopping sequence;

and transmitting data according to the target frequency hopping sequence.

21. The frequency hopping communication method of claim 20, wherein the inserting the true random hopping sequence in the pseudo random hopping sequence to generate a target hopping sequence comprises:

and inserting the real random frequency hopping sequence between any frequency hopping data of the pseudo random frequency hopping sequence corresponding to the current time slot to generate the target frequency hopping sequence.

22. The frequency hopping communication method of claim 20, wherein the inserting the true random hopping sequence in the pseudo random hopping sequence to generate a target hopping sequence comprises:

and inserting the real random frequency hopping sequence between every two adjacent frequency hopping data of the pseudo random frequency hopping sequence corresponding to the current time slot to generate the target frequency hopping sequence.

23. The frequency hopping communication method of claim 20, wherein the inserting the true random hopping sequence in the pseudo random hopping sequence to generate a target hopping sequence further comprises:

and acquiring the random number of the hopping frequencies of the real random hopping frequency sequence.

24. The frequency hopping communication method of claim 20, wherein the inserting the true random hopping sequence in the pseudo random hopping sequence to generate a target hopping sequence further comprises:

acquiring a safety parameter and/or a power consumption parameter;

and acquiring the frequency hopping number of the real random frequency hopping sequence according to the safety parameter and/or the power consumption parameter.

25. The method according to claim 24, wherein the obtaining the hopping number of the true random hopping sequence according to the security parameter and/or the power consumption parameter comprises:

acquiring an application scene, wherein the application scene is in a corresponding relation with the safety parameter and/or the power consumption parameter;

and acquiring the frequency hopping number from a preset database according to the application scene.

26. The method according to claim 25, wherein the preset database stores a value range of the frequency hopping number, and the obtaining the frequency hopping number from the preset database according to the security parameter and/or the power consumption parameter comprises:

and randomly selecting a number from the value range of the frequency hopping number as the frequency hopping number.

27. The method according to claim 24, wherein the obtaining the hopping number of the true random hopping sequence according to the security parameter and/or the power consumption parameter comprises:

acquiring a safety level requirement value and a power consumption level requirement value;

acquiring a security level weight and a power consumption level weight;

and weighting, summing and rounding according to the safety level requirement value, the power consumption level requirement value, the safety level weight and the power consumption level weight to obtain the frequency hopping number.

28. The frequency hopping communication method of claim 27, wherein the obtaining the security level weight and the power consumption level weight comprises:

randomly selecting a weight from a preset security level weight range as the security level weight;

randomly selecting one weight from a preset power consumption level weight range as the power consumption level weight.

29. The frequency hopping communication method of any one of claims 23 to 28, wherein generating a true random hopping sequence comprises:

generating an initial true random frequency hopping sequence;

and acquiring the hop data of the hop number from the initial real random frequency hopping sequence to form the real random frequency hopping sequence.

30. The frequency hopping communication method of claim 21, wherein after generating the target hopping sequence, the method further comprises:

and when the target frequency hopping sequence corresponding to the current time slot is determined to be used, updating one or more real random frequency hopping sequences in the target frequency hopping sequence to generate a new target frequency hopping sequence.

31. The frequency hopping communication method of claim 30, wherein the updating includes at least one of location adjustment, data increase and decrease, and data update of the hopping data in the true random hopping sequence.

32. The frequency hopping communication method of any one of claims 23 to 28, wherein generating a true random hopping sequence comprises:

and randomizing part of frequency hopping data in the generated pseudo-random frequency hopping sequence according to the frequency hopping number to form the real random frequency hopping sequence.

33. The frequency hopping communications method of claim 32, wherein said randomization process comprises at least one of random ordering, random decimation and random interpolation.

34. The frequency hopping communication method of claim 20, further comprising:

acquiring a receiving error rate of the data;

and updating the pseudo-random frequency hopping sequence according to the receiving error rate.

35. The frequency hopping communications method of claim 20, wherein said transmitting data according to said target hopping sequence comprises:

determining a frequency hopping frequency corresponding to the target frequency hopping sequence;

and transmitting the data according to the frequency hopping frequency.

36. The frequency hopping communications method of claim 35, wherein said transmitting said data according to said hopping frequency comprises:

when the frequency hopping frequency is the frequency hopping frequency corresponding to the pseudorandom frequency hopping sequence, transmitting modulation data of useful data according to the frequency hopping frequency;

and when the frequency hopping frequency is the frequency hopping frequency corresponding to the real random frequency hopping sequence, transmitting modulation data of interference data according to the frequency hopping frequency.

37. The method of claim 36, wherein the useful data and the interference data are modulated by the same modulation scheme to generate corresponding modulated data.

38. A computer-readable storage medium, characterized in that a frequency hopping communication program is stored thereon, which when executed by a processor implements the frequency hopping communication method according to any one of claims 20 to 37.

39. A frequency hopping communication chip, comprising: a memory, a processor and a frequency hopping communication program stored on the memory and operable on the processor, the processor when executing the program implementing the frequency hopping communication method as claimed in any one of claims 20 to 37.