WO2023159925A1 - 跳频通信装置、方法、芯片、发射机及存储介质 - Google Patents

跳频通信装置、方法、芯片、发射机及存储介质 Download PDF

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Publication number
WO2023159925A1
WO2023159925A1 PCT/CN2022/119786 CN2022119786W WO2023159925A1 WO 2023159925 A1 WO2023159925 A1 WO 2023159925A1 CN 2022119786 W CN2022119786 W CN 2022119786W WO 2023159925 A1 WO2023159925 A1 WO 2023159925A1
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frequency hopping
sequence
random
data
hopping sequence
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PCT/CN2022/119786
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English (en)
French (fr)
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赵东艳
李德建
高以杰
甘杰
赵旭
张玉冰
关媛
邵瑾
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北京智芯微电子科技有限公司
国家电网有限公司
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Publication of WO2023159925A1 publication Critical patent/WO2023159925A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
    • H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
    • H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator
    • H04L9/0668—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator producing a non-linear pseudorandom sequence

Definitions

  • the present invention relates to the technical field of wireless communication, in particular to a frequency hopping communication device, method, chip, transmitter and storage medium.
  • frequency-hopping communication technology based on pseudo-random sequence control such as Bluetooth communication
  • frequency hopping technology With the development of frequency hopping technology, the current research on adaptive frequency hopping technology is hot, such as slot adaptive frequency hopping technology, speed hopping adaptive frequency hopping technology and power consumption adaptive frequency hopping technology, etc., in the frequency hopping frequency selection
  • the control of frequency hopping rate and frequency hopping signal power consumption control is more intelligent and efficient than the existing "blind frequency hopping" technology, which greatly improves the system's anti-interference ability and security ability.
  • people have also studied multiple pseudo-random sequence frequency hopping technology, for example, using multiple optional pseudo-random sequences to control the transmission signal, and the multiple optional pseudo-random sequences correspond to different transmission time slots.
  • the current frequency hopping technology is based on the pseudo-random sequence to control the frequency hopping pattern. Since the pseudo-random sequence is not random in nature, this provides the possibility to crack the pseudo-random sequence, resulting in its security. lower. For example, with the rapid development of semiconductor technology and the continuous improvement of the speed of tracking devices, the signal tracking ability is getting stronger and stronger, but it is difficult for frequency hopping communication chips to improve the frequency hopping rate qualitatively due to factors such as cost and power consumption. , making it less and less difficult to crack the frequency hopping pattern controlled by the pseudo-random sequence.
  • a high-rate tracking device can easily crack the frequency hopping rule by tracking the frequency hopping rule of one or several time slots, and in the next time slot Accurately track frequency hopping signals, based on which attackers can apply corresponding interference signals to hinder the normal progress of communication, and can also intercept useful signals and crack useful signal data. Therefore, the current frequency hopping technology will become more and more ineffective with the development of technology. Safety, anti-interference ability will be lower and lower.
  • some special scenarios such as power distribution system, smart home door lock, etc., have higher and higher requirements for the security and anti-interference of short-distance wireless communication. Therefore, the current Frequency hopping technology will face great potential security risks in these communication applications that require extremely high information security and reliability.
  • the present invention provides a frequency hopping communication device, method, chip, transmitter and storage medium that can effectively improve the security of data communication.
  • a frequency hopping communication device applied to a transmitter, the device includes: a pseudo-random sequence generation module, used to generate a pseudo-random frequency hopping sequence, the pseudo-random frequency hopping sequence is kept synchronized between a transmitter and a receiver; a real random sequence is generated A module for generating a real random frequency hopping sequence; a sequence selection decision module for inserting a real random frequency hopping sequence into a pseudo-random frequency hopping sequence to generate a target frequency hopping sequence; a transmitting module for transmitting data according to the target frequency hopping sequence .
  • the frequency hopping communication device can effectively improve the security of data communication by inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence, and is suitable for communication occasions that require high security and reliability.
  • the sequence selection decision module is specifically configured to: insert 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.
  • the sequence selection decision module is specifically configured to: insert 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.
  • the sequence selection decision module is further configured to: obtain a frequency hopping number of a random number of real random frequency hopping sequences.
  • the sequence selection decision module is further configured to: obtain security parameters and/or power consumption parameters, and obtain the frequency hopping number of the real random frequency hopping sequence according to the security parameters and/or power consumption parameters.
  • the sequence selection decision module is specifically configured to: obtain an application scenario, and obtain the number of frequency hopping from a preset database according to the application scenario, wherein the application scenario has a corresponding relationship with a security parameter and/or a power consumption parameter.
  • the value range of the frequency hopping number is stored in the preset database, and the sequence selection decision module is specifically configured to: randomly select a number from the value range of the frequency hopping number as the frequency hopping number.
  • the sequence selection decision-making module is specifically configured to: obtain the security level requirement value and the power consumption level requirement value, and obtain the security level weight and the power consumption level weight, and according to the security level requirement value, the power consumption level requirement value, The weighted sum of the weight of the security level and the weight of the power consumption level is summed and rounded to obtain the number of frequency hopping.
  • the sequence selection decision module is specifically configured to: randomly select a weight from the preset security level weight range as the security level weight, and randomly select a weight from the preset power consumption level weight range as the power consumption Grade weight.
  • the true random sequence generation module includes: a true random sequence generator, which is used to generate an initial true random frequency hopping sequence, and the sequence selection decision module is also used to obtain the frequency hopping of the number of frequency hopping from the initial true random frequency hopping sequence data to form a true random hopping sequence.
  • the sequence selection decision module is also used for: when it is determined that the target frequency hopping sequence corresponding to the current time slot has been used, update one or more real random frequency hopping sequences in the target frequency hopping sequence to generate The new target frequency hopping sequence.
  • updating includes at least one of position adjustment, data addition and deletion, and data updating of the frequency hopping data in the real random frequency hopping sequence.
  • the real random sequence generation module includes: a sequence randomization unit, which is used to randomize part of the 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 .
  • the randomization process includes at least one of random ordering, random drawing, and random interpolation.
  • the device further includes: a frequency hopping sequence management module, configured to acquire a received bit error rate of data, and update a pseudo-random frequency hopping sequence according to the received bit error rate.
  • a frequency hopping sequence management module configured to acquire a received bit error rate of data, and update a pseudo-random frequency hopping sequence according to the received bit error rate.
  • the transmitting module includes: a frequency selection unit, configured to determine a frequency hopping frequency corresponding to the target frequency hopping sequence; and a data transmitting unit, configured to transmit data according to the frequency hopping frequency.
  • the transmitting module further includes: a data selection unit and a data modulation unit, the data selection unit is used to output useful data to the data modulation unit when the frequency hopping frequency is the frequency hopping frequency corresponding to the pseudo-random frequency hopping sequence Modulation, so that the data transmitting unit transmits the modulated data of useful data according to the frequency hopping frequency; the data selection unit is also used to output the 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 transmitting unit transmits the modulation data of the interference data according to the frequency hopping frequency.
  • the data modulation unit modulates useful data and interference data in the same modulation manner.
  • a transmitter includes the aforementioned frequency hopping communication device.
  • the transmitter of the embodiment of the present invention based on the aforementioned frequency hopping communication device, by inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence, the security of data communication can be effectively improved, and it is suitable for applications that require relatively high security and reliability. High communication occasions.
  • a frequency hopping communication method applied to a transmitter, the method includes: generating a pseudo-random frequency hopping sequence and a real random frequency hopping sequence, the pseudo-random frequency hopping sequence is synchronized between a transmitter and a receiver; Insert a real random frequency hopping sequence in to generate a target frequency hopping sequence; transmit data according to the target frequency hopping sequence.
  • the frequency hopping communication method of the embodiment of the present invention by inserting the real random frequency hopping sequence into the pseudo-random frequency hopping sequence, the security of data communication can be effectively improved, and it is suitable for communication occasions requiring high security and reliability.
  • inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence to generate the target frequency hopping sequence includes: 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 frequency sequence to generate the target frequency hopping sequence.
  • inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence to generate the target frequency hopping sequence includes: between every adjacent two frequency hopping data of the pseudo-random frequency hopping sequence corresponding to the current time slot Insert a true random hopping sequence to generate a target hopping sequence.
  • inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence to generate a target frequency hopping sequence further includes: obtaining a random number of frequency hopping numbers of the real random frequency hopping sequence.
  • inserting a real random frequency hopping sequence into a pseudo-random frequency hopping sequence to generate a target frequency hopping sequence further includes: obtaining a security parameter and/or a power consumption parameter; obtaining a real random frequency hopping sequence according to the security parameter and/or power consumption parameter The number of hops for the random hopping sequence.
  • obtaining the frequency hopping number of the real random frequency hopping sequence according to the security parameter and/or the power consumption parameter includes: obtaining an application scenario, wherein the application scenario has a corresponding relationship with the security parameter and/or the power consumption parameter; The application scenario obtains the frequency hopping number from the preset database.
  • the value range of the frequency hopping number is stored in the preset database, and the frequency hopping number is obtained from the preset database according to the security parameter and/or power consumption parameter, including: randomly selecting from the value range of the frequency hopping number A number to use as the number of hops.
  • obtaining the frequency hopping number of the real random frequency hopping sequence according to the security parameter and/or the power consumption parameter includes: obtaining a security level requirement value and a power consumption level requirement value; obtaining a security level weight and a power consumption level weight; The weighted sum of the security level requirement value, the power consumption level requirement value, the security level weight and the power consumption level weight is summed and rounded to obtain the frequency hopping number.
  • obtaining the security level weight and the power consumption level weight includes: randomly selecting a weight from a preset security level weight range as the security level weight; randomly selecting a weight from a preset power consumption level weight range to as power consumption class weight.
  • generating a real random frequency hopping sequence includes: generating an initial real random frequency hopping sequence; acquiring frequency hopping data of a frequency hopping number from the initial real random frequency hopping sequence to form a real random frequency hopping sequence.
  • the method further includes: when it is determined that the target frequency hopping sequence corresponding to the current time slot has been used out of date, performing an operation on one or more real random frequency hopping sequences in the target frequency hopping sequence updated to generate a new target frequency hopping sequence.
  • updating includes at least one of position adjustment, data addition and deletion, and data updating of the frequency hopping data in the real random frequency hopping sequence.
  • generating a real random frequency hopping sequence includes: performing randomization processing on part of the 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.
  • the randomization process includes at least one of random ordering, random drawing, and random interpolation.
  • the method further includes: acquiring a received bit error rate of the data; and updating a pseudo-random frequency hopping sequence according to the received bit error rate.
  • transmitting data according to the target frequency hopping sequence includes: determining a frequency hopping frequency corresponding to the target frequency hopping sequence; and transmitting data according to the frequency hopping frequency.
  • transmitting data according to the frequency hopping frequency includes: when the frequency hopping frequency is the frequency hopping frequency corresponding to the pseudo-random frequency hopping sequence, transmitting the modulated data of useful data according to the frequency hopping frequency; when the frequency hopping frequency is a true random When the frequency hopping frequency corresponds to the frequency hopping sequence, the modulated data of the interference data is transmitted according to the frequency hopping frequency.
  • the useful data and the interference data are modulated by the same modulation manner to generate corresponding modulated data.
  • a computer readable storage medium on which a frequency hopping communication program is stored, and when the frequency hopping communication program is executed by a processor, the foregoing frequency hopping communication method is realized.
  • the security of data communication can be effectively improved by inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence, which is suitable for security and reliability. Communication occasions with high performance requirements.
  • a frequency hopping communication chip includes: a memory, a processor, and a frequency hopping communication program stored in the memory and operable on the processor. When the processor executes the program, the foregoing frequency hopping communication method is realized.
  • the security of data communication can be effectively improved by inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence, which is suitable for security and reliability Communication occasions with higher requirements.
  • FIG. 1 is an application scenario diagram of a frequency hopping communication device according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a frequency hopping communication device according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a target frequency hopping sequence according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a transmitter and a receiver according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a transmitter and a receiver according to another embodiment of the present invention.
  • Fig. 6 is a schematic flowchart of a frequency hopping communication method according to an embodiment of the present invention.
  • the frequency hopping communication device, method, chip, transmitter and storage medium can be applied to the application environment shown in FIG. 1 .
  • wireless data communication is performed between the transmitter 1 and the receiver 2.
  • the transmitter 1 generates a pseudo-random frequency hopping sequence (the pseudo-random frequency hopping sequence is synchronized between the transmitter 1 and the receiver 2) and the real random frequency hopping sequence, inserting the real random frequency hopping sequence into the pseudo-random frequency hopping sequence to generate the target frequency hopping sequence, and transmitting data to the receiver 2 according to the target frequency hopping sequence.
  • the transmitter 1 and the receiver 2 may be related equipment in application occasions such as a communication system for power distribution, a smart home door lock, etc., which are not specifically limited here.
  • FIG. 2 is a schematic structural diagram of a frequency hopping communication device according to an embodiment of the present invention. It is illustrated by taking the frequency hopping communication device applied to the transmitter in FIG. 1 as an example.
  • the frequency hopping communication device may include : a pseudo-random sequence generation module 11 , a real random sequence generation module 12 , a sequence selection decision-making module 13 and a transmission module 14 .
  • the pseudo-random sequence generation module 11, the real random sequence generation module 12, the sequence selection decision-making module 13 and the transmitting module 14 can be one or more processes with a communication interface capable of implementing a communication protocol, respectively.
  • the processor, controller or chip may also include memory and related interfaces, system transmission bus, etc. if necessary; the processor, controller or chip executes program-related codes to realize corresponding functions.
  • an alternative solution is that the pseudo-random sequence generation module 11 , the true random sequence generation module 12 , the sequence selection decision-making module 13 and the transmitting module 14 share an integrated chip or share processors, controllers, memory and other devices.
  • the shared processor, controller or chip executes program-related codes to implement corresponding functions.
  • pseudorandom sequence generation module 11 is used for generating pseudorandom frequency hopping sequence, and pseudorandom frequency hopping sequence is kept synchronously between transmitter and receiver;
  • Real random sequence generation module 12 is used for generating real random frequency hopping sequence;
  • Sequence selection The decision module 13 is used to insert a real random frequency hopping sequence into the pseudo-random frequency hopping sequence to generate a target frequency hopping sequence;
  • the transmitting module 14 is used to transmit data according to the target frequency hopping sequence.
  • the pseudo-random sequence generation module 11 can be a pseudo-random sequence generator, etc., and is mainly used to generate a pseudo-random frequency hopping sequence, so as to transmit useful data based on the frequency hopping frequency corresponding to the pseudo-random frequency hopping sequence, and the pseudo-random frequency hopping sequence
  • the random frequency hopping sequence is kept synchronized between the transmitter and the receiver, such as negotiating the pseudo-random frequency hopping sequence through a dedicated channel, so that the transmitter and the receiver have the same pseudo-random frequency hopping sequence, which is convenient for the receiver to receive
  • the useful data is obtained based on the same pseudo-random frequency hopping sequence.
  • the real random sequence generation module 12 can specifically be a real random sequence generator, etc., which is mainly used to generate a real random frequency hopping sequence, so as to transmit interference data based on the frequency hopping frequency corresponding to the real random frequency hopping sequence, and the real random frequency hopping sequence Randomly generated, so as to participate in the frequency hopping control through the real random frequency hopping sequence, so that the outside world cannot track and obtain the pseudo-random frequency hopping sequence, thereby improving the security and reliability of data communication.
  • a real random sequence generator etc., which is mainly used to generate a real random frequency hopping sequence, so as to transmit interference data based on the frequency hopping frequency corresponding to the real random frequency hopping sequence, and the real random frequency hopping sequence Randomly generated, so as to participate in the frequency hopping control through the real random frequency hopping sequence, so that the outside world cannot track and obtain the pseudo-random frequency hopping sequence, thereby improving the security and reliability of data communication.
  • the sequence selection decision-making module 13 is connected with the pseudo-random sequence generation module 11 and the real random sequence generation module 12 respectively, and is mainly used to insert a real random frequency-hopping sequence in the pseudo-random frequency-hopping sequence to generate a target frequency-hopping sequence.
  • a randomly generated real random frequency hopping sequence is inserted between any frequency hopping data in the random frequency hopping sequence, that is, the insertion position of the real random frequency hopping sequence can be arbitrary, and the inserted real random frequency hopping sequence can be arbitrary, for example , the position of the frequency hopping data of the inserted real random frequency hopping sequence is different, the number of frequency hopping data, that is, the number of frequency hopping is different or the frequency hopping data itself is different, further, the number of frequency hopping of the real random frequency hopping sequence can be a random number Yes, the frequency hopping data itself can be random, there is no specific limit here, as long as the target frequency hopping sequence generated by inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence is irregular in the outside world That's it.
  • the generated target frequency hopping sequence Since the generated target frequency hopping sequence has no rules to follow, it appears to the outside world to be close to the real random characteristics, so that the attacker cannot obtain the pseudo-random frequency hopping sequence, and thus cannot obtain useful data based on the pseudo-random frequency hopping sequence, making the data
  • the anti-tracking and anti-interception capabilities of communication are greatly improved, which effectively solves the problem of low security caused by the use of pseudo-random frequency hopping sequences to control frequency hopping patterns, which in turn makes signals easy to be tracked and intercepted.
  • the receiver since the pseudo-random frequency hopping sequence is synchronized between the transmitter and the receiver, the receiver does not need to know the frequency hopping frequency corresponding to the real random frequency hopping sequence, but only needs to know the Which frequency hopping frequency is the useful frequency hopping frequency to send when among all the frequency hopping frequencies in the frequency hopping frequency, that is, as long as the frequency hopping pattern controlled by the pseudo-random frequency hopping sequence is known, it does not increase the difficulty of receiving by the receiver.
  • the transmitting module 14 is connected with the sequence selection decision-making module 13, and is mainly used for transmitting data according to the target frequency hopping sequence, such as first 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.
  • the frequency hopping control of the transmitted data is performed by using a combination of a pseudo-random frequency hopping sequence and a real random frequency hopping sequence, that is, a real random frequency hopping sequence is inserted into the pseudo-random frequency hopping sequence, so that the frequency hopping control is It is close to the real random characteristics, so that the anti-tracking and anti-interception capabilities of data communication are greatly improved, and it effectively solves the problem of low security caused by only using pseudo-random frequency hopping sequences to control frequency hopping patterns, which in turn makes signals easy to be tracked and intercepted. It is suitable for applications that require high security and reliability, such as communication systems for power distribution and smart home door locks. It solves the current potential security risks, especially in short-distance communication scenarios, and does not increase reception. The machine's signal reception difficulty.
  • the sequence selection decision module 13 is specifically configured to: insert 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.
  • the sequence selection decision module 13 may insert a randomly generated real random frequency hopping sequence between any frequency hopping data of the pseudo-random frequency hopping sequence to generate a target frequency hopping sequence.
  • a randomly generated real random frequency hopping sequence can be inserted at intervals of one or more frequency hopping data, and the interval frequency hopping data can be regular or irregular.
  • a randomly generated true random frequency hopping sequence may be inserted at intervals of two frequency hopping data, or a randomly generated true random frequency hopping sequence may be inserted at random intervals of one or more frequency hopping data.
  • the sequence selection decision module 13 is specifically configured to: insert 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.
  • the sequence selection decision-making module 13 may insert a randomly generated real random frequency hopping sequence between the frequency hopping data of every two adjacent pseudo-random frequency hopping sequences to generate a target frequency hopping sequence.
  • the frequency hopping data of the pseudo-random frequency hopping sequence includes frequency hopping data W1, W3 and W2.
  • the sequence selection decision module 13 inserts the real random frequency hopping sequence, it can A real random frequency hopping sequence ZA is inserted between the frequency hopping data W1 and W3 of the pseudo-random frequency hopping sequence, and a real random frequency hopping sequence ZB is inserted between the frequency hopping data W3 and W2 of the pseudo-random frequency hopping sequence.
  • the frequency hopping sequence ZA includes three frequency hopping data Z1, Z3 and Z2, and the real random frequency hopping sequence ZB includes frequency hopping data Z5 and Z4, and finally the target frequency hopping sequence shown in FIG. 3 is obtained.
  • each time slot may include frequency hopping data of one or more pseudo-random frequency hopping sequences, and the inserted real random
  • the hopping sequence may differ from this example in the hopping position of the hopping data, the number of hopping, and the hopping data itself.
  • the pseudo-random frequency hopping sequence has rules to follow, since the inserted real random frequency hopping sequence is different, the frequency hopping sequence used in each time slot, namely the target frequency hopping sequence, is different.
  • the regular pseudo-random frequency hopping sequence shows irregular random characteristics in front of the attacker, so that the attacker cannot find the frequency hopping law of the future time slot from the frequency hopping situation of the past time slot, and cannot Accurate tracking and interception of useful frequency hopping frequencies greatly reduces the possibility of useful data being tracked and intercepted.
  • the sequence selection decision module 13 is further configured to: obtain security parameters and/or power consumption parameters, and obtain the frequency hopping number of the real random frequency hopping sequence according to the security parameters and/or power consumption parameters.
  • the frequency hopping number of the inserted real random frequency hopping sequence is also determined based on system security requirements and system power consumption requirements.
  • the sequence selection decision module 13 acquires security parameters and/or power consumption parameters, and acquires the frequency hopping number of the real random frequency hopping sequence according to the security parameters and/or power consumption parameters.
  • the system power consumption requirements can be ignored.
  • the number of frequency hops in the real random frequency hopping sequence is directly determined according to the system security requirements, that is, the real random frequency hopping sequence is obtained according to the security parameters.
  • the frequency hopping number of the frequency hopping sequence for applications with extremely low system security requirements, the system security requirements can be ignored.
  • the frequency hopping number of the random frequency hopping sequence for applications that have certain requirements for system security and system power consumption, the frequency hopping number of the real random frequency hopping sequence can be determined according to the system power consumption requirements and system security requirements at the same time, that is, according to the security
  • the parameters and power parameters get the number of hops for a true random frequency hopping sequence.
  • the frequency hopping number of the inserted real random frequency hopping sequence according to at least one of the security parameter and the power consumption parameter, not only the security of data communication can be effectively improved with the participation of the inserted real random frequency hopping sequence, Moreover, it can meet specific system security and power consumption requirements, so as to meet different application occasions.
  • the sequence selection decision-making module 13 is specifically configured to: obtain an application scenario, and obtain the frequency hopping number from a preset database according to the application scenario, wherein the application scenario is in the same manner as the security parameter and/or the power consumption parameter Correspondence. Further, optionally, the value range of the number of frequency hopping is stored in the preset database, and the sequence selection decision module 13 is specifically configured to randomly select a number from the value range of the number of frequency hopping as the number of frequency hopping.
  • the recommended value of the frequency hopping number can 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, which can be obtained by looking up the table in practical applications.
  • the application scenario determines the security parameters and power consumption parameters.
  • the security level is the highest, that is, the third level, but the power consumption requirement is not high.
  • the security level is the second level, and the power consumption requirement is higher than that of the application scenario of military level confidential communication. It is stored in the database in the form of a table, and when in use, the sequence selection decision module 13 can directly search and obtain it from the preset database according to the application scenario.
  • the recommended value of the frequency hopping number can be a specific value or a specific range.
  • the sequence selection decision module 13 will obtain a certain value based on the current application scenario.
  • Table 1 gives the recommended value of the frequency hopping number corresponding to different application scenarios.
  • the recommended value of the frequency hopping number is the value range of the frequency hopping number, for example, the frequency hopping number corresponding to the military-grade secure communication application scenario.
  • the value range is an integer greater than 10
  • the value range of the frequency hopping number corresponding to an important industrial-grade communication application scenario is an integer between 6 and 10, and so on.
  • Table 1 also shows the security levels that can be achieved in various application scenarios before and after inserting real random frequency hopping sequences.
  • the industrial-grade communication application scenario has been raised from the second level to the fourth level, and the safety improvement percentage has reached 100%. It can be seen from this that after inserting the real random frequency hopping sequence, the security of each application scenario is significantly improved.
  • the frequency hopping number of the inserted real random frequency hopping sequence can be obtained by looking up the table based on the application scenario, and by first determining the value range of the corresponding frequency hopping number according to the application scenario, and then randomly selecting from the value range A value is used as the frequency hopping number of the inserted real random frequency hopping sequence, which can further improve the randomness of the target frequency hopping sequence.
  • the sequence selection decision-making module 13 is specifically configured to: obtain the security level requirement value and the power consumption level requirement value, obtain the security level weight and the power consumption level weight, and obtain the required value according to the security level requirement value and the power consumption level requirement value , the weight of the security level and the weight of the power consumption level are summed and rounded to obtain the number of frequency hopping. Further, optionally, the sequence selection decision-making module 13 is specifically configured to: randomly select a weight from the preset security level weight range as the security level weight, and randomly select a weight from the preset power consumption level weight range as the work Consumption level weight.
  • the sequence selection decision module 13 can calculate and obtain the frequency hopping number of the inserted real random frequency hopping sequence through the following formula (1):
  • n is the frequency hopping number of the inserted real random frequency hopping sequence
  • [ ⁇ 1 *L security + ⁇ 2 *L power ] represents the largest integer not exceeding ⁇ 1 *L security + ⁇ 2 *L power
  • L security is Security level requirement value (integer), for example, the value is ⁇ 6,7,8,9,10 ⁇
  • L power is the power consumption level requirement value (integer), for example, the value is ⁇ 1,2,3,4 ,5 ⁇
  • ⁇ 1 is the security level weight, which is a random value within the preset security level weight range [a s , b s ].
  • a s takes 0, b s takes 1; ⁇ 2 is the work
  • the weight of the power consumption level is a random value within the weight range [a p , b p ] of the preset power consumption level. In general, a p takes 0, and b p takes 1.
  • ⁇ 1 in the example shown in formula (1) is a random value within the preset security level weight range [a s , b s ], and ⁇ 2 is the preset power consumption level weight range [a p ,b p ], and in other examples, ⁇ 1 and ⁇ 2 can also be a predetermined value, which is not limited here.
  • the frequency hopping number of the inserted real random frequency hopping sequence can be calculated through the calculation formula of the random frequency hopping number, and by randomly selecting the The level weight and the power consumption level weight can further improve the randomness of the target frequency hopping sequence.
  • the real random frequency hopping sequence can be generated in two ways: one is direct generation, and the other is generation by randomizing the generated pseudo-random frequency hopping sequence.
  • the real random sequence generation module 12 includes: a real random sequence generator 121, which is used to generate an initial real random frequency hopping sequence, and the sequence selection decision module 13 is also used to start from the initial real random frequency hopping sequence.
  • the frequency hopping data of the frequency hopping number is obtained in the frequency sequence to form a real random frequency hopping sequence.
  • the initial real random frequency hopping sequence can be generated by the real random sequence generator 121 first, and the initial real random frequency hopping sequence contains a plurality of frequency hopping data, and then the sequence selection decision module 13 in the current time slot, according to the security parameters And/or the power consumption parameter acquires the frequency hopping number of the inserted real random frequency hopping sequence, and randomly acquires the frequency hopping number of the frequency hopping number from the initial real random frequency hopping sequence, so as to form a real random frequency hopping sequence.
  • the frequency hopping number of the pseudo-random frequency hopping sequence is greater than 2
  • the real random frequency hopping sequence inserted between the frequency hopping data of every two adjacent pseudo-random frequency hopping sequences can be the same or different, and there is no specific limitation here.
  • the sequence selection decision-making module 13 is also used for: when it is determined that the target frequency hopping sequence corresponding to the current time slot has been used out of date, one or more real random frequency hopping sequences in the target frequency hopping sequence
  • the sequence is updated to generate a new target frequency hopping sequence.
  • updating includes performing at least one of position adjustment, data increase and decrease, and data update on the frequency hopping data in the real random frequency hopping sequence.
  • the sequence selection decision-making module 13 obtains the frequency hopping number of the inserted real random frequency hopping sequence according to the security parameter and/or power consumption parameter, and randomly obtains the frequency hopping number from the initial real random frequency hopping sequence frequency hopping number to form a real random frequency hopping sequence, and insert the real random frequency hopping sequence into the pseudo-random frequency hopping sequence to form the target frequency hopping sequence of the current time slot, and then judge that the target frequency hopping sequence is before Whether it has been used, if it has been used, update the inserted real random frequency hopping sequence, for example, adjust the position of the frequency hopping data of the inserted real random frequency hopping sequence, increase or decrease the frequency hopping data (not exceeding the safety parameter and/or the value range of the frequency hopping number corresponding to the power consumption parameter), or replace the frequency hopping data, etc., and then update the generated target frequency hopping sequence to further improve the randomness of the target frequency hopping sequence, thereby further improving data communication. security.
  • the formed target frequency hopping sequence has no rules to follow, thereby effectively improving the security of data communication.
  • the formed target frequency hopping sequence It is unique, which greatly increases the difficulty of being attacked and intercepted, and greatly improves the security of data communication, especially suitable for applications that require extremely high security.
  • the real random sequence generation module 12 includes: a sequence randomization unit 122, which is used to randomize part of the frequency hopping data in the generated pseudo-random frequency hopping sequence according to the number of frequency hopping processed to form a true random hopping sequence.
  • the randomization process includes at least one of random sorting, random extraction and random interpolation.
  • the sequence selection decision module 13 will obtain the frequency hopping number of the inserted real random frequency hopping sequence according to the security parameter and/or the power consumption parameter, Then the number of frequency hopping is sent to the sequence randomization unit 122 and the sequence randomization unit 122 is started, at this time, the sequence randomization unit 122 performs part of the frequency hopping data in the generated pseudo-random frequency hopping sequence according to the received frequency hopping number Perform randomization processing to form a real random frequency hopping sequence. For example, the sequence randomization unit 122 stores the frequency hopping data of the latest pseudo-random frequency hopping sequence.
  • the frequency hopping data of the random frequency hopping sequence is randomly sorted, randomly extracted or randomly interpolated to generate a real random frequency hopping sequence inserted. It should be noted that when there is no need to insert a real random frequency hopping sequence, the sequence selection decision-making module 13 will close the sequence randomization unit 122, and the sequence randomization unit 122 will not perform a pseudo-random frequency hopping sequence output by the pseudo-random frequency hopping generation module 11 at this time. Do any processing.
  • the sequence selection decision-making module 13 controls the startup and shutdown of the sequence randomization unit 122, wherein, when it is turned off, the sequence randomization unit 122 does not perform any processing on the pseudo-random frequency hopping sequence, that is, does not insert a real random frequency hopping sequence, And when it is turned on, between every adjacent two frequency hopping data of the pseudo-random frequency hopping sequence, according to the frequency hopping number of the real random frequency hopping sequence obtained by the sequence selection decision-making module 13, the pair of the last few pseudo-frequency hopping sequences stored is The frequency hopping data of the random frequency hopping sequence is randomized to generate a real random frequency hopping sequence, so that a randomly generated real random frequency hopping sequence is inserted between every two adjacent frequency hopping data of the pseudo-random frequency hopping sequence.
  • the sequence selection decision-making module 13 is also used for: when it is determined that the target frequency hopping sequence corresponding to the current time slot has been used out of date, one or more real random frequency hopping sequences in the target frequency hopping sequence
  • the sequence is updated to generate a new target frequency hopping sequence.
  • updating includes performing at least one of position adjustment, data increase and decrease, and data update on the frequency hopping data in the real random frequency hopping sequence.
  • the sequence selection decision module 13 also inserts the real random frequency hopping sequence formed by the sequence randomization unit 122 into the pseudo-random frequency hopping sequence to form the target frequency hopping sequence of the current time slot, and judges the Whether the target frequency hopping sequence has been used before, and if it has been used, update the inserted real random frequency hopping sequence (that is, the real random frequency hopping sequence formed by the sequence randomization unit 122), for example, adjust the inserted The position of the frequency hopping data of the real random frequency hopping sequence, increase or decrease the frequency hopping data (not exceeding the value range of the frequency hopping number corresponding to the security parameter and/or power consumption parameter), or replace the frequency hopping data, etc., and then update The generated target frequency hopping sequence is used to further improve the randomness of the target frequency hopping sequence, thereby further improving the security of data communication.
  • the formed target frequency hopping sequence has no rules to follow, thereby effectively improving the security of data communication.
  • the frequency hopping communication device further includes: a frequency hopping sequence management module 15, which is used to obtain the receiving bit error rate of data, and update the pseudo-random frequency hopping according to the receiving bit error rate sequence.
  • the frequency hopping sequence management module 15 also obtains the received bit error rate (or packet error rate) sent by the receiver, which can be detected by the bit error rate detection module in the receiver, and according to the received bit error rate Updating the pseudo-random frequency hopping sequence, for example, eliminating low-quality communication channels, so as to realize the closed-loop control of the pseudo-random frequency hopping sequence and ensure the quality of data communication.
  • the received bit error rate or packet error rate
  • Updating the pseudo-random frequency hopping sequence for example, eliminating low-quality communication channels, so as to realize the closed-loop control of the pseudo-random frequency hopping sequence and ensure the quality of data communication.
  • the frequency hopping sequence management module 15 can be set in the transmitter or the receiver, generally in the host, for example, when the transmitter is the host, the frequency hopping sequence management module 15 is set in the transmitter , and when the receiver is used as the host, the frequency hopping sequence management module 15 can be set in the receiver.
  • the transmitting module 14 includes: a frequency selection unit 141, configured to determine the frequency hopping frequency corresponding to the target frequency hopping sequence; a data transmitting unit 142, configured to transmit data.
  • the frequency selection unit 141 can obtain the frequency hopping frequency corresponding to the target frequency hopping sequence according to a predetermined correspondence, and determine The frequency hopping frequency is sent to the data transmitting unit 142, and the data transmitting unit 142 transmits data according to the frequency hopping frequency.
  • the transmitting module 14 also includes: a data selection unit 143 and a data modulation unit 144, and the data selection unit 143 is used for when the frequency hopping frequency is the frequency hopping frequency corresponding to the pseudo-random frequency hopping sequence , output the useful data to the data modulation unit 144 for modulation, so that the data transmission unit 142 transmits the modulated data of the useful data according to the frequency hopping frequency; the data selection unit 143 is also used for the frequency hopping frequency corresponding to the real random frequency hopping sequence at the frequency hopping frequency , output the interference data to the data modulating unit 144 for modulation, so that the data transmitting unit 142 transmits the modulated data of the interference data according to the frequency hopping frequency.
  • the data modulating unit 144 modulates useful data and interference data in the same modulation manner.
  • the sequence selection decision-making module 13 is also used to control the data selection unit 143 to select and output useful data and interference data, so that the useful data is transmitted through the frequency hopping frequency corresponding to the pseudo-random frequency hopping sequence, and the interference data is transmitted through the real random frequency hopping frequency. Transmit at the frequency hopping frequency corresponding to the frequency sequence. Specifically, when the sequence selection decision-making module 13 determines that the frequency hopping data of the pseudo-random frequency hopping sequence is currently used, a useful control signal is sent to the data selection unit 143.
  • the data selection unit 143 opens the useful data flow and closes the interference data flow (such as random data stream), at this time, what is transmitted is a useful signal, so that the useful data flows into the data modulation unit 144, modulated by the data modulation unit 144 to generate a modulated signal of useful data, and transmitted to the receiver by the data transmission unit 142;
  • the sequence selection decision-making module 13 determines that currently adopts the frequency hopping data of the real random frequency hopping sequence, it sends an interference control signal to the data selection unit 143, and now the data selection unit 143 closes the useful data flow, and opens the interference data flow (such as a random data flow) ), so that the interference data flows into the data modulation unit 144, modulated by the data modulation unit 144 to generate a modulated signal of the interference data, and transmitted to the receiver through the data transmission unit 142, thus useful data and interference data appear alternately in on the transmit signal.
  • the data modulation unit 144 modulates the useful data and the interference data
  • the same modulation method can be used, so that the modulated useful signal and the interference signal have the same spectral characteristics, thereby further improving the efficiency of data communication. safety.
  • the wireless communication device may include: a pseudo-random sequence generation module 11, a real random sequence generation module 12, a sequence selection decision module 13, a transmission module 14 and a frequency hopping sequence management module 15, wherein,
  • the true random sequence generation module 12 includes a true random sequence generator 121
  • the transmitting module 14 includes a frequency selection unit 141, a data transmission unit 142, a data selection unit 143 and a data modulation unit 144, and the data transmission unit 142 can further include a frequency generator 1421, Synthesizing subunit 1422 , digital filter 1423 , radio frequency sending subunit 1424 and transmitting antenna 1425 .
  • the receiver may include: a pseudo-random sequence generation module 21, a bit error rate detection module 22, a 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 A synthesizer 2321 , a separation subunit 2322 , a digital filter 2323 , a radio frequency receiving subunit 2324 and a receiving antenna 2325 .
  • the pseudo-random sequence generation module 11 generates a pseudo-random frequency hopping sequence, which keeps synchronization between the transmitter and the receiver through a professional channel, and the real random sequence generator 121 generates an initial real random frequency hopping sequence sequence.
  • the sequence selection decision-making module 13 obtains the frequency hopping data of the pseudo-random frequency hopping sequence corresponding to the current time slot in the current time slot of data transmission, assuming W1, W3 and W2, and simultaneously obtains the current security parameters and/or power consumption parameters, Obtain the frequency hopping number of the real random frequency hopping sequence that needs to be inserted according to the current security parameter and/or power consumption parameter, for example, the acquired frequency hopping number of the real random frequency hopping sequence inserted between W1 and W3 is 3, The number of frequency hopping in the real random frequency hopping sequence inserted between W3 and W2 is 2.
  • the sequence selection decision-making module 13 further selects 3 frequency hopping randomly from the initial real random frequency hopping sequence according to the acquired frequency hopping number Data, such as frequency hopping data Z1, Z3 and Z2, to form a real random frequency hopping sequence ZA inserted between W1 and W3, and randomly select 2 frequency hopping data from the initial real random frequency hopping sequence, such as frequency hopping data Z5 and Z4 to form a real random frequency hopping sequence ZB inserted between W3 and W2, and finally form the target frequency hopping sequence shown in Figure 3.
  • the sequence selection decision module 13 judges whether the target frequency hopping sequence has been used, if used, updates the target frequency hopping sequence, otherwise remains unchanged.
  • the sequence selection decision module 13 gradually sends the frequency hopping data of the target frequency hopping sequence to the frequency selection unit 141, and 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 , the corresponding carrier wave is generated by the frequency generator 1421 and output to the synthesis subunit 1422; at the same time, the sequence selection decision module 13 also sends a useful control signal to the data selection unit when the frequency hopping data is the frequency hopping data of a pseudo-random frequency hopping sequence 143.
  • the data selection unit 143 When the data selection unit 143 receives the useful control signal, it will input the useful data to the data modulation unit 144, and after being modulated by the data modulation unit 144, the useful signal will be generated and delivered to the synthesis subunit 1422, while the frequency hopping data is truly random During the frequency hopping data of the frequency hopping sequence, the sequence selection decision module 13 sends the interference control signal to the data selection unit 143, and 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 modulates to generate an interference signal and transmits it to the synthesizing subunit 1422.
  • the synthesis subunit 1422 loads the useful signal on the carrier of the frequency hopping frequency corresponding to the pseudo-random frequency hopping sequence, or loads the interference signal on the carrier of the frequency hopping frequency corresponding to the real random frequency hopping sequence, and sends the loaded signal to to the digital filter 1423, after being filtered and processed by the digital filter 1423, it is transmitted to the receiver through the radio frequency sending subunit 1424 and the transmitting antenna 1425 in sequence.
  • the receiver After the receiver receives the signal transmitted by the transmitter through the receiving antenna 2325 and the radio frequency receiving subunit 2324 in sequence, the received signal is sent to the digital filter 2323, and then filtered by the digital filter 2323 and then output to the separation subunit 2322 Simultaneously, the pseudo-random sequence generation module 21 generates the same pseudo-random frequency hopping sequence as the transmitter, and sends the frequency-hopping data of the pseudo-random frequency-hopping sequence to the frequency selection unit 231, and the frequency selection unit 231 obtains the frequency-hopping data corresponding frequency hopping frequency, and the frequency hopping frequency is sent to the frequency synthesizer 2321, and the frequency synthesizer 2321 outputs the corresponding carrier to the separation subunit 2322, and the carrier wave of the frequency hopping frequency corresponding to the pseudo-random frequency hopping sequence is separated by the separation subunit 2322
  • the useful signal in the signal is separated and output to the data demodulation unit 233, and the useful data is obtained after being demodulated by the data demodulation unit
  • the alternating frequency is determined according to the security parameter and/or power consumption parameter, so that the security of data communication is effectively improved, and has Strong flexibility, can be applied to different applications, and the target frequency hopping sequence generated alternately by using pseudo-random frequency hopping sequence and real random frequency hopping sequence is unique, so that the security of data communication is greatly improved, and at the same time It does not increase the difficulty for the receiver to receive useful signals.
  • the wireless communication device may include: a pseudo-random sequence generation module 11, a real random sequence generation module 12, a sequence selection decision module 13, a transmission module 14 and a frequency hopping sequence management module 15, wherein, True random sequence generation module 12 comprises sequence randomization unit 122, and transmission module 14 comprises frequency selection unit 141, data transmission unit 142, data selection unit 143 and data modulation unit 144, and data transmission unit 142 can further comprise frequency generator 1421, synthesis A subunit 1422 , a digital filter 1423 , a radio frequency sending subunit 1424 and a transmitting antenna 1425 .
  • the receiver may include: a pseudo-random sequence generation module 21, a bit error rate detection module 22, a 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 A synthesizer 2321 , a separation subunit 2322 , a digital filter 2323 , a radio frequency receiving subunit 2324 and a receiving antenna 2325 .
  • the pseudo-random sequence generation module 11 generates a pseudo-random frequency hopping sequence, and the pseudo-random frequency hopping sequence maintains synchronization between the transmitter and the receiver through a professional channel.
  • the sequence selection decision module 13 obtains the current security parameters and/or power consumption parameters in the current time slot of data transmission, and obtains the frequency hopping number of the real random frequency hopping sequence that needs to be inserted according to the current security parameters and/or power consumption parameters , for example, the obtained frequency hopping number is 3, and then the obtained frequency hopping number is sent to the sequence randomization unit 122 between two adjacent frequency hopping data of the pseudo-random frequency hopping sequence, and the sequence randomization unit 122 is started according to The frequency hopping number generates a real random frequency hopping sequence and outputs it to the frequency selection unit 141, so as to insert a real random frequency hopping sequence between two adjacent frequency hopping data of the pseudo-random frequency hopping sequence; meanwhile, the sequence selection decision module 13 also real-time Track security parameters and/or power consumption parameters
  • 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 corresponding carrier wave is generated by the frequency generator 1421 and output to the synthesis subunit 1422; meanwhile, the sequence selection decision Module 13 also sends a useful control signal to the data selection unit 143 when the frequency hopping data is the frequency hopping data of a pseudo-random frequency hopping sequence, and the data selection unit 143 inputs the useful data to the data modulation unit 144 when receiving the useful control signal , modulated by the data modulation unit 144 to generate a useful signal and transmit it to the synthesis subunit 1422, and when the frequency hopping data is the frequency hopping data of a real random frequency hopping sequence, the sequence selection decision module 13 sends an interference control signal to the data selection unit 143 , when the data selection unit 143 receives the interference control signal, it inputs the interference data to the data modulation unit 144 , the data modulation unit 144 modulates it to generate
  • the synthesis subunit 1422 loads the useful signal on the carrier of the frequency hopping frequency corresponding to the pseudo-random frequency hopping sequence, or loads the interference signal on the carrier of the frequency hopping frequency corresponding to the real random frequency hopping sequence, and sends the loaded signal to to the digital filter 1423, after being filtered and processed by the digital filter 1423, it is transmitted to the receiver through the radio frequency sending subunit 1424 and the transmitting antenna 1425 in sequence.
  • the receiver After the receiver receives the signal transmitted by the transmitter through the receiving antenna 2325 and the radio frequency receiving subunit 2324 in sequence, the received signal is sent to the digital filter 2323, and then filtered by the digital filter 2323 and then output to the separation subunit 2322 Simultaneously, the pseudo-random sequence generation module 21 generates the same pseudo-random frequency hopping sequence as the transmitter, and sends the frequency-hopping data of the pseudo-random frequency-hopping sequence to the frequency selection unit 231, and the frequency selection unit 231 obtains the frequency-hopping data corresponding frequency hopping frequency, and the frequency hopping frequency is sent to the frequency synthesizer 2321, and the frequency synthesizer 2321 outputs the corresponding carrier to the separation subunit 2322, and the carrier wave of the frequency hopping frequency corresponding to the pseudo-random frequency hopping sequence is separated by the separation subunit 2322
  • the useful signal in the signal is separated and output to the data demodulation unit 233, and the useful data is obtained after being demodulated by the data demodulation unit
  • the alternating frequency is determined according to the security parameter and/or power consumption parameter, so that the security of data communication is effectively improved, and has It has strong flexibility and can be applied to different applications without increasing the difficulty for the receiver to receive useful signals.
  • the frequency hopping communication device of the embodiment of the present invention generates a target frequency hopping sequence by using a pseudo-random frequency hopping sequence and a real random frequency hopping sequence, and hides the pseudo-random frequency hopping sequence in it, so as to approach the real random frequency hopping sequence as a whole.
  • the frequency hopping control effect of the frequency sequence makes the attacker feel that the frequency hopping has no rules to follow, and the frequency hopping between time slots has no correlation, which greatly increases the difficulty of being attacked and intercepted, and greatly improves the
  • the security of data communication is especially suitable for applications with high security requirements; at the same time, the present invention has greater flexibility when generating target frequency hopping sequences, and target frequency hopping sequences determine the security of communication to a certain extent Therefore, the present invention has great flexibility in terms of safety performance; meanwhile, although the present invention improves the communication scheme on the transmitter side and modifies the pseudo-random frequency hopping sequence negotiated between the transmitter and the receiver, the The present invention does not increase the difficulty for the receiver to receive the signal, and the receiver will not process the signal based on the frequency hopping frequency corresponding to the inserted real random frequency hopping sequence.
  • the present invention will increase the transmission power consumption and the overall complexity of the transmitter to a certain extent, it is an effective solution in some occasions with high safety requirements, especially in short-distance micro-power communication scenarios.
  • the power consumption required by itself is not high, and the transmitter is in a dormant state most of the time, increasing the frequency hopping times of the transmitter will not significantly increase the overall absolute power consumption.
  • a transmitter is also provided, which includes the foregoing frequency hopping communication device.
  • the transmitter of the embodiment of the present invention based on the aforementioned frequency hopping communication device, by inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence, the security of data communication can be effectively improved, and it is suitable for applications that require relatively high security and reliability. High communication occasions.
  • FIG. 6 is a schematic flow chart of a frequency hopping communication method according to an embodiment of the present invention. It is illustrated by taking the frequency hopping communication method applied to the transmitter in FIG. 1 as an example. 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, and the pseudo-random frequency hopping sequence is kept synchronized between the transmitter and the receiver.
  • Step S102 inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence to generate a target frequency hopping sequence.
  • Step S103 transmitting data according to the target frequency hopping sequence.
  • inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence to generate the target frequency hopping sequence includes: 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 frequency sequence to generate the target frequency hopping sequence.
  • inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence to generate the target frequency hopping sequence includes: between every adjacent two frequency hopping data of the pseudo-random frequency hopping sequence corresponding to the current time slot Insert a true random hopping sequence to generate a target hopping sequence.
  • inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence to generate a target frequency hopping sequence further includes: obtaining a random number of frequency hopping numbers of the real random frequency hopping sequence.
  • inserting a real random frequency hopping sequence into a pseudo-random frequency hopping sequence to generate a target frequency hopping sequence further includes: obtaining a security parameter and/or a power consumption parameter; obtaining a real random frequency hopping sequence according to the security parameter and/or power consumption parameter The number of hops for the random hopping sequence.
  • obtaining the frequency hopping number of the real random frequency hopping sequence according to the security parameter and/or the power consumption parameter includes: obtaining an application scenario, wherein the application scenario has a corresponding relationship with the security parameter and/or the power consumption parameter; The application scenario obtains the frequency hopping number from the preset database.
  • the value range of the frequency hopping number is stored in the preset database, and the frequency hopping number is obtained from the preset database according to the security parameter and/or power consumption parameter, including: randomly selecting from the value range of the frequency hopping number A number to use as the number of hops.
  • obtaining the frequency hopping number of the real random frequency hopping sequence according to the security parameter and/or the power consumption parameter includes: obtaining a security level requirement value and a power consumption level requirement value; obtaining a security level weight and a power consumption level weight; The weighted sum of the security level requirement value, the power consumption level requirement value, the security level weight and the power consumption level weight is summed and rounded to obtain the frequency hopping number.
  • obtaining the security level weight and the power consumption level weight includes: randomly selecting a weight from a preset security level weight range as the security level weight; randomly selecting a weight from a preset power consumption level weight range to as power consumption class weight.
  • generating a real random frequency hopping sequence includes: generating an initial real random frequency hopping sequence; acquiring frequency hopping data of a frequency hopping number from the initial real random frequency hopping sequence to form a real random frequency hopping sequence.
  • the method further includes: when it is determined that the target frequency hopping sequence corresponding to the current time slot has been used out of date, performing an operation on one or more real random frequency hopping sequences in the target frequency hopping sequence updated to generate a new target frequency hopping sequence.
  • updating includes at least one of position adjustment, data addition and deletion, and data updating of the frequency hopping data in the real random frequency hopping sequence.
  • generating a real random frequency hopping sequence includes: performing randomization processing on part of the 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.
  • the randomization process includes at least one of random ordering, random drawing, and random interpolation.
  • the method further includes: acquiring a received bit error rate of the data; and updating a pseudo-random frequency hopping sequence according to the received bit error rate.
  • transmitting data according to the target frequency hopping sequence includes: determining a frequency hopping frequency corresponding to the target frequency hopping sequence; and transmitting data according to the frequency hopping frequency.
  • transmitting data according to the frequency hopping frequency includes: when the frequency hopping frequency is the frequency hopping frequency corresponding to the pseudo-random frequency hopping sequence, transmitting the modulated data of useful data according to the frequency hopping frequency; when the frequency hopping frequency is a true random When the frequency hopping frequency corresponds to the frequency hopping sequence, the modulated data of the interference data is transmitted according to the frequency hopping frequency.
  • the useful data and the interference data are modulated by the same modulation manner to generate corresponding modulated data.
  • the frequency hopping communication method of the embodiment of the present invention by inserting the real random frequency hopping sequence into the pseudo-random frequency hopping sequence, the security of data communication can be effectively improved, and it is suitable for communication occasions requiring high security and reliability.
  • a computer-readable storage medium on which a frequency hopping communication program is stored, and when the frequency hopping communication program is executed by a processor, the foregoing frequency hopping communication method is implemented.
  • the security of data communication can be effectively improved by inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence, which is suitable for security and reliability. Communication occasions with high performance requirements.
  • a frequency hopping communication chip including: a memory, a processor, and a frequency hopping communication program stored in the memory and operable on the processor.
  • the processor executes the program, the The aforementioned frequency hopping communication method.
  • the security of data communication can be effectively improved by inserting a real random frequency hopping sequence into the pseudo-random frequency hopping sequence, which is suitable for security and reliability Communication occasions with higher requirements.
  • a "computer-readable medium” may be any device that can contain, store, communicate, propagate or transmit a program for use in or in conjunction with an instruction execution system, device or device.
  • computer-readable media include the following: electrical connection with one or more wires (electronic device), portable computer disk case (magnetic device), random access memory (RAM), Read Only Memory (ROM), Erasable and Editable Read Only Memory (EPROM or Flash Memory), Fiber Optic Devices, and Portable Compact Disc Read Only Memory (CDROM).
  • the computer-readable medium may even be paper or other suitable medium on which the program can be printed, as it may be possible, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or other suitable processing if necessary.
  • the program is processed electronically and stored in computer memory.
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features.
  • the features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.

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Abstract

本发明公开了一种跳频通信装置、方法、芯片、发射机及存储介质，其中装置包括：伪随机序列发生模块，用于生成伪随机跳频序列，伪随机跳频序列在发射机与接收机之间保持同步；真实随机序列发生模块，用于生成真实随机跳频序列；序列选择决策模块，用于在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列；发射模块，用于根据目标跳频序列发射数据。由此，通过在伪随机跳频序列中插入真实随机跳频序列能够有效提高数据通信的安全性，适用于对安全性和可靠性要求较高的通信场合。

Description

跳频通信装置、方法、芯片、发射机及存储介质 技术领域
本发明涉及无线通信技术领域，尤其涉及一种跳频通信装置、方法、芯片、发射机及存储介质。
背景技术
在短距离无线通信系统中，为了提高系统的抗干扰和安全性，通常采用基于伪随机序列控制的跳频通信技术，例如蓝牙通信等。
随着跳频技术的发展，目前研究比较火热的自适应跳频技术，如扰隙自适应跳频技术、跳速自适应跳频技术以及功耗自适应跳频技术等，在跳频频点选择、跳频速率以及跳频信号功耗控制方面的控制相比已有的“盲跳频”技术更加智能和高效，极大地提升了系统抗干扰能力和安全能力。除此，人们还研究了多伪随机序列跳频技术，例如，采用多个可选的伪随机序列对发射信号进行控制，且多个可选的伪随机序列各自对应不同的发射时隙。
但是，通过研究发现，目前的跳频技术均是基于伪随机序列对跳频图案进行控制，由于伪随机序列本质上并不是随机的，这就给破解伪随机序列提供了可能，导致其安全性较低。例如，随着半导体技术的飞速发展以及跟踪装置速率的不断提升，信号跟踪能力越来越强，而跳频通信芯片由于受制于成本、功耗等因素很难在跳频速率上有质的提升，使得破解伪随机序列控制的跳频图案的难度越来越小，如高速率跟踪装置容易通过跟踪一个或几个时隙的跳频规则来破解跳频规律，并在接下来的时隙内准确跟踪跳频信号，攻击者据此可以施加相应的干扰信号，妨碍通信的正常进行，也可以截获有用信号，破解有用信号数据，因此目前的跳频技术会随着技术的发展越来越不安全，抗干扰能力也会越来越低。然而，随着通信技术的发展，一些特殊场景，如电力配电用电系统、智能家居门锁等，对短距离无线通信的安全性和抗干扰性的要求却越来越高，因此目前的跳频技术将在这些对信息安全和可靠性要求极高的通信应用场合面临着极大的潜在安全风险。
发明内容
针对上述技术问题，本发明提供了一种能够有效提高数据通信安全性的跳频通信装置、方法、芯片、发射机及存储介质。
一种跳频通信装置，应用于发射机，装置包括：伪随机序列发生模块，用于生成伪随机跳频序列，伪随机跳频序列在发射机与接收机之间保持同步；真实随机序列发生模块，用于生成真实随机跳频序列；序列选择决策模块，用于在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列；发射模块，用于根据目标跳频序列发射数据。
根据本发明实施例的跳频通信装置，通过在伪随机跳频序列中插入真实随机跳频序列能够有效提高数据通信的安全性，适用于对安全性和可靠性要求较高的通信场合。
在一些实施例中，序列选择决策模块具体用于：在当前时隙对应的伪随机跳频序列的任意跳频数据之间插入真实随机跳频序列以生成目标跳频序列。
在一些实施例中，序列选择决策模块具体用于：在当前时隙对应的伪随机跳频序列的每相邻两个跳频数据之间插入真实随机跳频序列以生成目标跳频序列。
在一些实施例中，序列选择决策模块还用于：获取真实随机跳频序列的随机数量的跳频数目。
在一些实施例中，序列选择决策模块还用于：获取安全参数和/或功耗参数，并根据安全参数和/或功耗参数获取真实随机跳频序列的跳频数目。
在一些实施例中，序列选择决策模块具体用于：获取应用场景，并根据应用场景从预设数据库中获取跳频数目，其中，应用场景与安全参数和/或功耗参数呈对应关系。
在一些实施例中，预设数据库中存储有跳频数目的取值范围，序列选择决策模块具体用于：从跳频数目的取值范围内随机选择一个数目以作为跳频数目。
在一些实施例中，序列选择决策模块具体用于：获取安全等级需求值和功耗等级需求值，并获取安全等级权重和功耗等级权重，以及根据安全等级需求值、功耗等级需求值、安全等级权重和功耗等 级权重加权求和并取整，以获取跳频数目。
在一些实施例中，序列选择决策模块具体用于：从预设安全等级权重范围内随机选择一个权重以作为安全等级权重，并从预设功耗等级权重范围内随机选择一个权重以作为功耗等级权重。
在一些实施例中，真实随机序列发生模块包括：真实随机序列发生器，用于生成初始真实随机跳频序列，序列选择决策模块还用于从初始真实随机跳频序列中获取跳频数目的跳频数据以形成真实随机跳频序列。
在一些实施例中，序列选择决策模块还用于：在确定当前时隙对应的目标跳频序列已经使用过时，对目标跳频序列中的一个或多个真实随机跳频序列进行更新，以生成新的目标跳频序列。
在一些实施例中，更新包括对真实随机跳频序列中的跳频数据进行位置调整、数据增减和数据更新中的至少一种。
在一些实施例中，真实随机序列发生模块包括：序列随机化单元，用于根据跳频数目对已生成的伪随机跳频序列中的部分跳频数据进行随机化处理以形成真实随机跳频序列。
在一些实施例中，随机化处理包括随机排序、随机抽取和随机插值中的至少一种。
在一些实施例中，装置还包括：跳频序列管理模块，用于获取数据的接收误码率，并根据接收误码率更新伪随机跳频序列。
在一些实施例中，发射模块包括：频率选择单元，用于确定目标跳频序列对应的跳频频率；数据发射单元，用于根据跳频频率发射数据。
在一些实施例中，发射模块还包括：数据选择单元和数据调制单元，数据选择单元，用于在跳频频率为伪随机跳频序列对应的跳频频率时，输出有用数据至数据调制单元进行调制，以便数据发射单元根据跳频频率发射有用数据的调制数据；数据选择单元，还用于在跳频频率为真实随机跳频序列对应的跳频频率时，输出干扰数据至数据调制单元进行调制，以便数据发射单元根据跳频频率发射干扰数据的调制数据。
在一些实施例中，数据调制单元采用相同的调制方式对有用数据和干扰数据进行调制。
一种发射机，其包括前述的跳频通信装置。
根据本发明实施例的发射机，基于前述的跳频通信装置，通过在伪随机跳频序列中插入真实随机跳频序列能够有效提高数据通信的安全性，适用于对安全性和可靠性要求较高的通信场合。
一种跳频通信方法，应用于发射机，方法包括：生成伪随机跳频序列和真实随机跳频序列，伪随机跳频序列在发射机与接收机之间保持同步；在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列；根据目标跳频序列发射数据。
根据本发明实施例的跳频通信方法，通过在伪随机跳频序列中插入真实随机跳频序列能够有效提高数据通信的安全性，适用于对安全性和可靠性要求较高的通信场合。
在一些实施例中，在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列，包括：在当前时隙对应的伪随机跳频序列的任意跳频数据之间插入真实随机跳频序列以生成目标跳频序列。
在一些实施例中，在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列，包括：在当前时隙对应的伪随机跳频序列的每相邻两个跳频数据之间插入真实随机跳频序列以生成目标跳频序列。
在一些实施例中，在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列，还包括：获取真实随机跳频序列的随机数量的跳频数目。
在一些实施例中，在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列，还包括：获取安全参数和/或功耗参数；根据安全参数和/或功耗参数获取真实随机跳频序列的跳频数目。
在一些实施例中，根据安全参数和/或功耗参数获取真实随机跳频序列的跳频数目，包括：获取应用场景，其中，应用场景与安全参数和/或功耗参数呈对应关系；根据应用场景从预设数据库中获取跳频数目。
在一些实施例中，预设数据库中存储有跳频数目的取值范围，根据安全参数和/或功耗参数从预设数据库中获取跳频数目，包括：从跳频数目的取值范围内随机选择一个数目以作为跳频数目。
在一些实施例中，根据安全参数和/或功耗参数获取真实随机跳频序列的跳频数目，包括：获取安全等级需求值和功耗等级需求值；获取安全等级权重和功耗等级权重；根据安全等级需求值、功耗等级需求值、安全等级权重和功耗等级权重加权求和并取整，以获取跳频数目。
在一些实施例中，获取安全等级权重和功耗等级权重，包括：从预设安全等级权重范围内随机选 择一个权重以作为安全等级权重；从预设功耗等级权重范围内随机选择一个权重以作为功耗等级权重。
在一些实施例中，生成真实随机跳频序列，包括：生成初始真实随机跳频序列；从初始真实随机跳频序列中获取跳频数目的跳频数据以形成真实随机跳频序列。
在一些实施例中，在生成目标跳频序列后，方法还包括：在确定当前时隙对应的目标跳频序列已经使用过时，对目标跳频序列中的一个或多个真实随机跳频序列进行更新，以生成新的目标跳频序列。
在一些实施例中，更新包括对真实随机跳频序列中的跳频数据进行位置调整、数据增减和数据更新中的至少一种。
在一些实施例中，生成真实随机跳频序列，包括：根据跳频数目对已生成的伪随机跳频序列中的部分跳频数据进行随机化处理以形成真实随机跳频序列。
在一些实施例中，随机化处理包括随机排序、随机抽取和随机插值中的至少一种。
在一些实施例中，方法还包括：获取数据的接收误码率；根据接收误码率更新伪随机跳频序列。
在一些实施例中，根据目标跳频序列发射数据，包括：确定目标跳频序列对应的跳频频率；根据跳频频率发射数据。
在一些实施例中，根据跳频频率发射数据，包括：在跳频频率为伪随机跳频序列对应的跳频频率时，根据跳频频率发射有用数据的调制数据；在跳频频率为真实随机跳频序列对应的跳频频率时，根据跳频频率发射干扰数据的调制数据。
在一些实施例中，采用相同的调制方式对有用数据和干扰数据进行调制以生成相应的调制数据。
一种计算机可读存储介质，其上存储有跳频通信程序，该跳频通信程序被处理器执行时实现前述的跳频通信方法。
根据本发明实施例的计算机可读存储介质，通过前述的跳频通信方法，通过在伪随机跳频序列中插入真实随机跳频序列能够有效提高数据通信的安全性，适用于对安全性和可靠性要求较高的通信场合。
一种跳频通信芯片，包括：存储器、处理器及存储在存储器上并可在处理器上运行的跳频通信程序，处理器执行程序时，实现前述的跳频通信方法。
根据本发明实施例的跳频通信芯片，基于前述的跳频通信方法，通过在伪随机跳频序列中插入真实随机跳频序列能够有效提高数据通信的安全性，适用于对安全性和可靠性要求较高的通信场合。
本发明附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
图1为根据本发明一个实施例的跳频通信装置的应用场景图；
图2为根据本发明一个实施例的跳频通信装置的结构示意图；
图3为根据本发明一个实施例的目标跳频序列的示意图；
图4为根据本发明一个实施例的发射机和接收机的结构示意图；
图5为根据本发明另一个实施例的发射机和接收机的结构示意图；
图6为根据本发明一个实施例的跳频通信方法的流程示意图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
需要说明的是，本发明提供的跳频通信装置、方法、芯片、发射机及存储介质，可以应用于如图1所示的应用环境中。其中，发射机1和接收机2之间进行无线数据通信，在数据通信时，发射机1生成伪随机跳频序列(该伪随机跳频序列在发射机1与接收机2之间保持同步)和真实随机跳频序列，并在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列，以及根据目标跳频序列发射数据至接收机2。其中，发射机1和接收机2可为电力配电用通信系统、智能家居门锁等应用场合中的相关设备，具体这里不做限制。
图2为根据本发明一个实施例的跳频通信装置的结构示意图，以该跳频通信装置应用于图1中的发射机为例进行说明，参考图2所示，该跳频通信装置可包括：伪随机序列发生模块11、真实随机 序列发生模块12、序列选择决策模块13和发射模块14。
在本申请的实施例中，所述伪随机序列发生模块11、真实随机序列发生模块12、序列选择决策模块13和发射模块14，分别可以是具有通信接口能够实现通信协议的一个或多个处理器、控制器或者芯片，如有需要还可以包括存储器及相关的接口、系统传输总线等；所述处理器、控制器或者芯片执行程序相关的代码实现相应的功能。或者，可替换的方案为，所述伪随机序列发生模块11、真实随机序列发生模块12、序列选择决策模块13和发射模块14共享一个集成芯片或者共享处理器、控制器、存储器等设备。所述共享的处理器、控制器或者芯片执行程序相关的代码实现相应的功能。
其中，伪随机序列发生模块11用于生成伪随机跳频序列，伪随机跳频序列在发射机与接收机之间保持同步；真实随机序列发生模块12用于生成真实随机跳频序列；序列选择决策模块13用于在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列；发射模块14用于根据目标跳频序列发射数据。
具体来说，伪随机序列发生模块11具体可以为伪随机序列发生器等，主要用于生成伪随机跳频序列，以便基于该伪随机跳频序列对应的跳频频率发射有用数据，且该伪随机跳频序列在发射机与接收机之间保持同步，例如通过专用通道进行伪随机跳频序列的协商，以使发射机和接收机具有相同的伪随机跳频序列，进而便于接收机在接收到发射机发射的数据后，基于相同的伪随机跳频序列获得有用数据。
真实随机序列发生模块12具体可以为真实随机序列发生器等，主要用于生成真实随机跳频序列，以便基于该真实随机跳频序列对应的跳频频率发射干扰数据，且该真实随机跳频序列随机生成，以便通过真实随机跳频序列参与跳频控制，使得外界无法跟踪获得伪随机跳频序列，从而提高数据通信的安全性和可靠性。
序列选择决策模块13与伪随机序列发生模块11和真实随机序列发生模块12分别相连，主要用于在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列，例如，可以在伪随机跳频序列中的任意跳频数据之间插入随机生成的真实随机跳频序列，即真实随机跳频序列插入的位置可以是任意的，且插入的真实随机跳频序列可以是任意的，例如，插入的真实随机跳频序列的跳频数据的位置不同、跳频数据的个数即跳频数目不同或者跳频数据本身不同，进一步的，真实随机跳频序列的跳频数目可以是随机数量的，跳频数据本身可以是随机的，具体这里不做限制，只要通过在伪随机跳频序列中插入真实随机跳频序列后所生成的目标跳频序列在外界看来是无规律可循的即可。由于生成的目标跳频序列无规律可循，因此在外界看来呈接近真实的随机特性，从而使得攻击者无法获得伪随机跳频序列，进而无法基于伪随机跳频序列获得有用数据，使得数据通信的抗跟踪和抗截获能力大大提升，有效解决了采用伪随机跳频序列控制跳频图案导致的安全性低，进而导致信号容易被跟踪和截获的问题。需要说明的是，对于接收机而言，由于伪随机跳频序列在发射机与接收机之间保持同步，因此接收机无需知道真实随机跳频序列对应的跳频频率，只需知道发射机发射的所有跳频频率中什么时候发送的哪个跳频频率是有用的跳频频率即可，即只要知道伪随机跳频序列控制的跳频图案即可，并没有增加接收机的接收难度。
发射模块14与序列选择决策模块13相连，主要用于根据目标跳频序列发射数据，如先确定目标跳频序列对应的跳频频率，而后根据跳频频率对有用数据和干扰数据进行发射。
该实施例中，通过利用伪随机跳频序列和真实随机跳频序列相结合的方式对发射数据进行跳频控制，即在伪随机跳频序列中插入真实随机跳频序列，使得跳频控制呈接近真实的随机特性，从而使得数据通信的抗跟踪和抗截获能力大大提升，有效解决了仅采用伪随机跳频序列控制跳频图案导致的安全性较低，进而导致信号容易被跟踪和截获的问题，适用于如电力配电用通信系统、智能家居门锁等对安全性和可靠性要求较高的应用场合，解决了目前特别是短距离通信场景下潜在的安全风险问题，且未增加接收机的信号接收难度。
在一些实施例中，序列选择决策模块13具体用于：在当前时隙对应的伪随机跳频序列的任意跳频数据之间插入真实随机跳频序列以生成目标跳频序列。
也就是说，序列选择决策模块13可以在伪随机跳频序列的任意跳频数据之间插入一个随机生成的真实随机跳频序列，以生成目标跳频序列。例如，可以间隔一个或多个跳频数据插入一个随机生成的真实随机跳频序列，所间隔的跳频数据可呈规律性也可呈非规律性。例如，可以每间隔两个跳频数据插入一个随机生成的真实随机跳频序列，也可以随机间隔一个或多个跳频数据插入一个随机生成的真实随机跳频序列。
在一些实施例中，序列选择决策模块13具体用于：在当前时隙对应的伪随机跳频序列的每相邻两个跳频数据之间插入真实随机跳频序列以生成目标跳频序列。
也就是说，序列选择决策模块13可以在每相邻两个伪随机跳频序列的跳频数据之间插入一个随机生成的真实随机跳频序列，以生成目标跳频序列。
举例来说，参考图3所示，在当前时隙内，伪随机跳频序列的跳频数据包括跳频数据W1、W3和W2，序列选择决策模块13在插入真实随机跳频序列时，可在伪随机跳频序列的跳频数据W1和W3之间插入真实随机跳频序列ZA，在伪随机跳频序列的跳频数据W3和W2之间插入真实随机跳频序列ZB，其中，真实随机跳频序列ZA包括三个跳频数据Z1、Z3和Z2，真实随机跳频序列ZB包括跳频数据Z5和Z4，最终得到图3所示的目标跳频序列。需要说明的是，该示例仅为示例性说明，并不作为对本发明的具体限制，例如每个时隙内可均包括一个或者多个伪随机跳频序列的跳频数据，所插入的真实随机跳频序列可以在跳频数据的跳频位置、跳频数目以及跳频数据本身等不同于该示例。
该实施例中，虽然伪随机跳频序列有规律可循，但是由于插入的真实随机跳频序列是不同的，因此每个时隙所使用的跳频序列即目标跳频序列均是不同的，从而使得有规律的伪随机跳频序列在攻击者面前展现出毫无规律可言的随机特性，使得攻击者无法从过去时隙的跳频情况寻找出未来时隙的跳频规律，也就无法对有用的跳频频率进行准确跟踪和截获，进而使得有用数据被跟踪和截获的可能性大大降低。
在一些实施例中，序列选择决策模块13还用于：获取安全参数和/或功耗参数，并根据安全参数和/或功耗参数获取真实随机跳频序列的跳频数目。
需要说明的是，由于插入的真实随机跳频序列会在一定程度上增加系统功耗，例如插入的真实随机跳频序列的跳频数目越多，系统功耗增加越多，反之系统功耗增加越少，同时插入的真实随机跳频序列的跳频数目与系统安全性能存在一定的关系，例如插入的真实随机跳频序列的跳频数目越多，系统安全性越高，反之系统安全性越低，因此在本发明中还基于系统安全需求和系统功耗需求确定插入的真实随机跳频序列的跳频数目。
具体地，序列选择决策模块13获取安全参数和/或功耗参数，并根据安全参数和/或功耗参数获取真实随机跳频序列的跳频数目。在具体实施时，对于对系统功耗要求极低的应用场合，可忽略系统功耗需求，此时直接根据系统安全需求确定真实随机跳频序列的跳频数目，即根据安全参数获取真实随机跳频序列的跳频数目；对于对系统安全要求极低的应用场合，可忽略系统安全需求，此时直接根据系统功耗需求确定真实随机跳频序列的跳频数目，即根据功耗参数获取真实随机跳频序列的跳频数目；对于对系统安全和系统功耗均具有一定要求的应用场合，可同时根据系统功耗需求和系统安全需求确定真实随机跳频序列的跳频数目，即根据安全参数和功耗参数获取真实随机跳频序列的跳频数目。
由此，通过根据安全参数和功耗参数中的至少一个来确定插入的真实随机跳频序列的跳频数目，不仅能够在插入的真实随机跳频序列的参与下有效提高数据通信的安全性，而且能够满足具体的系统安全和功耗需求，从而满足不同的应用场合。
进一步的，作为第一种示例，序列选择决策模块13具体用于：获取应用场景，并根据应用场景从预设数据库中获取跳频数目，其中，应用场景与安全参数和/或功耗参数呈对应关系。进一步的，可选的，预设数据库中存储有跳频数目的取值范围，序列选择决策模块13具体用于：从跳频数目的取值范围内随机选择一个数目以作为跳频数目。
具体来说，可预先针对不同的安全参数和/或功耗参数给出跳频数目的推荐值，而后以表格的形式存储在数据库中，在实际应用中通过查表获得即可。需要说明的是，通常情况下，应用场景决定了安全参数和功耗参数，例如在军用级保密通信应用场景中，安全等级最高，即第三级，但功耗要求不高，而在重要工业级通信应用场景中，安全等级为第二级，且功耗要求相对军用级保密通信应用场景有所增加，因此在具体实施时，可直接针对不同的应用场合给出跳频数目的推荐值，并以表格的形式存储在数据库中，在使用时，序列选择决策模块13直接根据应用场景从预设数据库中查找获得即可。另外，需要说明的是，跳频数目的推荐值可以为一个具体值，也可以为一个具体范围，当为一个具体值时，序列选择决策模块13基于当前应用场景将获得一个确定的值，该值即为需要插入的真实随机跳频序列的跳频数目，而当为一个具体范围时，序列选择决策模块13基于当前应用场景将获得一个确定的取值范围，在根据当前应用场景获得相应的取值范围后，再从该取值范围内随机选择一个值作为插入的真实随机跳频序列的跳频数目。
举例来说，表1给出了不同应用场景对应的跳频数目的推荐值，在该示例中，跳频数目的推荐值 为跳频数目的取值范围，例如军用级保密通信应用场景对应的跳频数目的取值范围为大于10的整数，重要工业级通信应用场景对应的跳频数目的取值范围为6～10之间的整数，等等。同时，表1还给出了插入真实随机跳频序列前后各个应用场景所能达到的安全等级，例如军用级保密通信应用场景由第三级提高至第五级，安全提升百分比达到67％，重要工业级通信应用场景由第二级达提高至第四级，安全提升百分比达到100％，由此可以看出，在插入真实随机跳频序列后，各个应用场景的安全性得以明显提高。
表1
Figure PCTCN2022119786-appb-000001
由此，通过基于应用场景通过查表方式能够获得插入的真实随机跳频序列的跳频数目，并且通过根据应用场景先确定相应的跳频数目的取值范围，而后从该取值范围内随机选择一个值作为插入的真实随机跳频序列的跳频数目，能够进一步提高目标跳频序列的随机性。
作为第二种示例，序列选择决策模块13具体用于：获取安全等级需求值和功耗等级需求值，并获取安全等级权重和功耗等级权重，以及根据安全等级需求值、功耗等级需求值、安全等级权重和功耗等级权重加权求和并取整，以获取跳频数目。进一步，可选的，序列选择决策模块13具体用于：从预设安全等级权重范围内随机选择一个权重以作为安全等级权重，并从预设功耗等级权重范围内随机选择一个权重以作为功耗等级权重。
具体来说，在预先无法获得应用场景时，序列选择决策模块13可通过下述公式(1)计算获得插入的真实随机跳频序列的跳频数目：
n＝f(L security,L power)＝[α 1*L security+α 2*L power],α 1∈[a s,b s],α 2∈[a p,b p]      (1)；
其中，n为插入的真实随机跳频序列的跳频数目；[α 1*L security+α 2*L power]表示不超过α 1*L security+α 2*L power的最大整数；L security为安全等级需求值(为整数)，例如取值为{6,7,8,9,10}；L power为功耗等级需求值(为整数)，例如取值为{1,2,3,4,5}；α 1为安全等级权重，该权重为预设安全等级权重范围[a s,b s]内的随机值，一般情况下，a s取0，b s取1；α 2为功耗等级权重，该权重为预设功耗等级权重范围[a p,b p]内的随机值，一般情况下，a p取0，b p取1。举例来说，在军事领域，安全等级最高，L security取值为10，α 1取值为1，功耗要求不高，L power取值为1，α 2取值为0，所以n＝10；在重要民用领域，安全等级第二级，L security取值为7，α 1取值为0.8，功耗要求较高，L power取值为2，α 2取值为0.2，所以n＝6。
需要说明的是，公式(1)所示示例中的α 1为预设安全等级权重范围[a s,b s]内的随机值，α 2为预设功耗等级权重范围[a p,b p]内的随机值，而在其它示例中α 1和α 2也可以为预先确定的一个确定值，具体这里不做限制。
由此，在无法根据应用场景确定插入的真实随机跳频序列的跳频数目的情况下，通过随机跳频数目计算公式可计算获得插入的真实随机跳频序列的跳频数目，并且通过随机选择安全等级权重和功耗 等级权重，能够进一步提高目标跳频序列的随机性。
需要说明的是，在本发明中，真实随机跳频序列的生成方式可包括两种：一种是直接生成，另一种是通过对生成的伪随机跳频序列进行随机化处理生成。
作为第一种示例，参考图4所示，真实随机序列发生模块12包括：真实随机序列发生器121，用于生成初始真实随机跳频序列，序列选择决策模块13还用于从初始真实随机跳频序列中获取跳频数目的跳频数据以形成真实随机跳频序列。
具体来说，可先由真实随机序列发生器121生成初始真实随机跳频序列，该初始真实随机跳频序列包含多个跳频数据，而后序列选择决策模块13在当前时隙内，根据安全参数和/或功耗参数获取插入的真实随机跳频序列的跳频数目，并从初始真实随机跳频序列中随机获取跳频数目的跳频数目，以形成真实随机跳频序列。需要说明的是，在当前时隙内，当伪随机跳频序列的跳频数目大于2个时，在每相邻两个伪随机跳频序列的跳频数据之间插入的真实随机跳频序列可以相同也可以不同，具体这里不做限制。
进一步的，在图4所示示例中，序列选择决策模块13还用于：在确定当前时隙对应的目标跳频序列已经使用过时，对目标跳频序列中的一个或多个真实随机跳频序列进行更新，以生成新的目标跳频序列。可选的，更新包括对真实随机跳频序列中的跳频数据进行位置调整、数据增减和数据更新中的至少一种。
具体来说，在当前时隙内，当序列选择决策模块13根据安全参数和/或功耗参数获取插入的真实随机跳频序列的跳频数目，并从初始真实随机跳频序列中随机获取跳频数目的跳频数目，以形成真实随机跳频序列，以及将真实随机跳频序列插入伪随机跳频序列，以形成当前时隙的目标跳频序列后，还判断该目标跳频序列在此之前是否已经使用过，若已经使用过，则对插入的真实随机跳频序列进行更新，例如，调整插入的真实随机跳频序列的跳频数据的位置，增加或减少跳频数据(不超过安全参数和/或功耗参数对应的跳频数目的取值范围)，或者更换其中的跳频数据等，进而更新生成的目标跳频序列，以进一步提高目标跳频序列的随机性，进而进一步提高数据通信的安全性。
在该实施例中，通过在伪随机跳频序列中插入真实随机跳频序列，使得形成的目标跳频序列无规律可循，从而有效提高了数据通信的安全性，同时形成的目标跳频序列具有唯一性，从而使得被攻击和截获的难度大大提升，极大地提升了数据通信的安全性，特别适合对安全性要求极高的应用场合。
作为第二种示例，参考图5所示，真实随机序列发生模块12包括：序列随机化单元122，用于根据跳频数目对已生成的伪随机跳频序列中的部分跳频数据进行随机化处理以形成真实随机跳频序列。可选的，随机化处理包括随机排序、随机抽取和随机插值中的至少一种。
具体来说，在伪随机跳频序列的每相邻两个跳频数据之间，序列选择决策模块13将根据安全参数和/或功耗参数获取插入的真实随机跳频序列的跳频数目，而后将该跳频数目发送给序列随机化单元122并启动序列随机化单元122，此时序列随机化单元122根据接收到的跳频数目对已生成的伪随机跳频序列中的部分跳频数据进行随机化处理以形成真实随机跳频序列，例如，序列随机化单元122存储有最近的伪随机跳频序列的跳频数据，在接收到跳频数目后，根据跳频数目通过对最近的伪随机跳频序列的跳频数据进行随机排序、随机抽取或随机插值等，以生成插入的真实随机跳频序列。需要说明的是，当无需插入真实随机跳频序列时，序列选择决策模块13将关闭序列随机化单元122，此时序列随机化单元122不对伪随机跳频发生模块11输出的伪随机跳频序列进行任何处理。
也就是说，序列选择决策模块13控制序列随机化单元122的启动和关闭，其中，在关闭时，序列随机化单元122不对伪随机跳频序列做任何处理，即不插入真实随机跳频序列，而在开启时，在伪随机跳频序列的每相邻两个跳频数据之间，根据序列选择决策模块13获取的需要插入的真实随机跳频序列的跳频数目对存储的最近几个伪随机跳频序列的跳频数据进行随机化操作，以生成真实随机跳频序列，从而实现在伪随机跳频序列的每相邻两个跳频数据之间插入随机生成的真实随机跳频序列。
进一步的，在图5所示示例中，序列选择决策模块13还用于：在确定当前时隙对应的目标跳频序列已经使用过时，对目标跳频序列中的一个或多个真实随机跳频序列进行更新，以生成新的目标跳频序列。可选的，更新包括对真实随机跳频序列中的跳频数据进行位置调整、数据增减和数据更新中的至少一种。
具体来说，在当前时隙内，序列选择决策模块13还将序列随机化单元122形成的真实随机跳频序列插入伪随机跳频序列，以形成当前时隙的目标跳频序列，并判断该目标跳频序列在此之前是否已经使用过，若已经使用过，则对插入的真实随机跳频序列(即对序列随机化单元122形成的真实随机 跳频序列)进行更新，例如，调整插入的真实随机跳频序列的跳频数据的位置，增加或减少跳频数据(不超过安全参数和/或功耗参数对应的跳频数目的取值范围)，或者更换其中的跳频数据等，进而更新生成的目标跳频序列，以进一步提高目标跳频序列的随机性，进而进一步提高数据通信的安全性。
在该实施例中，通过在伪随机跳频序列中插入真实随机跳频序列，使得形成的目标跳频序列无规律可循，从而有效提高了数据通信的安全性。
在一些实施例中，参考图4和图5所示，跳频通信装置还包括：跳频序列管理模块15，用于获取数据的接收误码率，并根据接收误码率更新伪随机跳频序列。
具体来说，跳频序列管理模块15还获取接收机发送的接收误码率(或误包率)，该误码率可由接收机中的误码率检测模块检测获得，并根据接收误码率更新伪随机跳频序列，例如，剔除低质量通信信道，从而实现伪随机跳频序列的闭环控制，保证数据通信的质量。
需要说明的是，跳频序列管理模块15除了可以设置在发射机内，也可以设置在接收机，一般设置在主机中，例如当发射机为主机时，跳频序列管理模块15设置在发射机中，而当接收机作为主机时，跳频序列管理模块15可设置在接收机中。
在一些实施例中，参考图4或图5所示，发射模块14包括：频率选择单元141，用于确定目标跳频序列对应的跳频频率；数据发射单元142，用于根据跳频频率发射数据。
需要说明的是，跳频频率与跳频数据一一对应，因此在获得目标跳频序列之后，频率选择单元141可根据预先确定的对应关系获得目标跳频序列对应的跳频频率，并将确定的跳频频率发送至数据发射单元142，由数据发射单元142根据跳频频率发射数据。
进一步的，参考图4或图5所示，发射模块14还包括：数据选择单元143和数据调制单元144，数据选择单元143用于在跳频频率为伪随机跳频序列对应的跳频频率时，输出有用数据至数据调制单元144进行调制，以便数据发射单元142根据跳频频率发射有用数据的调制数据；数据选择单元143还用于在跳频频率为真实随机跳频序列对应的跳频频率时，输出干扰数据至数据调制单元144进行调制，以便数据发射单元142根据跳频频率发射干扰数据的调制数据。其中，数据调制单元144采用相同的调制方式对有用数据和干扰数据进行调制。
具体来说，序列选择决策模块13还用于控制数据选择单元143选择输出有用数据和干扰数据，以使有用数据通过伪随机跳频序列对应的跳频频率进行发射，而干扰数据通过真实随机跳频序列对应的跳频频率进行发射。具体地，当序列选择决策模块13确定当前采用伪随机跳频序列的跳频数据时，发送有用控制信号至数据选择单元143，此时数据选择单元143打开有用数据流，关闭干扰数据流(如随机数据流)，此时发射的是有用信号，以使有用数据流入至数据调制单元144，由数据调制单元144进行调制后生成有用数据的调制信号，并通过数据发射单元142发射至接收机；当序列选择决策模块13确定当前采用真实随机跳频序列的跳频数据时，发送干扰控制信号至数据选择单元143，此时数据选择单元143关闭有用数据流，打开干扰数据流(如随机数据流)，以使干扰数据流入至数据调制单元144，由数据调制单元144进行调制后生成干扰数据的调制信号，并通过数据发射单元142发射至接收机，由此，有用数据和干扰数据交替出现在发射信号上。
需要说明的是，数据调制单元144在对有用数据和干扰数据进行调制时，可采用相同的调制方式，以使调制后获得的有用信号和干扰信号具有相同的频谱特性，从而进一步提高数据通信的安全性。
为使本领域技术人员能够更清楚的了解本发明，下面结合图4和图5对整个数据通信过程进行详细说明。
参考图4所示，在发射机中，无线通信装置可包括：伪随机序列发生模块11、真实随机序列发生模块12、序列选择决策模块13、发射模块14和跳频序列管理模块15，其中，真实随机序列发生模块12包括真实随机序列发生器121，发射模块14包括频率选择单元141、数据发射单元142、数据选择单元143和数据调制单元144，数据发射单元142可进一步包括频率发生器1421、合成子单元1422、数字滤波器1423、射频发送子单元1424和发射天线1425。接收机可包括：伪随机序列发生模块21、误码率检测模块22、接收模块23，接收模块23包括频率选择单元231、数据接收单元232和数据解调单元233，数据接收单元232进一步包括频率合成器2321、分离子单元2322、数字滤波器2323、射频接收子单元2324和接收天线2325。
在数据通信时，伪随机序列发生模块11生成伪随机跳频序列，该伪随机跳频序列通过专业通道在发射机与接收机之间保持同步，真实随机序列发生器121生成初始真实随机跳频序列。序列选择决策模块13在数据发射的当前时隙内，获取当前时隙对应伪随机跳频序列的跳频数据，假设为W1、 W3和W2，同时获取当前的安全参数和/或功耗参数，根据当前的安全参数和/或功耗参数获取需要插入的真实随机跳频序列的跳频数目，例如，获取的插入在W1和W3之间的真实随机跳频序列的跳频数目为3个，而插入在W3和W2之间的真实随机跳频序列的跳频数目为2个，此时序列选择决策模块13进一步根据获取的跳频数目从初始真实随机跳频序列中随机选择3个跳频数据，如跳频数据Z1、Z3和Z2，以形成插入在W1和W3之间的真实随机跳频序列ZA，并从初始真实随机跳频序列中随机选择2个跳频数据，如跳频数据Z5和Z4，以形成插入在W3和W2之间的真实随机跳频序列ZB，并最终形成如图3所示的目标跳频序列。接着，序列选择决策模块13判断该目标跳频序列是否已经使用过，若使用过，则对该目标跳频序列进行更新，否则保持不变。
而后，序列选择决策模块13逐步将目标跳频序列的跳频数据发送至频率选择单元141，由频率选择单元141获取跳频数据对应的跳频频率，并将跳频频率发送至频率发生器1421，由频率发生器1421生成相应的载波并输出至合成子单元1422；同时，序列选择决策模块13还在跳频数据为伪随机跳频序列的跳频数据时，发送有用控制信号至数据选择单元143，数据选择单元143在接收到有用控制信号时，将有用数据输入至数据调制单元144，由数据调制单元144调制后生成有用信号并传递至合成子单元1422，而在跳频数据为真实随机跳频序列的跳频数据时，序列选择决策模块13发送干扰控制信号至数据选择单元143，数据选择单元143在接收到干扰控制信号时，将干扰数据输入至数据调制单元144，由数据调制单元144调制后生成干扰信号并传递至合成子单元1422。合成子单元1422将有用信号加载在伪随机跳频序列对应的跳频频率的载波上，或者将干扰信号加载在真实随机跳频序列对应的跳频频率的载波上，并将加载后的信号发送至数字滤波器1423，由数字滤波器1423滤波处理后，依次通过射频发送子单元1424和发射天线1425发射至接收机。
接收机在依次通过接收天线2325和射频接收子单元2324接收到发射机发射的信号后，将接收到的信号发送至数字滤波器2323，通过数字滤波器2323进行滤波处理后输出至分离子单元2322；同时，伪随机序列发生模块21生成与发射机相同的伪随机跳频序列，并将伪随机跳频序列的跳频数据发送至频率选择单元231，由频率选择单元231获取跳频数据对应的跳频频率，并将跳频频率发送至频率合成器2321，由频率合成器2321输出相应的载波至分离子单元2322，由分离子单元2322基于伪随机跳频序列对应的跳频频率的载波将信号中的有用信号分离出来并输出至数据解调单元233，经数据解调单元233解调后获得有用数据。误码率检测模块22还获取接收的有用数据的接收误码率，并将其发送给跳频序列管理模块15，由跳频序列管理模块15更新发射机和接收机中的伪随机跳频序列。
在该示例中，通过利用伪随机跳频序列和真实随机跳频序列交替发射数据，且交替频度根据安全参数和/或功耗参数进行确定，使得数据通信的安全性得以有效提升，且具有较强的灵活性，能够适用于不同的应用场合，而且通过利用伪随机跳频序列和真实随机跳频序列交替生成的目标跳频序列具有唯一性，从而使得数据通信的安全性大大提升，同时并未增加接收机接收有用信号的难度。
参考图5所示，在发射机中，无线通信装置可包括：伪随机序列发生模块11、真实随机序列发生模块12、序列选择决策模块13、发射模块14和跳频序列管理模块15，其中，真实随机序列发生模块12包括序列随机化单元122，发射模块14包括频率选择单元141、数据发射单元142、数据选择单元143和数据调制单元144，数据发射单元142可进一步包括频率发生器1421、合成子单元1422、数字滤波器1423、射频发送子单元1424和发射天线1425。接收机可包括：伪随机序列发生模块21、误码率检测模块22、接收模块23，接收模块23包括频率选择单元231、数据接收单元232和数据解调单元233，数据接收单元232进一步包括频率合成器2321、分离子单元2322、数字滤波器2323、射频接收子单元2324和接收天线2325。
在数据通信时，伪随机序列发生模块11生成伪随机跳频序列，该伪随机跳频序列通过专业通道在发射机与接收机之间保持同步。序列选择决策模块13在数据发射的当前时隙内，获取当前的安全参数和/或功耗参数，根据当前的安全参数和/或功耗参数获取需要插入的真实随机跳频序列的跳频数目，例如获取的跳频数目为3个，而后在伪随机跳频序列的两个相邻跳频数据之间将获取的跳频数目发送至序列随机化单元122，并启动序列随机化单元122根据跳频数目生成真实随机跳频序列并输出至频率选择单元141，以在伪随机跳频序列的两个相邻跳频数据之间插入真实随机跳频序列；同时，序列选择决策模块13还实时跟踪安全参数和/或功耗参数，以实时调整需要插入的真实随机跳频序列的跳频数目。
而后，频率选择单元141获取跳频数据对应的跳频频率，并将跳频频率发送至频率发生器1421，由频率发生器1421生成相应的载波并输出至合成子单元1422；同时，序列选择决策模块13还在跳 频数据为伪随机跳频序列的跳频数据时，发送有用控制信号至数据选择单元143，数据选择单元143在接收到有用控制信号时，将有用数据输入至数据调制单元144，由数据调制单元144调制后生成有用信号并传递至合成子单元1422，而在跳频数据为真实随机跳频序列的跳频数据时，序列选择决策模块13发送干扰控制信号至数据选择单元143，数据选择单元143在接收到干扰控制信号时，将干扰数据输入至数据调制单元144，由数据调制单元144调制后生成干扰信号并传递至合成子单元1422。合成子单元1422将有用信号加载在伪随机跳频序列对应的跳频频率的载波上，或者将干扰信号加载在真实随机跳频序列对应的跳频频率的载波上，并将加载后的信号发送至数字滤波器1423，由数字滤波器1423滤波处理后，依次通过射频发送子单元1424和发射天线1425发射至接收机。
接收机在依次通过接收天线2325和射频接收子单元2324接收到发射机发射的信号后，将接收到的信号发送至数字滤波器2323，通过数字滤波器2323进行滤波处理后输出至分离子单元2322；同时，伪随机序列发生模块21生成与发射机相同的伪随机跳频序列，并将伪随机跳频序列的跳频数据发送至频率选择单元231，由频率选择单元231获取跳频数据对应的跳频频率，并将跳频频率发送至频率合成器2321，由频率合成器2321输出相应的载波至分离子单元2322，由分离子单元2322基于伪随机跳频序列对应的跳频频率的载波将信号中的有用信号分离出来并输出至数据解调单元233，经数据解调单元233解调后获得有用数据。误码率检测模块22还获取接收的有用数据的接收误码率，并将其发送给跳频序列管理模块15，由跳频序列管理模块15更新发射机和接收机中的伪随机跳频序列。
在该示例中，通过利用伪随机跳频序列和真实随机跳频序列交替发射数据，且交替频度根据安全参数和/或功耗参数进行确定，使得数据通信的安全性得以有效提升，且具有较强的灵活性，能够适用于不同的应用场合，同时并未增加接收机接收有用信号的难度。
综上所述，本发明实施例的跳频通信装置，通过利用伪随机跳频序列和真实随机跳频序列生成目标跳频序列，将伪随机跳频序列隐藏其中，使得整体上逼近真实随机跳频序列的跳频控制效果，进而使得攻击者感觉跳频无规律可循，时隙与时隙之间的跳频不具有相关性，从而使得被攻击和截获的难度大大提升，极大地提升了数据通信的安全性，特别适合对安全性要求极高的应用场合；同时，本发明在生成目标跳频序列时具有较大的灵活性，而目标跳频序列在一定程度上决定着通信的安全性，因此本发明在安全性能方面具备很大的灵活性；同时，本发明虽然对发射机侧的通信方案进行了改进，并修改了发射机和接收机协商后的伪随机跳频序列，但是本发明并没有增加接收机接收信号的难度，接收机不会处理基于插入的真实随机跳频序列对应的跳频频率的信号。另外，虽然本发明在一定程度上会增加发射功耗和发射机整体复杂度，但是在对一些安全要求较高的场合这是一种有效的方案，尤其在短距离微功率通信场景，由于发射本身要求的功耗不高，并且绝大多数时间发射机都处于休眠状态，增加发射机跳频次数在整体绝对功耗上增加并不会明显。
在本发明的一些实施例中，还提供了一种发射机，其包括前述的跳频通信装置。
根据本发明实施例的发射机，基于前述的跳频通信装置，通过在伪随机跳频序列中插入真实随机跳频序列能够有效提高数据通信的安全性，适用于对安全性和可靠性要求较高的通信场合。
图6为根据本发明一个实施例的跳频通信方法的流程示意图，以该跳频通信方法应用于图1中的发射机为例进行说明，参考图6所示，该跳频通信方法可包括以下步骤：
步骤S101，生成伪随机跳频序列和真实随机跳频序列，伪随机跳频序列在发射机与接收机之间保持同步。
步骤S102，在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列。
步骤S103，根据目标跳频序列发射数据。
在一些实施例中，在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列，包括：在当前时隙对应的伪随机跳频序列的任意跳频数据之间插入真实随机跳频序列以生成目标跳频序列。
在一些实施例中，在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列，包括：在当前时隙对应的伪随机跳频序列的每相邻两个跳频数据之间插入真实随机跳频序列以生成目标跳频序列。
在一些实施例中，在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列，还包括：获取真实随机跳频序列的随机数量的跳频数目。
在一些实施例中，在伪随机跳频序列中插入真实随机跳频序列以生成目标跳频序列，还包括：获取安全参数和/或功耗参数；根据安全参数和/或功耗参数获取真实随机跳频序列的跳频数目。
在一些实施例中，根据安全参数和/或功耗参数获取真实随机跳频序列的跳频数目，包括：获取 应用场景，其中，应用场景与安全参数和/或功耗参数呈对应关系；根据应用场景从预设数据库中获取跳频数目。
在一些实施例中，预设数据库中存储有跳频数目的取值范围，根据安全参数和/或功耗参数从预设数据库中获取跳频数目，包括：从跳频数目的取值范围内随机选择一个数目以作为跳频数目。
在一些实施例中，根据安全参数和/或功耗参数获取真实随机跳频序列的跳频数目，包括：获取安全等级需求值和功耗等级需求值；获取安全等级权重和功耗等级权重；根据安全等级需求值、功耗等级需求值、安全等级权重和功耗等级权重加权求和并取整，以获取跳频数目。
在一些实施例中，获取安全等级权重和功耗等级权重，包括：从预设安全等级权重范围内随机选择一个权重以作为安全等级权重；从预设功耗等级权重范围内随机选择一个权重以作为功耗等级权重。
在一些实施例中，生成真实随机跳频序列，包括：生成初始真实随机跳频序列；从初始真实随机跳频序列中获取跳频数目的跳频数据以形成真实随机跳频序列。
在一些实施例中，在生成目标跳频序列后，方法还包括：在确定当前时隙对应的目标跳频序列已经使用过时，对目标跳频序列中的一个或多个真实随机跳频序列进行更新，以生成新的目标跳频序列。
在一些实施例中，更新包括对真实随机跳频序列中的跳频数据进行位置调整、数据增减和数据更新中的至少一种。
在一些实施例中，生成真实随机跳频序列，包括：根据跳频数目对已生成的伪随机跳频序列中的部分跳频数据进行随机化处理以形成真实随机跳频序列。
在一些实施例中，随机化处理包括随机排序、随机抽取和随机插值中的至少一种。
在一些实施例中，方法还包括：获取数据的接收误码率；根据接收误码率更新伪随机跳频序列。
在一些实施例中，根据目标跳频序列发射数据，包括：确定目标跳频序列对应的跳频频率；根据跳频频率发射数据。
在一些实施例中，根据跳频频率发射数据，包括：在跳频频率为伪随机跳频序列对应的跳频频率时，根据跳频频率发射有用数据的调制数据；在跳频频率为真实随机跳频序列对应的跳频频率时，根据跳频频率发射干扰数据的调制数据。
在一些实施例中，采用相同的调制方式对有用数据和干扰数据进行调制以生成相应的调制数据。
需要说明的是，关于本申请中的跳频通信方法的描述，请参考本申请中关于跳频通信装置的描述，具体这里不再赘述。
根据本发明实施例的跳频通信方法，通过在伪随机跳频序列中插入真实随机跳频序列能够有效提高数据通信的安全性，适用于对安全性和可靠性要求较高的通信场合。
在本发明的一些实施例中，还提供了一种计算机可读存储介质，其上存储有跳频通信程序，该跳频通信程序被处理器执行时实现前述的跳频通信方法。
根据本发明实施例的计算机可读存储介质，通过前述的跳频通信方法，通过在伪随机跳频序列中插入真实随机跳频序列能够有效提高数据通信的安全性，适用于对安全性和可靠性要求较高的通信场合。
在本发明的一些实施例中，还提供了一种跳频通信芯片，包括：存储器、处理器及存储在存储器上并可在处理器上运行的跳频通信程序，处理器执行程序时，实现前述的跳频通信方法。
根据本发明实施例的跳频通信芯片，基于前述的跳频通信方法，通过在伪随机跳频序列中插入真实随机跳频序列能够有效提高数据通信的安全性，适用于对安全性和可靠性要求较高的通信场合。
需要说明的是，在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读介质中，以供指令执行系统、装置或设备(如基于计算机的系统、包括处理器的系统或其他可以从指令执行系统、装置或设备取指令并执行指令的系统)使用，或结合这些指令执行系统、装置或设备而使用。就本说明书而言，"计算机可读介质"可以是任何可以包含、存储、通信、传播或传输程序以供指令执行系统、装置或设备或结合这些指令执行系统、装置或设备而使用的装置。计算机可读介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)，便携式计算机盘盒(磁装置)，随机存取存储器(RAM)，只读存储器(ROM)，可擦除可编辑只读存储器(EPROM或闪速存储器)，光纤装置，以及便携式光盘只读存储器(CDROM)。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。
应当理解，本发明的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。例如，如果用硬件来实现，和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (39)

  1. 一种跳频通信装置，其特征在于，应用于发射机，所述装置包括：
    伪随机序列发生模块，用于生成伪随机跳频序列，所述伪随机跳频序列在所述发射机与接收机之间保持同步；
    真实随机序列发生模块，用于生成真实随机跳频序列；
    序列选择决策模块，用于在所述伪随机跳频序列中插入所述真实随机跳频序列以生成目标跳频序列；
    发射模块，用于根据所述目标跳频序列发射数据。
  2. 根据权利要求1所述的跳频通信装置，其特征在于，所述序列选择决策模块具体用于：在当前时隙对应的伪随机跳频序列的任意跳频数据之间插入所述真实随机跳频序列以生成所述目标跳频序列。
  3. 根据权利要求1所述的跳频通信装置，其特征在于，所述序列选择决策模块具体用于：在当前时隙对应的伪随机跳频序列的每相邻两个跳频数据之间插入所述真实随机跳频序列以生成所述目标跳频序列。
  4. 根据权利要求1所述的跳频通信装置，其特征在于，所述序列选择决策模块还用于：获取所述真实随机跳频序列的随机数量的跳频数目。
  5. 根据权利要求1所述的跳频通信装置，其特征在于，所述序列选择决策模块还用于：获取安全参数和/或功耗参数，并根据所述安全参数和/或所述功耗参数获取所述真实随机跳频序列的跳频数目。
  6. 根据权利要求5所述的跳频通信装置，其特征在于，所述序列选择决策模块具体用于：获取应用场景，并根据所述应用场景从预设数据库中获取所述跳频数目，其中，所述应用场景与所述安全参数和/或所述功耗参数呈对应关系。
  7. 根据权利要求6所述的跳频通信装置，其特征在于，所述预设数据库中存储有所述跳频数目的取值范围，所述序列选择决策模块具体用于：从所述跳频数目的取值范围内随机选择一个数目以作为所述跳频数目。
  8. 根据权利要求5所述的跳频通信装置，其特征在于，所述序列选择决策模块具体用于：获取安全等级需求值和功耗等级需求值，并获取安全等级权重和功耗等级权重，以及根据所述安全等级需求值、所述功耗等级需求值、所述安全等级权重和所述功耗等级权重加权求和并取整，以获取所述跳频数目。
  9. 根据权利要求8所述的跳频通信装置，其特征在于，所述序列选择决策模块具体用于：从预设安全等级权重范围内随机选择一个权重以作为所述安全等级权重，并从预设功耗等级权重范围内随机选择一个权重以作为所述功耗等级权重。
  10. 根据权利要求4-9中任一项所述的跳频通信装置，其特征在于，所述真实随机序列发生模块包括：真实随机序列发生器，用于生成初始真实随机跳频序列，所述序列选择决策模块还用于从所述初始真实随机跳频序列中获取所述跳频数目的跳频数据以形成所述真实随机跳频序列。
  11. 根据权利要求2所述的跳频通信装置，其特征在于，所述序列选择决策模块还用于：在确定所述当前时隙对应的目标跳频序列已经使用过时，对所述目标跳频序列中的一个或多个真实随机跳频序列进行更新，以生成新的目标跳频序列。
  12. 根据权利要求11所述的跳频通信装置，其特征在于，所述更新包括对所述真实随机跳频序列中的跳频数据进行位置调整、数据增减和数据更新中的至少一种。
  13. 根据权利要求4-9中任一项所述的跳频通信装置，其特征在于，所述真实随机序列发生模块包括：序列随机化单元，用于根据所述跳频数目对已生成的伪随机跳频序列中的部分跳频数据进行随机化处理以形成所述真实随机跳频序列。
  14. 根据权利要求13所述的跳频通信装置，其特征在于，所述随机化处理包括随机排序、随机抽取和随机插值中的至少一种。
  15. 根据权利要求1所述的跳频通信装置，其特征在于，所述装置还包括：跳频序列管理模块，用于获取所述数据的接收误码率，并根据所述接收误码率更新所述伪随机跳频序列。
  16. 根据权利要求1所述的跳频通信装置，其特征在于，所述发射模块包括：
    频率选择单元，用于确定所述目标跳频序列对应的跳频频率；
    数据发射单元，用于根据所述跳频频率发射所述数据。
  17. 根据权利要求16所述的跳频通信装置，其特征在于，所述发射模块还包括：数据选择单元和数据调制单元，
    所述数据选择单元，用于在所述跳频频率为所述伪随机跳频序列对应的跳频频率时，输出有用数据至所述数据调制单元进行调制，以便所述数据发射单元根据所述跳频频率发射所述有用数据的调制数据；
    所述数据选择单元，还用于在所述跳频频率为所述真实随机跳频序列对应的跳频频率时，输出干扰数据至所述数据调制单元进行调制，以便所述数据发射单元根据所述跳频频率发射所述干扰数据的调制数据。
  18. 根据权利要求17所述的跳频通信装置，其特征在于，所述数据调制单元采用相同的调制方式对所述有用数据和所述干扰数据进行调制。
  19. 一种发射机，其特征在于，包括根据权利要求1-18中任一项所述的跳频通信装置。
  20. 一种跳频通信方法，其特征在于，应用于发射机，所述方法包括：
    生成伪随机跳频序列和真实随机跳频序列，所述伪随机跳频序列在所述发射机与接收机之间保持同步；
    在所述伪随机跳频序列中插入所述真实随机跳频序列以生成目标跳频序列；
    根据所述目标跳频序列发射数据。
  21. 根据权利要求20所述的跳频通信方法，其特征在于，所述在所述伪随机跳频序列中插入所述真实随机跳频序列以生成目标跳频序列，包括：
    在当前时隙对应的伪随机跳频序列的任意跳频数据之间插入所述真实随机跳频序列以生成所述目标跳频序列。
  22. 根据权利要求20所述的跳频通信方法，其特征在于，所述在所述伪随机跳频序列中插入所述真实随机跳频序列以生成目标跳频序列，包括：
    在当前时隙对应的伪随机跳频序列的每相邻两个跳频数据之间插入所述真实随机跳频序列以生成所述目标跳频序列。
  23. 根据权利要求20所述的跳频通信方法，其特征在于，所述在所述伪随机跳频序列中插入所述真实随机跳频序列以生成目标跳频序列，还包括：
    获取所述真实随机跳频序列的随机数量的跳频数目。
  24. 根据权利要求20所述的跳频通信方法，其特征在于，所述在所述伪随机跳频序列中插入所述真实随机跳频序列以生成目标跳频序列，还包括：
    获取安全参数和/或功耗参数；
    根据所述安全参数和/或所述功耗参数获取所述真实随机跳频序列的跳频数目。
  25. 根据权利要求24所述的跳频通信方法，其特征在于，所述根据所述安全参数和/或所述功耗参数获取所述真实随机跳频序列的跳频数目，包括：
    获取应用场景，其中，所述应用场景与所述安全参数和/或所述功耗参数呈对应关系；
    根据所述应用场景从预设数据库中获取所述跳频数目。
  26. 根据权利要求25所述的跳频通信方法，其特征在于，所述预设数据库中存储有所述跳频数目的取值范围，所述根据所述安全参数和/或所述功耗参数从预设数据库中获取所述跳频数目，包括：
    从所述跳频数目的取值范围内随机选择一个数目以作为所述跳频数目。
  27. 根据权利要求24所述的跳频通信方法，其特征在于，所述根据所述安全参数和/或所述功耗参数获取所述真实随机跳频序列的跳频数目，包括：
    获取安全等级需求值和功耗等级需求值；
    获取安全等级权重和功耗等级权重；
    根据所述安全等级需求值、所述功耗等级需求值、所述安全等级权重和所述功耗等级权重加权求和并取整，以获取所述跳频数目。
  28. 根据权利要求27所述的跳频通信方法，其特征在于，所述获取安全等级权重和功耗等级权重，包括：
    从预设安全等级权重范围内随机选择一个权重以作为所述安全等级权重；
    从预设功耗等级权重范围内随机选择一个权重以作为所述功耗等级权重。
  29. 根据权利要求23-28中任一项所述的跳频通信方法，其特征在于，生成真实随机跳频序列，包括：
    生成初始真实随机跳频序列；
    从所述初始真实随机跳频序列中获取所述跳频数目的跳频数据以形成所述真实随机跳频序列。
  30. 根据权利要求21所述的跳频通信方法，其特征在于，在生成所述目标跳频序列后，所述方法还包括：
    在确定所述当前时隙对应的目标跳频序列已经使用过时，对所述目标跳频序列中的一个或多个真实随机跳频序列进行更新，以生成新的目标跳频序列。
  31. 根据权利要求30所述的跳频通信方法，其特征在于，所述更新包括对所述真实随机跳频序列中的跳频数据进行位置调整、数据增减和数据更新中的至少一种。
  32. 根据权利要求23-28中任一项所述的跳频通信方法，其特征在于，生成真实随机跳频序列，包括：
    根据所述跳频数目对已生成的伪随机跳频序列中的部分跳频数据进行随机化处理以形成所述真实随机跳频序列。
  33. 根据权利要求32所述的跳频通信方法，其特征在于，所述随机化处理包括随机排序、随机抽取和随机插值中的至少一种。
  34. 根据权利要求20所述的跳频通信方法，其特征在于，所述方法还包括：
    获取所述数据的接收误码率；
    根据所述接收误码率更新所述伪随机跳频序列。
  35. 根据权利要求20所述的跳频通信方法，其特征在于，所述根据所述目标跳频序列发射数据，包括：
    确定所述目标跳频序列对应的跳频频率；
    根据所述跳频频率发射所述数据。
  36. 根据权利要求35所述的跳频通信方法，其特征在于，所述根据所述跳频频率发射所述数据，包括：
    在所述跳频频率为所述伪随机跳频序列对应的跳频频率时，根据所述跳频频率发射有用数据的调制数据；
    在所述跳频频率为所述真实随机跳频序列对应的跳频频率时，根据所述跳频频率发射干扰数据的调制数据。
  37. 根据权利要求36所述的跳频通信方法，其特征在于，采用相同的调制方式对所述有用数据和所述干扰数据进行调制以生成相应的调制数据。
  38. 一种计算机可读存储介质，其特征在于，其上存储有跳频通信程序，该跳频通信程序被处理器执行时实现根据权利要求20-37中任一项所述的跳频通信方法。
  39. 一种跳频通信芯片，其特征在于，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的跳频通信程序，所述处理器执行所述程序时，实现根据权利要求20-37中任一项所述的跳频通信方法。
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