CN115065431A - Method and device for calculating reference signal received power and electronic equipment - Google Patents

Abstract

The present application provides a method, device, electronic device and storage medium for calculating the received power of a reference signal. The method includes: acquiring signal transmission parameters of a signal transmission device, and determining a fixed frequency response compensation value corresponding to the signal transmission parameters; acquiring The first device information of the communication device to be tested, the front-end frequency response compensation value of the communication device to be tested is determined according to the first device information; the first received signal is compensated according to the fixed frequency response compensation value and the front-end frequency response compensation value, and according to the compensation The received power of the reference signal of the communication device to be tested is calculated from the first received signal. Due to the high consistency of the filters inside the RF chip transceivers of different communication devices, the fixed frequency response compensation value is only changed according to the change of the signal transmission parameters, which makes it possible to face different frequency responses caused by different projects. , no need to recalculate the fixed frequency response compensation value, which greatly improves the calculation efficiency of the received power of the reference signal.

Description

Method, device and electronic device for calculating received power of reference signal

【Technical field】

The present application relates to the field of reference signal received power calculation, and in particular, to a method, apparatus, electronic device, and computer-readable storage medium for reference signal received power calculation.

【Background technique】

In a mobile communication system, in order to ensure the service quality of the mobile users and enable the mobile users to obtain a good user experience, the reselection and handover between cells must be completed quickly and accurately. If the measurement accuracy of the terminal is too low, the user's mobility experience will be affected, and the system wireless resource management will be hindered, resulting in the degradation of the system performance. If the reference signal receiving power (Reference Signal Receiving Power, RSRP) calculation accuracy is too low, the transmission quality of the entire system will be affected.

Due to the influence of the RF front-end and the internal filter of the RF chip transceiver, the frequency response at the signal sideband will be lower than that of the intermediate channel. If the synchronization signal is located at the sideband, the RSRP estimated by the synchronization signal will be lower than the actual signal strength. In order to improve the accuracy of RSRP calculation, the existing RSRP calculation method needs to scan the frequency response compensation value under all signal transmission parameters in advance to compensate the signal and then calculate it. Although the problem of frequency response difference under different signal transmission parameters is solved, due to Different front-end communication devices between different projects lead to different frequency responses of different projects. If the same set of frequency response compensation values is used, different projects cannot be covered; and if each project is pre-scanned with a set of frequency response compensation values, It is time-consuming, labor-intensive and difficult to maintain.

Therefore, how to improve the calculation efficiency of the received power of the reference signal is a technical problem to be solved in the art.

[Content of the invention]

In order to solve the problem of low calculation efficiency of the received power of the reference signal in the prior art, the present application provides a method for calculating the received power of the reference signal.

A method for calculating received power of a reference signal, comprising:

Acquire the signal transmission parameters of the signal transmission device, and determine the fixed frequency response compensation value corresponding to the signal transmission parameter; the fixed frequency response compensation value is the frequency response compensation value of the radio frequency chip;

Obtain the first device information of the communication device to be tested, and determine the front-end frequency response compensation value of the communication device to be tested according to the first device information; the front-end frequency response compensation value is the frequency response compensation value of the radio frequency front end ;

Obtain the first received signal of the communication device under test, compensate the first received signal according to the fixed frequency response compensation value and the front-end frequency response compensation value, and calculate the received signal according to the compensated first received signal. The received power of the reference signal of the communication device under test.

Preferably, before acquiring the signal transmission parameters of the signal transmission device and determining the fixed frequency response compensation value corresponding to the signal transmission parameters, the method further includes:

Acquire at least one preset signal transmission parameter, and for each signal transmission parameter in the preset at least one signal transmission parameter, send a signal test instruction including the signal transmission parameter to the signal transmission device, and the signal test The instruction is used to instruct the signal transmitting device to transmit the test signal by using the signal transmitting parameter;

acquiring second device information of the preset communication device, and determining a front-end frequency response compensation value of the preset communication device according to the second device information;

Acquire the second received signal of the preset communication device, calculate the total frequency response compensation value corresponding to the signal transmission parameter according to the second received signal, and the second received signal is for the preset communication device to receive the test The received signal obtained by the signal;

The fixed frequency response compensation value corresponding to the signal transmission parameter is determined according to the total frequency response compensation value corresponding to the signal transmission parameter and the front-end frequency response compensation value of the preset communication device.

Preferably, calculating the total frequency response compensation value corresponding to the signal transmission parameter according to the second received signal includes:

determining a first signal strength value of the second received signal according to the second received signal;

Send the signal transmission instruction of the single-tone test signal to the signal transmission device; the signal transmission instruction of the single-tone test signal is used to instruct the signal transmission device to transmit the single-tone signal of the preset frequency under the signal transmission parameter;

Acquire a third received signal of the preset communication device, and determine a second signal strength value of the third received signal according to the third received signal, where the third received signal is received by the preset communication device. The received signal obtained from the single tone signal;

Calculate the difference between the first signal strength value and the second signal strength value to obtain a total frequency response compensation value corresponding to the signal transmission parameter.

Preferably, the method further includes:

A modification instruction is acquired, and the modification instruction is sent to the signal transmitting device, where the modification instruction is used to modify the preset frequency of the single tone signal.

Preferably, after determining the fixed frequency response compensation value corresponding to the signal transmission parameter, the method further includes:

Save the correspondence between each preset signal transmission parameter and the corresponding fixed frequency response compensation value;

The determining of the fixed frequency response compensation value corresponding to the signal transmission parameter corresponds to:

The corresponding relationship is acquired, and a fixed frequency response compensation value corresponding to the signal transmission parameter is determined according to the signal transmission parameter and the corresponding relationship.

Preferably, the signal transmission parameters include at least one of a signal gain control word, a signal transmission channel, a signal transmission frequency band, a synchronization signal position, a signal transmission bandwidth, and a signal transmission downlink path.

Preferably, the device information includes a calibration gain table;

The determining the front-end frequency response compensation value of the communication device under test according to the device information includes:

determining the gain of the communication device under test under each channel according to the calibration gain table;

Obtain a preset gain, calculate the difference between the gain under each channel and the preset gain, and determine the difference between the gain under each channel and the preset gain as the front-end frequency response compensation of the communication device to be tested value.

An apparatus for calculating received power of a reference signal, comprising:

a first acquisition module, configured to acquire the signal transmission parameters of the signal transmission device, and determine the fixed frequency response compensation value corresponding to the signal transmission parameter; the fixed frequency response compensation value is the frequency response compensation value of the radio frequency chip;

The second acquiring module is configured to acquire the first device information of the communication device to be tested, and determine the front-end frequency response compensation value of the communication device to be tested according to the first device information; the front-end frequency response compensation value is The frequency response compensation value of the RF front end;

The third acquiring module is configured to acquire the first received signal of the communication device under test, compensate the first received signal according to the fixed frequency response compensation value and the front-end frequency response compensation value, and compensate the first received signal according to the compensation value after compensation. The received power of the reference signal of the communication device under test is calculated from the first received signal.

An electronic device comprising:

A processor and a memory for storing at least one instruction that, when loaded and executed by the processor, implements the method for calculating the received power of a reference signal as described above.

A computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the above-mentioned method for calculating the received power of a reference signal.

In the method for calculating the received power of a reference signal provided by the embodiment of the present application, the fixed frequency response compensation value corresponding to the signal transmission parameter of the signal transmitting device is predetermined, and the fixed frequency response compensation value is the frequency response compensation value of the radio frequency chip. The filter inside the RF chip transceiver of the device has a high consistency, so that the fixed frequency response compensation value does not change according to the change of the front-end equipment, but only changes according to the change of the signal transmission parameters, which makes the When the project causes the frequency response to be different, it is not necessary to recalculate the fixed frequency response compensation value under all signal transmission parameters. It only needs to be based on the front-end frequency response compensation value of the communication device to be tested and the fixed frequency response compensation value corresponding to the current signal transmission parameters. The received signal is compensated, and finally the received power of the reference signal of the communication device under test is calculated according to the compensated received signal, which greatly improves the calculation efficiency of the received power of the reference signal.

【Description of drawings】

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a frequency response curve diagram of four downlink paths under a kind of N41 frequency band provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a reference signal received power calculation system provided by an embodiment of the present application;

3 is a flowchart of a method for calculating received power of a reference signal provided by an embodiment of the present application;

4 is a schematic diagram of splitting a frequency response compensation value provided by an embodiment of the present application;

5 is a flowchart of another method for calculating received power of a reference signal provided by an embodiment of the present application;

6 is a frequency response curve diagram of an internal filter of different radio frequency chip transceivers provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of an apparatus for calculating received power of a reference signal according to an embodiment of the present application.

【Detailed ways】

In order to better understand the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be clear that the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the embodiments of this application and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

It should be understood that the term "and/or" used in this document is only an association relationship to describe the associated objects, indicating that there may be three kinds of relationships, for example, A and/or B, which may indicate that A exists alone, and A and B exist at the same time. B, there are three cases of B alone. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

For ease of understanding, terms involved in the embodiments of the present application are introduced here in the embodiments of the present application:

1) Frequency response: The frequency response is used in electronics to describe the difference in the processing ability of an instrument for signals of different frequencies. The frequency response curve refers to the change curve of gain with frequency. The ideal frequency response curve should be flat. Straight, the signal passes through without distortion.

2), 5GNR: The 5th Generation Mobile Communication Technology (5G) New Radio (NR) is a new air interface design based on the Orthogonal Frequency Division Multiplexing (OFDM) technology. 5G standard.

3), the received power of the reference signal: the received power of the reference signal is the average value of the signal power received on all the resource elements that carry the reference signal in a certain symbol, that is, the subcarrier power. For a mobile communication network, an OFDM The subcarrier bandwidth is fixed, that is, as long as the carrier bandwidth is determined, the number of subcarriers can be determined, and then the RSRP power can be calculated.

Referring to FIG. 1 , a frequency response curve diagram of four downlink paths in an N41 frequency band provided by an embodiment of the present application.

Due to the physical characteristics of the frequency response, the frequency response at the signal sideband will be lower than the intermediate channel amplitude. Since the position of the NR Synchronization Signal Block (SSB) is not fixed, if the SSB position is at the sideband, then the SSB The estimated RSRP will be lower than the actual signal strength. Here, the NR cell is 100MHz as an example. The NR downlink needs to support 100M signal bandwidth. There are 273 Resource Block (RB) signals in the 100M signal, and for the SSB with the subcarrier bandwidth of 30KHz, there are 20 of them. The RB signal, that is, the SSB signal, has a total bandwidth of 7.2MHz, and the measurement result of the 7.2MHz bandwidth may not accurately reflect the overall situation of the 100MHz bandwidth.

Therefore, in order to improve the accuracy of RSRP calculation, the existing RSRP calculation method needs to use the frequency response compensation value to compensate the signal before calculation. As can be seen from Figure 1, under different signal transmission parameters, the frequency response is different, so in order to It is convenient for RSRP calculation. The existing solution is to scan the frequency response values under all signal transmission parameters in advance, then determine the corresponding frequency response compensation value, and then use the compensation value to compensate the signal before calculating RSRP, although different signal transmission parameters are solved. However, due to the different front-end communication devices between different projects, the frequency responses of different projects are different. If the same set of frequency response compensation values is used, different projects cannot be covered; Scanning a set of frequency response compensation values in advance is time-consuming, labor-intensive and difficult to maintain. Therefore, the present application provides a method for calculating the received power of a reference signal to solve the above problem.

For ease of understanding, the items mentioned here can be understood as the model of the communication device to be tested, where the same item refers to the same brand and model of the communication device to be tested, and different items refer to the different brands or brands of the communication device to be tested. Same but different model.

Example 1

Please refer to FIG. 2 , which is a schematic diagram of a reference signal received power calculation system provided by an embodiment of the present application. The system includes a signal transmission device 10 , a communication device to be tested 20 , and a reference signal received power calculation device 30 , wherein:

The signal transmitting device 10 is used for transmitting a corresponding signal according to the signal transmitting parameter, so that the communication device 20 to be tested receives the corresponding received signal;

The communication device 20 to be tested is used for receiving the signal transmitted by the signal transmitting device 10;

The reference signal received power calculation device 30 is used to obtain the signal transmission parameters of the signal transmission device 10, and determine the fixed frequency response compensation value corresponding to the signal transmission parameters; Determine the front-end frequency response compensation value of the communication device 20 to be tested; obtain the first received signal of the communication device 20 to be tested, compensate the first received signal according to the fixed frequency response compensation value and the front-end frequency response compensation value, and compensate the first received signal according to the compensated The first received signal calculates the received power of the reference signal of the communication device 20 under test.

In a specific embodiment, before acquiring the current signal transmission parameters of the signal transmission device 10, the reference signal received power calculation device 30 may also send a signal transmission instruction including the specified signal transmission parameters to the signal transmission device 10, and the signal transmission device 10 according to The specified signal transmission parameter transmits the corresponding signal;

In a specific embodiment, before acquiring the signal transmission parameters of the signal transmission device 10, the reference signal received power calculation device 30 may also send a signal transmission instruction including all the signal transmission parameters and the signal transmission strategy to the signal transmission device 10, so that the The signal transmission device 10 can select corresponding signal transmission parameters according to the signal transmission strategy, and transmit corresponding signals according to the selected signal transmission parameters;

In a specific embodiment, the signal transmitting device may specifically be a sine signal generator, a low frequency signal generator, a high frequency signal generator, a microwave signal generator, a frequency synthesis signal generator, a function signal generator, a pulse signal generator at least one of a generator and a random signal generator;

It should be noted that the present application does not specifically limit the type of the signal transmitting device 10 .

Embodiment 2

Please refer to FIG. 3 , which is a flowchart of a method for calculating the received power of a reference signal provided by an embodiment of the present application, and the method is applied to the apparatus 30 for calculating the received power of a reference signal of the system for calculating the received power of a reference signal shown in FIG. 2 , including the following steps:

Step S01: Acquire signal transmission parameters of the signal transmission device, and determine a fixed frequency response compensation value corresponding to the signal transmission parameters.

Please refer to FIG. 4 , which is a schematic diagram of a frequency response compensation value split provided by an embodiment of the present application. The present application analyzes the reasons for the frequency response difference between different items under the same signal transmission parameters, and determines the frequency response difference. The reason is that the radio frequency of the front-end communication device between different projects is different. The radio frequency is composed of the radio frequency front end and the radio frequency chip. Since the filters inside the radio frequency chip transceivers of different communication devices have high consistency, that is to say, the reason for the difference in frequency response between different projects under the same signal transmission parameters is that Due to the difference of the RF front-end, the present application splits the frequency response compensation value into a front-end frequency response compensation value and a fixed frequency response compensation value, wherein:

The front-end frequency response compensation value refers to the corresponding frequency response compensation value under the frequency response difference caused by the difference of the RF front-end device, which is determined by the inherent properties of each front-end communication device;

The fixed frequency response compensation value is the frequency response compensation value of the radio frequency chip. Since the filters inside the radio frequency chip transceiver of different communication devices have high consistency, the fixed frequency response compensation value will not change due to different front-end communication devices. , but only according to the change of the signal transmission parameters.

That is to say, the difference in the frequency response compensation value between different projects can be understood as the front-end frequency response compensation value of the front-end communication device of different projects is different, so it is only necessary to determine the front-end frequency response compensation value of a certain project, and the front-end frequency response compensation value of a certain project. The fixed frequency response compensation value corresponding to the condition can determine the frequency response compensation value of the project under the signal transmission parameters, and then use the frequency response compensation value to compensate the received signal, and finally calculate the received power of the reference signal.

Therefore, the present application obtains the current signal transmission parameters of the signal transmission device, and determines the fixed frequency response compensation value corresponding to the signal transmission parameter, and then only needs to determine the front-end frequency response compensation value of the communication device to be tested to compensate the received signal, and Calculate the reference signal received power.

In a specific embodiment, the reference signal received power calculation apparatus sends a first acquisition instruction to the signal transmission apparatus, and when the signal transmission apparatus receives the first acquisition instruction, it determines the signal transmission parameters used for transmitting the signal at this time, and uses the The signal transmission parameter is fed back to the reference signal received power calculation device, and the reference signal received power calculation device determines the fixed frequency response compensation value corresponding to the signal transmission parameter.

In a specific embodiment, the signal transmission parameters include at least one of a signal gain control word, a signal transmission channel, a signal transmission frequency band, a synchronization signal position, a signal transmission bandwidth, and a signal transmission downlink path.

In a specific embodiment, the fixed frequency response compensation value corresponding to the signal transmission parameter may be determined according to a preset corresponding relationship, and the preset corresponding relationship may specifically be a corresponding relationship between the signal transmission parameter and the fixed frequency response compensation value. The table can also be other forms of data structures used to represent the corresponding relationship.

In a specific embodiment, the corresponding relationship can be obtained by receiving user input, or by connecting to a preset server, or by downloading from a preset network disk location, which is not specifically limited in this application.

Step S02: Acquire first device information of the communication device to be tested, and determine a front-end frequency response compensation value of the communication device to be tested according to the first device information.

In a specific embodiment, the reference signal received power calculation apparatus sends a second acquisition instruction to the communication apparatus under test, and when the communication apparatus under test receives the second acquisition instruction, it feeds back the first device information of the communication apparatus under test to the reference signal A received power calculation device, so that the reference signal received power calculation device determines a front-end frequency response compensation value of the communication device to be tested according to the first device information.

In a specific embodiment, the corresponding relationship between the device information and the front-end frequency response compensation value may be obtained in advance from a preset position, and then the front-end frequency response compensation value corresponding to the device information of the communication device to be tested is determined according to the corresponding relationship.

In a specific embodiment, the device information is the calibration gain table of the communication device to be tested. On this basis, the front-end frequency response compensation value of the communication device to be tested is determined according to the device information, which can be specifically:

Determine the gain of the communication device under test under each channel according to the calibration gain table;

Calculate the difference between each gain and the preset gain, and determine the front-end frequency response compensation value of the communication device under test according to each difference.

The calibration gain table mentioned here is the calibration gain table generated when the communication device performs automatic gain control (AGC) calibration at the factory. The generated calibration gain table will be stored in the communication device. The purpose of AGC calibration is to The size of the signal at the location of the device is basically the same as the size of the signal before it finally enters the demodulation circuit. The calibration gain table generated in the AGC calibration process can control the AGC circuit to use a specific amplification factor to amplify the Received Signal Strength Indication (RSSI) to the extent that the demodulation threshold is met. Therefore, it can be determined according to the calibration gain table. The gain of the communication device under test under each channel.

The preset gain mentioned here may specifically be the maximum value of the gain of the communication device under test under each channel, so the present application can determine the gain of the communication device under test under each channel according to the obtained calibration gain table, and calculate The obtained difference between each gain and the preset gain is the frequency response difference value of each channel relative to the optimal channel, and then it is determined that the front-end frequency response compensation value used for frequency response compensation is the same as the frequency response difference value.

Step S03, obtaining a first received signal of the communication device under test, compensating the first received signal according to the fixed frequency response compensation value and the front-end frequency response compensation value, and according to the compensated first received signal The signal calculates the received power of the reference signal of the communication device under test.

In a specific embodiment, the reference signal received power calculation apparatus sends a third acquisition instruction to the communication apparatus under test, and when the communication apparatus under test receives the third acquisition instruction, it feeds back the first received signal of the communication apparatus under test to the reference signal The received power calculation device, the first received signal is the received signal obtained by the communication device to be tested receiving the signal transmitted by the signal transmission device under the signal transmission parameter. The reference signal received power calculation device compensates the first received signal according to the fixed frequency response compensation value and the front-end frequency response compensation value, and calculates the reference signal received power of the communication device under test according to the compensated first received signal.

In a specific embodiment, the fixed frequency response compensation value and the front-end frequency response compensation value may be summed to obtain a total frequency response compensation value, and then the received signal is compensated according to the total frequency response compensation value.

In a specific embodiment, the fixed frequency response compensation value and the front-end frequency response compensation value may also be used to compensate the received signal in sequence, and the present application does not specifically limit the order of compensation for the two.

In the method for calculating the received power of a reference signal provided by the embodiment of the present application, the fixed frequency response compensation value corresponding to the current signal transmission parameter is determined in advance, and the fixed frequency response compensation value is the frequency response compensation value of the radio frequency chip. The filter inside the chip transceiver has a high consistency, so that the fixed frequency response compensation value only changes according to the change of the signal transmission parameters, so that in the face of different frequency responses caused by different projects, it is not necessary to recalculate all the The fixed frequency response compensation value under the signal transmission parameters only needs to compensate the received signal according to the front-end frequency response compensation value of the communication device to be tested and the fixed frequency response compensation value corresponding to the current signal transmission parameters, and finally calculate the received signal according to the compensation. The received power of the reference signal of the communication device to be tested is sufficient, which greatly improves the calculation efficiency of the received power of the reference signal.

Embodiment 3

Please refer to FIG. 5 , which is a flowchart of another method for calculating the received power of a reference signal provided by an embodiment of the present application. The method is applied to the apparatus 30 for calculating the received power of a reference signal of the system for calculating the received power of a reference signal shown in FIG. 2 . , the reference signal received power calculation system may further include a preset communication device.

The method includes the following steps:

Step S11: Acquire at least one preset signal transmission parameter, and for each signal transmission parameter in the preset at least one signal transmission parameter, send a signal test instruction including the signal transmission parameter to the signal transmission device.

In a specific embodiment, the acquisition of the preset at least one signal transmission parameter mentioned here may specifically be to acquire all the signal transmission parameters, and all the signal transmission parameters mentioned here are all transmission conditions of the signal transmission device All corresponding signal transmission parameters. It should be noted that the different signal transmission parameters include different types of signal transmission parameters and/or different values of the signal transmission parameters.

In a specific embodiment, the signal transmission parameters can be obtained by receiving user input, or by connecting to a preset server, or by downloading from a preset network disk location, which is not specifically limited in this application. .

The signal test instruction mentioned here is used to instruct the signal transmitter to transmit a test signal by using the signal transmitter parameters. In a specific embodiment, when the signal transmitter receives the signal test instruction, the signal corresponding to the signal test instruction is determined first. transmit parameters, and then transmit a corresponding test signal according to the signal transmission parameters, so that the preset communication device can receive the test signal.

Step S12: Acquire second device information of the preset communication device, and determine a front-end frequency response compensation value of the preset communication device according to the second device information.

In a specific embodiment, the reference signal received power calculation apparatus sends a fourth acquisition instruction to the preset communication apparatus, and when the preset communication apparatus receives the fourth acquisition instruction, the preset communication apparatus feeds back the second device information of the preset communication apparatus to the reference signal A received power calculation device, so that the reference signal received power calculation device determines the front-end frequency response compensation value of the preset communication device according to the second device information.

Step S13: Acquire a second received signal of the preset communication device, and calculate a total frequency response compensation value corresponding to the signal transmission parameter according to the second received signal.

In a specific embodiment, the reference signal received power calculation device sends a fifth acquisition instruction to the communication device under test, and it is preset that when the communication device receives the fifth acquisition instruction, the second received signal of the communication device under test is fed back to the reference signal In the received power calculation device, the second received signal is the received signal obtained by the preset communication device receiving the test signal transmitted by the signal transmitting device under the signal transmitting parameter. The reference signal received power calculation device calculates the total frequency response compensation value corresponding to the signal transmission parameter according to the second received signal.

Step S14: Determine a fixed frequency response compensation value corresponding to the signal transmission parameter according to the total frequency response compensation value corresponding to the signal transmission parameter and the front-end frequency response compensation value of the preset communication device.

It can be seen from the content in the second embodiment that the total frequency response compensation value is composed of the front-end frequency response compensation value and the fixed frequency response compensation value. In this embodiment, after the total frequency response compensation value and the front-end frequency response compensation value are determined, the It can be determined that the fixed frequency response compensation value corresponding to the signal transmission parameter is the difference between the total frequency response compensation value and the front-end frequency response compensation value.

The purpose of the embodiment of the present application is to determine the fixed frequency response compensation value corresponding to each signal transmission parameter. Therefore, the present application calculates the total frequency response compensation value according to the received signal in advance, and then calculates the total frequency response compensation value and the front-end frequency response compensation value. Since the total frequency response compensation value is composed of the front-end frequency response compensation value and the fixed frequency response compensation value, the difference obtained is the corresponding fixed frequency response compensation value.

In a specific embodiment, in order to improve the calculation accuracy of the total frequency response compensation value, the reference signal can be simulated by externally filling a single tone signal for calculation, that is, the calculation method mentioned in step S14 is based on the received signal corresponding to the signal transmission parameter. The total frequency response compensation value corresponding to the signal transmission parameters can be realized by performing the following steps:

Step S141: Determine a first signal strength value of the second received signal according to the second received signal.

Step S142: Send a signal transmitting instruction of the single-tone test signal to the signal transmitting apparatus.

The signal transmitting instruction of the single-tone test signal mentioned here is used to instruct the signal transmitting device to transmit the single-tone signal of the preset frequency under this signal transmitting parameter;

In a specific embodiment, after the reference signal received power calculation device sends a signal transmission command of the single-tone test signal to the signal transmission device, the signal transmission device determines the corresponding preset frequency according to the signal transmission command, and the signal transmission parameter The single-tone signal of the preset frequency is transmitted down, so that the preset communication device receives the single-tone signal.

In a specific embodiment, the apparatus for calculating the received power of the reference signal may also send the received modification instruction to the signal transmitting apparatus, where the modification instruction is used to modify the preset frequency of the single tone signal, and the modification instruction may be: The input input by the user may also be issued by the system, and this application does not specifically limit the source of the modification instruction.

Step S143: Acquire a third received signal of the preset communication device, and determine a second signal strength value of the third received signal according to the third received signal.

The third received signal mentioned here is the received signal obtained by the preset communication device receiving the single tone signal;

In a specific embodiment, the reference signal received power calculation device sends a sixth acquisition instruction to the communication device under test, and it is preset that when the communication device receives the sixth acquisition instruction, the third received signal of the communication device under test is fed back to the reference signal The received power calculation means, the reference signal received power calculation means determines the second signal strength of the third received signal according to the third received signal.

Step S144: Calculate the difference between the first signal strength value and the second signal strength value to obtain a total frequency response compensation value corresponding to the signal transmission parameter.

In this step, the difference between the first signal strength value and the second signal strength value indicates the preset frequency response gap between the second received signal received by the communication device and the reference signal. The compensated total frequency response compensation value is the frequency response gap, so the present application obtains the total frequency response compensation value corresponding to the signal transmission parameter according to the difference between the first signal strength value and the second signal strength value.

Step S01: Acquire signal transmission parameters of the signal transmission device, and determine a fixed frequency response compensation value corresponding to the signal transmission parameters.

On the basis of the above embodiment, in a specific embodiment, after obtaining the fixed frequency response compensation value corresponding to each of the signal transmission parameters, in order to save the corresponding relationship between the signal transmission parameters and the fixed frequency response compensation value, You can also perform the following steps:

Save the correspondence between each preset signal transmission parameter and the corresponding fixed frequency response compensation value;

On this basis, the determination of the fixed frequency response compensation value corresponding to the signal transmission parameter mentioned in step S01 may specifically be:

The corresponding relationship is acquired, and a fixed frequency response compensation value corresponding to the signal transmission parameter is determined according to the signal transmission parameter and the corresponding relationship.

Step S02: Acquire first device information of the communication device to be tested, and determine a front-end frequency response compensation value of the communication device to be tested according to the first device information.

Step S03, obtaining a first received signal of the communication device under test, compensating the first received signal according to the fixed frequency response compensation value and the front-end frequency response compensation value, and according to the compensated first received signal The signal calculates the received power of the reference signal of the communication device under test.

It should be noted that the technical solutions and beneficial effects of steps S01 to S03 in this embodiment are the same as those of steps S01 to S03 in the second embodiment, which will not be repeated here.

Embodiment 4

In this embodiment of the present application, a reference signal is simulated by externally filling a single-tone signal, and the signal frequency of the single-tone signal is the downlink local oscillator frequency plus a frequency offset of 1Mhz; in order to simulate the difference between different SSB positions and calibration results, for example, 100M bandwidth, sub-frequency The carrier spacing is SCS=30K, the signal source is set to RB=13 REs, and the number=20. The RB frequency offset is traversed, and the difference between the signal strength of different SSB positions and the AGC calibration gain is calculated according to a certain interval, and the difference is the total frequency response compensation value. Each frequency band scans the high, middle and low channels, and selects compensation parameters for all channels in the frequency band. The latitudes that need to be covered include: different gain words, different channels, different frequency bands, different SSB locations, different bandwidths, and different downlink paths.

The specific process includes:

1) Set the signal transmitting device to transmit the modulated signal, the bandwidth is 20RB, the signal strength can make the device work in the linear region, keep the signal strength unchanged, and pour out through the antenna port;

2) Select a frequency band, a gain word, and a channel, and obtain the corresponding RSSI value by traversing the positions of different RBs (20RB intervals each time);

3) set the signal transmitting device to transmit a single tone signal, the frequency is set to be 1MHz to the right of the local oscillator, the signal strength is kept consistent with the step 1), and the RSSI value of the single tone signal is obtained;

4) make the difference between the RSSI value obtained in step 1) and the RSSI value obtained in step 3), then the compensation value of RSRP is obtained;

5) Repeat step 1) to step 4) for different frequency bands, different downlink paths, different channels, and different gain words, and obtain the data in the following table:

The data in the table is the total frequency response compensation value. The total frequency response compensation value can be divided into front-end frequency response compensation value and fixed frequency response compensation value. The front-end frequency response compensation value can be obtained by AGC calibration. Subtract the total frequency response compensation value The front-end frequency response compensation value can be used to obtain a fixed frequency response compensation value. As shown in FIG. 6 , the frequency response curves of the internal filters of different radio frequency chip transceivers provided in this embodiment of the application show that for the radio frequency chip transceiver The internal filter has high consistency, and the difference between the frequency response curves of the internal filters of different RF chip transceivers is negligible, so it is written to death by software after obtaining the fixed frequency response compensation value.

For different projects using RF chip transceivers, the total frequency response compensation value is obtained from the fixed frequency response compensation value written in the software and the front-end frequency response compensation value obtained by AGC calibration.

Compared with the algorithm in the prior art, the total frequency response compensation value needs to be stored in the memory by means of quadratic function fitting, which leads to a large increase in the memory space overhead. The embodiment of the present application does not need to store the frequency response compensation value in the memory. Instead, it is directly written to death by software, avoiding the increase of memory space overhead. The embodiment of the present application can achieve a precise compensation effect, and the actual measurement results show that the error range of +/-0.5db can be satisfied.

Embodiment 5

Please refer to FIG. 7 , which is a schematic structural diagram of an apparatus for calculating received power of a reference signal provided by an embodiment of the present application. The apparatus includes:

The first acquisition module 301 is configured to acquire the signal transmission parameters of the signal transmission device, and determine the fixed frequency response compensation value corresponding to the signal transmission parameter; the fixed frequency response compensation value is the frequency response compensation value of the radio frequency chip;

The second acquiring module 302 is configured to acquire first device information of the communication device under test, and determine a front-end frequency response compensation value of the communication device under test according to the first device information; the front-end frequency response compensation value is the frequency response compensation value of the RF front-end;

The third obtaining module 303 is configured to obtain the first received signal of the communication device under test, compensate the first received signal according to the fixed frequency response compensation value and the front-end frequency response compensation value, and compensate the first received signal according to the compensation value. The received power of the reference signal of the communication device under test is calculated from the last received signal.

On the basis of the foregoing embodiment, in a specific embodiment, the apparatus may further include:

a fourth acquisition module, configured to acquire at least one preset signal transmission parameter, and for each signal transmission parameter in the preset at least one signal transmission parameter, send a signal including the signal transmission parameter to the signal transmission device a test instruction, the signal test instruction is used to instruct the signal transmitting device to transmit a test signal by using the signal transmitting parameter;

a fifth acquisition module, configured to acquire second device information of the preset communication device, and determine a front-end frequency response compensation value of the preset communication device according to the second device information;

The sixth acquisition module is used to acquire the second received signal of the preset communication device, and calculate the total frequency response compensation value corresponding to the signal transmission parameter according to the second received signal, and the second received signal is the preset Suppose the communication device receives the received signal obtained by the test signal;

The first determination module is configured to determine the fixed frequency response compensation value corresponding to the signal transmission parameter according to the total frequency response compensation value corresponding to the signal transmission parameter and the front-end frequency response compensation value of the preset communication device.

On the basis of the foregoing embodiment, in a specific embodiment, the sixth obtaining module may include:

a first determining unit, configured to determine a first signal strength value of the second received signal according to the second received signal;

The first sending unit is used to send the signal transmission instruction of the single-tone test signal to the signal transmission device; the signal transmission instruction of the single-tone test signal is used to instruct the signal transmission device to transmit a preset under the signal transmission parameters frequency of a single tone signal;

a second sending unit, configured to send a third acquisition instruction to the preset communication device, where the third acquisition instruction is used to acquire a single-tone received signal received by the preset communication device under the signal transmission parameters;

a first acquiring unit, configured to acquire a third received signal of the preset communication device, and determine a second signal strength value of the third received signal according to the third received signal, where the third received signal is the The preset communication device receives the received signal obtained by the single tone signal;

The first calculation unit is configured to calculate the difference between the first signal strength value and the second signal strength value to obtain the total frequency response compensation value corresponding to the signal transmission parameter.

On the basis of the foregoing embodiment, in a specific embodiment, the second computing module may further include:

The third sending unit is configured to acquire a modification instruction and send the modification instruction to the signal transmitting device, where the modification instruction is used to modify the preset frequency of the single tone signal.

On the basis of the foregoing embodiment, in a specific embodiment, the apparatus may further include:

a saving module for saving the correspondence between each preset signal transmission parameter and the corresponding fixed frequency response compensation value;

The first obtaining module 301 may correspondingly include:

The second acquiring unit is configured to acquire the corresponding relationship, and determine the fixed frequency response compensation value corresponding to the signal transmission parameter according to the signal transmission parameter and the corresponding relationship.

On the basis of the above embodiment, in a specific embodiment, the signal transmission parameters include at least one of a signal gain control word, a signal transmission channel, a signal transmission frequency band, a synchronization signal position, a signal transmission bandwidth, and a signal transmission downlink path. item.

Based on the above embodiment, in a specific embodiment, the device information includes a calibration gain table, and the second obtaining module 302 includes:

a second determining unit, configured to determine the gain of the communication device under test under each channel according to the calibration gain table;

The third obtaining unit is configured to obtain the preset gain, calculate the difference between the gain under each channel and the preset gain, and determine the difference between the gain under each channel and the preset gain as the to-be-measured The front-end frequency response compensation value of the communication device.

Embodiment 6

This embodiment provides an electronic device, including a processor and a memory. The memory is used to store at least one instruction. When the instruction is loaded and executed by the processor, the above-mentioned method for calculating the received power of a reference signal is implemented. The execution mode and beneficial effects are similar. , will not be repeated here.

The embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned method for calculating the received power of a reference signal is implemented. The execution mode and beneficial effect are similar. I won't go into details here.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the present application. within the scope of protection.

Claims (10)

1. A method for reference signal received power calculation, comprising:

acquiring signal emission parameters of a signal emission device, and determining fixed frequency response compensation values corresponding to the signal emission parameters; the fixed frequency response compensation value is the frequency response compensation value of the radio frequency chip;

acquiring first equipment information of the communication device to be tested, and determining a front-end frequency response compensation value of the communication device to be tested according to the first equipment information; the front-end frequency response compensation value is a frequency response compensation value of a radio frequency front end;

and acquiring a first receiving signal of the communication device to be detected, compensating the first receiving signal according to the fixed frequency response compensation value and the front-end frequency response compensation value, and calculating the reference signal receiving power of the communication device to be detected according to the compensated first receiving signal.

2. The method of claim 1, wherein before obtaining signal transmission parameters of a signal transmission device and determining the fixed frequency response compensation value corresponding to the signal transmission parameters, the method further comprises:

acquiring at least one preset signal transmission parameter, and sending a signal test instruction containing the signal transmission parameter to the signal transmission device aiming at each signal transmission parameter in the at least one preset signal transmission parameter, wherein the signal test instruction is used for instructing the signal transmission device to transmit a test signal by using the signal transmission parameter;

acquiring second equipment information of the preset communication device, and determining a front-end frequency response compensation value of the preset communication device according to the second equipment information;

acquiring a second receiving signal of the preset communication device, and calculating a total frequency response compensation value corresponding to the signal transmitting parameter according to the second receiving signal, wherein the second receiving signal is a receiving signal obtained by the preset communication device receiving the test signal;

and determining a fixed frequency response compensation value corresponding to the signal transmission parameter according to the total frequency response compensation value corresponding to the signal transmission parameter and the front end frequency response compensation value of the preset communication device.

3. The method of claim 2, wherein said calculating the total frequency response compensation value corresponding to the signal transmission parameter according to the second received signal comprises:

determining a first signal strength value of the second received signal according to the second received signal;

sending a signal transmitting instruction of a single tone test signal to the signal transmitting device; the signal emission instruction of the single-tone test signal is used for instructing the signal emission device to emit a single-tone signal with a preset frequency under the signal emission parameter;

acquiring a third receiving signal of the preset communication device, and determining a second signal strength value of the third receiving signal according to the third receiving signal, wherein the third receiving signal is a receiving signal obtained by the preset communication device receiving the single tone signal;

and calculating the difference value between the first signal strength value and the second signal strength value to obtain a total frequency response compensation value corresponding to the signal emission parameter.

4. The method of claim 3, further comprising:

and acquiring a modification instruction, and sending the modification instruction to the signal transmitting device, wherein the modification instruction is used for modifying the preset frequency of the single tone signal.

5. The method of claim 2, wherein after determining the fixed frequency response compensation value for the signal transmission parameter, the method further comprises:

storing the corresponding relation between each preset signal emission parameter and the corresponding fixed frequency response compensation value;

the determining of the fixed frequency response compensation value corresponding to the signal transmission parameter correspondingly includes:

and acquiring the corresponding relation, and determining a fixed frequency response compensation value corresponding to the signal transmission parameter according to the signal transmission parameter and the corresponding relation.

6. The method of claim 1, wherein the signal transmission parameters comprise at least one of a signal gain control word, a signal transmission channel, a signal transmission frequency band, a synchronization signal position, a signal transmission bandwidth, and a signal transmission downlink.

7. The method according to any one of claims 1-6, wherein the device information comprises a calibration gain table;

determining a front-end frequency response compensation value of the communication device to be tested according to the equipment information includes:

determining the gain of the communication device to be tested under each channel according to the calibration gain table;

and acquiring a preset gain, calculating a difference value between the gain under each channel and the preset gain, and determining the difference value between the gain under each channel and the preset gain as a front-end frequency response compensation value of the communication device to be tested.

8. An apparatus for reference signal received power calculation, comprising:

the first acquisition module is used for acquiring signal transmission parameters of a signal transmission device and determining fixed frequency response compensation values corresponding to the signal transmission parameters; the fixed frequency response compensation value is a frequency response compensation value of the radio frequency chip;

the second acquisition module is used for acquiring first equipment information of the communication device to be detected and determining a front-end frequency response compensation value of the communication device to be detected according to the first equipment information; the front-end frequency response compensation value is a frequency response compensation value of a radio frequency front end;

and the third acquisition module is used for acquiring a first receiving signal of the communication device to be detected, compensating the first receiving signal according to the fixed frequency response compensation value and the front-end frequency response compensation value, and calculating the reference signal receiving power of the communication device to be detected according to the compensated first receiving signal.

9. An electronic device, comprising:

a processor and a memory for storing at least one instruction which is loaded into and executed by the processor to implement the method of reference signal received power calculation as claimed in any of claims 1 to 7.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of reference signal received power calculation according to any one of claims 1 to 7.

Images