CN114070430B

CN114070430B - Triggering method and device for antenna calibration

Info

Publication number: CN114070430B
Application number: CN202010746555.6A
Authority: CN
Inventors: 马净净; 陈长华
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2022-09-16
Anticipated expiration: 2040-07-29
Also published as: CN114070430A

Abstract

The embodiment of the invention provides a triggering method and a triggering device for antenna calibration, which are applied to an Active Antenna Unit (AAU), wherein the method comprises the following steps: polling the channel temperature of each radio frequency board of the AAU at fixed time; calculating the temperature difference between the current channel temperature of each radio frequency board and the channel temperature when the temperature compensation is triggered last time; under the condition that the temperature difference is determined to meet the preset condition, triggering all radio frequency boards of the AAU to execute temperature compensation operation; triggering execution of an antenna calibration operation after completion of the temperature compensation operation. The embodiment of the invention can improve the timeliness and the calibration efficiency of antenna calibration, improve the stability of the terminal speed, and further ensure the performance of an NR system.

Description

Triggering method and device for antenna calibration

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for triggering antenna calibration.

Background

The 5G (5th Generation Mobile Networks, New Radio) NR (New Radio) is a global 5G standard based on a completely New air interface design of OFDM (Orthogonal Frequency Division Multiplexing).

In the NR system, the main process of ac (Antenna calibration) calibration is controlled and managed by an arm (advanced RISC machine) processor on an AAU (Active Antenna Unit). The trigger timing for AC calibration depends on the artificially configured timing period.

However, in practical applications, the AC calibration effect may be disabled by the influence of the external environment, so that the downlink rate of the user accessing the base station may show a significant downward trend when the external environment changes. For example, the AAU channel status may change due to an increase or decrease in the number of users accessing the base station, or due to a change in external environment such as artificial use of a fan to dissipate heat.

The current antenna period calibration is generally performed according to a fixed period, changes of the phase and amplitude of an antenna path caused by changes of factors such as environment in a certain period cannot be found, and only correction can be performed until the next period calibration, so that the calibration factor cannot be updated in time, the terminal service rate cannot be recovered in time, and the performance of an NR system is further influenced.

Disclosure of Invention

The embodiment of the invention provides a triggering method and a triggering device for antenna calibration, which can trigger aperiodic AC antenna calibration according to temperature change, can update calibration factors in time, enables the service rate of a terminal to be recovered to be normal in time, and ensures the performance of an NR system.

The embodiment of the invention provides a triggering method for antenna calibration, which is applied to an Active Antenna Unit (AAU), and comprises the following steps:

polling the channel temperature of each radio frequency board of the AAU at fixed time;

calculating the temperature difference between the current channel temperature of each radio frequency board and the channel temperature when the temperature compensation is triggered last time;

under the condition that the temperature difference is determined to meet the preset condition, triggering all radio frequency boards of the AAU to execute temperature compensation operation;

triggering execution of an antenna calibration operation after completion of the temperature compensation operation.

The embodiment of the invention provides a trigger device for antenna calibration, which is applied to an Active Antenna Unit (AAU), and comprises:

the timing polling module is used for polling the channel temperature of each radio frequency board of the AAU at a timing;

the temperature difference calculation module is used for calculating the temperature difference between the current channel temperature of each radio frequency board and the channel temperature when the temperature compensation is triggered last time;

the temperature compensation triggering module is used for triggering all the radio frequency boards of the AAU to execute temperature compensation operation under the condition that the temperature difference is determined to meet a preset condition;

and the calibration triggering module is used for triggering the execution of the antenna calibration operation after the temperature compensation operation is completed.

The embodiment of the invention has the following advantages:

the embodiment of the invention triggers the antenna calibration operation in time through the temperature change, can adjust the corresponding state of the calibration factor in time, compensates the loss of the uplink and downlink amplitude phases, further improves the strain capacity of the base station and the terminal accessed to the base station on the change of the external environment, reduces the influence on the peak speed of a user as much as possible, improves the stability of the terminal speed, and further can ensure the performance of an NR system. In addition, the embodiment of the invention can trigger the aperiodic antenna calibration once after each temperature compensation, thereby omitting the step of manually triggering the antenna calibration, not only ensuring that the speed of the terminal accessed to the base station can be recovered to a normal range in time, but also saving the labor cost and improving the timeliness and the calibration efficiency of the antenna calibration.

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 of the present invention will be 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 that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 shows a flow chart of an embodiment of a triggering method for antenna calibration according to the present invention;

FIG. 2 is a schematic diagram illustrating a periodic triggered antenna calibration procedure in accordance with the present invention;

FIG. 3 is a flow chart illustrating a state of the present invention for adding temperature compensation to periodically triggered antenna calibration to trigger aperiodic antenna calibration;

FIG. 4 is a block diagram of an embodiment of a triggering device for antenna calibration according to the present invention;

fig. 5 shows a schematic structural diagram of an electronic device provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Method embodiment one

Referring to fig. 1, a flowchart of an embodiment of a triggering method for antenna calibration according to the present invention is shown, where the method is applied to an active antenna unit AAU, and the method specifically includes:

step 101, polling the channel temperature of each radio frequency board of the AAU at regular time;

102, calculating the temperature difference between the current channel temperature of each radio frequency board and the channel temperature when the temperature compensation is triggered last time;

103, under the condition that the temperature difference is determined to meet the preset condition, triggering all radio frequency boards of the AAU to execute temperature compensation operation;

and 104, triggering to execute antenna calibration operation after the temperature compensation operation is completed.

The triggering method for antenna calibration provided by the embodiment of the invention can be applied to the AAU of the base station and is used for automatically triggering AC antenna calibration operation. It should be noted that, the application scenario of the base station is not limited in the embodiment of the present invention, and the base station may be a base station device in any communication system. The communication System includes, but is not limited to, a GSM (global System for Mobile communication) System, a CDMA (Code Division multiple access) System, a WCDMA (Wideband Code Division multiple access) System, a GPRS (General Packet Radio Service), an LTE (Long term evolution), an LTE FDD (Frequency Division Duplex) System, an LTE TDD (Time Division Duplex) System, a UMTS (Universal Mobile communication System), a Universal Mobile communication System, a WiMAX (world interoperability for microwave access), a global interconnect microwave access (Worldwide interoperability for microwave access) communication System, a 5G (5th-Generation, fifth-Generation Mobile communication) System, or a New Radio communication (NR).

Taking the system software of the AAU device of 64A as an example, the AC antenna calibration main process is controlled and managed by the ARM processor on the AAU. For convenience of description, the AAU in the NR system is taken as an example in the embodiment of the present invention, and the triggering methods of the antenna calibration in other scenarios may be referred to each other.

In practical application, the antenna calibration effect may be disabled due to the influence of the external environment, and only the calibration can be performed after the next period of calibration, so that the calibration factor cannot be updated in time, and the performance of the NR system is affected. In order to enable an NR system to trigger antenna calibration in time and update calibration factors in time under the influence of environmental changes, the embodiment of the present invention provides a triggering method for performing aperiodic antenna calibration through temperature compensation. In practical application, the main environmental factor affecting the antenna calibration is the temperature of the radio frequency path, and therefore, the triggering of the antenna calibration can be more timely by using the temperature compensation caused by the temperature change as the triggering time of the antenna calibration.

Specifically, the channel temperature of each radio frequency board of the AAU can be polled at regular time through an interface board in the AAU; calculating the temperature difference between the current channel temperature of each radio frequency board and the channel temperature when the temperature compensation is triggered last time; under the condition that the temperature difference is determined to meet the preset condition, triggering all radio frequency boards of the AAU to execute temperature compensation operation; and triggering execution of an antenna calibration operation after completion of the temperature compensation operation. The interface board refers to an AIU (Active antenna Ir interface Unit), and the RF board refers to an ARU (Active antenna RF Unit). The current channel temperature refers to the temperature of each channel of each ARU of the AAU currently polled by the AIU, and the channel temperature when the temperature compensation is triggered last time refers to the temperature of each channel of each ARU of the AAU when the temperature compensation is triggered last time.

It should be noted that the period of the timed polling is not limited in the embodiment of the present invention, and the embodiment of the present invention takes the example of the timed polling every 3 minutes as an example.

In an alternative embodiment of the invention, the channel temperature may include: channel temperature of a decision feedback equalizer, channel temperature of a power amplifier, channel temperature of a transceiver.

In the embodiment of the present invention, the AAU triggers the AIU to poll the channel temperature of each ARU every 3 minutes, including the channel temperature of DFE (Decision Feedback Equalizer) of each ARU, the channel temperature of PA (Power Amplifier), the channel temperature of TRX (Transceiver), and so on.

In analog devices, the parameters of the rf hardware typically need to be updated as the temperature and frequency change. Therefore, in the initialization and operation processes of the AAU, the embodiment of the invention polls the channel temperature of each radio frequency board of the AAU at regular time, and calculates the temperature difference between the current channel temperature of each radio frequency board and the channel temperature when the temperature compensation is triggered last time; and under the condition that the temperature difference is determined to meet the preset condition, triggering all the radio frequency boards of the AAU to execute temperature compensation operation so as to meet the calibration relation of the channels of the radio frequency boards of the AAU, namely ensuring that fixed input can obtain fixed output no matter how the temperature and the frequency change.

In an optional embodiment of the present invention, the determining that the temperature difference satisfies the preset condition in step 103 specifically includes:

step S11, determining the maximum value in the temperature difference of the temperature of each channel of each radio frequency board;

and step S12, if the maximum value is larger than a preset threshold value, determining that the temperature difference meets a preset condition.

In the timed polling task of every 3 minutes, the AIU polls the PA channel temperature, DFE channel temperature, TRX temperature of each ARU, calculates the temperature difference DeltaT between the current PA channel temperature of each ARU and the last PA channel temperature when temperature compensation was triggered last time, compares the temperature differences DeltaT of the PA channels of all ARUs, and determines the maximum value of the temperature differences DeltaT, which is supposed to be recorded as T1. If T1 is greater than a preset threshold for PA channel temperature, such as MAX1, then the temperature difference is determined to satisfy a preset condition.

Similarly, the AIU calculates the temperature difference Δ T between the current DFE channel temperature for each slice of ARU and the last DFE channel temperature at the time of last triggering temperature compensation, compares the temperature differences Δ T of the DFE channels for all ARUs, and determines the maximum value therein, assumed to be T2. If T2 is greater than a preset threshold for the DFE channel temperature, such as MAX2, then the temperature difference is determined to satisfy a preset condition.

Similarly, the AIU calculates the temperature difference DeltaT between the current TRX channel temperature of each ARU and the previous TRX channel temperature when temperature compensation was last triggered, compares the temperature differences DeltaT of the TRX channels of all ARUs, and determines the maximum value of the temperature differences DeltaT, which is supposed to be T3. If T3 is greater than a preset threshold for TRX channel temperature, such as MAX3, then the temperature difference is determined to satisfy a preset condition.

In specific implementation, a preset threshold may be set for each channel temperature, where the preset threshold is a preset threshold in celsius degrees, and the preset threshold may be flexibly set as required. In one example, the preset threshold for the PA channel temperature is set to 5 degrees Celsius, the preset threshold for the DFE channel temperature is set to 3 degrees Celsius, the preset threshold for the TRX channel temperature is set to 3 degrees Celsius, and so on. Alternatively, a preset threshold may be uniformly set for each channel temperature. The preset thresholds, such as setting the PA channel temperature, DFE channel temperature, and TRX channel temperature, are all 3 degrees celsius.

In the embodiment of the invention, the temperature of each channel of each radio frequency board of the AAU is polled at regular time, all the radio frequency boards of the AAU are triggered to execute the temperature compensation operation under the condition that the temperature difference of any one channel temperature meets the preset condition, and the operation of executing the antenna calibration is triggered after the temperature compensation operation is finished. Therefore, as long as the temperature change of a certain channel of one radio frequency board exceeds a preset threshold value, all the radio frequency boards of the AAU can be automatically triggered to execute temperature compensation operation and trigger aperiodic antenna calibration operation, the temperature compensation can be timely carried out on the radio frequency boards of the AAU, and the condition that the calibration factors of the antenna cannot be timely updated due to the change of the environment (temperature) can be reduced as much as possible. Therefore, the embodiment of the invention can trigger the antenna calibration in time, update the calibration factor in time, compensate the loss amplitude and phase, recover the terminal speed of the access base station to the normal range in time and ensure the performance of the NR system under the influence of environmental change.

In an optional embodiment of the present invention, in the case that it is determined that the temperature difference satisfies the preset condition, the step 103 triggers all the rf boards of the AAU to perform a temperature compensation operation, including:

and under the condition that the temperature difference is determined to meet a preset condition, sending a notification message carrying a preset mark to each radio frequency board of the AAU so as to trigger all the radio frequency boards of the AAU to execute temperature compensation operation.

In an embodiment of the invention, the AIU will poll the PA channel temperature, DFE channel temperature, TRX temperature for each ARU, and the AIU calculates the maximum temperature difference T1 for the PA channels of all ARUs for each ARU, the maximum temperature difference T2 for the DFE channels of all ARUs, and the maximum temperature difference T3 for the TRX channels of all ARUs.

Take the example of setting the preset threshold for the PA channel temperature to 5 degrees celsius, setting the preset threshold for the DFE channel temperature to 3 degrees celsius, and setting the preset threshold for the TRX channel temperature to 3 degrees celsius. And if the AIU calculates that T1 is more than 5 ℃, sending a notification message carrying a preset mark to each radio frequency board of the AAU so as to trigger all the radio frequency boards of the AAU to execute temperature compensation operation. Similarly, if the AIU calculates that T2 is greater than 3 degrees celsius, a notification message carrying a preset flag is sent to each rf board of the AAU to trigger all rf boards of the AAU to perform a temperature compensation operation. Or if the AIU calculates that T3 is greater than 3 ℃, sending a notification message carrying a preset flag to each radio frequency board of the AAU to trigger all the radio frequency boards of the AAU to execute temperature compensation operation.

The preset flag may be set according to actual needs, for example, a temperature compensation flag bit may be set in the message, and when the AIU determines that the temperature difference satisfies the preset condition, the AIU sends a notification message to the ARU, and sets the temperature compensation flag bit in the notification message to 1. The ARU receives the notification message from the AIU, if the temperature compensation flag position in the notification message is analyzed to be 1, all radio frequency boards of the AAU are triggered to execute temperature compensation operation, and after the temperature compensation is completed, the AAU is informed to trigger antenna calibration operation.

Optionally, the triggering manner of the temperature compensation may further include: triggering in an initialization process when a radio frequency board (ARU) is started; or a trigger when a change in carrier is caused by cell activation or deactivation. The operation of triggering the antenna calibration may also be performed automatically after the triggering of the temperature compensation operation described above.

By the embodiment of the invention, the antenna calibration operation can be triggered in time through the change of the temperature, and the corresponding state of the calibration factor can be adjusted in time to compensate the loss of the uplink and downlink amplitude phases, so that the strain capacity of the base station and the terminal accessed to the base station on the change of the external environment is improved, the influence on the peak speed of a user is reduced as much as possible, and the stability of the terminal speed is improved. In addition, the embodiment of the invention can trigger the aperiodic antenna calibration once after each temperature compensation, thereby omitting the step of manually triggering the antenna calibration, not only ensuring that the speed of the terminal accessed to the base station can be recovered to a normal range more timely, but also saving the labor cost and improving the efficiency of the antenna calibration.

In an optional embodiment of the present invention, the triggering, in step 104, to execute an antenna calibration operation may specifically include:

step S21, sending an antenna calibration command to a programmable logic PL module in the AAU;

step S22, the PL module responds to the antenna calibration command and sends a data capture command to a Field Programmable Gate Array (FPGA) module in the AAU;

step S23, the FPGA module responds to the data grabbing command, grabs the time domain data of the target position and sends the grabbed time domain data to the PL module;

step S24, the PL module carries out antenna calibration according to the received time domain data to obtain calibration factors of a receiving channel and a sending channel, and sends the calibration factors to the FPGA module;

and step S25, the FPGA module carries out frequency domain weighting processing on the receiving channel and the sending channel according to the calibration factor.

Taking the system software of the AAU device of 64A as an example, the AC antenna calibration main process is controlled and managed by the ARM processor on the AAU. After the AAU triggers all radio frequency boards to perform temperature compensation operation, it may send an antenna calibration command to a PL (programmable Logic) module in the AAU, where the command includes a calibration cell number, a cell calibration parameter, and the like, and then an ARM core of the AAU starts a transceiver AC antenna calibration procedure of an internal single cell. The ARM will complete the entire AC antenna calibration.

The PL module responds to the antenna calibration command and sends a data grabbing command to an FPGA (Field Programmable Gate Array) module in the AAU, and the FPGA module responds to the data grabbing command, grabs time domain data of a target position and sends the grabbed time domain data to the PL module; the PL module carries out antenna calibration according to the received time domain data to obtain calibration factors of a receiving channel and a sending channel, and sends the calibration factors to the FPGA module; and the FPGA module carries out frequency domain weighting processing on the receiving channel and the sending channel according to the calibration factor so as to finish the calibration process.

And when calibration is sent, the FPGA module sends a calibration sequence to carry out calibration. And during calibration, the calibration receiving sequence is also transmitted by the FPGA built-in sequence. After the calibration is completed, the ARM is responsible for configuring the calibration factors to the FPGA for frequency domain weighting.

In an optional embodiment of the invention, the method may further comprise:

step S31, periodically receiving an antenna calibration command from a baseband processing unit (BBU);

step S32, responding to the antenna calibration command, and executing antenna calibration operation;

and step S33, returning an antenna calibration result to the BBU.

The embodiment of the invention can not only carry out aperiodic trigger antenna calibration through temperature compensation, but also periodically receive an antenna calibration command from a baseband processing unit (BBU) and periodically trigger antenna calibration.

Referring to fig. 2, a schematic diagram of a periodic trigger antenna calibration procedure according to an embodiment of the present invention is shown. Specifically, the OM module on the BBU detects in real time whether a period triggering antenna calibration has arrived, and if the period has arrived, sends an antenna calibration command to the PL module in the AAU through a corresponding channel (the OM channel of the AAU). The command will contain the calibration cell number, cell calibration parameters, etc., and then the ARM core of the AAU will start the transceiver AC calibration procedure of the internal single cell. The ARM will complete all AC calibration work.

In practical applications, the antenna calibration works in a GP (Guard Period) time slot, which may interfere with the uplink random access signal, and the performance of the radio frequency hardware generally changes slowly, so that the trigger Period of the periodic antenna calibration operation is not set too frequently. The antenna calibration period can be configured by the OM module of the BBU, for example, the antenna calibration period can be set to 1 hour. After an antenna calibration period is set through an OM module of the BBU, the antenna calibration is automatically triggered every 1 hour after the initialization calibration, and the calibration factor is updated in time.

In an optional embodiment of the present invention, the periodically polling the channel temperature of each rf board of the AAU in step 101 includes:

and in the access state and the working state of the base station, polling the channel temperature of each radio frequency board of the AAU at regular time through an interface board in the AAU.

The embodiment of the invention triggers the initialization calibration of the antenna in the initialization state of the base station, triggers the periodic antenna calibration through the OM module of the BBU in the access state, polls the channel temperature of each radio frequency board of the AAU in the access state and the working state at fixed time through the interface board in the AAU, and further triggers the aperiodic antenna calibration through the temperature compensation.

Referring to fig. 3, a flow chart of a state of adding temperature compensation to trigger aperiodic antenna calibration based on periodic trigger antenna calibration in the embodiment of the present invention is shown.

Referring to tables 1 to 3, the statistical test data of the NR base station PA temperature and the terminal peak speed variation according to the embodiment of the present invention are shown. The test data in tables 1 to 3 are 3 sets of test data recorded by repeatedly raising and lowering the temperature of the test environment of the base station to detect the influence of the PA temperature of the AAU on the peak velocity without triggering the antenna calibration.

TABLE 1

TABLE 2

TABLE 3

As can be seen from the test data in tables 1 to 3, when the temperature change of PA reaches 3 ℃ to 4 ℃, the peak speed of the terminal changes obviously, and the change reaches about 200 MB/s. It can be seen that a temperature change of around 3 degrees celsius can already cause the calibration factor to fail without triggering the antenna calibration during the test. At this point, the antenna calibration needs to be retriggered to calculate the channel estimate to compensate for the phase and amplitude before the normal rate can be recovered.

According to the embodiment of the invention, the reasonable preset threshold value of the channel temperature change is set, so that the antenna calibration can be triggered in time according to the environmental change under the condition of reasonable temperature compensation frequency, and the performance of the NR system can be optimized.

According to the embodiment of the invention, on the basis of the calibration of the periodic trigger antenna, the calibration of the non-periodic trigger antenna is carried out through temperature compensation. On the basis of periodically updating the calibration factor, the base station can adapt to the scene of environment change, when the number of access users of the base station is increased, the power is increased due to the increase of the load, the temperature of a channel PA is further increased, the phase amplitude of a radio frequency channel is changed, the calibration factor at the last time is invalid, and the rate is poor. In this case, the embodiment of the present invention may trigger all the ARUs to start temperature compensation through temperature change, and adjust the Gain of the PGC (Programmed Gain Control) channel. The temperature compensation completes the automatic triggering antenna calibration, the step of manually triggering the antenna calibration due to the abnormal terminal speed is omitted, the channel estimation after the temperature compensation can be recalculated in time, the calibration factor is updated, the loss amplitude and the phase are compensated, and the terminal speed of the access base station can be restored to the normal range in time.

It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.

Device embodiment

Referring to fig. 4, a block diagram of a structure of an embodiment of the triggering apparatus for antenna calibration according to the present invention is shown, and is applied to an active antenna unit AAU, where the apparatus may specifically include:

a timing polling module 401, configured to poll the channel temperature of each radio frequency board of the AAU at a timing;

a temperature difference calculating module 402, configured to calculate a temperature difference between the current channel temperature of each radio frequency board and the channel temperature when temperature compensation was triggered last time;

a temperature compensation triggering module 403, configured to trigger all radio frequency boards of the AAU to perform a temperature compensation operation when it is determined that the temperature difference satisfies a preset condition;

a calibration triggering module 404, configured to trigger execution of an antenna calibration operation after the temperature compensation operation is completed.

Optionally, the temperature compensation triggering module 403 includes:

the maximum value determining submodule is used for determining the maximum value in the temperature difference of the temperature of each channel of each radio frequency plate;

and the condition determining submodule is used for determining that the temperature difference meets a preset condition if the maximum value is greater than a preset threshold value.

Optionally, the temperature compensation triggering module 403 is specifically configured to send a notification message carrying a preset flag to each radio frequency board of the AAU when it is determined that the temperature difference satisfies a preset condition, so as to trigger all the radio frequency boards of the AAU to perform a temperature compensation operation.

Optionally, the calibration triggering module 404 includes:

a first command sending submodule, configured to send an antenna calibration command to a programmable logic PL module in the AAU;

the second command sending submodule is used for responding to the antenna calibration command through the PL module and sending a data capture command to a Field Programmable Gate Array (FPGA) module in the AAU;

the data grabbing submodule is used for responding to the data grabbing command through the FPGA module, grabbing time domain data of a target position and sending the grabbed time domain data to the PL module;

the calibration factor sending submodule is used for carrying out antenna calibration according to the received time domain data through the PL module to obtain calibration factors of a receiving channel and a sending channel and sending the calibration factors to the FPGA module;

and the calibration submodule is used for carrying out frequency domain weighting processing on the receiving channel and the sending channel through the FPGA module according to the calibration factor.

Optionally, the apparatus further comprises:

the command receiving module is used for periodically receiving an antenna calibration command from the baseband processing unit BBU;

the periodic calibration module is used for responding to the antenna calibration command and executing antenna calibration operation;

and the result returning module is used for returning the antenna calibration result to the BBU.

Optionally, the timing polling module 401 is specifically configured to poll, in an access state and an operating state of the base station, a channel temperature of each radio frequency board of the AAU at a fixed time through an interface board in the AAU.

Optionally, the channel temperature comprises: channel temperature of a decision feedback equalizer, channel temperature of a power amplifier, channel temperature of a transceiver.

For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

An embodiment of the present disclosure also provides an electronic device, referring to fig. 5, including: a processor 501, a memory 502 and a computer program 5021 stored on the memory and executable on the processor, which when executed by the processor implements the triggering method of antenna calibration of the previous embodiments.

Embodiments of the present disclosure also provide a readable storage medium, wherein when the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to execute the triggering method of antenna calibration of the foregoing embodiments.

The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. In addition, embodiments of the present disclosure are not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the embodiments of the present disclosure as described herein, and any descriptions of specific languages are provided above to disclose the best modes of the embodiments of the present disclosure.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the present disclosure may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the disclosure, various features of the embodiments of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that is, claimed embodiments of the disclosure require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of an embodiment of this disclosure.

Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

The various component embodiments of the disclosure may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It will be appreciated by those skilled in the art that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in a sequencing device according to embodiments of the present disclosure. Embodiments of the present disclosure may also be implemented as an apparatus or device program for performing a portion or all of the methods described herein. Such programs implementing embodiments of the present disclosure may be stored on a computer readable medium or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.

It should be noted that the above-mentioned embodiments illustrate rather than limit embodiments of the disclosure, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. Embodiments of the disclosure may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The above description is only for the purpose of illustrating the preferred embodiments of the present disclosure and is not to be construed as limiting the embodiments of the present disclosure, and any modifications, equivalents, improvements and the like that are made within the spirit and principle of the embodiments of the present disclosure are intended to be included within the scope of the embodiments of the present disclosure.

The above description is only a specific implementation of the embodiments of the present disclosure, but the scope of the embodiments of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the embodiments of the present disclosure, and all the changes or substitutions should be covered by the scope of the embodiments of the present disclosure. Therefore, the protection scope of the embodiments of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A method for triggering antenna calibration, applied to an Active Antenna Unit (AAU), the method comprising:

after the temperature compensation operation is completed, triggering to perform an antenna calibration operation, the triggering to perform an antenna calibration operation comprising:

sending an antenna calibration command to a Programmable Logic (PL) module in the AAU;

the PL module responds to the antenna calibration command and sends a data capture command to a Field Programmable Gate Array (FPGA) module in the AAU;

the FPGA module responds to the data capture command, captures time domain data of a target position and sends the captured time domain data to the PL module;

the PL module carries out antenna calibration according to the received time domain data to obtain calibration factors of a receiving channel and a sending channel, and sends the calibration factors to the FPGA module;

and the FPGA module carries out frequency domain weighting processing on the receiving channel and the sending channel according to the calibration factor.

2. The method of claim 1, wherein the determining that the temperature difference satisfies a preset condition comprises:

determining the maximum value in the temperature difference of the temperature of each channel of each radio frequency plate;

and if the maximum value is larger than a preset threshold value, determining that the temperature difference meets a preset condition.

3. The method according to claim 1, wherein said triggering all radio frequency boards of the AAU to perform a temperature compensation operation in case that it is determined that the temperature difference satisfies a preset condition comprises:

and under the condition that the temperature difference is determined to meet the preset condition, sending a notification message carrying a preset mark to each radio frequency board of the AAU so as to trigger all the radio frequency boards of the AAU to execute temperature compensation operation.

4. The method of claim 1, further comprising:

periodically receiving an antenna calibration command from a baseband processing unit (BBU);

responding to the antenna calibration command, and executing antenna calibration operation;

and returning an antenna calibration result to the BBU.

5. The method of any of claims 1 to 4, wherein said periodically polling the channel temperature of each RF board of the AAU comprises:

6. The method of any of claims 1 to 4, wherein the channel temperature comprises: channel temperature of a decision feedback equalizer, channel temperature of a power amplifier, channel temperature of a transceiver.

7. An antenna calibration triggering device, applied to an Active Antenna Unit (AAU), the device comprising:

a calibration triggering module, configured to trigger execution of an antenna calibration operation after the temperature compensation operation is completed, where the calibration triggering module includes:

8. The apparatus of claim 7, wherein the temperature compensation trigger module comprises:

9. The apparatus according to claim 7, wherein the temperature compensation triggering module is specifically configured to send a notification message carrying a preset flag to each rf board of the AAU to trigger all rf boards of the AAU to perform a temperature compensation operation, if it is determined that the temperature difference satisfies a preset condition.

10. The apparatus of claim 7, further comprising:

11. The apparatus according to any of claims 7 to 10, wherein the timed polling module is specifically configured to periodically poll, through the interface board in the AAU, the channel temperature of each rf board of the AAU in the access state and the operating state of the base station.

12. The apparatus of any one of claims 7 to 10, wherein the channel temperature comprises: channel temperature of a decision feedback equalizer, channel temperature of a power amplifier, channel temperature of a transceiver.

13. An electronic device, comprising: processor, memory and computer program stored on the memory and executable on the processor, characterized in that the processor, when executing the program, implements the triggering method of antenna calibration according to any of claims 1-6.

14. A readable storage medium, characterized in that instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the triggering method of antenna calibration according to any of the method claims 1-6.