CN106301508B - Method and device for reducing the order of an antenna channel - Google Patents

Abstract

An embodiment of the present invention discloses a method for reducing the order of an antenna channel. The method includes: when performing antenna calibration, detecting an antenna channel; when detecting a first antenna channel with a fault, The calibration compensation factor of the antenna channel is set to 0; when the second antenna channel without fault is detected, the calibration compensation factor of the second antenna channel corresponding to the second antenna channel is set to remain unchanged; the antenna is adjusted according to the calibration compensation factor matrix of the antenna channel. The shaping weight value is 0, so that the shaping weight value on the antenna corresponding to the calibration compensation factor of the first antenna channel is 0, and the antenna order reduction is realized. The embodiment of the present invention also discloses a device for reducing the order of an antenna channel.

Description

Method and device for reducing the order of an antenna channel

technical field

The present invention relates to an antenna channel management technology in wireless communication, and in particular, to a method and device for reducing the order of an antenna channel.

Background technique

As a space division technology, smart antenna technology has become the most attractive technology after frequency division multiplexing, time division multiplexing and code division multiplexing. In the Time Division Long Term Evolution (TD-LTE, Time Division Long Term Evolution) system, in order to reduce the co-channel interference between terminals and at the same time increase the throughput and coverage of users at the edge of the cell, a multi-cell with small array element spacing is introduced at the base station side. Antenna beamforming technology. In order to ensure the correctness and reliability of beamforming, antenna calibration of smart antennas has become a key application technology. Specifically, the base station can reduce the amplitude and phase errors of each channel of the antenna array through the calibration of the smart antenna, so as to ensure the correctness and reliability of the beamforming.

In the prior art, a baseband processing unit (BBU, Building Base band Unit) of a base station completes the processing of baseband signals, and a remote radio module (RRU, Radio Remote Unit) of the base station implements radio frequency processing and signal amplification. Connect via fiber optic. When an individual antenna channel fails, the preset number of antenna channels is reduced by leaps and bounds to block the faulty antenna channel, so that the faulty antenna channel is out of operation (that is, excluded from the antenna array), and the antenna array is reduced. order, so that the faulty antenna channel is closed, thereby reducing the beamforming and ensuring the normal operation of the service. For example: in the existing 8-antenna array of macro base station, when the base station detects that a certain antenna channel is faulty, it directly drops to the 4-antenna array to close the faulty antenna channel; when some antennas in the 4-antenna array are faulty , then drop to a 2-antenna array to close the faulty antenna channel.

However, using the processing method of decreasing the number of antenna channels by leaps and bounds in the prior art, when reducing the order of the antenna channels, the number of antenna channels is decreased by leaps and bounds, which will lead to the degradation of the system performance; at the same time, in a large-scale antenna array, even the In an antenna array with thousands of antennas, when an individual antenna channel fails, using the existing antenna order reduction technology, the base station needs to support antenna arrays with multiple matrix dimensions in leaps and bounds, and the price reduction cost is high; or, the base station needs to support the maximum number of antennas For antenna arrays with all the following matrix dimensions, for example, 64-antenna arrays, the base station needs to support antenna arrays with 1, 2, 3, .

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the embodiments of the present invention are expected to provide a method and apparatus for reducing the order of an antenna channel, which can more easily reduce the order of the antenna channel and eliminate the faulty antenna without affecting the performance of the base station system and without changing the dimension of the antenna matrix. The influence of the channel on beamforming ensures the normal operation of the service.

The technical scheme of the present invention is realized as follows:

An embodiment of the present invention provides a method for reducing the order of an antenna channel, and the method includes:

When performing antenna calibration, the antenna channel is detected;

When a faulty first antenna channel is detected, the calibration compensation factor of the first antenna channel corresponding to the first antenna channel is set to 0;

When detecting the second antenna channel without fault, setting the calibration compensation factor of the second antenna channel corresponding to the second antenna channel to be unchanged;

According to the calibration compensation factor matrix of the antenna channel, the shaping weight of the antenna is adjusted, so that the shaping weight on the antenna corresponding to the calibration compensation factor of the first antenna channel is 0, so as to realize the reduction of the order of the antenna; wherein, the antenna channel The calibration compensation factor matrix includes the first antenna channel calibration compensation factor and the second antenna channel calibration compensation factor.

In the above solution, the antenna calibration includes uplink antenna channel calibration and downlink antenna channel calibration;

When performing antenna calibration, the antenna channel is detected, including:

When performing the uplink antenna calibration, the uplink antenna channel is detected, and when the downlink antenna calibration is performed, the downlink antenna channel is detected;

Correspondingly, before the detection of the uplink antenna channel, the method further includes:

Obtain the calibration compensation factor A _k of the uplink antenna channel; wherein, k=1, 2, 3...K, and K is the maximum number of uplink antennas in the antenna array;

Before the detection of the downlink antenna channel, the method further includes:

Obtain the downlink antenna channel calibration compensation factor B _k ; where k=1, 2, 3...K, and K is the maximum number of downlink antennas in the antenna array.

In the above solution, the first antenna channel is the uplink antenna channel i, and the first antenna channel calibration compensation factor is the uplink antenna channel calibration compensation factor A _{i corresponding to the uplink antenna channel i} , where i∈{1 , 2, 3...K};

Correspondingly, when the faulty first antenna channel is detected, setting the calibration compensation factor of the first antenna channel corresponding to the first antenna channel to 0, including:

When it is detected that the uplink antenna channel i is faulty, the uplink antenna channel calibration compensation factor A _i =0 is set.

In the above solution, the first antenna channel is downlink antenna channel j, or the first antenna channel is downlink antenna channel j and uplink antenna channel j;

The first antenna channel calibration compensation factor is an uplink antenna channel calibration compensation factor A _{j corresponding to the uplink antenna channel j} and a downlink antenna channel calibration compensation factor B _{j corresponding to the downlink antenna channel j} , where j∈{1 , 2, 3...K};

Correspondingly, when the faulty first antenna channel is detected, setting the calibration compensation factor of the first antenna channel corresponding to the first antenna channel to 0, including:

When it is detected that the downlink antenna channel j is faulty, the uplink antenna channel calibration compensation factor A _j =0 and the downlink antenna channel calibration compensation factor B _j =0 are set.

In the above solution, the first antenna channel is a downlink antenna channel j, and the first antenna channel calibration compensation factor is a downlink antenna channel calibration compensation factor B _{j corresponding to the downlink antenna channel j} , where j∈{1 , 2, 3...K};

Correspondingly, when the faulty first antenna channel is detected, setting the calibration compensation factor of the first antenna channel corresponding to the first antenna channel to 0, including:

When it is detected that the downlink antenna channel j is faulty, the downlink antenna channel calibration compensation factor B _j =0 is set.

An embodiment of the present invention provides a device for reducing the order of an antenna channel, and the device includes:

The detection unit is used to detect the antenna channel during antenna calibration;

a setting unit, configured to set the calibration compensation factor of the first antenna channel corresponding to the first antenna channel to 0 when the detection unit detects the first antenna channel having a fault;

The setting unit is further configured to set the calibration compensation factor of the second antenna channel corresponding to the second antenna channel to be unchanged when the detection unit detects the second antenna channel without fault;

an adjustment unit, configured to adjust the antenna shaping weight according to the antenna channel calibration compensation factor matrix set by the setting unit, so that the antenna corresponding to the first antenna channel calibration compensation factor set by the setting unit The shaping weight is 0 to realize antenna reduction; wherein, the antenna channel calibration compensation factor matrix includes the first antenna channel calibration compensation factor and the second antenna channel calibration compensation factor set by the setting unit.

In the above solution, the antenna calibration includes uplink antenna channel calibration and downlink antenna channel calibration;

The detection unit is specifically configured to detect the uplink antenna channel when performing the uplink antenna calibration, and detect the downlink antenna channel when performing the downlink antenna calibration;

Correspondingly, the device further includes: an acquisition unit;

The acquisition unit is configured to acquire the calibration compensation factor A _k of the uplink antenna channel before the detection unit detects the uplink antenna channel; wherein, k=1, 2, 3...K, and K is the maximum uplink in the antenna array The number of antennas; and, before the detection unit detects the downlink antenna channel, obtains the downlink antenna channel calibration compensation factor B _k ; where k=1, 2, 3...K, K is the maximum number of downlink antennas in the antenna array .

In the above solution, the first antenna channel detected by the detection unit is uplink antenna channel i, and the first antenna channel calibration compensation factor acquired by the acquisition unit is the uplink antenna channel corresponding to the uplink antenna channel i calibration compensation factor A _i , where i ∈ {1, 2, 3...K};

The setting unit is specifically configured to set the uplink antenna channel calibration compensation factor A _i =0 acquired by the acquisition unit when the detection unit detects that the uplink antenna channel i is faulty.

In the above solution, the first antenna channel detected by the detection unit is a downlink antenna channel j, or the first antenna channel detected by the detection unit is a downlink antenna channel j and an uplink antenna channel j;

The first antenna channel calibration compensation factor acquired by the acquiring unit is an uplink antenna channel calibration compensation factor A j corresponding to the uplink antenna channel _j and a downlink antenna channel calibration compensation factor B j corresponding to the downlink antenna channel _j , Among them, j∈{1, 2, 3...K};

The setting unit is specifically configured to, when the detection unit detects that the downlink antenna channel j is faulty, set the uplink antenna channel calibration compensation factor A _j obtained by the acquisition unit to be 0, and set the acquisition unit The acquired downlink antenna channel calibration compensation factor B _j =0.

In the above solution, the first antenna channel detected by the detection unit is downlink antenna channel j, and the first antenna channel calibration compensation factor acquired by the acquisition unit is the downlink antenna channel corresponding to the downlink antenna channel j calibration compensation factor B _j , where j ∈ {1, 2, 3...K};

The setting unit is specifically configured to set the downlink antenna channel calibration compensation factor B _j =0 acquired by the acquisition unit when the detection unit detects that the downlink antenna channel j is faulty.

Embodiments of the present invention provide a method and device for reducing the order of an antenna channel. When performing antenna calibration, the antenna channel is detected; when a faulty first antenna channel is detected, the first antenna corresponding to the first antenna channel is detected. The channel calibration compensation factor is set to 0; when the second antenna channel without fault is detected, the second antenna channel calibration compensation factor corresponding to the second antenna channel is set to be unchanged; according to the antenna channel calibration compensation factor matrix, adjust the antenna The weights are shaped so that the shaped weights on the antenna corresponding to the first antenna channel calibration compensation factor are 0, so that the antenna is reduced in order. With the above technical implementation scheme, since the antenna channel reducing device performs antenna compensation on the antennas in the antenna array according to the antenna channel calibration compensation factor matrix, those skilled in the art can understand that the antenna channel calibration factor corresponding to the faulty antenna channel is 0, therefore, the subcarriers on the probe signal received by the faulty antenna channel are all 0 (the frequency domain data are all 0), so that the channel estimation of the normalized faulty antenna corresponds to 0, and then the calculated value is the same as this The shape weight corresponding to the faulty antenna channel is 0. When the data of all space division users are mapped to the antenna array by multiplying with the shaping weight matrix, the shaped data is 0 on the faulty antenna, so that the base station antenna can be used without affecting the performance of the base station system and without changing On the basis of the dimension of the antenna matrix, it is easier to reduce the order of the antenna channel to eliminate the influence of the faulty antenna channel on the beamforming, and to ensure the normal operation of the business.

Description of drawings

Fig. 1 is a structural block diagram realized by an embodiment of the present invention;

FIG. 2 is a flowchart 1 of a method for reducing the order of an antenna channel according to an embodiment of the present invention;

3 is a second flowchart of a method for reducing the order of an antenna channel according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram 1 of a device for reducing the order of an antenna channel according to an embodiment of the present invention;

FIG. 5 is a second schematic structural diagram of a device for reducing the order of an antenna channel according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The new generation broadband wireless mobile communication system is based on Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) and multi-antenna technology, and in the mobile communication air interface technology, data transmission is carried out with optimized packets in an all-round way. OFDM has frequency selectivity, which solves the problem of multi-path channels and greatly improves the frequency band utilization; in the multi-antenna technology, the Multiple Input Multiple Output (MIMO, Multiple Input Multiple Output) technology uses the spatial degree of freedom provided by multiple antennas to separate user. Different users can occupy the same time-frequency resources, so that the signal can suppress the interference between multiple users through the signal processing algorithm, and improve the cell throughput by means of time-frequency resource multiplexing. In smart antennas, beamforming is the most important and common key technology. It makes full use of diversity gain, array gain and interference suppression gain to improve system performance and spectral efficiency.

Specifically, the beamforming technology is a signal processing technology based on an antenna array, which generates a directional beam by adjusting the weighting coefficient of each element in the antenna array, so that a significant array gain can be obtained. The beamforming technology is applied to the intelligent multi-antenna transmission technology of the antenna array with small spacing. The ground points to the user's incoming wave direction, thereby improving the signal-to-noise ratio, increasing the system capacity or coverage. In view of the asymmetry of the uplink and downlink of the wireless radio frequency channel before shaping, the signal is generally processed in the baseband unit, but the radio frequency channel is also a part of the wireless channel, which will lead to the process of the signal from the baseband unit to the radio frequency unit, and then to the wireless port. It is affected by many aspects, such as power amplifier, filtering, optical cable, temperature, etc., which will make the uplink and downlink wireless channels of the system unable to maintain a good consistency. In order to ensure the high quality of beamforming, each antenna channel should be calibrated. Traditionally, the RRU is used to perform time domain calibration, while in the embodiment of the present invention, the BBU is used to perform frequency domain calibration, thereby compensating the phase of each channel. difference and amplitude difference to improve the accuracy of calibration, that is, as shown in FIG. 1 , the device 1 for reducing the order of the antenna channel in the embodiment of the present invention is set in the BBU, or is a module connected to the BBU, and the embodiment of the present invention does not limit.

It should be noted that the BBU2 is connected to the RRU3 through an optical fiber, and the RRU is connected to the antenna array 5 through the antenna coupling plate 4 .

Example 1

An embodiment of the present invention provides a method for reducing the order of an antenna channel. As shown in FIG. 2 , the method may include:

S101, when performing antenna calibration, detect the antenna channel.

In this step, the antenna calibration is performed by the reducing device of the antenna channel.

It should be noted that antenna calibration is generally divided into three stages: (1), antenna channel amplitude and phase estimation (channel amplitude and phase estimation by sending and receiving training sequences); (2), antenna channel status judgment ( Judging whether the state of the antenna channel satisfies the conditions for amplitude and phase adjustment); (3), channel amplitude and phase adjustment (adjust the amplitude and phase of each antenna channel to be consistent according to certain rules).

Antenna calibration is designed to adjust the amplitude of each antenna channel to be consistent, but in actual work, it can assist the BBU to complete the fault detection and judgment of the antenna channel. In the embodiment of the present invention, the antenna channel calibration compensation factor (calibration coefficient) to realize that the forming weight in the faulty antenna channel is 0, thereby eliminating the influence of the faulty antenna on the beamforming of the antenna array.

In particular, the embodiments of the present invention are applicable to any occasion where antenna calibration can be performed and the smart antenna utilizes beamforming technology.

It should be noted that there are uplink antennas and downlink antennas in the antenna array, and the number of uplink antennas is the same as the number of downlink antennas. Therefore, the uplink antenna channels correspond to the downlink antenna channels. The device for reducing the order of the antenna channel can detect the uplink antenna channel first, and then detect the downlink antenna channel.

Specifically, in the embodiment of the present invention, when the device for reducing the order of the antenna channel performs antenna calibration, the amplitude, phase, power, and hardware of the antenna channel can be detected. The specific detection method is the prior art, which is not described in this embodiment of the present invention.

Further, the embodiment of the present invention realizes that the weighted weight value in the faulty antenna channel is 0 by means of the antenna channel calibration compensation factor (calibration coefficient) in the antenna calibration process, wherein the weighted object of the weighted weight value is uplink service data ( Uplink received data) and downlink service data (downlink broadcast data), so that the data of the faulty antenna channel is 0, and the service operation of the faulty antenna channel is stopped to ensure the normal operation of the service of the non-faulty antenna channel.

Specifically, on the one hand, the uplink receiving service data is 0 on the faulty uplink antenna channel. By not changing the uplink receiving operation matrix, the received signals of other uplink antenna channels that are not faulty are used to perform correct uplink demodulation, so that the faulty uplink antenna channel is used for correct uplink demodulation. The effect of the upstream antenna channel is minimized. On the other hand, the downlink antenna channel calibration compensation factor corresponding to the faulty downlink antenna channel is 0, so that the broadcast data of the downlink broadcast antenna channel on the faulty downlink antenna is 0, thereby minimizing the influence of the faulty downlink antenna channel.

S102. When a faulty first antenna channel is detected, the calibration compensation factor of the first antenna channel corresponding to the first antenna channel is set to 0.

Specifically, after the antenna channel's order reduction device detects the antenna channel, the antenna channel calibration compensation factor corresponding to each antenna channel is obtained during the antenna calibration process. At this time, the antenna channel's order reduction device detects the faulty No. When there is one antenna channel, the calibration compensation factor of the first antenna channel corresponding to the first antenna channel may be set to 0.

It should be noted that the antenna channel calibration compensation factor of each antenna in the antenna array forms an antenna channel calibration compensation factor matrix. In the process of antenna calibration, each antenna is multiplied by its corresponding antenna channel calibration compensation factor to compensate for the difference in amplitude and phase between antennas, that is, amplitude and phase adjustment.

It can be understood that when an antenna in the antenna array is faulty, in order to prevent the faulty antenna from affecting the beamforming of other antennas, the embodiment of the present invention can make the faulty antenna of the faulty antenna in the beamforming process. The forming weight on the above is 0, so as to achieve the purpose of the final forming data being 0.

Exemplarily, it is assumed that the antenna array has K uplink antenna channels, and K≥1, the order reduction device of the antenna channel detects that the power value of the uplink antenna channel i is abnormal, and then, the antenna channel corresponding to the uplink antenna channel i is calibrated for the compensation factor. Set to 0; in the embodiment of the present invention, i starts from 1 to be numbered, where i∈{1, 2, 3...K}, the specific numbering starts, which is not limited in the embodiment of the present invention.

S103. When detecting a second antenna channel that does not have a fault, set the calibration compensation factor of the second antenna channel corresponding to the second antenna channel to be unchanged.

Specifically, after the antenna channel reduction device detects the antenna channel, it is not necessary to change the antenna channel calibration compensation factor obtained during antenna calibration for the antenna channel calibration compensation factor of the detected antenna channel that is not faulty. Therefore, when the device for reducing the order of the antenna channel detects the second antenna channel without fault, the device for reducing the order of the antenna channel may not change the calibration compensation factor of the second antenna channel corresponding to the second antenna channel.

It should be noted that S102 and S103 are optional steps after S101, and one of the steps is selected to be executed according to the actual detection situation; that is, in this embodiment of the present invention, after S101, S102 or S103 may be executed. The execution sequence of , may be determined according to the actual situation, which is not limited in this embodiment of the present invention.

S104. Adjust the shaping weight of the antenna according to the antenna channel calibration compensation factor matrix, so that the shaping weight value on the antenna corresponding to the first antenna channel calibration compensation factor is 0, so as to realize antenna reduction; wherein, the antenna channel calibration The compensation factor matrix includes the first antenna channel calibration compensation factor and the second antenna channel calibration compensation factor.

Specifically, the device for reducing the order of the antenna channel performs antenna compensation on the antennas in the antenna array according to the antenna channel calibration compensation factor matrix. Those skilled in the art can understand that since the first antenna channel calibration factor is 0, the first antenna channel calibration factor is 0. The subcarriers on the received probe signal of the antenna channel are all 0 (the frequency domain data are all 0), so that the channel estimation of the first antenna after normalization corresponds to 0, and the calculated channel corresponds to the first antenna channel. The assigned weight is 0. When the data of all space division users are mapped to the antenna array by multiplying with the shaping weight matrix, the shaping data is 0 on the first antenna, so that it does not affect the service data on other antennas in the antenna array. normal operation.

Exemplarily, assuming that the antenna array has K uplink antenna channels, K≥1, the order reduction device of the antenna channel detects that the power value of the uplink antenna channel i is abnormal, and the antenna channel calibration compensation factor corresponding to the uplink antenna channel i is 0, Therefore, those skilled in the art can understand that the subcarriers on the sounding signal received by the uplink antenna channel i are all 0, so that the i+1th column in the channel estimation matrix of the normalized uplink antenna i is all 0, and then the i+1th row in the calculated shaping weight matrix with the uplink antenna channel i is all 0. When the data of all space-division users is mapped to K antennas by multiplying with the shaping weight matrix, the shaped data is 0 on the antenna i, that is, K-1 antennas are actually performing service data normally, It does not affect the normal operation of service data on other K-1 antennas in the antenna array; where, i∈{1, 2, 3...K}.

It should be noted that there are three situations in which the uplink antenna channel is faulty and the downlink antenna channel is faulty, and the specific process will be described in subsequent embodiments.

In the method for reducing the order of the antenna channel provided by the embodiment of the present invention, the antenna channel is detected by performing antenna calibration; when a faulty first antenna channel is detected, the first antenna channel corresponding to the first antenna channel is calibrated and compensated The factor is set to 0; when a fault-free second antenna channel is detected, the calibration compensation factor of the second antenna channel corresponding to the second antenna channel is set to remain unchanged; according to the calibration compensation factor matrix of the antenna channel, the shaping weight of the antenna is adjusted value, so that the shaping weight value on the antenna corresponding to the first antenna channel calibration compensation factor is 0, and the antenna order reduction is realized. With the above technical implementation scheme, since the antenna channel reducing device performs antenna compensation on the antennas in the antenna array according to the antenna channel calibration compensation factor matrix, those skilled in the art can understand that the antenna channel calibration factor corresponding to the faulty antenna channel is 0, therefore, the subcarriers on the probe signal received by the faulty antenna channel are all 0 (the frequency domain data are all 0), so that the channel estimation of the normalized faulty antenna corresponds to 0, and then the calculated value is the same as this The shape weight corresponding to the faulty antenna channel is 0. When the data of all space division users are mapped to the antenna array by multiplying with the shaping weight matrix, the shaped data is 0 on the faulty antenna, so that the base station antenna can be used without affecting the performance of the base station system and without changing On the basis of the dimension of the antenna matrix, it is easier to reduce the order of the antenna channel to eliminate the influence of the faulty antenna channel on the beamforming, and to ensure the normal operation of the business.

Embodiment 2

An embodiment of the present invention provides a method for reducing the order of an antenna channel. As shown in FIG. 3 , the embodiment of the present invention uses a device for reducing the order of an antenna channel as an execution subject for description. The method may include:

S201. When performing uplink antenna calibration, the device for reducing the order of the antenna channel obtains the uplink antenna channel calibration compensation factor Ak; where k=1, 2, 3...K, where K is the maximum number of uplink antennas in the antenna array.

It should be noted that antenna calibration is generally divided into three stages: (1), antenna channel amplitude and phase estimation (channel amplitude and phase estimation by sending and receiving training sequences); (2), antenna channel status judgment ( Judging whether the state of the antenna channel satisfies the conditions for amplitude and phase adjustment); (3), channel amplitude and phase adjustment (adjust the amplitude and phase of each antenna channel to be consistent according to certain rules).

Antenna calibration is designed to adjust the amplitude of each antenna channel to be consistent, but in actual work, it can assist the BBU to complete the fault detection and judgment of the antenna channel. In the embodiment of the present invention, the antenna channel calibration compensation factor (calibration coefficient) to realize that the forming weight in the faulty antenna channel is 0, thereby eliminating the influence of the faulty antenna on the beamforming of the antenna array.

It should be noted that the uplink antenna channel is a receiving channel, which can receive signals.

In particular, the embodiments of the present invention are applicable to any occasion where antenna calibration can be performed and the smart antenna utilizes beamforming technology.

It should be noted that there are uplink antennas and downlink antennas in the antenna array, and the number of uplink antennas is the same as the number of downlink antennas. Therefore, the uplink antenna channels correspond to the downlink antenna channels. The device for reducing the order of the antenna channel can detect the uplink antenna channel first, and then detect the downlink antenna channel.

Specifically, when the device for reducing the order of the antenna channel performs the uplink antenna calibration, the calibration compensation factor Ak of the uplink antenna channel corresponding to the uplink antenna is obtained respectively through the existing calculation method; wherein, k=1, 2, 3... K, K is the maximum number of uplink antennas in the antenna array.

It should be noted that Ak is the parameter representation of the uplink antenna channel calibration compensation factor used in the embodiment of the present invention, and may also be other representation symbols, and the specific representation of the uplink antenna channel calibration compensation factor is not limited in this embodiment of the present invention.

S202, the device for reducing the order of the antenna channel detects the uplink antenna channel.

When the order reduction device of the antenna channel performs uplink antenna calibration, after obtaining the uplink antenna channel calibration compensation factor Ak, k=1, 2, 3...K, K is the maximum number of uplink antennas in the antenna array. The antenna channel calibration compensation factor can be known , there are K uplink antennas in the antenna array in the embodiment of the present invention. Therefore, the device for reducing the order of the antenna channel detects the K uplink antenna channels corresponding to the K uplink antennas.

Wherein, in the embodiment of the present invention, the device for reducing the order of the antenna channel can detect the amplitude, phase, power, hardware, etc. of the uplink antenna channel. The specific detection method is the prior art, which is not described in this embodiment of the present invention.

S203. When the device for reducing the order of the antenna channel detects that the uplink antenna channel i is faulty, it sets the uplink antenna channel calibration compensation factor Ai=0; wherein, i∈{1, 2, 3...K}.

Specifically, after the order reduction device of the antenna channel detects the uplink antenna channel, the antenna channel calibration compensation factor Ak corresponding to each uplink antenna channel is obtained during the uplink antenna calibration process. At this time, the order reduction device of the antenna channel detects that the When there is a faulty uplink antenna channel i, in order to make the faulty uplink antenna channel i not affect the final shaping angle of the antenna, the shaping weight of the uplink antenna channel j is adjusted, that is, the uplink antenna channel i can be adjusted accordingly. The calibration compensation factor Ai of the uplink antenna channel is set to 0; where, i∈{1, 2, 3...K}.

It should be noted that the antenna channel calibration compensation factor of each antenna in the antenna array forms an antenna channel calibration compensation factor matrix. In the process of antenna calibration, each antenna is multiplied by its corresponding antenna channel calibration compensation factor to compensate for the difference in amplitude and phase between antennas, that is, amplitude and phase adjustment.

In this embodiment of the present invention, the first antenna channel in the previous embodiment is the uplink antenna channel i, and the first antenna channel calibration compensation factor in the previous embodiment is the uplink antenna channel calibration compensation factor Ai corresponding to the uplink antenna channel i.

It can be understood that when an antenna in the antenna array is faulty, in order to prevent the faulty antenna from affecting the beamforming of other antennas, the embodiment of the present invention can make the faulty antenna of the faulty antenna in the beamforming process. The forming weight on the above is 0, so as to achieve the purpose of the final forming data being 0.

Further, when the antenna channel reducing device detects that multiple antenna channels are faulty, the antenna channel reducing device sets the calibration compensation factors of multiple antenna channels corresponding to the multiple faulty antenna channels to 0.

Exemplarily, it is assumed that the antenna array has K uplink antenna channels, and K≥1, the order reduction device of the antenna channel detects that the power value of the uplink antenna channel i is abnormal, and then, the antenna channel corresponding to the uplink antenna channel i is calibrated for the compensation factor. Ai is set to 0; in the embodiment of the present invention, i is numbered from 1, where i∈{1, 2, 3...K}, and the specific numbering starts, which is not limited in the embodiment of the present invention.

S204. When the device for reducing the order of the antenna channel detects the uplink antenna channel t without fault, the calibration compensation factor At of the uplink antenna channel corresponding to the uplink antenna channel t is set to be unchanged; wherein, t∈{1, 2, 3 ...K}.

Specifically, after the device for reducing the order of the antenna channel detects the uplink antenna channel, the uplink antenna channel calibration compensation factor At for the detected uplink antenna channel t that is not faulty is the antenna channel calibration compensation obtained when the antenna calibration does not need to be changed. factor. Therefore, when the device for reducing the order of the antenna channel detects the uplink antenna channel t without fault, the device for reducing the order of the antenna channel may not change the calibration compensation factor At of the uplink antenna channel corresponding to the uplink antenna channel t, where t∈{ 1, 2, 3...K}.

In the embodiment of the present invention, t is numbered from 1, wherein t∈{1, 2, 3...K}, and the specific numbering starts, which is not limited in the embodiment of the present invention.

It should be noted that S203 and S204 are optional steps after S202, and one of the steps is selected to be executed according to the actual detection situation; that is, in this embodiment of the present invention, after S202, S203 or S204 may be executed. The execution sequence of , may be determined according to the actual situation, which is not limited in this embodiment of the present invention.

S205. When the downlink antenna calibration is performed by the antenna channel reducing device, the downlink antenna channel calibration compensation factor Bk is obtained; wherein k=1, 2, 3...K, where K is the maximum number of downlink antennas in the antenna array.

It should be noted that there are uplink antennas and downlink antennas in the antenna array, and the number of uplink antennas is the same as the number of downlink antennas. Therefore, the uplink antenna channels correspond to the downlink antenna channels. The device for reducing the order of the antenna channel can first detect the uplink antenna channel, and then detect the downlink antenna channel after completing the setting of the calibration compensation factor of the uplink antenna channel.

Specifically, when the downlink antenna calibration is performed by the device for reducing the order of the antenna channel, the downlink antenna channel calibration compensation factor Bk corresponding to the downlink antenna is obtained through the existing calculation method; wherein, k=1, 2, 3... K, K is the maximum number of downlink antennas in the antenna array.

In this embodiment of the present invention, the downlink antenna channel is a transmission channel, which can transmit signals.

It should be noted that Bk is the parameter representation of the downlink antenna channel calibration compensation factor used in the embodiment of the present invention, and may also be other representation symbols, and the specific representation of the downlink antenna channel calibration compensation factor is not limited in this embodiment of the present invention.

S206, the device for reducing the order of the antenna channel detects the downlink antenna channel.

When the downlink antenna calibration is performed by the antenna channel reducing device, after obtaining the downlink antenna channel calibration compensation factor Bk, k=1, 2, 3...K, K is the maximum number of downlink antennas in the antenna array. The antenna channel calibration compensation factor can be known , there are K downlink antennas in the antenna array in the embodiment of the present invention. Therefore, the device for reducing the order of the antenna channel detects the K downlink antenna channels corresponding to the K downlink antennas.

Wherein, in the embodiment of the present invention, the device for reducing the order of the antenna channel can detect the amplitude, phase, power, hardware, etc. of the downlink antenna channel. The specific detection method is the prior art, which is not described in this embodiment of the present invention.

S207. When the device for reducing the order of the antenna channel detects that the downlink antenna channel j is faulty, it sets the uplink antenna channel calibration compensation factor Aj=0 and the downlink antenna channel calibration compensation factor Bj=0; wherein, j∈{1, 2, 3... …K}.

In this embodiment of the present invention, the first antenna channel in the previous embodiment is the downlink antenna channel j, and the first antenna channel calibration compensation factor in the previous embodiment is the uplink antenna channel calibration compensation factor Aj corresponding to the uplink antenna channel j and the downlink The downlink antenna channel calibration compensation factor Bj corresponding to antenna channel j.

Specifically, after the downlink antenna channel is detected by the order reduction device of the antenna channel, the antenna channel calibration compensation factor Bk corresponding to each downlink antenna channel is obtained during the downlink antenna calibration process. At this time, the order reduction device of the antenna channel detects that When there is a faulty downlink antenna channel j, the uplink antenna channel calibration compensation factor Aj with the same number as the downlink antenna channel j can be set to 0, and the downlink antenna channel calibration compensation factor Bj corresponding to the downlink antenna channel j can be set to 0. ; where, j∈{1, 2, 3...K}.

It should be noted that when the downlink antenna channel j is faulty, the calibration compensation factor of the downlink antenna channel can be set to zero to ensure that the transmitted signal of the faulty channel is 0. At the same time, in order to make the faulty downlink antenna channel j not affect the final antenna For the shaping angle, the shaping weight of the downlink antenna channel j is adjusted, that is, the calibration compensation factor Aj of the uplink antenna channel corresponding to the number j is set to 0.

Further, when the device for reducing the order of the antenna channel detects that the downlink antenna channel j is faulty, it may only set the downlink antenna channel calibration compensation factor Bj=0.

At this time, the first antenna channel in the previous embodiment is the downlink antenna channel j, and the first antenna channel calibration compensation factor in the previous embodiment is the downlink antenna channel calibration compensation factor Bj corresponding to the downlink antenna channel j.

For example, when the downlink antenna channel is a broadcast channel, the broadcast channel includes various control channels, and it is more complicated to directly adjust the broadcast weight. The transmission signal of the channel is zero, while the transmission signal of the broadcast channel is zero, which affects the power gain of broadcast coverage, but does not affect the shaping angle. Therefore, in this case, it is only necessary to set the calibration compensation factor of the downlink antenna channel to 0. Can.

则：The specific processing process of the broadcast channel is as follows: assuming that the data of port p is d ^p , the data of the antenna ka _Rx after the port-to-antenna mapping is completed is

but:

为广播权值，d^p为广播数据，

为进行加权映射后的广播数据。in,

is the broadcast weight, d ^p is the broadcast data,

It is the broadcast data after weighted mapping.

进行天线校准。According to formula (2), the mapped data is re-mapped

Perform antenna calibration.

为下行天线通道校准补偿因子矩阵，d_IFFT为校准后的广播数据。当天线该广播的某个下行天线通道发生故障时，

中与该某个下行天线通道对应的下行天线通道校准补偿因子设置0。in,

The compensation factor matrix is calibrated for the downlink antenna channel, and d _IFFT is the calibrated broadcast data. When a certain downlink antenna channel of the broadcast of the antenna fails,

The calibration compensation factor of the downlink antenna channel corresponding to the certain downlink antenna channel is set to 0.

It can be understood that, since the downlink broadcast antenna channel calibration compensation factor of the faulty antenna channel has been set to be 0 by the device for reducing the order of the antenna channel, when the downlink broadcast is performed on the downlink broadcast antenna channel, the downlink on the faulty downlink broadcast antenna channel is set to 0. The broadcast data is 0, so that the normal operation of the services of other downlink broadcast antenna channels that are not faulty will not be affected.

S208. When the downlink antenna channel j and the uplink antenna channel j are detected to be faulty by the antenna channel reducing device, set the downlink antenna channel calibration compensation factor Bj=0 and the uplink antenna channel calibration compensation factor Aj=0; where, j∈{1 , 2, 3...K}.

In the embodiment of the present invention, the first antenna channel in the previous embodiment is the downlink antenna channel j and the uplink antenna channel j, and the first antenna channel calibration compensation factor in the previous embodiment is the uplink antenna channel calibration corresponding to the uplink antenna channel j The compensation factor Aj and the downlink antenna channel calibration compensation factor Bj corresponding to the downlink antenna channel j. Specifically, after the downlink antenna channel is detected by the downlink antenna channel, the antenna channel calibration compensation factor Bk corresponding to each downlink antenna channel and the antenna channel calibration compensation factor corresponding to each uplink antenna channel are obtained during the downlink antenna calibration process. Ak, at this time, when the downlink antenna channel j and the uplink antenna channel j with faults are detected by the order reduction device of the antenna channel, the calibration compensation factor Bj of the downlink antenna channel corresponding to the downlink antenna channel j can be set to 0, and the The uplink antenna channel calibration compensation factor Aj=0 corresponding to the uplink antenna channel j; wherein, j∈{1, 2, 3...K}.

S209. When the downlink antenna channel n without fault is detected by the antenna channel reducing device, the downlink antenna channel calibration compensation factor Bn corresponding to the downlink antenna channel n is set to be unchanged; wherein, n∈{1, 2, 3 ...K}.

Specifically, after the downlink antenna channel is detected by the device for reducing the order of the antenna channel, the antenna channel calibration compensation factor Bn for the detected downlink antenna channel n that is not faulty is the antenna channel calibration compensation factor obtained when the antenna calibration does not need to be changed. of. Therefore, when the device for reducing the order of the antenna channel detects the downlink antenna channel n without fault, the device for reducing the order of the antenna channel may not change the calibration compensation factor Bn of the downlink antenna channel corresponding to the downlink antenna channel n; wherein, n∈{ 1, 2, 3...K}.

In the embodiment of the present invention, n is numbered from 1, where n∈{1, 2, 3...K}, and the specific numbering starts, which is not limited in the embodiment of the present invention.

It should be noted that S207, S208 and S209 are optional steps after S206, and one of the steps is selected and executed according to the actual detection situation; that is, in this embodiment of the present invention, after S206, S207 or S208 may be executed. , S209 may also be executed, and the specific execution sequence may be determined according to the actual situation, which is not limited in this embodiment of the present invention.

S210, the antenna channel order reduction device adjusts the antenna shaping weight according to the antenna channel calibration compensation factor matrix, so that the shaping weight value on the antenna whose calibration compensation factor is 0 with the antenna channel is 0, thereby realizing antenna reduction; wherein , the antenna channel calibration compensation factor matrix includes K antenna channel calibration compensation factors corresponding to K antennas.

After the antenna channel reduction device sets the antenna channel calibration compensation factor of the faulty antenna channel, the antenna channel reduction device performs antenna compensation for the antennas in the antenna array according to the antenna channel calibration compensation factor matrix. Those skilled in the art can It is understood that since the antenna channel calibration factor corresponding to the faulty antenna channel is 0, the subcarriers on the probe signal received by the faulty antenna channel are all 0 (the frequency domain data are all 0), so that the normalized The estimated channel of the faulty antenna corresponds to 0, and then the calculated shaping weight corresponding to the faulty antenna channel is 0. When the data of all space-division users are mapped to the antenna array by multiplying with the shaping weight matrix, the shaping data is 0 on the faulty antenna, so it does not affect the data on other non-faulty antennas in the antenna array. The shaping angle and normal operation of downlink service data; wherein, the antenna channel calibration compensation factor matrix includes K antenna channel calibration compensation factors corresponding to K antennas.

Exemplarily, assuming that the antenna array has K uplink antenna channels, K≥1, the order reduction device of the antenna channel detects that the power value of the uplink antenna channel i is abnormal, and the antenna channel calibration compensation factor corresponding to the uplink antenna channel i is 0, Therefore, those skilled in the art can understand that the subcarriers on the sounding signal received by the uplink antenna channel i are all 0, so that the i+1th column in the channel estimation matrix of the normalized uplink antenna i is all 0, and then the i+1th row in the calculated shaping weight matrix with the uplink antenna channel i is all 0. When the data of all space-division users is mapped to K antennas by multiplying with the shaping weight matrix, the shaped data is 0 on the antenna i, that is, K-1 antennas are actually performing service data normally, It does not affect the normal operation of service data on other K-1 antennas in the antenna array; where, i∈{1, 2, 3...K}.

It should be noted that, for user service shaping data, the purpose of adjusting the shaping weight has been achieved by setting the calibration compensation factor of the uplink antenna channel corresponding to the antenna channel to 0 according to the description in the above-mentioned uplink antenna channel fault.

Specifically, in the antenna calibration process of the array of 64 antennas, it is assumed that after the received signal of the uplink antenna is subjected to Fourier transform, the extracted subcarriers of the 1200 detection signals are yf(k, ka _Rx , l), and k is Subcarrier index, ka _Rx is the receiving antenna index, l is the symbol index, w _{up_AC} is the antenna channel calibration compensation factor matrix composed of K antenna channel calibration compensation factors, where ka _Rx = 0, 1..., K, there are K roots in total The receiving antenna, the signal f _srs (k, ka _Rx , l) after antenna calibration and compensation is:

f _srs (k, ka _Rx , l)=yf(k, ka _Rx , l)·w _{up_AC} (k, ka _Rx ) (3)

The calibration compensation factor of the antenna channel corresponding to the ka-th _Rx antenna is set to 0, so that the sub-carriers on the detection signal received by the faulty antenna channel are all zero. It is further assumed that the normalized channel estimation value is h _srs (ka _Rx , m, Ni, q), where ka _Rx is the receiving antenna index, m is the RB index, Ni is the space division user index, and q is the stream index of a single user, then when calculating the shaping weight, first construct the An overall channel matrix is obtained, that is, an H(m) is constructed for each RB, m=1, . . . , 100. Assuming that the number of streams per user is two streams, H(m) is as follows.

则用户数据赋形过程为

根据空分用户数2Ni，得知

的维度为[1×2Ni]，通过矩阵相乘将所有空分用户的数据映射到K跟天线上。因为矩阵W_MU(m)的第i+1行全部为0，从而最终赋形数据在第i+1根天线上数据为0。The dimension of this matrix H(m) is [2Ni×K], 64 antennas are arranged in order in the horizontal direction, and the antennas 1 and 2 of Ni users are arranged in order in the vertical direction. Since the subcarrier on the probe signal received by the faulty antenna channel is set to 0, the channel estimate H of the corresponding antenna channel obtained according to the linear operation is also 0. Assuming that the faulty antenna channel is i (numbered from 0), then H( m) The i+1th column of the matrix is all 0, and then the space division shaping weight matrix W _MU (m) is calculated, and the matrix dimension is [K×2Ni], W _MU (m)=H ^H (m)(H (m)·H ^H (m)) ^-1 , m=1, . . . , 100. Since the i+1th column of the above H matrix is all 0, it can be deduced according to the matrix operation that the i+1th row of the matrix W _MU (m) is all 0. Assuming that the data of port p is d ^p , the data of antenna ka _Rx after the port-to-antenna mapping is completed is

Then the user data forming process is

According to the number of air separation users 2Ni, it is known that

The dimension of is [1×2Ni], and the data of all space division users are mapped to K and antennas by matrix multiplication. Because the i+1 th row of the matrix W _MU (m) is all 0, the final shaped data is 0 on the i+1 th antenna.

It should be noted that the failure of a certain uplink receiving channel will also affect the uplink Physical Uplink Shared Channel (PUSCH, Physical Uplink Shared Channel), Physical Random Access Channel (PRACH, Physical Random Access Channel) and Physical Uplink Control Channel ( Antenna reception of channels such as PUCCH, Physical Uplink ControlChannel). Since the device for reducing the order of the antenna channel has set the calibration compensation factor of the faulty uplink antenna channel to 0, the influence of the faulty uplink antenna channel will be minimized.

Specifically, for the PRACH and PUCCH channels, in the prior art, in the uplink demodulation process, the antenna is divided to perform operations, and then equal-gain combining is performed. Therefore, the device for reducing the order of the antenna channel sets the calibration compensation factor for the uplink antenna channel, so that the uplink The receiving frequency domain data of the antenna channel is 0, which will not affect the receiving gain of the normal antenna channel.

It can be understood that, since the order reduction device of the antenna channel has set the calibration compensation factor of the uplink receiving antenna channel of the faulty antenna channel to 0, therefore, when the uplink receiving and demodulation is performed on the uplink receiving antenna channel, the upper channel of the faulty uplink receiving antenna channel is The uplink received data is 0, so that the normal operation of the services of other uplink antenna channels that are not faulty is not affected.

It should be noted that, for the PUSCH channel, in the prior art, channel estimation is performed by dividing the antenna, which will not be affected. However, when the PUSCH channel is equalized, since the signal of a certain uplink antenna is zero, the rank of the interference matrix will be lacking. The inversion cannot be obtained. In this case, the small factor matrix compensation method in the prior art can be used to avoid the process of inversion. Therefore, by setting the uplink antenna channel calibration compensation factor of the uplink corresponding channel to 0, the device for reducing the order of the antenna channel can ensure the downlink shaping performance and uplink reception and demodulation performance without changing the relative processing dimension of the base station antenna.

In the method for reducing the order of the antenna channel provided by the embodiment of the present invention, the antenna channel is detected by performing antenna calibration; when a faulty first antenna channel is detected, the first antenna channel corresponding to the first antenna channel is calibrated and compensated The factor is set to 0; when a fault-free second antenna channel is detected, the calibration compensation factor of the second antenna channel corresponding to the second antenna channel is set to remain unchanged; according to the calibration compensation factor matrix of the antenna channel, the shaping weight of the antenna is adjusted value, so that the shaping weight value on the antenna corresponding to the first antenna channel calibration compensation factor is 0, and the antenna order reduction is realized. With the above technical implementation scheme, since the antenna channel reducing device performs antenna compensation on the antennas in the antenna array according to the antenna channel calibration compensation factor matrix, those skilled in the art can understand that the antenna channel calibration factor corresponding to the faulty antenna channel is 0, therefore, the subcarriers on the probe signal received by the faulty antenna channel are all 0 (the frequency domain data are all 0), so that the channel estimation of the normalized faulty antenna corresponds to 0, and then the calculated value is the same as this The shape weight corresponding to the faulty antenna channel is 0. When the data of all space division users are mapped to the antenna array by multiplying with the shaping weight matrix, the shaping data is 0 on the faulty antenna, and the order reduction device of the antenna channel enables the base station antenna to operate without affecting the base station. On the basis of system performance and without changing the dimension of the antenna matrix, it is easier to reduce the order of the antenna channel to eliminate the influence of the faulty antenna channel on the beamforming, and to ensure the normal operation of the business.

Embodiment 3

As shown in FIG. 4 , an embodiment of the present invention provides a device 1 for reducing the order of an antenna channel, and the device 1 may include:

The detection unit 10 is used to detect the antenna channel during antenna calibration.

The setting unit 11 is configured to set the calibration compensation factor of the first antenna channel corresponding to the first antenna channel to 0 when the detection unit 10 detects the faulty first antenna channel.

The setting unit 11 is further configured to set the calibration compensation factor of the second antenna channel corresponding to the second antenna channel to be unchanged when the detection unit 10 detects the second antenna channel without fault.

The adjustment unit 12 is configured to adjust the shaping weight of the antenna according to the antenna channel calibration compensation factor matrix set by the setting unit 11 so as to correspond to the first antenna channel calibration compensation factor set by the setting unit 11 The shaping weight value on the antenna is 0 to realize antenna reduction; wherein, the antenna channel calibration compensation factor matrix includes the first antenna channel calibration compensation factor and the second antenna channel set by the setting unit 11. Calibration compensation factor.

Optionally, the antenna calibration includes uplink antenna channel calibration and downlink antenna channel calibration.

The detection unit 10 is specifically configured to detect the uplink antenna channel when performing the uplink antenna calibration, and detect the downlink antenna channel when performing the downlink antenna calibration.

Optionally, as shown in FIG. 5 , the apparatus 1 further includes: an acquisition unit 13 .

The acquisition unit 13 is used for acquiring the calibration compensation factor Ak of the uplink antenna channel before the detection unit 10 detects the uplink antenna channel; wherein, k=1, 2, 3...K, and K is the maximum value in the antenna array The number of uplink antennas; and, before the detection unit 10 detects the downlink antenna channel, obtains the downlink antenna channel calibration compensation factor Bk; wherein, k=1, 2, 3...K, K is the largest downlink antenna in the antenna array number.

Optionally, the first antenna channel detected by the detection unit 10 is uplink antenna channel i, and the first antenna channel calibration compensation factor acquired by the acquisition unit 13 is the uplink antenna corresponding to the uplink antenna channel i. Channel calibration compensation factor Ai, where i∈{1, 2, 3...K}.

The setting unit 11 is specifically configured to set the uplink antenna channel calibration compensation factor Ai=0 acquired by the acquisition unit 13 when the detection unit 10 detects that the uplink antenna channel i is faulty.

Optionally, the first antenna channel detected by the detection unit 10 is a downlink antenna channel j, or the first antenna channel detected by the detection unit 10 is a downlink antenna channel j and an uplink antenna channel j.

The first antenna channel calibration compensation factor acquired by the acquiring unit 13 is an uplink antenna channel calibration compensation factor Aj corresponding to the uplink antenna channel j and a downlink antenna channel calibration compensation factor Bj corresponding to the downlink antenna channel j, wherein , j∈{1, 2, 3...K}.

The setting unit 11 is specifically configured to set the uplink antenna channel calibration compensation factor Aj=0 acquired by the acquiring unit 13 when the detection unit 10 detects that the downlink antenna channel j is faulty, and set the The downlink antenna channel calibration compensation factor Bj=0 obtained by the obtaining unit 13 .

Optionally, the first antenna channel detected by the detection unit 10 is a downlink antenna channel j, and the first antenna channel calibration compensation factor acquired by the acquisition unit 13 is the downlink antenna corresponding to the downlink antenna channel j. Channel calibration compensation factor Bj, where j∈{1, 2, 3...K}.

The setting unit 11 is specifically configured to set the downlink antenna channel calibration compensation factor Bj=0 acquired by the acquisition unit 13 when the detection unit 10 detects that the downlink antenna channel j is faulty.

It should be noted that, the detection unit 10, the setting unit 11, the adjustment unit 12, and the acquisition unit 13 in the embodiment of the present invention can all be performed by a processor. The processor may be a central processing unit, or a specific integrated circuit, or one or more integrated circuits configured to implement the present invention.

The antenna order reduction device in this embodiment of the present invention may be a separate device, or may be a combination of certain modules in the beamforming and antenna calibration process of an existing antenna. The specific implementation manner is not specified in this embodiment of the present invention. limit.

In the antenna price reduction device provided by the embodiment of the present invention, the antenna channel is detected by performing antenna calibration; when a faulty first antenna channel is detected, the calibration compensation factor of the first antenna channel corresponding to the first antenna channel is set to 0; when detecting the second antenna channel without fault, set the calibration compensation factor of the second antenna channel corresponding to the second antenna channel to be unchanged; according to the calibration compensation factor matrix of the antenna channel, adjust the shaping weight of the antenna so that The shaping weight value on the antenna corresponding to the first antenna channel calibration compensation factor is 0, and the antenna order reduction is realized. With the above technical implementation scheme, since the antenna channel reducing device performs antenna compensation on the antennas in the antenna array according to the antenna channel calibration compensation factor matrix, those skilled in the art can understand that the antenna channel calibration factor corresponding to the faulty antenna channel is 0, therefore, the subcarriers on the probe signal received by the faulty antenna channel are all 0 (the frequency domain data are all 0), so that the channel estimation of the normalized faulty antenna corresponds to 0, and then the calculated value is the same as this The shape weight corresponding to the faulty antenna channel is 0. When the data of all space division users are mapped to the antenna array by multiplying with the shaping weight matrix, the shaping data is 0 on the faulty antenna, and the order reduction device of the antenna channel enables the base station antenna to operate without affecting the base station. On the basis of system performance and without changing the dimension of the antenna matrix, it is easier to reduce the order of the antenna channel to eliminate the influence of the faulty antenna channel on the beamforming, and to ensure the normal operation of the business.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (10)

1. A method for reducing the order of an antenna channel, wherein the method comprises: When performing antenna calibration, the antenna channel is detected; When a faulty first antenna channel is detected, the calibration compensation factor of the first antenna channel corresponding to the first antenna channel is set to 0; When detecting the second antenna channel without fault, setting the calibration compensation factor of the second antenna channel corresponding to the second antenna channel to be unchanged; According to the calibration compensation factor matrix of the antenna channel, the shaping weight of the antenna is adjusted, so that the shaping weight on the antenna corresponding to the calibration compensation factor of the first antenna channel is 0, so as to realize the reduction of the order of the antenna; wherein, the antenna channel The calibration compensation factor matrix includes the first antenna channel calibration compensation factor and the second antenna channel calibration compensation factor. 2. The method for reducing the order of an antenna channel according to claim 1, wherein the antenna calibration comprises uplink antenna channel calibration and downlink antenna channel calibration; When performing antenna calibration, the antenna channel is detected, including: When performing the uplink antenna calibration, the uplink antenna channel is detected, and when the downlink antenna calibration is performed, the downlink antenna channel is detected; Correspondingly, before the detection of the uplink antenna channel, the method further includes: Obtain the calibration compensation factor A _k of the uplink antenna channel; wherein, k=1, 2, 3...K, and K is the maximum number of uplink antennas in the antenna array; Before the detection of the downlink antenna channel, the method further includes: Obtain the downlink antenna channel calibration compensation factor B _k ; where k=1, 2, 3...K, and K is the maximum number of downlink antennas in the antenna array. 3. The method for reducing the order of an antenna channel according to claim 2, wherein the first antenna channel is an uplink antenna channel i, and the first antenna channel calibration compensation factor is a corresponding value of the uplink antenna channel i Upstream antenna channel calibration compensation factor A _i , where i∈{1, 2, 3...K}; Correspondingly, when the faulty first antenna channel is detected, setting the calibration compensation factor of the first antenna channel corresponding to the first antenna channel to 0, including: When it is detected that the uplink antenna channel i is faulty, the uplink antenna channel calibration compensation factor A _i =0 is set. 4. The method for reducing the order of an antenna channel according to claim 2, wherein the first antenna channel is a downlink antenna channel j and an uplink antenna channel j; The first antenna channel calibration compensation factor is an uplink antenna channel calibration compensation factor Aj corresponding to the uplink antenna channel j and a downlink antenna channel calibration compensation factor Bj corresponding to the downlink antenna channel j, where j∈{1, 2 , 3...K}; Correspondingly, when the faulty first antenna channel is detected, setting the calibration compensation factor of the first antenna channel corresponding to the first antenna channel to 0, including: When it is detected that the downlink antenna channel j is faulty, the uplink antenna channel calibration compensation factor Aj=0 and the downlink antenna channel calibration compensation factor Bj=0 are set. 5 . The method for reducing the order of an antenna channel according to claim 2 , wherein the first antenna channel is a downlink antenna channel j, and the first antenna channel calibration compensation factor is corresponding to the downlink antenna channel j. 6 . Downlink antenna channel calibration compensation factor Bj, where j∈{1, 2, 3...K}; Correspondingly, when the faulty first antenna channel is detected, setting the calibration compensation factor of the first antenna channel corresponding to the first antenna channel to 0, including: When it is detected that the downlink antenna channel j is faulty, the downlink antenna channel calibration compensation factor Bj=0 is set. 6. A device for reducing the order of an antenna channel, wherein the device comprises: The detection unit is used to detect the antenna channel during antenna calibration; a setting unit, configured to set the calibration compensation factor of the first antenna channel corresponding to the first antenna channel to 0 when the detection unit detects the first antenna channel having a fault; The setting unit is further configured to set the calibration compensation factor of the second antenna channel corresponding to the second antenna channel to be unchanged when the detection unit detects the second antenna channel without fault; an adjustment unit, configured to adjust the antenna shaping weight according to the antenna channel calibration compensation factor matrix set by the setting unit, so that the antenna corresponding to the first antenna channel calibration compensation factor set by the setting unit The shaping weight is 0 to realize antenna reduction; wherein, the antenna channel calibration compensation factor matrix includes the first antenna channel calibration compensation factor and the second antenna channel calibration compensation factor set by the setting unit. 7. The device for reducing the order of an antenna channel according to claim 6, wherein the antenna calibration comprises an uplink antenna channel calibration and a downlink antenna channel calibration; The detection unit is specifically configured to detect the uplink antenna channel when performing the uplink antenna calibration, and detect the downlink antenna channel when performing the downlink antenna calibration; Correspondingly, the device further includes: an acquisition unit; The acquisition unit is used for acquiring the calibration compensation factor A _k of the uplink antenna channel before the detection unit detects the uplink antenna channel; wherein, k=1, 2, 3...K, and K is the maximum uplink in the antenna array The number of antennas; and, before the detection unit detects the downlink antenna channel, obtains the downlink antenna channel calibration compensation factor B _k ; where k=1, 2, 3...K, K is the maximum number of downlink antennas in the antenna array . 8 . The apparatus for reducing the order of an antenna channel according to claim 7 , wherein the first antenna channel detected by the detection unit is an uplink antenna channel i, and the first antenna channel acquired by the acquisition unit The calibration compensation factor is the upstream antenna channel calibration compensation factor A i corresponding to the upstream antenna channel _i , where i∈{1, 2, 3...K}; The setting unit is specifically configured to set the uplink antenna channel calibration compensation factor A _i =0 acquired by the acquisition unit when the detection unit detects that the uplink antenna channel i is faulty. 9. The device for reducing the order of an antenna channel according to claim 7, wherein the first antenna channel detected by the detection unit is a downlink antenna channel j and an uplink antenna channel j; The first antenna channel calibration compensation factor acquired by the acquiring unit is an uplink antenna channel calibration compensation factor Aj corresponding to the uplink antenna channel j and a downlink antenna channel calibration compensation factor Bj corresponding to the downlink antenna channel j, wherein, j∈{1, 2, 3...K}; The setting unit is specifically configured to, when the detection unit detects that the downlink antenna channel j is faulty, set the uplink antenna channel calibration compensation factor Aj=0 acquired by the acquisition unit, and set the acquisition unit to acquire The downlink antenna channel calibration compensation factor Bj=0. 10. The apparatus for reducing the order of an antenna channel according to claim 7, wherein the first antenna channel detected by the detection unit is a downlink antenna channel j, and the first antenna channel acquired by the acquisition unit The calibration compensation factor is the downlink antenna channel calibration compensation factor Bj corresponding to the downlink antenna channel j, where j∈{1, 2, 3...K}; The setting unit is specifically configured to set the downlink antenna channel calibration compensation factor Bj=0 acquired by the acquisition unit when the detection unit detects that the downlink antenna channel j is faulty.

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