CN113543125B - Encryption transmission method of 5G array antenna - Google Patents
Encryption transmission method of 5G array antenna Download PDFInfo
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- CN113543125B CN113543125B CN202110704609.7A CN202110704609A CN113543125B CN 113543125 B CN113543125 B CN 113543125B CN 202110704609 A CN202110704609 A CN 202110704609A CN 113543125 B CN113543125 B CN 113543125B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/03—Protecting confidentiality, e.g. by encryption
- H04W12/033—Protecting confidentiality, e.g. by encryption of the user plane, e.g. user's traffic
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- 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
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3297—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving time stamps, e.g. generation of time stamps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses an encryption transmission method of a 5G array antenna, which adopts array antennas with sparse array arrangement, effectively reduces the deployment cost, splits transmission information into small-section signals, selects different encryption modes for encryption according to error correction codes, integrates encryption signals and time stamps to form encryption signals, judges whether the signals are interfered or not through the time stamps and the error correction codes after the antennas receive the encryption signals, and then selects a first decoding mode or a second decoding mode for decoding according to the positions of error correction serial numbers to ensure the safety of signal transmission.
Description
Technical Field
The invention relates to the field of antennas, in particular to an encryption transmission method of a 5G array antenna.
Background
Antennas are widely used in radio systems such as communication, broadcasting, television, radar, and navigation, and function to propagate radio waves, and are indispensable devices to radiate and receive radio waves effectively. An array antenna is a special type of antenna in which not less than two antenna elements are arranged regularly or randomly and predetermined radiation characteristics are obtained by appropriate excitation. The rapid development of the current antenna communication knowledge and technology and the international proposal of various research directions of the antenna all promote the generation of novel antennas. An array antenna is one direction of research, and the array antenna is not simply arranged in the form of an array which is familiar to people, but is formed in an array form. The large-scale MIMO array adopted by the 5G base station antenna can effectively improve the communication capacity, and meanwhile, the effective coverage of signals is realized by combining a multi-beam technology. However, the array units with smaller spacing cause stronger common-frequency coupling interference, so that the mismatch, pattern distortion and inter-unit isolation of the antenna array are deteriorated, the cost of 5G antenna deployment is higher, the antenna deployment at the present stage is extremely difficult, the signal of the antenna is distorted due to interference in the transmission process, the quality of the signal is reduced, and the safety of signal transmission is not guaranteed during special signal transmission.
For example, a "smart antenna" disclosed in chinese patent literature, its publication number CN105453511a, includes a housing that supports: an omni-directional antenna array; a plurality of transceivers electrically connected to the antenna array; a format conversion and boost device electrically connected between a plurality of transceivers and a network port, the format conversion and boost device comprising multiplexing/demultiplexing circuitry for encoding and decoding a plurality of USB signals from the plurality of transceivers to the network port. However, the antenna only ensures decompression and encryption of signals through the receiving and transmitting structure, so that whether external interference affects signal transmission cannot be judged, and meanwhile, the safety of signal transmission cannot be ensured.
Disclosure of Invention
The invention mainly aims at the problems of high cost and low signal transmission safety of the existing antenna equipment; the 5G array antenna for encryption transmission is provided, the deployment cost is reduced through a sparse array, signals are encrypted through convolution or time domain conversion, transmission verification is carried out through integrating time stamps and error correction codes, and the safety of the transmission process is ensured.
The technical problems of the invention are mainly solved by the following technical proposal:
the encryption transmission method of the 5G array antenna adopts sparse array arrangement, the antennas adopt encryption transmission mode to transmit signals, the encryption transmission method comprises the following steps:
step s1, splitting a signal containing complete information to be transmitted by an antenna into different small-section signals with the same information quantity, and sequentially compiling serial numbers;
step s2, binding a bit error correction code to different small-section signals, and converting the different small-section signals into new small-section signals by adopting convolution transformation or time domain transformation according to the difference of the error correction codes;
step 3, converting the new small-section signals and serial numbers of the signals into binary information codes and position codes respectively through digital-to-analog conversion, and combining the position codes and the information codes into full information codes in sequence;
step S4, randomly inserting error correction codes bound with different small-section signals into the full information codes to form encryption codes; the other time stamp is matched with different encryption codes, and the encryption codes and the corresponding time stamps are sequentially combined into an encryption signal;
step 5, the antenna changes the integrated encrypted signal into an electromagnetic wave signal, the signal is transmitted to a receiving end through the propagation of the electromagnetic wave in the air, and whether the signal is interfered in the transmission process is judged according to the content of the signal;
step 6, confirming that the signal is not interfered, and determining the position of the error correction code according to the time stamp; different modes are selected for decoding according to the position of the error correction code, and an original small-section signal is obtained after decoding; and integrating the small-section signals according to the sequence codes to obtain the transmitted complete signal content.
According to the scheme, the deployment cost is reduced through the sparse array, signals are encrypted through convolution or time domain conversion, transmission verification is carried out through integrating the time stamp and the error correction code, and the safety of the transmission process is ensured.
Preferably, the time converted from the time stamp in step s4 is an accurate time signal, and the year, month, day, hour and minute of the time signal are the accurate time of the current signal transmission, and the second of the time signal is determined according to the position and parity of the error correction code. The signal is encrypted according to the current time, and after the receiving end receives the signal, the signal can be judged whether to suffer interference according to the time, and the judging method is simple and quick.
Preferably, in step s4, the time seconds converted by the time stamp is the error correction code, the second value of the time signal ranges from 0 to 7, the signal after removing the error correction code is the signal actually containing the information, and when the second value exceeds the range, the signal is considered to be wrong.
Preferably, when the number of seconds of the time signal obtained after the time stamp conversion is an odd number, the error correction code is 1; when the number of seconds of the time signal obtained after the time stamp conversion is even, the error correction code is 0. The signal receiving end can judge whether interference occurs in the signal transmission process or not through comparison of error correction codes and time stamp seconds, and the accuracy of signals is guaranteed.
Preferably, the step s5 of determining whether the signal transmission process is interfered after receiving the electromagnetic wave by the antenna receiving end is as follows:
step s51, converting the electromagnetic wave into sixteen-bit encrypted signals;
step s52, separating the time stamp of the last eight bits of the sixteen bits of the encrypted signal, converting the time stamp into year, month, day, time, minute and second, and primarily judging whether the encrypted signal suffers interference in the transmission process according to the year, month, day, time and minute information;
step s53, after the year, month, day, time and minute are confirmed to be complete and correct, the position of the error correction code is judged according to the second digit of the time signal, and whether the encrypted signal suffers interference in the transmission process is judged again according to the second digit.
Preferably, there are a first decoding method and a second decoding method; the error correction code is between 0 bit and 3 bits, and the encrypted signal is decoded by adopting a first decoding mode; the error correction code is between 4 bits and 7 bits, and the encrypted signal is decoded in a second decoding mode. The double decoding mode ensures the safety of signal transmission.
Preferably, the first decoding mode is deconvolution operation, the second decoding mode is anti-time domain operation, and the first decoding mode is universal, simple and quick and corresponds to the encryption mode.
The beneficial effects of the invention are as follows:
1. through the sparse array, a larger array aperture is obtained by using fewer array elements, so that good direction-finding precision and high direction-finding resolution are ensured, and meanwhile, a small-scale receiving system and a signal processing system are matched in a limited space conveniently, the equipment cost is reduced, the structural design is optimized, and the heat dissipation system is simplified.
2. The signal is encrypted by integrating the time stamp and the error correction code, and whether the signal is correct or not is judged according to the time stamp by decryption at a receiving party, so that the safety and the accuracy of the signal transmitted by the antenna are ensured.
Detailed Description
It should be understood that the examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
The technical scheme of the invention is further specifically described by the following examples.
The encryption transmission method of the 5G array antenna adopts sparse array arrangement, the antennas adopt encryption transmission mode to transmit signals, the encryption transmission method comprises the following steps:
step s1, splitting signals
Splitting a signal containing complete information to be transmitted by an antenna into different small-section signals with the same information quantity, and sequentially compiling sequence numbers.
Step s2, signal encryption
Setting a bit of different error correction codes for different small-section signals with the same information quantity, wherein the error correction codes are 0 or 1, and converting the different small-section signals into new small-section signals through convolution transformation or time domain transformation according to the difference of the error correction codes, wherein the signals are encrypted signals;
step s3, digital-to-analog conversion
The new small-section signal is converted into a four-bit binary information code through digital-to-analog conversion, the serial number of the small section is converted into a three-bit binary position code, the position code and the information code are integrated into a seven-bit full information code, the first three bits of the full information code are the position code, and the last four bits are the information code;
step s4, integrating the encrypted signal
Randomly inserting one-bit error correction code into a seven-bit full information code, and integrating the error correction code and the full information code to form an eight-bit encryption code;
the time converted by the time stamp is an accurate time signal, the number of years, months, days, hours and minutes of the time signal is the accurate time of current signal transmission, and the number of seconds of the time signal is determined according to the position and parity of the error correction code;
the range of the second value of the time signal obtained after the time stamp conversion is 0 to 7, and the second value of the time signal obtained after the time stamp conversion is the position of the error correction code.
When the second number of the time signal obtained after the time stamp conversion is an odd number, the error correction code is 1; when the number of seconds of the time signal obtained after the time stamp conversion is even, the error correction code is 0. The value range of the second number of the time signal obtained after the time stamp conversion is 0 to 7.
The eight-bit encryption code combining the error correction code and the full information code is integrated with the corresponding eight-bit time stamp into a sixteen-bit encryption signal, wherein the first eight bits of the encryption signal are encryption codes, and the last eight bits are time stamps;
step s5, transmitting and receiving the signal, and judging whether the signal suffers interference
The antenna converts the integrated encrypted signal into an electromagnetic wave signal, the electromagnetic wave is transmitted to a receiving end through the propagation of the electromagnetic wave in the air, and the receiving end of the antenna receives the electromagnetic wave and converts the electromagnetic wave into sixteen-bit encrypted signal;
separating the time stamp of the last eight bits of the sixteen-bit encrypted signal, converting the time stamp into year, month, day, time, minute and second, and primarily judging whether the encrypted signal suffers interference in the transmission process according to the information of the year, month, day, time and minute;
after the year, month, day, hour and minute are complete and correct, judging the position of the error correction code according to the second digit of the time signal, and judging whether the encrypted signal suffers interference in the transmission process or not again according to the second digit;
step s6, decoding and signal ordering
If the confirmation signal is not interfered, the error correction code obtained according to the time stamp is proposed to the first eight bits, and the rest seven-bit signal is the encrypted full information code which is transmitted initially and contains small-section information;
a first decoding mode and a second decoding mode exist, an encryption mode adopted at first is judged according to the position of an error correction code, the error correction code is between 0 bit and 3 bits, and the encryption signal is decoded by adopting the first decoding mode; the error correction code is between 4 bits and 7 bits, and the encrypted signal is decoded in a second decoding mode.
Selecting a first decoding mode or a second decoding mode for decoding according to the encryption mode to obtain an original small-section signal; the first decoding mode is deconvolution operation, and the second decoding mode is anti-time domain operation.
And obtaining the serial number of the original small-section signal according to the position code of the first three bits of the full information code, and arranging and integrating according to the sequence of the serial number to obtain the final signal content so as to complete the encrypted transmission of the signal.
Claims (7)
1. An encryption transmission method of a 5G array antenna is characterized in that: the adopted array antennas are arranged in a sparse array mode, signals are transmitted among the antennas in an encrypted transmission mode, and the encrypted transmission method comprises the following steps of:
step s1, splitting a signal containing complete information to be transmitted by an antenna into different small-section signals with the same information quantity, and sequentially compiling serial numbers;
step s2, binding a bit error correction code to different small-section signals, and converting the different small-section signals into new small-section signals by adopting convolution transformation or time domain transformation according to the difference of the error correction codes;
step 3, converting the new small-section signals and serial numbers of the signals into binary information codes and position codes respectively through digital-to-analog conversion, and combining the position codes and the information codes into full information codes in sequence;
step S4, randomly inserting error correction codes bound with different small-section signals into the full information codes to form encryption codes; the other time stamp is matched with different encryption codes, and the encryption codes and the corresponding time stamps are sequentially combined into an encryption signal;
step 5, the antenna changes the integrated encrypted signal into an electromagnetic wave signal, the signal is transmitted to a receiving end through the propagation of the electromagnetic wave in the air, and whether the signal is interfered in the transmission process is judged according to the content of the signal;
step 6, confirming that the signal is not interfered, and determining the position of the error correction code according to the time stamp; different modes are selected for decoding according to the position of the error correction code, and an original small-section signal is obtained after decoding; and integrating the small-section signals according to the sequence codes to obtain the transmitted complete signal content.
2. The method for encrypted transmission of a 5G array antenna according to claim 1, wherein: and s4, converting the time stamp into an accurate time signal, wherein the year, month, day, hour and minute of the time signal are the accurate time of current signal transmission, and the second of the time signal is determined according to the position and parity of the error correction code.
3. The method for encrypted transmission of a 5G array antenna according to claim 2, wherein: and s4, the time seconds converted by the time stamp is the bit of the error correction code, and the value range of the seconds of the time signal is 0 to 7.
4. The method for encrypted transmission of a 5G array antenna according to claim 2, wherein: when the second number of the time signal obtained after the time stamp conversion is an odd number, the error correction code is 1; when the number of seconds of the time signal obtained after the time stamp conversion is even, the error correction code is 0.
5. The method for encrypted transmission of a 5G array antenna according to claim 1, wherein: and step s5, after receiving the electromagnetic wave, the antenna receiving end judges whether the signal is interfered in the transmission process, and the step is as follows:
step s51, converting the electromagnetic wave into sixteen-bit encrypted signals;
step s52, separating the time stamp of the last eight bits of the sixteen bits of the encrypted signal, converting the time stamp into year, month, day, time, minute and second, and primarily judging whether the encrypted signal suffers interference in the transmission process according to the year, month, day, time and minute information;
step s53, after the year, month, day, time and minute are confirmed to be complete and correct, the position of the error correction code is judged according to the second digit of the time signal, and whether the encrypted signal suffers interference in the transmission process is judged again according to the second digit.
6. The method for encrypted transmission of a 5G array antenna according to claim 1, wherein: there are a first decoding mode and a second decoding mode; the error correction code is between 0 bit and 3 bits, and the encrypted signal is decoded by adopting a first decoding mode; the error correction code is between 4 bits and 7 bits, and the encrypted signal is decoded in a second decoding mode.
7. The method for encrypted transmission of a 5G array antenna according to claim 6, wherein: the first decoding mode is deconvolution operation, and the second decoding mode is anti-time domain operation.
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| WO2014087674A1 (en) * | 2012-12-07 | 2014-06-12 | パナソニック株式会社 | Signal generation method, transmission device, reception method, and reception device |
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| JP2005110228A (en) * | 2003-09-10 | 2005-04-21 | Matsushita Electric Ind Co Ltd | Secure communication method, transmitting device, and receiving device |
| US8189697B2 (en) * | 2008-10-01 | 2012-05-29 | Harris Corporation | Orthogonal frequency division multiplexing (OFDM) communications device and method that incorporates low PAPR preamble and receiver channel estimate circuit |
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| CN101534123A (en) * | 2009-04-20 | 2009-09-16 | 西安新邮通信设备有限公司 | Method for encoding and decoding applicable to multi-user multicast communication and device thereof |
| CN103404061A (en) * | 2011-02-21 | 2013-11-20 | 松下电器产业株式会社 | Precoding method, and precoding device |
| WO2014087674A1 (en) * | 2012-12-07 | 2014-06-12 | パナソニック株式会社 | Signal generation method, transmission device, reception method, and reception device |
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