CN116566456A - Communication method, device, base station, terminal, system and storage medium - Google Patents

Communication method, device, base station, terminal, system and storage medium Download PDF

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Publication number
CN116566456A
CN116566456A CN202310566181.3A CN202310566181A CN116566456A CN 116566456 A CN116566456 A CN 116566456A CN 202310566181 A CN202310566181 A CN 202310566181A CN 116566456 A CN116566456 A CN 116566456A
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terminals
base station
base stations
signals
imaging
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CN116566456B (en
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张继龙
俞晓琳
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Suzhou Weimo Electronic Information Technology Co ltd
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Suzhou Weimo Electronic Information Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0682—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission using phase diversity (e.g. phase sweeping)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15564—Relay station antennae loop interference reduction
    • H04B7/15585—Relay station antennae loop interference reduction by interference cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/025—Services making use of location information using location based information parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • 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

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

A communication method, device, base station, terminal, system and storage medium, comprising, the first base station receives the signals of other base stations or terminals, processes the received signals by adopting imaging method to obtain image signals, and then detects and demodulates the image signals to obtain the angle coordinates, transmission information and positioning information of other base stations or terminals; the first base station forms a plurality of transmitting beams to communicate with other corresponding base stations or terminals simultaneously based on an imaging equivalent method according to the angle coordinates of the other base stations or terminals; the first base station dynamically regulates and controls the energy intensity of a plurality of transmitting beams communicated with other base stations or terminals, so that the energy saving and the efficient utilization of the first base station are realized while the effective transmission of information is ensured. The method and the device can realize rapid imaging and angle measurement; generating multi-beam emission with different power intensities; the small signal detection capability is strong; the method has the advantages of high communication quality, long communication distance, low energy consumption of the base station and the like.

Description

Communication method, device, base station, terminal, system and storage medium
Technical Field
The invention belongs to the technical field of wireless communication, and particularly relates to a communication method, a device, a base station, a terminal, a system and a storage medium.
Background
In the existing wireless communication, a phased array antenna is generally adopted by a communication base station, and when the base station communicates with other base stations or terminals, a digital beam synthesis technology is generally adopted to perform multi-beam reception, but the digital beam synthesis technology has higher requirements on hardware operation resources, and the more synthesized beams, the more hardware operation resources are needed. In addition, in the current communication means, a simultaneous multi-beam transmission technology is generally adopted to simultaneously communicate with a plurality of terminals, but the energy intensity of the transmission beam is basically the same for terminals with different distances, so that energy waste occurs for terminals with a short distance, and improvement of communication error rate may occur due to insufficient signal intensity for terminals with a long distance; in actual communication, due to the simultaneous existence of a plurality of terminals and the influence of other interferences, the noise floor of the receiver is improved, and particularly, the existence of large signals and interference signals can seriously influence the detection of peripheral small signals, so that the communication distance is shortened.
In summary, the existing wireless communication technology has the above disadvantages, which causes certain difficulties in the popularization and application of 5G communication and 6G communication, and is particularly characterized by short communication distance, high station-laying cost and greatly improved energy consumption.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention provides a novel communication method, a device, a base station, a terminal, a system and a storage medium, which can obviously improve the performance of a communication system.
In a first aspect, the present invention provides a communication method, comprising:
step 1, a first base station receives signals of other base stations or terminals;
step 2, the first base station processes the received signals by adopting an imaging method to obtain image signals, and then detects and demodulates the image signals to obtain the angle coordinates and transmission information of other base stations or terminals;
and 3, the first base station forms a plurality of transmitting beams to communicate with other corresponding base stations or terminals simultaneously based on an imaging equivalent method according to the angle coordinates of the other base stations or terminals.
Further, in step 2:
the first base station processes the received signal by adopting an imaging method to obtain an image signal, then detects and demodulates the image signal to obtain the angle coordinates and transmission information of other base stations or terminals, and the method comprises the following steps:
the first base station adopts a digital beam forming technology or a rapid imaging technology to carry out imaging processing on the received signals, so as to obtain image signals of the received signals:
The method comprises the steps of weighting amplitude and phase of signals received by an antenna array by adopting a high-efficiency parallel algorithm, and then performing rapid imaging processing; the efficient parallel algorithm includes, but is not limited to, one-dimensional, two-dimensional or three-dimensional FFTs, IFFTs, non-uniform FFTs, sparse FFTs; taking two-dimensional FFT imaging as an example, the calculation method comprises the following steps:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,for calculating the obtained image signal +.>、/>For spectral domain coordinates, symbol->Representing an efficient parallel algorithm function->For signals received by the antenna array, < >>Weighting coefficients for an antenna array (including but not limited to uniform distribution, cosine weighting, hamming window, taylor distribution, chebyshev distribution, and hybrid weighting methods).
And resolving the angle coordinates corresponding to the image signals, wherein:
for the efficient parallel algorithm of the IFFT class, the calculation formula of the angle coordinate is as follows:
；
for the efficient parallel algorithm of FFT class, the calculation formula of the angle coordinate is as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,、/>the azimuth and elevation angle coordinates of other base stations or terminals with respect to the antenna array,wavenumber, lambda is wavelength, ">、/>The unit spacing of the antenna array unit in the horizontal and vertical directions, and the symbolRepresenting an arcsine function.
As an alternative to the imaging process, the digital beam forming technology may be used to perform the imaging process on the signals received by the antenna array, that is, by forming a plurality of spatial receiving beams to cover the communication airspace, arranging the signals received by all the receiving beams according to spatial distribution, and also obtaining the image signals received by the base station.
The first base station detects the image signals of the received signals so as to obtain the angle coordinates of other base stations or terminals corresponding to the first base station; demodulating the image signal of the received signal to obtain transmission information sent by other base stations or terminals; acquiring signal-to-noise ratio information of first base station signals received by other base stations or terminals according to the transmission information, or calculating the distance from the other base stations or terminals to the first base station by combining the positioning information of the first base station:
and detecting the signal of the image signal obtained by calculation, if the effective communication signal is detected, indicating that other base stations or terminals exist in a certain space direction, and obtaining the angle coordinates of the other base stations or terminals by extracting the angle coordinates of the corresponding positions of the image signal.
When detecting that an effective communication signal exists at a certain position of an image signal, demodulating the corresponding image signal, extracting transmission information of other base stations or terminals, and decoding the transmission information to obtain information of other base stations or terminals, positioning information of related base stations or terminals, and signal-to-noise ratio information of first base station signals received by other base stations or terminals.
And according to the positioning information of other base stations or terminals, calculating the distance from the other base stations or terminals to the first base station by combining the positioning information of the first base station.
As an alternative scheme for calculating the distance from other base stations or terminals to the first base station, a multi-base station cross positioning method can be adopted for calculation, that is, a plurality of (at least 2) base stations are adopted for carrying out the imaging processing on the same base station or terminal to be measured and extracting the angle coordinates of the same base station or terminal to be measured, and the distance from the base station or terminal to be measured to the first base station can be calculated by combining the positioning information of the base station.
Further, in step 3:
the first base station dynamically regulates and controls the energy intensity of a plurality of transmitting beams communicated with other base stations or terminals, so that the energy saving and the efficient utilization of the first base station are realized while the effective transmission of information is ensured.
The first base station forms a plurality of transmitting beams to communicate with other corresponding base stations or terminals simultaneously based on an imaging equivalent method according to the angle coordinates of the other base stations or terminals; the first base station dynamically regulates and controls the energy intensity of a plurality of transmitting beams communicated with other base stations or terminals, so that the energy saving and high-efficiency utilization are realized while the effective transmission of information is ensured:
the first base station calculates amplitude and phase weighting coefficients of the antenna array unit based on an imaging equivalent method according to angle coordinates and distances of other base stations or terminals, and forms a plurality of transmitting beams in space by controlling the amplitude and phase weighting coefficients of the antenna array unit; and the first base station simultaneously forms a plurality of transmitting beams to communicate with the corresponding other base stations or terminals according to the angle coordinates of the other base stations or terminals.
Generating multi-beam emission based on an imaging equivalent method, wherein the multi-beam emission comprises the steps of generating an equivalent target, generating an antenna array equivalent port surface field, generating an antenna array port surface amplitude, generating a phase weighting coefficient and the like; when the first base station calculates the amplitude and phase weighting coefficients of the antenna array unit, the corresponding equivalent incident plane wave intensity is determined by utilizing the distances from other base stations or terminals to be communicated to the first base station, so that communication signals with different intensities are transmitted to other base stations or terminals with different distances.
Equivalent target generation refers to generating a corresponding equivalent target according to the measured information such as the angle coordinates, the distance and the like of other base stations or terminals. According to the antenna theory, a certain relation exists between the far-field pattern of the antenna and the image of the target, and the far-field pattern can be equivalently used as a far-field pattern corresponding to field distribution of a plurality of incident plane waves with different directions and different intensities on the port surface of the antenna array. Combining the distance information of other base stations or terminals obtained in the step 2, an equivalent incident plane wave set of the multi-beam directional diagram to be formed can be obtainedWherein->Respectively the firstiAngular coordinates of the other base station or terminal, +. >Is the firstiThe distance of the other base station or terminal from the first base station also represents the intensity of the equivalent incident plane wave.
The antenna array equivalent port surface field generation refers to the generation of an equivalent complex port surface field of an antenna array port surface according to an equivalent incident plane wave set. First, theiThe phases of the equivalent incident plane waves reaching the port surface of the antenna array are as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiThe phases of the incident waves of the equivalent incident plane waves at the antenna array units with the horizontal serial numbers of m and the vertical serial numbers of n, wherein m and n are serial numbers of the antenna array units in the horizontal direction and the vertical direction respectively, and the symbol +.>Representing a sine function.
Signal intensity ofThe i-th equivalent incident plane wave reaches the equivalent complex port surface field of the port surface of the antenna array as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiEquivalent complex interface surface fields of the equivalent incident plane waves at the antenna array units with the horizontal serial number m and the vertical serial number n,jin units of imaginary numbers,eis Euler constant;
equivalent incident plane wave setThe equivalent complex interface field at the antenna array unit is:
；
wherein the symbols areRepresenting a summation operation.
Further, the amplitude and phase weighting coefficients of the antenna array unit are as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,weighting values for the amplitude of the antenna array elements, +. >For the phase weight of the antenna array element, symbol +.>Representing absolute value operation, sign->Representing the argument taking operation.
The method is adopted to generate multi-beam transmission, the energy of each beam is different, the energy is related to the distance between other base stations or terminals to be communicated, the distance between other base stations or terminals is far, the corresponding transmission beam energy is high, and the energy of the corresponding transmission beam is low, so that the energy utilization rate is improved, and the energy consumption of the base stations is reduced.
Further, in step 3, it is also possible to:
the first base station forms a plurality of transmitting beams to communicate with other corresponding base stations or terminals simultaneously based on an imaging equivalent method according to the angle coordinates of the other base stations or terminals; the first base station dynamically regulates and controls the energy intensity of a plurality of transmitting beams communicated with other base stations or terminals, so that the energy saving and high-efficiency utilization are realized while the effective transmission of information is ensured:
the transmission information sent by other base stations or terminals to the first base station comprises signal-to-noise ratio information;
the first base station demodulates the signal-to-noise ratio information of the first base station signals received by other base stations or terminals according to the transmission information of the other base stations or terminals;
The first base station determines the required signal-to-noise ratio requirement according to the types of other base stations or terminals, so as to determine the energy intensity adjusting coefficient of the corresponding transmitting wave beam;
the first base station generates an equivalent incident plane wave set of a corresponding multibeam directional diagram according to the measured angle coordinates of other base stations or terminalsWherein->Respectively the firstiAngular coordinates of the other base station or terminal, +.>Is the firstiThe energy intensity adjusting coefficients of the corresponding transmitting beams of other base stations or terminals;
and generating an equivalent complex interface field of the antenna array interface according to the equivalent incident plane wave set. First, theiThe phases of the equivalent incident plane waves reaching the port surface of the antenna array are as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiThe phases of the incident waves of the equivalent incident plane waves at the antenna array units with the horizontal serial numbers of m and the vertical serial numbers of n, wherein m and n are serial numbers of the antenna array units in the horizontal direction and the vertical direction respectively, and the symbol +.>Representing a sine function.
Signal intensity ofI et al of (2)The equivalent complex interface field of the effective incident plane wave reaching the antenna array interface is as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiEquivalent complex aperture surface fields of the equivalent incident plane waves at the antenna array units with the horizontal serial number m and the vertical serial number n.
Equivalent incident plane wave setThe equivalent complex interface field at the antenna array unit is:
；
wherein the symbols areRepresenting a summation operation.
Further, the amplitude and phase weighting coefficients of the antenna array unit are as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,weighting values for the amplitude of the antenna array elements, +.>For the phase weight of the antenna array element, symbol +.>Representing absolute value operation, sign->Representing the argument taking operation.
The method is adopted to generate multi-beam transmission, the energy of each beam is different and is related to the signal-to-noise ratio of other base stations or terminals to be communicated, the energy intensity of the transmitted beam is reduced for other base stations or terminals with higher signal-to-noise ratio, and the energy intensity of the transmitted beam is improved for other base stations or terminals with lower signal-to-noise ratio, so that the energy distribution and optimization are realized while each base station or terminal can effectively receive signals, the energy utilization efficiency is improved, and the energy consumption of the base station is reduced.
Further, in step 3, it is also possible to:
the first base station generates sending signals of different antenna array units by adopting a signal directional synthesis technology and combining information to be transmitted according to angle coordinates of other base stations or terminals based on an imaging equivalent method, so that directional multi-beam transmission corresponding to a plurality of different signals is formed in space, and a specific signal is sent to the specific other base stations or terminals:
By adopting the method, the first base station receives signals of other base stations or terminals, and processes the received signals by adopting an imaging method to obtain image signals, so as to detect and demodulate the image signals and obtain information such as angle coordinates, transmission information, positioning information and the like of the other base stations or terminals;
first generating reference signals to be sent to other base stations or terminals:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is of circumference rate>To be sent to the firstiReference signal of other base station or terminal, +.>For a complex signal envelope containing transmission information +.>Is the carrier frequency and t is time.
When multi-beam transmission is generated, a signal directional synthesis technology is adopted, so that directional synthesis of signals is realized and the signals are sent to other base stations or terminals in a designated direction. First, the multi-beam pattern to be synthesized is also equivalent to the incident plane wave setWherein->Respectively the firstiAngular coordinates of the other base stations or terminals.
First, theiThe phases of the equivalent incident plane waves reaching the port surface of the antenna array are as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiThe phases of the incident waves of the equivalent incident plane waves at the antenna array units with the horizontal serial numbers of m and the vertical serial numbers of n, wherein m and n are serial numbers of the antenna array units in the horizontal direction and the vertical direction respectively, and the symbol +. >Representing a sine function.
Unit intensity of firstiThe equivalent complex interface field of the equivalent incident plane wave reaching the antenna array interface is as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiAnd the equivalent incident plane waves are complex interface fields corresponding to the antenna array units with the horizontal serial numbers m and the vertical serial numbers n.
By equivalent multiplexingModulating reference signals to be transmitted by using the orofacial field data, and transmitting the reference signals to the antenna array unit with the horizontal serial number m and the vertical serial number niThe signals of the other base stations or terminals are:
；
and summing all signals to be transmitted to other different base stations or terminals to obtain signals to be transmitted finally formed by each unit:
。
the method of the invention is adopted to generate multi-beam emission, each beam mainly comprises signal energy related to the object to be communicated, and the energy loss in other beams and directions is negligible, thereby improving the energy utilization rate and reducing the energy consumption of the base station.
Further, in step 3, it is also possible to:
the first base station adopts a signal orientation synthesis technology based on an imaging equivalence method, and when calculating the transmission signals of the antenna array unit, the corresponding equivalent incident plane wave intensity is corrected by utilizing the distance information of other base stations or terminals to be communicated or the signal-to-noise ratio information of the first base station signals received by the first base station, so that multi-beam communication signals with different intensities are emitted to different other base stations or terminals:
When multi-beam transmission is generated, a signal directional synthesis technology is adopted, so that directional synthesis of signals is realized and the signals are sent to other base stations or terminals in a designated direction. First, the multi-beam pattern to be synthesized is also equivalent to the incident plane wave setWherein->Respectively the firstiAngular coordinates of the other base station or terminal, +.>Is the firstiThe intensity of the equivalent incident plane wave can be determined according to the distance from other base stations or terminals to the first base station, and can also be determined according to the signal-to-noise ratio of the first base station signals received by other base stations or terminals:
when determining the intensity of the equivalent incident plane wave according to the distance from the other base station or terminal to the first base station, it is possible to take:
；
wherein is the firstiThe distance of the other base stations or terminals to the first base station;
when determining the intensity of the equivalent incident plane wave according to the signal-to-noise ratio of the first base station signal received by other base stations or terminals, it is possible to obtain:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiThe signal-to-noise ratio of the first base station signal received by the other base station or terminal,is the firstiThe minimum signal-to-noise ratio required by each other base station or terminal to meet the bit error rate requirements.
First, theiThe phases of the equivalent incident plane waves reaching the port surface of the antenna array are as follows:
；
Wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiThe phases of the incident waves of the equivalent incident plane waves at the antenna array units with the horizontal serial number of m and the vertical serial number of n, wherein m and n are the sequences of the horizontal direction and the vertical direction of the antenna array units respectivelyNumber, sign->Representing a sine function.
Signal intensity ofIs the first of (2)iThe equivalent complex interface field of the equivalent incident plane wave reaching the antenna array interface is as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiAnd the equivalent incident plane waves are complex interface fields corresponding to the antenna array units with the horizontal serial numbers m and the vertical serial numbers n.
Modulating a reference signal to be transmitted by using equivalent complex interface surface field data, and transmitting the reference signal to the antenna array unit with a horizontal serial number m and a vertical serial number niThe signals of the other base stations or terminals are:
；
and summing all signals to be transmitted to other different base stations or terminals to obtain signals to be transmitted finally formed by each unit:
。
the method of the invention is adopted to generate multi-beam emission, each beam mainly comprises signal energy related to an object to be communicated, the energy intensity of each beam is different, the energy utilization rate is further improved, and the energy consumption of the base station is further reduced.
In a second aspect, the present invention provides another communication method comprising:
The first base station adopts an imaging cancellation method to improve the receiving capability of a long-distance weak communication signal so as to increase the communication distance, and specifically comprises the following steps:
step 1, a first base station receives signals of other base stations or terminals;
step 2, the first base station processes the received signals by adopting an imaging method to obtain image signals, and then detects and demodulates the image signals to obtain angle coordinates and transmission information of other base stations, terminals or interferences;
step 3, the first base station accurately measures the angle coordinates of other detected base stations, terminals or interference, and carries out imaging reconstruction and cancellation on signals of other base stations, terminals or interference according to measurement results to obtain imaging signals after the imaging cancellation;
and 4, detecting the image signals subjected to imaging cancellation by the first base station, detecting and demodulating the signals of the other newly-appearing base stations or terminals, and further obtaining the angle coordinates and transmission information of the other newly-appearing base stations and terminals.
Step 1 and step 2, the first base station receives signals of other base stations or terminals, processes the received signals by adopting an imaging method to obtain image signals, and then detects and demodulates the image signals to obtain angle coordinates and transmission information of the other base stations, terminals or interference:
By adopting the method, the first base station receives signals of other base stations or terminals, and the imaging method is adopted to carry out imaging processing on the received signals to obtain original image signals:
；
further detecting and demodulating the image signals to obtain the angle coordinates and transmission information of other base stations or terminals, and extracting the signal strength of the image signals corresponding to other base stations, terminals or interference signals, wherein the firstiThe image signal strength of each other base station, terminal or interference signal is recorded as。
Step 3, the first base station accurately measures the angle coordinates of other detected base stations, terminals or interference, and performs imaging reconstruction and cancellation on signals of other base stations, terminals or interference to obtain image signals after imaging cancellation:
and carrying out imaging operation on the antenna array receiving signals by adopting a differential beam imaging method:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is a difference beam image signal +.>And accurately solving the angle coordinates of other base stations, terminals or interference signals according to nulls of the image signals of the difference beams for the antenna array weighting coefficients corresponding to the difference beams.
As an alternative to accurate angle measurement, the angle coordinates of other base stations, terminals or interfering signals may also be accurately determined using direction of arrival estimation techniques, digital beam synthesis techniques, etc.
According to the angle coordinates obtained by accurate angle measurement, adopting the method of the step 3 in the method, and equivalent the signals of other measured base stations, terminals or interference to be incident plane wave sets in different directionsWherein->Respectively the firstiAngular coordinates of other base stations, terminals or interfering signals.
Further, reconstructing and imaging signals of other base stations, terminals or interference:
according to the angle coordinates of the equivalent incident plane waves, calculating the complex port surface field distribution of the unit intensity equivalent incident plane wave set at the antenna array unit as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,the complex interface surface field distribution of the unit intensity equivalent incident plane wave set at the antenna array unit.
The complex port surface field distribution of the unit intensity equivalent incident plane wave set on the antenna array port surface is as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,the complex port surface field distribution of the unit intensity equivalent incident plane wave set on the port surface of the antenna array,expressed as +.>A matrix of elements.
Calculating an image signal according to complex port surface field distribution of unit intensity equivalent incident plane wave collection on the port surface of the antenna array:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,image signals formed by the unit intensity equivalent incident plane wave set;
detecting an image signal formed by a unit intensity equivalent incident plane wave set, and extracting the signal intensity of the unit intensity equivalent incident plane wave set image signal, wherein the first step iThe image signal intensity of the equivalent incident flat wave is recorded as；
Calibrating a complex interface surface field of an equivalent incident plane wave set:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,for the complex aperture plane field distribution of the calibrated equivalent incident plane wave set at the antenna array element,for the complex port surface field distribution of the calibrated equivalent incident plane wave set at the port surface of the antenna array, +.>Expressed in terms ofA matrix of elements.
Imaging the complex port surface field of the calibrated equivalent incident plane wave set at the port surface of the antenna array:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,collecting image signals corresponding to complex aperture surface fields at the aperture surface of the antenna array for the calibrated equivalent incident plane waves;
image signals corresponding to complex aperture surface fields of the antenna array aperture surface according to the calibrated equivalent incident plane wave setFor the original image signal->And (3) performing cancellation treatment:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the image signal after cancellation.
As a preferred scheme, the method for accurately measuring the angle coordinates of other detected base stations, terminals or interference also comprises the steps of repeating the accurate angle measurement, imaging reconstruction and cancellation processes by adopting an iterative method until the influence of other base stations, terminals or interference signals in the cancelled image signals on the detection of other signals is reduced to an acceptable degree.
And 4, the first base station detects the image signals after the imaging cancellation, and detects and demodulates the signals of the other newly-appearing base stations or terminals by adopting the method of the step 2 in the method, so that the angle coordinates and transmission information of the other newly-appearing base stations and terminals are obtained.
The method of the invention is used for communication and signal detection, and can reduce the influence of large signals and strong interference on small signal detection, thereby improving the signal-to-noise ratio and increasing the communication distance.
In a third aspect, the present invention provides a communication apparatus comprising:
the device includes a processor, a memory, and a communication interface; wherein the memory is for storing one or more programs, the one or more programs comprising computer-executable instructions; when the device is operated, the processor executes computer-executable instructions stored in the memory to cause the device to perform any one of the methods of invention 1 or invention 2, or a hybrid method thereof.
In a fourth aspect, the present invention provides a base station, comprising:
the base station adopts any one of the methods of the invention 1 or the invention 2 or a mixed method thereof to communicate with other base stations or terminals;
the base station comprises a signal processing module and a receiving-transmitting module, wherein:
The signal processing module is used for carrying out imaging processing, beam forming or imaging cancellation on the received signals of other base stations or terminals and detecting and demodulating the signals of the other base stations or terminals;
the receiving and transmitting module is used for receiving the transmitting signals of other base stations or terminals; and for forming a spatial multi-beam transmit signal for communication with other base stations or terminals.
In a fifth aspect, the present invention provides a terminal, including:
the terminal is configured to communicate with the base station according to invention 4.
In a sixth aspect, the present invention provides a communication system comprising:
the base station is used for communicating with other base stations or terminals by adopting the base station disclosed in the invention 4;
the terminal of invention 5 is used for communicating with the base station.
In a seventh aspect, the present invention provides a computer-readable storage medium storing instructions comprising:
the instructions, when executed on a computer, cause the computer to perform the steps of the method of any one of invention 1 or invention 2, or a hybrid method thereof.
Further, the methods of the present invention may be used alone or in combination.
In summary, the communication method and device of the invention have the following characteristics:
The method, the device, the base station, the terminal, the system and the storage medium adopt an imaging method to process signals, and can rapidly obtain the space distribution image of the signals, thereby realizing rapid angle measurement and reducing the requirement on hardware operation resources; the invention adopts a multi-beam emission scheme with different emission beam energy, which can greatly reduce energy consumption; the invention adopts the imaging reconstruction and cancellation technology of large signals or interference, reduces the influence of the large signals and the strong interference on the detection of small signals, thereby improving the signal-to-noise ratio, being beneficial to increasing the communication distance and reducing the station distribution cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described, and it is obvious that the following drawings are only some embodiments described in the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a communication method according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart of a second communication method according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a communication device according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a base station composition structure according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a communication system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments and corresponding drawings. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and the present invention may be implemented or applied by different specific embodiments, and that various modifications or changes may be made in the details of the present description based on different points of view and applications without departing from the spirit of the present invention.
In the embodiments of the present application, the term "base station" includes, but is not limited to, a base station, node, access point, macro station, micro station, small station, high frequency station, low frequency station, relay station, mobile station, etc.; the term "terminal" includes, but is not limited to, a mobile station, fixed or mobile subscriber unit, pager, cellular telephone, personal digital assistant, computer, or other type of user device capable of operating in a wireless environment; the term "system" includes, but is not limited to, a communication system consisting of a plurality of terminals and base stations.
Meanwhile, it should be understood that the scope of the present invention is not limited to the following specific embodiments; it is also to be understood that the terminology used in the examples of the invention is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the invention.
Example 1: communication method
As shown in fig. 1, the method comprises the following steps:
step 1, a first base station receives signals of other base stations or terminals;
step 2, the first base station processes the received signals by adopting an imaging method to obtain image signals, and then detects and demodulates the image signals to obtain the angle coordinates and transmission information of other base stations or terminals;
and 3, the first base station forms a plurality of transmitting beams to communicate with other corresponding base stations or terminals simultaneously based on an imaging equivalent method according to the angle coordinates of the other base stations or terminals.
Further, in step 2:
the first base station processes the received signal by adopting an imaging method to obtain an image signal, then detects and demodulates the image signal to obtain the angle coordinates and transmission information of other base stations or terminals, and the method comprises the following steps:
the first base station adopts a digital beam forming technology or a rapid imaging technology to carry out imaging processing on the received signals, so as to obtain image signals of the received signals:
The method comprises the steps of weighting amplitude and phase of signals received by an antenna array by adopting a high-efficiency parallel algorithm, and then performing rapid imaging processing; the efficient parallel algorithm includes, but is not limited to, one-dimensional, two-dimensional or three-dimensional FFTs, IFFTs, non-uniform FFTs, sparse FFTs; taking two-dimensional FFT imaging as an example, the calculation method comprises the following steps:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,for calculating the obtained image signal +.>、/>For spectral domain coordinates, symbol->Representing an efficient parallel algorithm function->For signals received by the antenna array, < >>Weighting coefficients for an antenna array (including but not limited to uniform distribution, cosine weighting, hamming window, taylor distribution, chebyshev distribution, and hybrid weighting methods).
And resolving the angle coordinates corresponding to the image signals, wherein:
for the efficient parallel algorithm of the IFFT class, the calculation formula of the angle coordinate is as follows:
；
for the efficient parallel algorithm of FFT class, the calculation formula of the angle coordinate is as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,、/>the azimuth and elevation angle coordinates of other base stations or terminals with respect to the antenna array,wavenumber, lambda is wavelength, ">、 />The unit spacing of the antenna array unit in the horizontal and vertical directions is marked +.>Representing an arcsine function.
As an alternative to the imaging process, the digital beam forming technology may be used to perform the imaging process on the signals received by the antenna array, that is, by forming a plurality of spatial receiving beams to cover the communication airspace, arranging the signals received by all the receiving beams according to spatial distribution, and also obtaining the image signals received by the base station.
The first base station detects the image signals of the received signals so as to obtain the angle coordinates of other base stations or terminals corresponding to the first base station; demodulating the image signal of the received signal to obtain transmission information sent by other base stations or terminals; acquiring signal-to-noise ratio information of first base station signals received by other base stations or terminals according to the transmission information, or calculating the distance from the other base stations or terminals to the first base station by combining the positioning information of the first base station:
and detecting the signal of the image signal obtained by calculation, if the effective communication signal is detected, indicating that other base stations or terminals exist in a certain space direction, and obtaining the angle coordinates of the other base stations or terminals by extracting the angle coordinates of the corresponding positions of the image signal.
When detecting that an effective communication signal exists at a certain position of an image signal, demodulating the corresponding image signal, extracting transmission information of other base stations or terminals, and decoding the transmission information to obtain information of other base stations or terminals, positioning information of related base stations or terminals, and signal-to-noise ratio information of first base station signals received by other base stations or terminals.
And according to the positioning information of other base stations or terminals, calculating the distance from the other base stations or terminals to the first base station by combining the positioning information of the first base station.
As an alternative scheme for calculating the distance from other base stations or terminals to the first base station, a multi-base station cross positioning method can be adopted for calculation, that is, a plurality of (at least 2) base stations are adopted for carrying out the imaging processing on the same base station or terminal to be measured and extracting the angle coordinates of the same base station or terminal to be measured, and the distance from the base station or terminal to be measured to the first base station can be calculated by combining the positioning information of the base station.
Further, in step 3:
the first base station dynamically regulates and controls the energy intensity of a plurality of transmitting beams communicated with other base stations or terminals, so that the energy saving and the efficient utilization of the first base station are realized while the effective transmission of information is ensured.
The first base station forms a plurality of transmitting beams to communicate with other corresponding base stations or terminals simultaneously based on an imaging equivalent method according to the angle coordinates of the other base stations or terminals; the first base station dynamically regulates and controls the energy intensity of a plurality of transmitting beams communicated with other base stations or terminals, so that the energy saving and high-efficiency utilization are realized while the effective transmission of information is ensured:
the first base station calculates amplitude and phase weighting coefficients of the antenna array unit based on an imaging equivalent method according to angle coordinates and distances of other base stations or terminals, and forms a plurality of transmitting beams in space by controlling the amplitude and phase weighting coefficients of the antenna array unit; and the first base station simultaneously forms a plurality of transmitting beams to communicate with the corresponding other base stations or terminals according to the angle coordinates of the other base stations or terminals. And the power intensity of the multiple transmitting beams communicated with other base stations or terminals by the first base station is related to the distance between the other base stations or terminals and the first base station, the power intensity of the beam corresponding to the base station or terminal far away from the first base station is high, and the power intensity of the beam corresponding to the base station or terminal near the first base station is low.
Generating multi-beam emission based on an imaging equivalent method, wherein the multi-beam emission comprises the steps of generating an equivalent target, generating an antenna array equivalent port surface field, generating an antenna array port surface amplitude, generating a phase weighting coefficient and the like; when the first base station calculates the amplitude and phase weighting coefficients of the antenna array unit, the corresponding equivalent incident plane wave intensity is determined by utilizing the distances from other base stations or terminals to be communicated to the first base station, so that communication signals with different intensities are transmitted to other base stations or terminals with different distances.
Equivalent target generation means that corresponding is generated according to the measured information such as the angle coordinates, the distance and the like of other base stations or terminalsIs an equivalent object of (a). According to the antenna theory, a certain relation exists between the far-field pattern of the antenna and the image of the target, and the far-field pattern can be equivalently used as a far-field pattern corresponding to field distribution of a plurality of incident plane waves with different directions and different intensities on the port surface of the antenna array. Combining the distance information of other base stations or terminals obtained in the step 2, an equivalent incident plane wave set of the multi-beam directional diagram to be formed can be obtainedWherein->Respectively the firstiAngular coordinates of the other base station or terminal, +. >Is the firstiThe distance of the other base station or terminal from the first base station also represents the intensity of the equivalent incident plane wave.
The antenna array equivalent port surface field generation refers to the generation of an equivalent complex port surface field of an antenna array port surface according to an equivalent incident plane wave set. First, theiThe phases of the equivalent incident plane waves reaching the port surface of the antenna array are as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiThe phases of the incident waves of the equivalent incident plane waves at the antenna array units with the horizontal serial numbers of m and the vertical serial numbers of n, wherein m and n are serial numbers of the antenna array units in the horizontal direction and the vertical direction respectively, and the symbol +.>Representing a sine function.
Signal intensity ofThe ith equivalent incident plane wave of (a) reaches the equivalent complex port at the port face of the antenna arrayThe surface field is:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiEquivalent complex interface surface fields of the equivalent incident plane waves at the antenna array units with the horizontal serial number m and the vertical serial number n,jin units of imaginary numbers,eis Euler constant;
equivalent incident plane wave setThe equivalent complex interface field at the antenna array unit is:
；
wherein the symbols areRepresenting a summation operation.
Further, the amplitude and phase weighting coefficients of the antenna array unit are as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,weighting values for the amplitude of the antenna array elements, +. >For the phase weight of the antenna array element, symbol +.>Representing absolute value operation, sign->Representing the argument taking operation.
The method is adopted to generate multi-beam transmission, the energy of each beam is different, the energy is related to the distance between other base stations or terminals to be communicated, the distance between other base stations or terminals is far, the corresponding transmission beam energy is high, and the energy of the corresponding transmission beam is low, so that the energy utilization rate is improved, and the energy consumption of the base stations is reduced.
Further, in step 3, it is also possible to:
the first base station forms a plurality of transmitting beams to communicate with other corresponding base stations or terminals simultaneously based on an imaging equivalent method according to the angle coordinates of the other base stations or terminals; the first base station dynamically regulates and controls the energy intensity of a plurality of transmitting beams communicated with other base stations or terminals, so that the energy saving and high-efficiency utilization are realized while the effective transmission of information is ensured:
the transmission information sent by other base stations or terminals to the first base station comprises signal-to-noise ratio information;
the first base station demodulates the signal-to-noise ratio information of the first base station signals received by other base stations or terminals according to the transmission information of the other base stations or terminals;
The first base station determines the required signal-to-noise ratio requirement according to the types of other base stations or terminals, so as to determine the energy intensity adjusting coefficient of the corresponding transmitting wave beam;
the first base station generates an equivalent incident plane wave set of a corresponding multibeam directional diagram according to the measured angle coordinates of other base stations or terminalsWherein->Respectively the firstiAngular coordinates of the other base station or terminal, +.>Is the firstiThe energy intensity adjusting coefficients of the corresponding transmitting beams of other base stations or terminals;
generating an antenna array port surface according to the equivalent incident plane wave setIs equivalent to the complex interface field. First, theiThe phases of the equivalent incident plane waves reaching the port surface of the antenna array are as follows:
；/>
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiThe phases of the incident waves of the equivalent incident plane waves at the antenna array units with the horizontal serial numbers of m and the vertical serial numbers of n, wherein m and n are serial numbers of the antenna array units in the horizontal direction and the vertical direction respectively, and the symbol +.>Representing a sine function.
Signal intensity ofThe i-th equivalent incident plane wave reaches the equivalent complex port surface field of the port surface of the antenna array as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiEquivalent complex aperture surface fields of the equivalent incident plane waves at the antenna array units with the horizontal serial number m and the vertical serial number n.
Equivalent incident plane wave setThe equivalent complex interface field at the antenna array unit is:
；
wherein the symbols areRepresenting a summation operation.
Further, the amplitude and phase weighting coefficients of the antenna array unit are as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,weighting values for the amplitude of the antenna array elements, +.>For the phase weight of the antenna array element, symbol +.>Representing absolute value operation, sign->Representing the argument taking operation.
The method is adopted to generate multi-beam transmission, the energy of each beam is different and is related to the signal-to-noise ratio of other base stations or terminals to be communicated, the energy intensity of the transmitted beam is reduced for other base stations or terminals with higher signal-to-noise ratio, and the energy intensity of the transmitted beam is improved for other base stations or terminals with lower signal-to-noise ratio, so that the energy distribution and optimization are realized while each base station or terminal can effectively receive signals, the energy utilization efficiency is improved, and the energy consumption of the base station is reduced.
Further, in step 3, it is also possible to:
the first base station generates sending signals of different antenna array units by adopting a signal directional synthesis technology and combining information to be transmitted according to angle coordinates of other base stations or terminals based on an imaging equivalent method, so that directional multi-beam transmission corresponding to a plurality of different signals is formed in space, and a specific signal is sent to the specific other base stations or terminals:
By adopting the method, the first base station receives signals of other base stations or terminals, and processes the received signals by adopting an imaging method to obtain image signals, so as to detect and demodulate the image signals and obtain information such as angle coordinates, transmission information, positioning information and the like of the other base stations or terminals;
first generating reference signals to be sent to other base stations or terminals:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is of circumference rate>To be sent to the firstiReference signal of other base station or terminal, +.>For a complex signal envelope containing transmission information +.>Is the carrier frequency and t is time.
When multi-beam transmission is generated, a signal directional synthesis technology is adopted, so that directional synthesis of signals is realized and the signals are sent to other base stations or terminals in a designated direction. First, the multi-beam pattern to be synthesized is also equivalent to the incident plane wave setWherein->Respectively the firstiAngular coordinates of the other base stations or terminals.
First, theiThe phases of the equivalent incident plane waves reaching the port surface of the antenna array are as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiThe phases of the incident waves of the equivalent incident plane waves at the antenna array units with the horizontal serial numbers of m and the vertical serial numbers of n, wherein m and n are serial numbers of the antenna array units in the horizontal direction and the vertical direction respectively, and the symbol +. >Representing a sine function.
Unit intensity of firstiThe equivalent complex interface field of the equivalent incident plane wave reaching the antenna array interface is as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiAnd the equivalent incident plane waves are complex interface fields corresponding to the antenna array units with the horizontal serial numbers m and the vertical serial numbers n.
Modulating a reference signal to be transmitted by using equivalent complex interface surface field data, and transmitting the reference signal to the antenna array unit with a horizontal serial number m and a vertical serial number niThe signals of the other base stations or terminals are:
；
and summing all signals to be transmitted to other different base stations or terminals to obtain signals to be transmitted finally formed by each unit:
。
the method of the invention is adopted to generate multi-beam emission, each beam mainly comprises signal energy related to the object to be communicated, and the energy loss in other beams and directions is negligible, thereby improving the energy utilization rate and reducing the energy consumption of the base station.
Further, in step 3, it is also possible to:
the first base station adopts a signal orientation synthesis technology based on an imaging equivalence method, and when calculating the transmission signals of the antenna array unit, the corresponding equivalent incident plane wave intensity is corrected by utilizing the distance information of other base stations or terminals to be communicated or the signal-to-noise ratio information of the first base station signals received by the first base station, so that multi-beam communication signals with different intensities are emitted to different other base stations or terminals:
When multi-beam transmission is generated, a signal directional synthesis technology is adopted, so that directional synthesis of signals is realized and the signals are sent to other base stations or terminals in a designated direction. First, the multi-beam pattern to be synthesized is also equivalent to the incident plane wave setWherein->Respectively the firstiAngular coordinates of the other base station or terminal, +.>Is the firstiThe intensity of the equivalent incident plane wave can be determined according to the distance from other base stations or terminals to the first base station, and can also be determined according to the signal-to-noise ratio of the first base station signals received by other base stations or terminals:
when determining the intensity of the equivalent incident plane wave according to the distance from the other base station or terminal to the first base station, it is possible to take:
；
wherein the method comprises the steps ofIs the firstiThe distance of the other base stations or terminals to the first base station; />
When determining the intensity of the equivalent incident plane wave according to the signal-to-noise ratio of the first base station signal received by other base stations or terminals, it is possible to obtain:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiThe signal-to-noise ratio of the first base station signal received by the other base station or terminal,is the firstiThe minimum signal-to-noise ratio required by each other base station or terminal to meet the bit error rate requirements.
First, theiThe phases of the equivalent incident plane waves reaching the port surface of the antenna array are as follows:
；
Wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiThe phases of the incident waves of the equivalent incident plane waves at the antenna array units with the horizontal serial numbers of m and the vertical serial numbers of n, wherein m and n are serial numbers of the antenna array units in the horizontal direction and the vertical direction respectively, and the symbol +.>Representing a sine function.
Signal intensity ofIs the first of (2)iThe equivalent complex interface field of the equivalent incident plane wave reaching the antenna array interface is as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the firstiAnd the equivalent incident plane waves are complex interface fields corresponding to the antenna array units with the horizontal serial numbers m and the vertical serial numbers n.
Modulating reference signal to be transmitted by using equivalent complex interface surface field dataMaking the antenna array unit with the horizontal serial number m and the vertical serial number n to be sent to the firstiThe signals of the other base stations or terminals are:
；
and summing all signals to be transmitted to other different base stations or terminals to obtain signals to be transmitted finally formed by each unit:
。
the method of the invention is adopted to generate multi-beam emission, each beam mainly comprises signal energy related to an object to be communicated, the energy intensity of each beam is different, the energy utilization rate is further improved, and the energy consumption of the base station is further reduced.
Example 2: communication method
As shown in fig. 2, the method comprises the following steps:
step 10, the first base station receives signals of other base stations or terminals;
step 20, the first base station processes the received signals by adopting an imaging method to obtain image signals, and then detects and demodulates the image signals to obtain the angle coordinates and transmission information of other base stations, terminals or interferences;
step 30, the first base station accurately measures the angle coordinates of other detected base stations, terminals or interference, and carries out imaging reconstruction and cancellation on signals of other base stations, terminals or interference according to measurement results to obtain imaging signals after the imaging cancellation;
and 40, the first base station detects the image signals after the imaging cancellation, detects and demodulates the signals of the other newly-appearing base stations or terminals, and further obtains the angle coordinates and transmission information of the other newly-appearing base stations and terminals.
Step 10 and step 20, the first base station receives signals of other base stations or terminals, processes the received signals by adopting an imaging method to obtain image signals, and then detects and demodulates the image signals to obtain angle coordinates and transmission information of other base stations, terminals or interference:
the method of step 2 in the method of embodiment 1 is adopted, the first base station receives signals of other base stations or terminals, and the imaging method is adopted to perform imaging processing on the received signals to obtain original image signals:
；
Further detecting and demodulating the image signals to obtain the angle coordinates and transmission information of other base stations or terminals, and extracting the signal strength of the image signals corresponding to other base stations, terminals or interference signals, wherein the firstiThe image signal strength of each other base station, terminal or interference signal is recorded as。
Step 30, the first base station accurately measures the angle coordinates of other detected base stations, terminals or interference, and performs imaging reconstruction and cancellation on signals of other base stations, terminals or interference to obtain image signals after imaging cancellation:
and carrying out imaging operation on the antenna array receiving signals by adopting a differential beam imaging method:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is a difference beam image signal +.>And accurately solving the angle coordinates of other base stations, terminals or interference signals according to nulls of the image signals of the difference beams for the antenna array weighting coefficients corresponding to the difference beams.
As an alternative to accurate angle measurement, the angle coordinates of other base stations, terminals or interfering signals may also be accurately determined using direction of arrival estimation techniques, digital beam synthesis techniques, etc.
According to the angle coordinates obtained by accurate angle measurement, the method of step 3 in the method of embodiment 1 is adopted to equivalent the signals of other measured base stations, terminals or interference to the incident plane wave sets in different directions WhereinRespectively the firstiAngular coordinates of other base stations, terminals or interfering signals.
Further, reconstructing and imaging signals of other base stations, terminals or interference:
according to the angle coordinates of the equivalent incident plane waves, calculating the complex port surface field distribution of the unit intensity equivalent incident plane wave set at the antenna array unit as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,the complex interface surface field distribution of the unit intensity equivalent incident plane wave set at the antenna array unit.
The complex port surface field distribution of the unit intensity equivalent incident plane wave set on the antenna array port surface is as follows:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,the complex port surface field distribution of the unit intensity equivalent incident plane wave set on the port surface of the antenna array,expressed as +.>A matrix of elements.
Calculating an image signal according to complex port surface field distribution of unit intensity equivalent incident plane wave collection on the port surface of the antenna array:
；/>
wherein, the liquid crystal display device comprises a liquid crystal display device,image signals formed by the unit intensity equivalent incident plane wave set;
detecting an image signal formed by a unit intensity equivalent incident plane wave set, and extracting the signal intensity of the unit intensity equivalent incident plane wave set image signal, wherein the first stepiThe image signal intensity of the equivalent incident flat wave is recorded as ；
Calibrating a complex interface surface field of an equivalent incident plane wave set:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,for the complex aperture plane field distribution of the calibrated equivalent incident plane wave set at the antenna array element,for the complex port surface field distribution of the calibrated equivalent incident plane wave set at the port surface of the antenna array, +.>Expressed in terms ofA matrix of elements.
Imaging the complex port surface field of the calibrated equivalent incident plane wave set at the port surface of the antenna array:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,collecting image signals corresponding to complex aperture surface fields at the aperture surface of the antenna array for the calibrated equivalent incident plane waves;
image signals corresponding to complex aperture surface fields of the antenna array aperture surface according to the calibrated equivalent incident plane wave setFor the original image signal->And (3) performing cancellation treatment:
；
wherein, the liquid crystal display device comprises a liquid crystal display device,is the image signal after cancellation.
As a preferred scheme, the method for accurately measuring the angle coordinates of other detected base stations, terminals or interference also comprises the steps of repeating the accurate angle measurement, imaging reconstruction and cancellation processes by adopting an iterative method until the influence of other base stations, terminals or interference signals in the cancelled image signals on the detection of other signals is reduced to an acceptable degree.
And step 40, the first base station detects the image signals after the imaging cancellation, and adopts the method of step 2 in the method of the embodiment 1 to detect and demodulate the signals of the other newly-appearing base stations or terminals so as to obtain the angle coordinates and transmission information of the other newly-appearing base stations and terminals.
The method of the invention is used for communication and signal detection, and can reduce the influence of large signals and strong interference on small signal detection, thereby improving the signal-to-noise ratio and increasing the communication distance.
Example 3: communication device
As shown in fig. 3, the apparatus comprises a processor, a memory, and a communication interface; wherein the memory is for storing one or more programs, the one or more programs comprising computer-executable instructions; when the apparatus is running, the processor executes computer-executable instructions stored in the memory to cause the apparatus to perform any one of the methods of embodiment 1 or embodiment 2, or a hybrid method thereof.
Example 4: communication base station
The communication base station adopts any one of the methods of embodiment 1 or embodiment 2 or a mixed method thereof to communicate with other base stations or terminals;
as shown in fig. 4, the communication base station includes a signal processing module and a transceiver module, where:
the signal processing module is used for carrying out imaging processing, beam forming or imaging cancellation on the received signals of other base stations or terminals and detecting and demodulating the signals of the other base stations or terminals;
the receiving and transmitting module is used for receiving the transmitting signals of other base stations or terminals; and for forming a spatial multi-beam transmit signal for communication with other base stations or terminals.
Example 5: terminal
The terminal is used for communication with the base station described in embodiment 4.
Example 6: communication system
As shown in fig. 5, the communication system includes a base station and a terminal:
a base station, which is a base station (first base station) according to embodiment 4, for communicating with another base station (second base station) or a terminal (first terminal);
a terminal (first terminal) according to embodiment 5 is used for communication with the base station (first base station).
Example 7: computer readable storage medium
The computer readable storage medium stores instructions that, when run on a computer, cause the computer to perform the steps of the method of any one of embodiments 1 or 2, or a hybrid method thereof.
From the above description of embodiments, it will be apparent to those skilled in the art that the present invention may be implemented by means of software plus necessary hardware platforms. With such understanding, the above-described embodiments may be embodied in the form of a software product, which may be stored on a non-volatile storage medium (optical disk, USB flash disk, EPROM, hard disk, etc.), which includes instructions for causing a computer device (personal computer, server, or embedded device, etc.) to carry out the method according to an embodiment of the invention.
Finally, it should be noted that: the above description is only intended to illustrate the basic technical solution of the invention, not to limit it; although the invention has been described in detail with reference to the above, any person skilled in the art may modify or omit the above technical solutions or substitute some technical features equally, and these modifications or substitutions are included in the scope of protection of the present invention.

Claims (12)

1. A method of communication, comprising:
s1, a first base station receives signals of other base stations or terminals;
s2, the first base station processes the received signals by adopting an imaging method to obtain image signals, and then detects and demodulates the image signals to obtain the angle coordinates and transmission information of other base stations or terminals;
and S3, the first base station forms a plurality of transmitting beams to communicate with other corresponding base stations or terminals simultaneously based on an imaging equivalent method according to the angle coordinates of the other base stations or terminals.
2. The communication method according to claim 1, wherein,
in S2, the first base station processes the received signal by using an imaging method to obtain an image signal, which includes:
the first base station adopts a digital beam forming technology or a rapid imaging technology to carry out imaging processing on the received signals so as to obtain image signals of the received signals;
In S2, the detecting and demodulating the image signal by the first base station to obtain the angular coordinates and transmission information of other base stations or terminals, including:
the first base station detects the image signals of the received signals to obtain the angle coordinates of other base stations or terminals corresponding to the image signals; demodulating the image signal of the received signal to obtain transmission information sent by other base stations or terminals; and obtaining signal-to-noise ratio information of the first base station signals received by other base stations or terminals according to the transmission information, or calculating the distance from the other base stations or terminals to the first base station by combining the positioning information of the first base station.
3. A communication method according to claim 2, wherein,
in S3, the first base station forms a plurality of transmitting beams to communicate with the other corresponding base stations or terminals based on imaging according to the angular coordinates of the other base stations or terminals, which includes:
the first base station calculates amplitude and phase weighting coefficients of the antenna array unit based on an imaging equivalent method according to angle coordinates and distances of other base stations or terminals, and forms a plurality of transmitting beams in space by controlling the amplitude and phase weighting coefficients of the antenna array unit;
When the first base station calculates the amplitude and phase weighting coefficients of the antenna array unit, the corresponding equivalent incident plane wave intensity is determined by utilizing the distances from other base stations or terminals to be communicated to the first base station, so that communication signals with different intensities are transmitted to other base stations or terminals with different distances.
4. A communication method according to claim 2, wherein,
in S3, the first base station forms a plurality of transmitting beams to communicate with the other corresponding base stations or terminals based on imaging according to the angular coordinates of the other base stations or terminals, which includes:
the first base station calculates amplitude and phase weighting coefficients of the antenna array unit based on an imaging equivalent method according to angle coordinates and distances of other base stations or terminals, and forms a plurality of transmitting beams in space by controlling the amplitude and phase weighting coefficients of the antenna array unit;
when the first base station calculates the amplitude and phase weighting coefficients of the antenna array unit, the intensity of the equivalent incident plane wave corresponding to the signal-to-noise ratio of the first base station signals received by other base stations or terminals to be communicated is utilized to correct, so that the communication signals with different intensities are transmitted by other base stations or terminals with different distances.
5. A communication method according to claim 2, wherein,
in S3, the first base station forms a plurality of transmitting beams to communicate with the other corresponding base stations or terminals based on imaging according to the angular coordinates of the other base stations or terminals, which includes:
the first base station generates sending signals of different antenna array units by adopting a signal directional synthesis technology based on an imaging equivalent method and combining information to be transmitted according to the angle coordinates of other base stations or terminals, so that directional multi-beam transmission corresponding to a plurality of different signals is formed in space, and a specific signal is sent to the specific other base stations or terminals.
6. The communication method according to claim 5, comprising:
when the first base station calculates the transmission signals of the antenna array unit, the intensity of the corresponding equivalent incident plane wave is corrected according to the distance information of other base stations or terminals to be communicated or the signal-to-noise ratio information of the first base station signals received by the first base station, so that multi-beam communication signals with different intensities are transmitted to different other base stations or terminals.
7. A method of communication, comprising:
s10, a first base station receives signals of other base stations or terminals;
S20, the first base station processes the received signals by adopting an imaging method to obtain image signals, and then detects and demodulates the image signals to obtain angle coordinates and transmission information of other base stations, terminals or interferences;
s30, the first base station accurately measures the angle coordinates of other detected base stations, terminals or interference, and performs imaging reconstruction and cancellation on signals of the other base stations, terminals or interference according to measurement results to obtain imaging signals after the imaging cancellation;
s40, the first base station detects the image signals after the imaging cancellation, detects and demodulates the signals of the other newly-appearing base stations or terminals, and further obtains the angle coordinates and transmission information of the other newly-appearing base stations and terminals.
8. A communication device, comprising:
the device includes a processor, a memory, and a communication interface; wherein the memory is for storing one or more programs, the one or more programs comprising computer-executable instructions; the apparatus, when operated, executes computer-executable instructions stored in a memory to cause the apparatus to perform the method of any one of claims 1 to 7 or a hybrid thereof.
9. A base station, comprising:
The base station communicates with other base stations or terminals using the method of any one of claims 1 to 7 or a hybrid thereof;
the base station comprises a signal processing module and a receiving-transmitting module, wherein:
the signal processing module is used for carrying out imaging processing, beam forming or imaging cancellation on the received signals of other base stations or terminals and detecting and demodulating the signals of the other base stations or terminals;
the receiving and transmitting module is used for receiving the transmitting signals of other base stations or terminals; for forming a spatial multi-beam transmit signal for communication with other base stations or terminals.
10. A terminal, comprising:
the terminal being adapted to communicate with the base station of claim 9.
11. A communication system, comprising:
a base station employing the base station of claim 9 for communicating with other base stations or terminals;
a terminal employing the terminal of claim 10 for communicating with the base station.
12. A computer-readable storage medium storing instructions, comprising:
the instructions, when run on a computer, cause the computer to perform the steps of the method of any one of claims 1 to 7 or a hybrid method thereof.
CN202310566181.3A 2023-05-19 2023-05-19 Communication method, device, base station, system and storage medium Active CN116566456B (en)

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