CN109644163A

CN109644163A - Adjust method and the base station of aerial signal power

Info

Publication number: CN109644163A
Application number: CN201680088613.2A
Authority: CN
Inventors: 张鹏程
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-08-31
Filing date: 2016-08-31
Publication date: 2019-04-16
Also published as: WO2018040020A1

Abstract

The present embodiments relate to the methods for adjusting aerial signal power.Base station determines N number of first digital signal according to N number of baseband digital signal of acquisition, and the power of the signal is the sum of the Partial Power of each baseband digital signal in 4 baseband digital signals, the positive integer times that N is 4；According to N number of first digital signal, obtain identical N number of first radio frequency analog signal corresponding with the power of N number of first digital signal, to obtain N number of second radio frequency analog signal, the power of N number of second radio frequency analog signal is the sum of the power corresponding with base-band data signal identical in N number of first digital signal that N number of first radio frequency analog signal includes；The power of the corresponding baseband digital signal of the power of second radio frequency analog signal is identical；And the second radio frequency analog signal is sent by antenna, it is sent to the same antenna to realize multiple feed interchannel power and mutually converge, the limited problem of single feed channel rated power is overcome, greatly improves the power of multiaerial system.

Description

Method for adjusting antenna signal power and base station

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a method and a base station for adjusting antenna signal power.

Background

In the mobile communication network engineering design, the base station antenna is reasonably selected according to the actual conditions of the network such as the coverage requirement, the telephone traffic distribution, the anti-interference requirement, the network service quality and the like. The vertical dimension of a common antenna adopts a fixed single-drive, power division and weight network, namely the network is used for driving an antenna array with the same vertical dimension by a feed channel, and an antenna element on the vertical dimension equally divides the signal power in the feed channel according to the weight of the antenna element. Typically, after the base station antenna is selected, the downtilt of the base station antenna is also adjusted to adjust the coverage area of the base station antenna signal. At present, the downward inclination angle of the antenna is mainly adjusted in an electric adjusting mode.

In the prior art shown in fig. 1, the antennas adopt directional cross plus/minus 45 °, the polarization array has 4 columns, and 8 transmission channels are provided. The antenna enables an antenna oscillator of a horizontal dimension to generate a plurality of downward inclination angles through two groups of electric phase modulation units, so that the requirement of multiple scenes on the antenna coverage range is met, the two groups of electric phase modulation units respectively receive two analog signals sent by a Radio Remote Unit (RRU), the RRU receives two baseband digital signals sent by a baseband unit (BBU), and a channel for transmitting the signals by the RRU is a feed channel. However, the receiving and transmitting relationship of the feed channel of the RRU connecting to the corresponding antenna is fixed, and the rated power of each feed channel communicating with the electric phase modulation unit is also fixed, under the condition that the rated power of the feed channel is limited, because each feed channel corresponds to an antenna array, the signal power of multiple feed channels can only be transmitted to the radio frequency analog signal of each independent inclination angle respectively, so as to form an antenna group, that is, the grouped radio frequency analog signal can only be transmitted by the corresponding antenna. For example, the rated power of each feed channel of the RRU is 20W, the maximum power of the radio frequency analog signal transmitted by each group of antennas is also 20W, and correspondingly, the maximum power of the radio frequency analog signal received by each group of antennas is also 20W.

Therefore, in the prior art, the antenna of the base station cannot adjust the signal strength and the coverage area for different scenes, for example, for a large-area open scene, the antenna cannot enlarge the coverage area by improving the power of the transmitted radio frequency analog signal, so that poor experience is brought to a user.

Disclosure of Invention

The application describes a method and a base station for adjusting antenna signal power, which overcome the problem of limited rated power of a single feed channel.

In a first aspect, a method for adjusting antenna signal power is provided, which may include: the base station determines N first digital signals according to the acquired N baseband digital signals, wherein the power of the first digital signals is the sum of partial powers of each baseband digital signal in the 4 baseband digital signals, the partial power can be one half or one fourth of the power of the baseband digital signals, the 4 baseband digital signals are contained in the N baseband digital signals, N is a positive integer multiple of 4, then the base station performs analog-to-digital conversion and other processing on the N first digital signals to obtain N first radio-frequency analog signals, the power of the first radio-frequency analog signals is the same as the power of the first digital signals, and the first radio-frequency analog signals correspond to the first digital signals one to one. The base station acquires N second radio frequency analog signals according to the N first radio frequency analog signals, wherein the power of the N second radio frequency analog signals is the sum of the power of the N first radio frequency analog signals corresponding to the same baseband data signals in the N first digital signals; the N second radio frequency analog signals correspond to the N baseband digital signals, the power of any one of the N second radio frequency analog signals is the same as that of the corresponding baseband digital signal, and finally the base station sends the N second radio frequency analog signals through the antenna. Therefore, the power among a plurality of feed source channels is mutually converged and sent to the same antenna, the problem that the rated power of a single feed source channel is limited is solved, and the coverage area and the sent signal strength of the antenna are greatly improved.

In an optional implementation, before the base station determines the N first digital signals according to the acquired N baseband digital signals, the base station determines an M-dimensional unitary matrix according to the acquired N baseband digital signals, where M is a positive integer multiple of 4, and the base station determines the N first digital signals by multiplying a row matrix formed by the N baseband digital signals by a transpose of the M-dimensional unitary matrix. After the base station performs weighting processing on the N baseband digital signals through the unitary matrix, the obtained N first digital signals are distributed to the plurality of feed source channels, so that the power of the first digital signals received by the feed source channel of each RRU is lower than the rated power of the feed source channel, that is, flexible power distribution among multiple antennas and signal transmission are realized, and the problem that the rated power of a single feed source channel is limited is solved.

In an optional implementation, the determining, by the base station, the N first digital signals according to the N baseband digital signals specifically includes: the base station multiplies a row matrix formed by N baseband digital signals by the transpose of an N-dimensional unitary matrix to determine a first matrix, and extracts N first digital signals from the first matrix, so that flexible power distribution among multiple antennas and signal transmission are realized, and the problem of limited rated power of a single-feed-source channel is solved.

In an optional implementation, the obtaining, by the base station, N second radio frequency analog signals according to the N first radio frequency analog signals specifically includes: the base station passes the N first radio frequency analog signals through the bridge network to obtain N second radio frequency analog signals, and the power of any one second radio frequency analog signal in the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal. By the method, the power corresponding to the same baseband data signal in the N first digital signals in the first radio frequency analog signals distributed on the plurality of feed source channels can be superposed and converged to the corresponding antenna.

In an alternative implementation, the bridge network includes a first bridge sub-network and a second bridge sub-network. And the base station passes the N first radio frequency analog signals through the bridge network to obtain N second radio frequency analog signals. The power of the N second radio frequency analog signals is a sum of powers, included in the N first radio frequency analog signals, corresponding to the same baseband data signal in the N first digital signals, and specifically includes: and the base station passes the N first radio frequency analog signals through a first bridge sub-network to obtain N third radio frequency analog signals, wherein the power of each third radio frequency analog signal in the N third radio frequency analog signals is the sum of the powers, contained in the 2 first radio frequency analog signals, corresponding to the same baseband data signal in the 2 first digital signals. And the base station passes the N third radio frequency analog signals through a second bridge subnetwork to obtain N second radio frequency analog signals, wherein the N second radio frequency analog signals correspond to the N baseband digital signals, and the power of any one second radio frequency analog signal in the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal.

In an alternative implementation, the first bridge sub-network and the second bridge sub-network may each include two co-frequency combiners.

In an alternative implementation, before the N baseband digital signals are subjected to the unitary matrix weighting process, the base station may expand the coefficients of the baseband digital signals to increase the power of the baseband digital signals, thereby increasing the coverage area of the antenna and the strength of the transmitted signals.

In a second aspect, another method of adjusting antenna signal power is provided, which may include: the base station receives N radio frequency analog signals, wherein N is a positive integer multiple of 4. The base station obtains N first radio frequency analog signals according to the N radio frequency analog signals, wherein the power of the first radio frequency analog signals is the sum of partial powers of each radio frequency analog signal in the 4 radio frequency analog signals, the partial powers can be one half or one fourth of the power of a baseband digital signal, and the 4 radio frequency analog signals are contained in the N radio frequency analog signals. And then the base station acquires N first digital signals according to the N first radio frequency analog signals, wherein the power of the first digital signals is the same as that of the first radio frequency analog signals, and the first radio frequency analog signals correspond to the first digital signals one to one. And finally, the base station acquires N baseband digital signals from the N first digital signals, wherein the N baseband digital signals correspond to the N radio frequency analog signals, and the power of any one baseband digital signal in the N baseband digital signals is the same as that of the corresponding radio frequency analog signal. Therefore, the power among a plurality of feed source channels is mutually converged and sent to the same antenna, the problem that the rated power of a single feed source channel is limited is solved, and the coverage area and the received signal strength of the antenna are greatly improved.

In an optional implementation, the obtaining, by the base station, N first radio frequency analog signals according to the N radio frequency analog signals specifically includes: the base station passes the N radio frequency analog signals through a bridge network to obtain N first radio frequency analog signals, where the bridge network may include a first bridge sub-network and a second bridge sub-network. And the base station acquires N second radio frequency analog signals through a first bridge sub-network according to the N radio frequency analog signals, wherein the power of any one of the N second radio frequency analog signals is the sum of half the power of each of the 2 radio frequency analog signals. And the base station passes the N second radio frequency analog signals through a second bridge sub-network to obtain N first radio frequency analog signals, wherein the power of any one of the N first radio frequency analog signals is the sum of partial powers of each of the 4 radio frequency analog signals. The method can distribute the power of N radio frequency analog signals on a plurality of feed source channels, thereby enabling the signals to be transmitted on the feed source channels.

In an optional implementation, the obtaining, by the base station, the baseband digital signal from the first digital signal specifically includes: the base station carries out matrixing processing on the first digital signal to obtain a first matrix. The base station decomposes the first matrix into a row matrix formed by the second digital signal and multiplies the row matrix by the transpose of the M-dimensional unitary matrix to extract the second digital signal, wherein the second digital signal is a baseband digital signal, and M is a positive integer multiple of 4. By the method, the power corresponding to the same radio frequency analog signal in the N radio frequency analog signals contained in the N first digital signals on the N feed channels is superposed in a power mode, so that the problem that the rated power of a single feed channel is limited is solved.

In a third aspect, a base station is provided, which has the functionality to implement the behavior of the base station in practice according to the method of claims 1-6 above. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a fourth aspect, there is provided another base station having the functionality to implement the behavior of the base station in practice according to the method of claims 7-10 above. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a fifth aspect, there is provided another base station corresponding to the third aspect, where the base station may include: processing circuitry and a transmitter. The processing circuit is used for determining N first digital signals according to the acquired N baseband digital signals, the power of the first digital signals is the sum of partial powers of each baseband digital signal in the 4 baseband digital signals, the 4 baseband digital signals are contained in the N baseband digital signals, and N is a positive integer multiple of 4. The processing circuit is further configured to obtain N first radio frequency analog signals according to the N first digital signals, where power of the first radio frequency analog signals is the same as power of the first digital signals, and obtain N second radio frequency analog signals according to the N first radio frequency analog signals, where power of the N second radio frequency analog signals is a sum of powers, included in the N first radio frequency analog signals, corresponding to the same baseband data signals in the N first digital signals. The N second radio frequency analog signals correspond to the N baseband digital signals, and the power of any one of the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal. The transmitter is used for transmitting the N second radio frequency analog signals through the antenna.

A sixth aspect provides another base station corresponding to the fourth aspect, which may include: a receiver and a processing circuit. The receiver is used for the base station to receive N radio frequency analog signals, wherein N is a positive integer multiple of 4. The processing circuit is used for acquiring N first radio frequency analog signals according to N radio frequency analog signals received by the receiver, wherein the power of the first radio frequency analog signals is the sum of partial powers of each of the 4 radio frequency analog signals, the 4 radio frequency analog signals are contained in the N radio frequency analog signals, and acquiring N first digital signals according to the N first radio frequency analog signals, and the power of the first digital signals is the same as the power of the first radio frequency analog signals. The processing circuit is further configured to obtain N baseband digital signals from the N first digital signals, where the N baseband digital signals correspond to the N radio frequency analog signals, and a power of any one of the N baseband digital signals is the same as a power of the corresponding radio frequency analog signal.

In an alternative implementation, the base station may further comprise a memory, coupled to the processing circuitry, for storing necessary program instructions and data for the base station.

In yet another aspect, a computer storage medium is provided for storing computer software instructions for the base station, which includes a program designed to perform the above aspects.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a prior art adjusting antenna system;

fig. 2 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an antenna according to an embodiment of the present invention;

fig. 4 is a flowchart of a method for adjusting antenna signal power according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a bridge network unit according to an embodiment of the present invention;

fig. 6 is a flowchart of another method for adjusting the power of an antenna signal according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of a possible structure of a base station according to an embodiment of the present invention;

fig. 8 is a schematic diagram of another possible structure of a base station according to an embodiment of the present invention;

fig. 9 is a second schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 10 is a second schematic structural diagram of another possible base station according to the embodiment of the present invention;

Detailed Description

the technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

The method for electrically adjusting the antenna signal power can be suitable for a Long Term Evolution (LTE) system or other wireless communication systems adopting various wireless access technologies, such as systems adopting access technologies of code division multiple access, frequency division multiple access, time division multiple access, orthogonal frequency division multiple access, single carrier frequency division multiple access and the like. In addition, the method can also be applied to a subsequent evolution system using an LTE system, such as a fifth generation 5G system and the like.

In the base station shown in fig. 2, the base station may include a baseband processing unit BBU 110, a radio remote unit RRU 120, a bridge network 130, an electric phase modulation unit 140, and an antenna 150.

The antenna 150 is used for receiving radio frequency analog signals of a user and transmitting radio frequency analog signals to the user, and may include multiple groups of sub-antennas.

The BBU 110 and the RRU 120 use optical fiber transmission, and the RRU 120, the bridge network 130 and the electric phase modulation unit 140 are connected to the antenna 150 through a coaxial cable. BBU 110 may be a 4-input 4-output unit, or a 16-input 16-output unit composed of a plurality of BBUs 110; the RRU 120 may be a 4-input and 4-output unit, or a 16-input and 16-output unit composed of a plurality of RRUs 120.

The electric phase modulation unit 140 can adjust the downward inclination angle of the antenna, so that the radio frequency analog signals received and transmitted by the antenna have different coverage ranges, thereby being suitable for various application scenes, such as open scenes in rural areas or dense scenes in cities and towns. If the antenna is divided into 4 groups of sub-antennas, each group of sub-antennas is configured with an electric phase modulation unit to adjust the inclination angle of each group of sub-antennas. The motor-driven phase modulation unit 140 may be a mechanism composed of a motor (e.g., a stepping motor) and a driving mechanism including a microstrip line.

The bridge network 130 may perform power aggregation on the radio frequency analog signal sent by the RRU 120, and may perform power distribution on the radio frequency analog signal received by the antenna, thereby implementing adjustment of the power of the antenna transmitting and receiving signal under the condition that the rated power of the feed channel of the RRU 120 is limited.

The bridge network 130 may be a network device composed of 4 same-frequency combiners (also called 90 ° bridges), or a network device composed of 4M same-frequency combiners, where M is a positive integer. The same-frequency combiner can continuously sample the power of the transmitted radio frequency analog signal in a certain determined direction along the transmission line, and distributes the power of the input radio frequency analog signal into two radio frequency analog signals which are mutually equal in amplitude and have a phase difference of 90 degrees, so that the transmission of the radio frequency analog signals is realized. The process of power distribution may also be referred to as power splitting processing, that is, the bridge network 130 may implement power distribution of the radio frequency analog signals, and conversely, the bridge network 130 may also implement power aggregation of the radio frequency analog signals.

It can be understood that the on-frequency combiner changes the power value of the radio frequency analog signal by changing the amplitude value of the radio frequency analog signal. Bridge network 130 may also be comprised of other bridge devices capable of performing the above-described functions. Meanwhile, the above-mentioned composition form of the bridge network device does not constitute a limitation on the structure of the bridge network, and may be constituted by other bridge devices.

The RRU 120 receives the radio frequency analog signal processed by the bridge network 130, and sends the received radio frequency analog signal to the BBU 110 after performing down conversion, amplification, analog-to-digital conversion, digital signal down conversion, matched filtering, and the like. Correspondingly, the downlink baseband digital signal sent by the BBU 110 is subjected to spreading, filtering, digital-to-analog conversion, radio frequency analog signal up-conversion, and the like, and then sent to the antenna. The number of the BBUs 110 and the RRUs 120 can be determined by practical situations.

It should be noted that one BBU 110 can support multiple RRUs 120, and the coverage of the antenna can be well adjusted by the multi-feed channel scheme combining the BBU 110 and the RRUs 120.

Before the base station receives or sends the radio frequency analog signal, the base station can group the antennas, adjust the downward inclination angle of each group of sub-antennas and obtain N groups of sub-antennas, wherein N is a positive integer multiple of 4.

The base station may group the antennas of the base station according to factors such as different application scenarios, a distance between the antennas, and a coverage area of the antennas, and each group of sub-antennas may include at least one antenna element. The coverage range and direction of the antenna are changed by adjusting the downward inclination angle of each group of sub-antennas, so that the antenna of the base station is suitable for various application scenes. In fig. 3, the antenna includes 8 sets of polarization arrays, and the corresponding feed channels have 16 antenna elements. The base station divides the antennas into 4 groups to form 4 groups of sub-antennas, each group of sub-antennas may include 4 elements, each element corresponds to one transmission channel, that is, each group of antennas may include 4 transmission channels, for example, the transmission channel of the first group of antennas may include channel 1, channel 2, channel 3, and channel 4.

Furthermore, the base station receives different control signals through the stepping motor, drives the stepping motor to generate different rotation angles, so that microstrip lines with different lengths are generated on the transmission machine, each group of sub-antennas obtains different carrier air interface phases, and each group of sub-antennas obtains a new downward inclination angle through coherent processing of the different carrier air interface phases, so that the purpose of flexibly adjusting the downward inclination angle of the antenna is achieved.

The method of adjusting the power of the antenna for receiving and transmitting the rf analog signal will be described in detail below.

Fig. 4 is a method for adjusting antenna signal power according to an embodiment of the present invention. The execution subject of the method may be a base station, as shown in fig. 3, and the method may include:

step 410, the base station determines N first digital signals according to the acquired N baseband digital signals, where the power of the first digital signal is the sum of partial powers of each baseband digital signal in the 4 baseband digital signals, the 4 baseband digital signals are included in the N baseband digital signals, and N is a positive integer multiple of 4.

Optionally, before the base station determines the N first digital signals, the base station determines an M-dimensional unitary matrix according to the acquired N baseband digital signals, where M is a positive integer multiple of 4.

In the digital domain, the base station determines the dimension and number of the unitary matrix according to the number of the baseband digital signals. If the base station acquires 4 baseband digital signals, the base station may group the 4 baseband digital signals into a group and determine a unitary matrix of 4 × 4. Or, the base station acquires 8 baseband digital signals, and the base station may group the 8 baseband digital signals into a group and determine an 8 × 8 unitary matrix.

It can be understood that when the base station acquires 8 baseband digital signals, the base station may also divide the 8 baseband digital signals into two groups of 4 baseband digital signals, and at this time, the base station may determine two unitary matrices of 4X4, where each unitary matrix of 4X4 corresponds to one group of baseband digital signals.

Then, the base station determines N first digital signals according to the M-dimensional unitary matrix and the N baseband digital signals.

A base station multiplies a row matrix formed by N baseband digital signals by the transposition of an M-dimensional unitary matrix to determine a first matrix; then, the base station extracts N first digital signals from the first matrix, and after the base station performs weighting processing on the N baseband digital signals through the unitary matrix, the obtained N first digital signals are distributed to the plurality of feed source channels, so that the power of the first digital signals received by the feed source channel of each RRU is lower than the rated power of the feed source channel, that is, flexible power distribution among multiple antennas and signal transmission are realized, and the problem of limited rated power of a single feed source channel is solved.

4 baseband digital signals in the N baseband digital signals form a group, and the amplitude of the N first digital signals extracted after matrix multiplication is a partial amplitude of each baseband digital signal in the 4 baseband digital signals, that is, the power of each first digital signal is the sum of partial powers of each baseband digital signal in the 4 baseband digital signals.

In one example, the form of multiplication of a row matrix of 4 baseband digital signals by a transpose of a 4X 4-dimensional unitary matrix can be expressed as:

where denotes the amplitude of the first digital signal, a, b, c and d denote 4 different baseband digital signals, the imaginary part of j is a negative integer 1, and T denotes the transpose of the matrix.

After multiplication, the first matrix is obtained as follows:

the base station extracts 4 first digital signals from the first matrix, and the sum of the powers of the 4 first digital signals is the sum of partial powers of each of the 4 baseband digital signals.

Therefore, the base station obtains N first digital signals by weighting the N baseband digital signals through the unitary matrix, and distributes the obtained N first digital signals to the plurality of feed source channels, so that the power of the first digital signals received by the feed source channel of each RRU is lower than the rated power of the feed source channel, that is, the flexible power distribution among multiple antennas and the signal transmission are realized, the problem of limited rated power of a single feed source channel is solved, and the coverage area of the antennas and the strength of the transmitted signals are greatly improved.

Step 420, the base station obtains N first radio frequency analog signals according to the N first digital signals, and the power of the first radio frequency analog signals is the same as the power of the first digital signals.

The base station performs analog-to-digital conversion, matrixing processing, digital signal frequency conversion, matched filtering and the like on the first digital signal to obtain a corresponding first radio frequency analog signal. The power of the first radio frequency analog signal is the same as the power of the first digital signal, that is, the sum of the power of the first radio frequency analog signal and the partial power of each baseband digital signal in the 4 baseband digital signals is the same, and the first radio frequency analog signal and the first digital signal are in one-to-one correspondence.

In one example, after performing analog-to-digital conversion, matrixing processing, digital signal frequency conversion, matched filtering, etc., on the 4 first digital signals, corresponding 4 first radio frequency analog signals and

step 430, the base station obtains N second radio frequency analog signals according to the N first radio frequency analog signals, where the power of the N second radio frequency analog signals is the sum of powers, included in the N first radio frequency analog signals, corresponding to the same baseband data signal in the N first digital signals;

the base station can obtain N second radio frequency analog signals through the bridge network according to the N first radio frequency analog signals, the N second radio frequency analog signals correspond to the N baseband digital signals, and the power of any one of the N second radio frequency analog signals is the same as that of the corresponding baseband digital signal. The power corresponding to the same baseband data signal in the N first digital signals in the first radio frequency analog signals distributed on the plurality of feed source channels can be superposed through the bridge network and converged to the corresponding antenna.

The bridge network may include a first bridge sub-network and a second bridge sub-network, and the first bridge sub-network and the second bridge sub-network may respectively include 2 same-frequency combiners (also referred to as 90 ° bridges), and a matrix form of the same-frequency combiners may be expressed as where a parameter j represents an imaginary unit, an imaginary part of j is a positive integer 1, and correspondingly, an imaginary part of-j is a negative integer 1.

The base station enables the N first radio frequency analog signals to pass through 2 same-frequency combiners in the first bridge subnetwork to obtain N third radio frequency analog signals, wherein the power of any one third radio frequency analog signal in the N third radio frequency analog signals is the sum of the powers, contained in the 2 first radio frequency analog signals, corresponding to the same baseband data signals in the 2 first digital signals.

The base station passes the N third radio frequency analog signals through 2 same-frequency combiners in the second bridge subnetwork to obtain N second radio frequency analog signals, wherein the N second radio frequency analog signals correspond to the N baseband digital signals (for example, the baseband digital signals are a, b, and c, and the corresponding second radio frequency analog signal is A, B, C), and the power of any one of the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal.

Therefore, the base station superposes the power of the N first radio frequency analog signals through the bridge network, and the obtained N second radio frequency analog signals can have the same power as the corresponding baseband digital signals.

It can be understood that the bridge network transmits N second radio frequency analog signals to the antenna elements through the feed channel, and since one bridge network can only transmit 4 second radio frequency analog signals to 4 antenna elements (one element for each group of antennas), the number of the elements of each group of antennas is the same as that of the bridge network.

Fig. 5 is a schematic diagram of a bridge network according to the present invention. In fig. 5, the bridge network may include a first bridge sub-network and a second bridge sub-network. The first bridge sub-network and the second bridge sub-network respectively comprise 2 same-frequency combiners.

The base band digital signals acquired by the base station are a signals, b signals, c signals and d signals respectively. 4 first digital signals obtained by baseband digital signals are summed with corresponding 4 first radio frequency analog signals

The base station utilizes 2 same-frequency combiners in the first bridge subnetwork to perform inverse processing of power distribution, namely power superposition on the 4 first radio frequency analog signals.

Because the same-frequency combiner is 2-input and 2-output, the same-frequency combiner can superpose the power of any two first radio-frequency analog signals in the received 4 first radio-frequency analog signals, if and the matrix according to the same-frequency combiner, 4 third analog signals and the sum are obtained, because the amplitude of the third radio frequency analog signal is changed from the multiple to the multiple relative to the amplitude of the first radio frequency analog signal and the power is changed from the multiple to the multiple, if the amplitude of the first radio frequency analog signal is the power, which is processed by the same-frequency combiner, and the amplitude of the third radio frequency analog signal is the power, it can be understood that the power of each third radio frequency analog signal in the 4 third radio frequency analog signals is the sum of the powers, which are included in the 4 first radio frequency analog signals and correspond to the same baseband data signal in the 2 first digital signals, such as the sum of the powers, which correspond to the same a signal in the 2 first digital signals;

the base station utilizes 2 same-frequency combiners in the second bridge sub-network to perform power superposition on the 4 third radio frequency analog signals again, each same-frequency combiner in the second bridge sub-network receives 2 third analog signals generated by different same-frequency combiners in the first bridge sub-network and performs power superposition processing on the received 2 third analog signals by each same-frequency combiner in the second bridge sub-network, and the obtained 4 second analog signals are respectively an A signal, a B signal, a C signal and a D signal. The 4 second rf analog signals correspond to 4 baseband digital signals, that is, the a signal, the B signal, the C signal, and the D signal correspond to the a signal, the B signal, the C signal, and the D signal one to one, and the power of each second rf analog signal is the same as the power of the corresponding baseband digital signal.

Therefore, the power superposition is carried out on the first radio frequency analog signals distributed to the plurality of feed source channels through the bridge network, the second radio frequency analog signals with the same power as the baseband digital signals are obtained, and the RRU feed source channels are sent to the corresponding group of antennas after the power mutual superposition.

Step 440, the base station transmits N second rf analog signals through the antenna.

In the method provided by the embodiment of the present invention, a base station determines N first digital signals according to N acquired baseband digital signals, where the power of the first digital signal is the sum of partial powers of each baseband digital signal in 4 baseband digital signals, and N is a positive integer multiple of 4; and then obtaining N first radio frequency analog signals with the same power as the first digital signals according to the N first digital signals, and obtaining N second radio frequency analog signals through a bridge network, wherein the power of the N second radio frequency analog signals is the sum of the powers, corresponding to the same baseband data signals in the N first digital signals, of the N first radio frequency analog signals, the N second radio frequency analog signals correspond to the N baseband digital signals, and the power of any one second radio frequency analog signal in the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal. And finally, the base station sends N second radio frequency analog signals through the antenna.

The first digital signal is modulated, mixed, divided and amplified to obtain a first radio frequency analog signal, and the first radio frequency analog signal is transmitted on a feed channel, and the N power division analog signals are superposed by a bridge network with an inverse transformation relation to the unitary matrix, and then converged to N groups of corresponding antennas.

Furthermore, in the digital domain, before N baseband digital signals are weighted by the unitary matrix, the coefficients of the baseband digital signals are expanded, for example, the coefficient of the a signal is expanded by 2 times to 2a, which can improve the power of the baseband digital signals.

Therefore, the method can adjust the power of the antenna signal more flexibly, and realizes mutual convergence of the power among a plurality of feed source channels and sending the power to the same antenna through the weighting processing of the base band digital domain unitary matrix and the inverse processing of the unitary matrix of the radio frequency analog domain bridge network, thereby overcoming the problem that the rated power of the single feed source channel is limited, and greatly improving the power of the antenna for receiving and sending the signal.

Corresponding to the method for adjusting the power of the signal transmitted by the antenna shown in fig. 3, the invention also provides another method for adjusting the power of the signal received by the antenna.

Fig. 6 is a diagram illustrating another method for adjusting the power of an antenna signal according to an embodiment of the present invention. The execution subject of the method may be a base station, as shown in fig. 6, and the method may include:

step 610, the base station receives N radio frequency analog signals, where N is a positive integer multiple of 4.

The base station may receive N rf analog signals through N groups of sub-antennas with different/same downtilt angles.

Step 620, the base station obtains N first radio frequency analog signals according to the N radio frequency analog signals, where the power of the first radio frequency analog signal is the sum of partial powers of each of the 4 radio frequency analog signals, and the 4 radio frequency analog signals are included in the N radio frequency analog signals.

The base station obtains N first radio frequency analog signals by passing N radio frequency analog signals through a bridge network, where the power of the first radio frequency analog signal is the sum of partial powers of each of 4 radio frequency analog signals, the bridge network may include a first bridge sub-network and a second bridge sub-network, the first bridge sub-network and the second bridge sub-network may respectively include 2 same-frequency combiners (also referred to as 90 ° bridges), and a matrix form of the same-frequency combiners may be expressed as where a parameter j represents an imaginary unit, an imaginary part of j is a positive integer 1, and correspondingly, an imaginary part of-j is a negative integer 1.

The base station enables the N radio frequency analog signals to pass through the first bridge sub-network to obtain N second frequency analog signals, wherein the power of any one of the N second radio frequency analog signals is the sum of half the power of each of the 2 radio frequency analog signals.

And the base station passes the N second radio frequency analog signals through a second bridge sub-network to obtain N first radio frequency analog signals, wherein the power of any one of the N first radio frequency analog signals is the sum of partial powers of each of the 4 radio frequency analog signals.

Therefore, the base station equally distributes the power of the received radio frequency analog signal through the bridge network, and the distributed first radio frequency analog signal enters the RRU through the feed channel. Therefore, under the conditions that the power of the radio frequency analog signal received by the base station antenna is high and the rated power of the single feed channel of the RRU is limited, the power of the radio frequency analog signal is distributed by the bridge network, and the power of the distributed first radio frequency analog signal is lower than the rated power of the single feed channel, that is, the distributed first radio frequency analog signal can be transmitted through the feed channel.

It should be noted that the process of obtaining the N first radio frequency analog signals by the base station passing through the bridge network is the inverse process of the processing process shown in fig. 5, and is not described herein again.

Step 630, the base station obtains N first digital signals according to the N first radio frequency analog signals, and the power of the first digital signals is the same as the power of the first radio frequency analog signals.

The base station performs analog-to-digital conversion, matrixing processing, digital signal frequency conversion, matched filtering and the like on the first radio frequency analog signal to obtain a corresponding first digital signal. The power of the first digital signal is the same as that of the first radio frequency analog signal, that is, the sum of the power of the first digital signal and the partial power of each radio frequency analog signal in the 4 radio frequency analog signals is the same, and the first radio frequency analog signal and the first digital signal are in one-to-one correspondence.

In one example, in combination with the content shown in fig. 5, if the first analog signals are sum-and-analog converted, digital signal down-conversion, matched filtering, etc., respectively, the sum-and-digital converted first digital signals are obtained

Step 640, the base station obtains N baseband digital signals from the N first digital signals, where the N baseband digital signals correspond to the N radio frequency analog signals, and the power of any one of the N baseband digital signals is the same as the power of the corresponding radio frequency analog signal.

The base station carries out matrixing processing on the first digital signal to obtain a first matrix, then decomposes the first matrix into a row matrix formed by a second digital signal and multiplies the row matrix by an M-dimensional unitary matrix transpose to extract the second digital signal, wherein the second digital signal is a baseband digital signal, and M is a positive integer multiple of 4, so that power superposition is carried out on power contained in N first digital signals on N feed channels and corresponding to the same radio frequency analog signal in the N radio frequency analog signals, and the problem that the rated power of a single feed channel is limited is solved.

In one example, the base station performs matrixing on the acquired 4 first digital signals to obtain a first matrix as follows:

the base station decomposes the first matrix in the digital domain into the form of a row matrix of the second digital signal multiplied by a 4X4 unitary matrix transpose:

and the base station respectively extracts the second digital signals from the row matrix formed by the second digital signals, wherein the second digital signals are baseband digital signals.

In the method provided by the embodiment of the present invention, the base station receives N radio frequency analog signals, where N is a positive integer multiple of 4, and then obtains N first radio frequency analog signals according to the N radio frequency analog signals, where the power of the first radio frequency analog signal is the sum of partial powers of each of the 4 radio frequency analog signals, so as to obtain N first digital signals, where the power of the first digital signal is the same as the power of the first radio frequency analog signal. And finally, the base station acquires N baseband digital signals from the N first digital signals, wherein the N baseband digital signals correspond to the N radio frequency analog signals, and the power of any one baseband digital signal in the N baseband digital signals is the same as that of the corresponding radio frequency analog signal.

That is, the base station maps N rf analog signals received by N groups of antennas differently through a bridge network including a unitary matrix transform relationship in an analog domain to obtain first rf analog signals, and distributes the first rf analog signals to a plurality of feed channels, so that the plurality of feed channels obtain powers of the N first rf analog signals together, and then modulates, mixes, matrixing, and the like the first rf analog signals in the feed channels, and finally obtains corresponding baseband digital signals in a digital domain.

Corresponding to the method for adjusting the antenna signal power of fig. 4, an embodiment of the present invention provides a base station.

Fig. 7 shows a schematic diagram of a possible structure of the base station involved in the above embodiment. As shown in fig. 7, the base station may include: a receiving unit 700, a processing unit 710 and a transmitting unit 720.

A receiving unit 700, configured to obtain N baseband digital signals.

The processing unit 710 is further configured to determine N first digital signals according to the acquired N baseband digital signals, where the power of the first digital signal is a sum of partial powers of each of the 4 baseband digital signals, the 4 baseband digital signals are included in the N baseband digital signals, and N is a positive integer multiple of 4.

The processing unit 710 is further configured to obtain N first radio frequency analog signals according to the N first digital signals, where power of the first radio frequency analog signal is the same as power of the first digital signal.

Acquiring N second radio frequency analog signals according to the N first radio frequency analog signals, wherein the power of the N second radio frequency analog signals is the sum of the power of the N first radio frequency analog signals corresponding to the same baseband data signals in the N first digital signals; the N second radio frequency analog signals correspond to the N baseband digital signals, and the power of any one of the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal.

A transmitting unit 720, configured to transmit the N second radio frequency analog signals through the antenna.

The functions of the functional modules of the base station in the embodiment of the present invention may be implemented by the method steps provided in fig. 4, and therefore, the detailed working process of the base station provided in the present invention is not repeated herein.

Corresponding to the above-mentioned another method for adjusting the antenna signal power of fig. 6, an embodiment of the present invention further provides a base station.

Fig. 8 shows another possible structure diagram of the base station involved in the above embodiment. As shown in fig. 8, the base station may include: a receiving unit 800 and a processing unit 810.

A receiving unit 800, configured to receive N radio frequency analog signals by a base station, where N is a positive integer multiple of 4;

the processing unit 810 is configured to obtain N first radio frequency analog signals according to the N radio frequency analog signals received by the receiving unit 800, where the power of the first radio frequency analog signal is a sum of partial powers of each of the 4 radio frequency analog signals, the 4 radio frequency analog signals are included in the N radio frequency analog signals, and obtain N first digital signals according to the N first radio frequency analog signals, where the power of the first digital signals is the same as the power of the first radio frequency analog signals.

The processing unit 810 is further configured to obtain N baseband digital signals from the N first digital signals, where the N baseband digital signals correspond to the N radio frequency analog signals, and power of any one baseband digital signal in the N baseband digital signals is the same as power of the corresponding radio frequency analog signal.

The functions of the functional modules of the base station in the embodiment of the present invention may be implemented by the method steps provided in fig. 6, and therefore, the detailed working process of the base station provided in the present invention is not repeated herein.

Corresponding to fig. 7, an embodiment of the present application further provides a base station.

Fig. 9 is a second schematic diagram of a base station according to an embodiment of the present invention. As shown in fig. 9, the base station includes: an antenna 910 and processing circuitry 920.

The antenna 910 is used for supporting transmission and reception of information between the base station and the terminal, and for supporting radio communication between the terminal and other terminals. The processing circuit 920 is configured to perform corresponding processing on signals transmitted and received by the antenna 910. The processing circuit 920 may include a bridge network 921, a radio remote unit RRU 922, and a baseband processing unit BBU 923.

The base station may also include a memory 930 and a communication unit 940.

The memory 930 is used to store program codes and data of the base station, and the memory 930 may be a non-volatile memory such as a hard disk drive and a flash memory, and the memory 930 has software modules and device drivers therein. The software module can execute the method of the invention; the device drivers may be network and interface drivers. The communication unit 940 is used for supporting the base station to communicate with other network entities. For example, the ue supports communication between the base station and other communication network entities, such as a Mobility Management Entity (MME) located in an Evolved Packet Core (EPC), a Signaling GateWay (SGW), and/or a Packet data GateWay (PDN GW or PGW).

Optionally, the processing circuit 920 may further include: an electro-phase modulation unit 924. And the electric phase modulation unit 924 is configured to group the antennas, obtain N independent groups of antennas, and form a multi-antenna system, so as to flexibly adjust a downward tilt angle of each group of antennas.

Before the antenna 910 receives the N rf analog signals, the electric phase modulation unit 924 may adjust the downtilt of each antenna group according to the antenna application scenario, the coverage of the antenna, and other factors. By adjusting the downward inclination angle, the coverage range and the direction of the antenna are changed, so that the multi-antenna system is suitable for various application scenes.

A processing circuit 920, configured to determine N first digital signals according to the acquired N baseband digital signals, where the power of the first digital signal is a sum of partial powers of each of 4 baseband digital signals, the 4 baseband digital signals are included in the N baseband digital signals, and N is a positive integer multiple of 4;

the processing circuit 920 is further configured to obtain N first radio frequency analog signals according to the N first digital signals, where the power of the first radio frequency analog signal is the same as the power of the first digital signal.

The processing circuit 920 is further configured to obtain N second radio frequency analog signals according to the N first radio frequency analog signals, where the power of the N second radio frequency analog signals is a sum of powers, included in the N first radio frequency analog signals, corresponding to the same baseband data signal in the N first digital signals. The N second radio frequency analog signals correspond to the N baseband digital signals, and the power of any one of the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal.

An antenna 910, configured to transmit the N second radio frequency analog signals.

Optionally, the processing circuit 920 determines N first digital signals before determining N first digital signals according to the acquired N baseband digital signals,

the processing circuit 920 is further configured to determine an M-dimensional unitary matrix according to the obtained N baseband digital signals, where M is a positive integer multiple of 4, and determine N first digital signals according to the M-dimensional unitary matrix and the N baseband digital signals.

Optionally, the processing circuit 920 is specifically configured to multiply a row matrix formed by N baseband digital signals with a transpose of an N-dimensional unitary matrix, determine a first matrix, and extract N first digital signals according to the first matrix.

Optionally, the processing circuit 920 is further specifically configured to pass the N first radio frequency analog signals through a bridge network to obtain N second radio frequency analog signals.

Optionally, the bridge network comprises a first bridge sub-network and a second bridge sub-network.

The processing circuit 920 passes the N first radio frequency analog signals through the first bridge subnetwork to obtain N third radio frequency analog signals, where the power of each third radio frequency analog signal in the N third radio frequency analog signals is the sum of powers, included in the 2 first radio frequency analog signals, corresponding to the same baseband data signal in the 2 first digital signals; and obtaining N second radio frequency analog signals by the N third radio frequency analog signals through a second bridge sub-network, wherein the N second radio frequency analog signals correspond to the N baseband digital signals, and the power of any one second radio frequency analog signal in the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal.

Optionally, the first bridge sub-network and the second bridge sub-network each comprise two co-frequency combiners.

Corresponding to fig. 8, an embodiment of the present application further provides a base station.

Fig. 10 is a second schematic diagram of a base station according to an embodiment of the present invention. As shown in fig. 10, the base station includes: an antenna 1010 and a processing circuit 1020.

The antenna 1010 is used for supporting transmission and reception of information between the base station and the terminal, and for supporting radio communication between the terminal and other terminals. The processing circuit 1020 is configured to process signals transmitted and received by the antenna 1010 accordingly. The processing circuitry 920 may include a bridge network 1021, a radio remote unit RRU 1022, and a baseband processing unit BBU 1023.

The base station may also include a memory 1030 and a communication unit 1040.

The memory 1030 is used to store program codes and data of the base station, and the memory 1030 may be a non-volatile memory such as a hard disk drive and a flash memory, and the memory 1030 has software modules and device drivers therein. The software module can execute the method of the invention; the device drivers may be network and interface drivers. The communication unit 1040 is used to support the base station to communicate with other network entities. For example, the MME may be configured to support communication between a base station and other communication network entities, such as an SGW, a PDN GW, or a PGW.

Optionally, the processing circuit 1020 may further include: an electric phasing unit 1024. And the electric phase modulation unit 1024 is used for grouping the antennas to obtain N independent groups of antennas to form a multi-antenna system so as to flexibly adjust the downward inclination angle of each group of antennas.

Before the antenna 1010 receives the N radio frequency analog signals, the electric phase modulation unit 1024 may adjust the downtilt angle of each group of antennas according to the factors such as the difference of the application scenarios of the antennas and the coverage of the antennas. By adjusting the downward inclination angle, the coverage range and the direction of the antenna are changed, so that the multi-antenna system is suitable for various application scenes.

And an antenna 1010 for receiving N rf analog signals by the base station, where N is a positive integer multiple of 4.

The processing circuit 1020 is configured to obtain N first radio frequency analog signals according to the N radio frequency analog signals received by the receiver, where the power of the first radio frequency analog signal is a sum of partial powers of each of the 4 radio frequency analog signals, the 4 radio frequency analog signals are included in the N radio frequency analog signals, and obtain N first digital signals according to the N first radio frequency analog signals, where the power of the first digital signal is the same as the power of the first radio frequency analog signal.

The processing circuit 1020 is further configured to obtain N baseband digital signals from the N first digital signals, where the N baseband digital signals correspond to the N radio frequency analog signals, and a power of any one baseband digital signal in the N baseband digital signals is the same as a power of the corresponding radio frequency analog signal.

Optionally, the bridge network comprises a first bridge sub-network and a second bridge sub-network. The processing circuit 1020 is specifically configured to pass the N radio frequency analog signals through the first bridge sub-network to obtain N second radio frequency analog signals, where power of any one of the N second radio frequency analog signals is a half power sum of each of the 2 radio frequency analog signals, and pass the N second radio frequency analog signals through the second bridge sub-network to obtain N first radio frequency analog signals, where power of any one of the N first radio frequency analog signals is a partial power sum of each of the 4 radio frequency analog signals.

Optionally, the processing circuit 1020 is further specifically configured to perform matrixing processing on the first digital signal to obtain a first matrix, decompose the first matrix into a row matrix formed by a second digital signal, and multiply the row matrix by an M-dimensional unitary matrix transpose, so as to extract the second digital signal, where the second digital signal is a baseband digital signal, and M is a positive integer multiple of 4.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor, or a combination of the two. The software instructions may be comprised of corresponding software modules that may be stored in ram, flash memory, ROM, EPROM (erasable programmable read-only memory), EEPROM (electrically erasable programmable read-only memory), a hard disk, a compact disc read-only memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in user equipment. Of course, the processor and the storage medium may reside as discrete components in user equipment.

Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.

Claims

A method of adjusting antenna signal power, the method comprising:

a base station determines N first digital signals according to N acquired baseband digital signals, wherein the power of the first digital signals is the sum of partial powers of each baseband digital signal in 4 baseband digital signals, the 4 baseband digital signals are contained in the N baseband digital signals, and N is a positive integer multiple of 4;

the base station acquires N first radio frequency analog signals according to the N first digital signals, wherein the power of the first radio frequency analog signals is the same as that of the first digital signals;

the base station acquires N second radio frequency analog signals according to the N first radio frequency analog signals, wherein the power of the N second radio frequency analog signals is the sum of the powers, contained in the N first radio frequency analog signals, corresponding to the same baseband data signals in the N first digital signals; the N second radio frequency analog signals correspond to the N baseband digital signals, and the power of any one of the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal;

and the base station sends the N second radio frequency analog signals through an antenna.
The method of claim 1, wherein before the base station determines N first digital signals from the N acquired baseband digital signals, the method further comprises:

the base station determines an M-dimensional unitary matrix according to the obtained N baseband digital signals, wherein M is a positive integer multiple of 4;

and the base station determines N first digital signals according to the M-dimensional unitary matrix and the N baseband digital signals.
The method of claim 2, wherein the base station determines N first digital signals from the N baseband digital signals, specifically comprising:

the base station multiplies a row matrix formed by the N baseband digital signals by the transpose of the N-dimensional unitary matrix to determine a first matrix;

and the base station extracts N first digital signals according to the first matrix.
The method according to claim 1, wherein the base station obtains N second radio frequency analog signals according to the N first radio frequency analog signals, specifically comprising:

and the base station acquires N second radio frequency analog signals by passing the N first radio frequency analog signals through a bridge network.
The method of claim 4, wherein the bridge network comprises a first bridge sub-network and a second bridge sub-network;

the base station obtains N second radio frequency analog signals by passing the N first radio frequency analog signals through a bridge network, where the power of the N second radio frequency analog signals is a sum of powers, included in the N first radio frequency analog signals, corresponding to a same baseband data signal in the N first digital signals, and the method specifically includes:

the base station enables the N first radio frequency analog signals to pass through the first bridge sub-network to obtain N third radio frequency analog signals, wherein the power of each third radio frequency analog signal in the N third radio frequency analog signals is the sum of the powers, contained in the 2 first radio frequency analog signals, corresponding to the same baseband data signals in the 2 first digital signals;

and the base station enables the N third radio frequency analog signals to obtain N second radio frequency analog signals to pass through the second bridge sub-network, wherein the N second radio frequency analog signals correspond to the N baseband digital signals, and the power of any one second radio frequency analog signal in the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal.
The method of claim 5, wherein the first bridge sub-network and the second bridge sub-network each comprise two co-frequency combiners.
A method of adjusting antenna signal power, the method comprising:

a base station receives N radio frequency analog signals, wherein N is a positive integer multiple of 4;

the base station acquires N first radio frequency analog signals according to the N radio frequency analog signals, wherein the power of the first radio frequency analog signals is the sum of partial powers of each of the 4 radio frequency analog signals, and the 4 radio frequency analog signals are contained in the N radio frequency analog signals;

the base station acquires N first digital signals according to the N first radio frequency analog signals, wherein the power of the first digital signals is the same as that of the first radio frequency analog signals;

the base station acquires N baseband digital signals from the N first digital signals, wherein the N baseband digital signals correspond to the N radio frequency analog signals, and the power of any one baseband digital signal in the N baseband digital signals is the same as the power of the corresponding radio frequency analog signal.
The method according to claim 7, wherein the base station obtains N first radio frequency analog signals according to the N radio frequency analog signals, and specifically includes:

the base station enables the N radio frequency analog signals to pass through a bridge network to obtain N first radio frequency analog signals, wherein the bridge network comprises a first bridge sub-network and a second bridge sub-network;

the base station enables the N radio frequency analog signals to pass through the first bridge sub-network to obtain N second radio frequency analog signals, wherein the power of any one of the N second radio frequency analog signals is the sum of half the power of each of the 2 radio frequency analog signals;

and the base station enables the N second radio frequency analog signals to pass through the second bridge sub-network to obtain N first radio frequency analog signals, wherein the power of any one of the N first radio frequency analog signals is the sum of partial powers of each of the 4 radio frequency analog signals.
The method of claim 8, wherein the first bridge sub-network and the second bridge sub-network each comprise two co-frequency combiners.
The method of claim 7, wherein the base station obtains a baseband digital signal from the first digital signal, and specifically comprises:

the base station carries out matrixing processing on the first digital signal to obtain a first matrix;

and the base station decomposes the first matrix into a row matrix formed by second digital signals, and multiplies the row matrix by an M-dimensional unitary matrix transpose to extract the second digital signals, wherein the second digital signals are baseband digital signals, and M is a positive integer multiple of 4.
A base station, characterized in that the base station comprises:

the processing unit is used for determining N first digital signals according to the acquired N baseband digital signals, wherein the power of the first digital signals is the sum of partial powers of each baseband digital signal in 4 baseband digital signals, the 4 baseband digital signals are contained in the N baseband digital signals, and N is a positive integer multiple of 4;

the processing unit is further configured to obtain N first radio frequency analog signals according to the N first digital signals, where power of the first radio frequency analog signals is the same as power of the first digital signals;

the processing unit is further configured to obtain N second radio frequency analog signals according to the N first radio frequency analog signals, where power of the N second radio frequency analog signals is a sum of powers, included in the N first radio frequency analog signals, corresponding to the same baseband data signals in the N first digital signals; the N second radio frequency analog signals correspond to the N baseband digital signals, and the power of any one of the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal;

and the transmitting unit is used for transmitting the N second radio frequency analog signals through an antenna.
The base station of claim 11, wherein the processing unit determines N first digital signals before determining N first digital signals according to the obtained N baseband digital signals,

the processing unit is further configured to determine an M-dimensional unitary matrix according to the acquired N baseband digital signals, where M is a positive integer multiple of 4;

and determining N first digital signals according to the M-dimensional unitary matrix and the N baseband digital signals.
The base station according to claim 11, wherein the processing unit is configured to multiply a row matrix formed by the N baseband digital signals with a transpose of the N-dimensional unitary matrix to determine a first matrix;

and extracting N first digital signals according to the first matrix.
The base station of claim 11, wherein the processing unit is specifically configured to obtain N second rf analog signals by passing the N first rf analog signals through a bridge network.
The base station of claim 14, wherein the bridge network comprises a first bridge sub-network and a second bridge sub-network;

the processing unit is further specifically configured to pass the N first radio frequency analog signals through the first bridge subnetwork to obtain N third radio frequency analog signals, where power of each third radio frequency analog signal in the N third radio frequency analog signals is a sum of powers, included in the 2 first radio frequency analog signals, corresponding to a same baseband data signal in the 2 first digital signals;

and obtaining N second radio frequency analog signals by passing the N third radio frequency analog signals through the second bridge sub-network, wherein the N second radio frequency analog signals correspond to the N baseband digital signals, and the power of any one second radio frequency analog signal in the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal.
The base station of claim 15, wherein the first bridge sub-network and the second bridge sub-network each comprise two on-frequency combiners.
A base station, characterized in that the base station comprises:

the receiving unit is used for receiving N radio frequency analog signals by the base station, wherein N is a positive integer multiple of 4;

the processing unit is configured to obtain N first radio frequency analog signals according to the N radio frequency analog signals received by the receiving unit, where the power of the first radio frequency analog signal is a sum of partial powers of each of 4 radio frequency analog signals, and the 4 radio frequency analog signals are included in the N radio frequency analog signals;

acquiring N first digital signals according to the N first radio frequency analog signals, wherein the power of the first digital signals is the same as that of the first radio frequency analog signals;

the processing unit is further configured to obtain N baseband digital signals from the N first digital signals, where the N baseband digital signals correspond to the N radio frequency analog signals, and a power of any one of the N baseband digital signals is the same as a power of the corresponding radio frequency analog signal.
The base station of claim 17, wherein the bridge network comprises a first bridge sub-network and a second bridge sub-network;

the processing unit specifically includes: the N radio frequency analog signals pass through the first bridge sub-network to obtain N second radio frequency analog signals, wherein the power of any one of the N second radio frequency analog signals is the sum of half the power of each of the 2 radio frequency analog signals;

and passing the N second radio frequency analog signals through the second bridge subnetwork to obtain N first radio frequency analog signals, wherein the power of any one of the N first radio frequency analog signals is the sum of partial powers of each of the 4 radio frequency analog signals.
The base station of claim 18, wherein the first bridge sub-network and the second bridge sub-network each comprise two on-frequency combiners.
The base station of claim 17, wherein the processing unit is further specifically configured to:

performing matrixing processing on the first digital signal to obtain a first matrix;

and decomposing the first matrix into a row matrix formed by a second digital signal, multiplying the row matrix by an M-dimensional unitary matrix transpose, and extracting the second digital signal, wherein the second digital signal is a baseband digital signal, and M is a positive integer multiple of 4.
A base station, characterized in that the base station comprises:

the processing circuit is used for determining N first digital signals according to the acquired N baseband digital signals, the power of the first digital signals is the sum of partial powers of each baseband digital signal in 4 baseband digital signals, the 4 baseband digital signals are contained in the N baseband digital signals, and N is a positive integer multiple of 4;

the processing circuit is further configured to obtain N first radio frequency analog signals according to the N first digital signals, where power of the first radio frequency analog signals is the same as power of the first digital signals;

the processing circuit is further configured to obtain N second radio frequency analog signals according to the N first radio frequency analog signals, where power of the N second radio frequency analog signals is a sum of powers, included in the N first radio frequency analog signals, corresponding to the same baseband data signals in the N first digital signals; the N second radio frequency analog signals correspond to the N baseband digital signals, and the power of any one of the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal;

a transmitter for transmitting the N second radio frequency analog signals through an antenna.
The base station of claim 21, wherein the processing circuit determines N first digital signals prior to obtaining the N baseband digital signals,

the processing circuit is further configured to determine an M-dimensional unitary matrix according to the acquired N baseband digital signals, where M is a positive integer multiple of 4;

and determining N first digital signals according to the M-dimensional unitary matrix and the N baseband digital signals.
The base station according to claim 21, wherein the processing circuit is configured to multiply a row matrix formed by the N baseband digital signals with a transpose of the N-dimensional unitary matrix to determine a first matrix;

and extracting N first digital signals according to the first matrix.
The base station of claim 21, wherein the processing circuit is specifically configured to pass the N first rf analog signals through a bridge network to obtain N second rf analog signals.
The base station of claim 24, wherein the bridge network comprises a first bridge sub-network and a second bridge sub-network;

the processing circuit is further specifically configured to pass the N first radio frequency analog signals through the first bridge subnetwork to obtain N third radio frequency analog signals, where power of each third radio frequency analog signal in the N third radio frequency analog signals is a sum of powers, included in the 2 first radio frequency analog signals, corresponding to a same baseband data signal in the 2 first digital signals;

and obtaining N second radio frequency analog signals by passing the N third radio frequency analog signals through the second bridge sub-network, wherein the N second radio frequency analog signals correspond to the N baseband digital signals, and the power of any one second radio frequency analog signal in the N second radio frequency analog signals is the same as the power of the corresponding baseband digital signal.
The base station of claim 25, wherein the first bridge sub-network and the second bridge sub-network each comprise two on-frequency combiners.
A base station, characterized in that the base station comprises:

the receiver is used for receiving N radio frequency analog signals by the base station, wherein N is a positive integer multiple of 4;

a processing circuit, configured to obtain N first radio frequency analog signals according to the N radio frequency analog signals received by the receiver, where the power of the first radio frequency analog signal is a sum of partial powers of each of 4 radio frequency analog signals, and the 4 radio frequency analog signals are included in the N radio frequency analog signals;

acquiring N first digital signals according to the N first radio frequency analog signals, wherein the power of the first digital signals is the same as that of the first radio frequency analog signals;

the processing circuit is further configured to obtain N baseband digital signals from the N first digital signals, where the N baseband digital signals correspond to the N radio frequency analog signals, and a power of any one of the N baseband digital signals is the same as a power of the corresponding radio frequency analog signal.
The base station of claim 27, wherein the bridge network comprises a first bridge sub-network and a second bridge sub-network;

the processing circuit is specifically configured to pass the N radio frequency analog signals through the first bridge subnetwork to obtain N second radio frequency analog signals, where power of any one of the N second radio frequency analog signals is a sum of half power of each of the 2 radio frequency analog signals;

and passing the N second radio frequency analog signals through the second bridge subnetwork to obtain N first radio frequency analog signals, wherein the power of any one of the N first radio frequency analog signals is the sum of partial powers of each of the 4 radio frequency analog signals.
The base station of claim 28, wherein the first bridge sub-network and the second bridge sub-network each comprise two on-frequency combiners.
The base station of claim 27, wherein the processing circuit is further specifically configured to:

performing matrixing processing on the first digital signal to obtain a first matrix;

and decomposing the first matrix into a row matrix formed by a second digital signal, multiplying the row matrix by an M-dimensional unitary matrix transpose, and extracting the second digital signal, wherein the second digital signal is a baseband digital signal, and M is a positive integer multiple of 4.