CN115065431A - Method and device for calculating reference signal received power and electronic equipment - Google Patents
Method and device for calculating reference signal received power and electronic equipment Download PDFInfo
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Abstract
The application provides a method, a device, an electronic device and a storage medium for calculating reference signal received power, wherein the method comprises the following steps: acquiring signal emission parameters of a signal emission device, and determining fixed frequency response compensation values corresponding to the signal emission parameters; acquiring first equipment information of a 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; and 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. Because the filters in the radio frequency chip transceivers of different communication devices have high consistency, the fixed frequency response compensation value is only changed according to the change of the signal transmission parameter, and further, when the situation that the frequency responses are different due to different projects is faced, the fixed frequency response compensation value does not need to be recalculated, and the calculation efficiency of the reference signal receiving power is greatly improved.
Description
[ technical field ] A method for producing a semiconductor device
The present application relates to the field of reference signal received power calculation, and in particular, to a method, an apparatus, an electronic device, and a computer-readable storage medium for reference signal received power calculation.
[ background of the invention ]
In a mobile communication system, in order to ensure the quality of service of a mobile user and to enable the mobile user to obtain good user experience, reselection and handover between cells must be completed quickly and accurately. If the terminal measurement accuracy is too low, the mobility experience of a user is influenced, the wireless resource management of the system is also hindered, and the performance of the system is reduced. If the Reference Signal Receiving Power (RSRP) is calculated with too low precision, the transmission quality of the whole system will be affected.
Due to the influence of the rf front end and the rf chip transceiver internal filter, the frequency response at the signal sideband will be lower than the frequency response of the intermediate channel, and if the synchronization signal is located at the sideband, the RSRP estimated by the synchronization signal will be smaller than the actual signal strength. In order to improve the accuracy of RSRP calculation, the existing RSRP calculation method needs to scan frequency response compensation values under all signal transmission parameters in advance to compensate signals and then calculate the signals, so that although the problem of frequency response difference under different signal transmission parameters is solved, due to the fact that front-end communication devices among different projects are different, frequency responses of different projects are different, and different projects cannot be covered by the same set of frequency response compensation values; if each project is pre-scanned for a set of frequency response compensation values, it is time consuming, labor consuming and difficult to maintain.
Therefore, how to improve the calculation efficiency of the reference signal received power is a technical problem to be solved in the art.
[ summary of the invention ]
In order to solve the problem of low calculation efficiency of reference signal received power in the prior art, the application provides a method for calculating the reference signal received power.
A method of reference signal received power calculation, comprising:
acquiring a signal transmission parameter of a signal transmission device, and determining a 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;
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.
Preferably, before acquiring a signal transmission parameter of a signal transmission device and determining a fixed frequency response compensation value corresponding to the signal transmission parameter, the method further includes:
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.
Preferably, the calculating a 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;
sending a signal transmitting instruction of a single tone test signal to the signal transmitting device; the signal emission instruction of the tone test signal is used for instructing the signal emission device to emit a 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.
Preferably, the method further comprises:
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.
Preferably, after determining the fixed frequency response compensation value corresponding to the signal transmission parameter, the method further includes:
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.
Preferably, the signal transmission parameter includes 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.
Preferably, 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.
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 the 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.
An electronic device, comprising:
a processor and a memory for storing at least one instruction which when loaded and executed by the processor is to implement the method of reference signal received power calculation as described above.
A computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of reference signal received power calculation as described above.
The method for calculating the received power of the reference signal provided by the embodiment of the application is characterized in that a fixed frequency response compensation value corresponding to a signal transmission parameter of a signal transmission device is predetermined, the fixed frequency response compensation value is a frequency response compensation value of a radio frequency chip, because filters in radio frequency chip transceivers of different communication devices have high consistency, the fixed frequency response compensation value is not changed according to the change of front-end equipment, but only according to the change of the signal transmission parameter, so that when the frequency responses of different projects are different, the fixed frequency response compensation values under all the signal transmission parameters do not need to be recalculated, only the received signal is compensated according to the front-end frequency response compensation value of the communication device to be detected and the fixed frequency response compensation value corresponding to the current signal transmission parameter, and finally the received power of the reference signal of the communication device to be detected is calculated according to the compensated received signal, the calculation efficiency of the reference signal received power is greatly improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a frequency response graph of four downlink channels in an N41 frequency band according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a reference signal received power calculation system according to an embodiment of the present application;
fig. 3 is a flowchart of a method for calculating a reference signal received power according to an embodiment of the present application;
fig. 4 is a schematic diagram illustrating a frequency response compensation value splitting according to an embodiment of the present application;
fig. 5 is a flowchart of another method for calculating a reference signal received power according to an embodiment of the present disclosure;
FIG. 6 is a graph of frequency response of internal filters of different RF chip transceivers according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an apparatus for calculating a reference signal received power according to an embodiment of the present application.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. 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 application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
For ease of understanding, the embodiments of the present application describe herein the terms to which the embodiments of the present application relate:
1) and frequency response: the frequency response is used for describing the difference of the processing capacity of an instrument for signals with different frequencies electronically, the frequency response curve refers to the variation curve of gain along with frequency, the ideal frequency response curve is flat, and the signals are not distorted after passing through.
2) 5 GNR: fifth Generation Mobile Communication Technology (5G) New air interface (NR) is a global 5G standard for New air interface design based on Orthogonal Frequency Division Multiplexing (OFDM).
3) Reference signal received power: the reference signal received power is an average value of signal powers received on all resource elements carrying a reference signal within a certain symbol, that is, subcarrier power, and for a mobile communication network, one OFDM subcarrier bandwidth is fixed, that is, as long as the carrier bandwidth is determined, the number of subcarriers can be determined, and then RSRP power is calculated.
Referring to fig. 1, a graph of frequency response of four downlink channels in the N41 frequency band is provided according to an embodiment of the present application.
Due to the physical characteristics of the frequency response, the frequency response at the Signal sidebands will be lower than the amplitude of the middle channel, and since the position of the NR Synchronization Signal Block (SSB) is not fixed, if the SSB position is at the sidebands, the RSRP estimated by the SSB will be smaller than the actual Signal strength. Here, taking an NR cell as 100MHz as an example, NR downlink needs to support a 100M signal bandwidth, there are 273 Resource Block (RB) signals in the 100M signal, and for an SSB with a subcarrier bandwidth of 30KHz, there are 20RB signals, that is, the SSB signal has a bandwidth of 7.2MHz in total, and the measurement result of the bandwidth of 7.2MHz does not necessarily accurately reflect the entire situation of the 100MHz bandwidth.
Therefore, in order to improve the accuracy of RSRP calculation, the existing RSRP calculation method needs to compensate the signal by using a frequency response compensation value and then calculate the RSRP, and as can be seen from fig. 1, the frequency responses are different under different signal transmission parameters, so that in order to facilitate RSRP calculation, the existing scheme is to scan the frequency response values under all signal transmission parameters in advance, then determine the corresponding frequency response compensation values, and then calculate the RSRP after compensating the signal by using the compensation values, although the problem of frequency response differences under different signal transmission parameters is solved, due to the difference of front-end communication devices among different projects, the frequency responses of different projects are different, and if the same set of frequency response compensation value is used, different projects cannot be covered; if each project is pre-scanned for a set of frequency response compensation values, it is time consuming, labor consuming and difficult to maintain. The present application therefore provides a method for calculating the received power of a reference signal, which is used to solve the above problems.
For convenience of understanding, the items mentioned herein may be understood as the model of the communication device under test, wherein the same item refers to the same brand and model of the communication device under test, and different items refer to different brands or the same brand but different model of the communication device under test.
Example one
Referring to fig. 2, a schematic diagram of a reference signal received power calculating system provided in an embodiment of the present application includes a signal transmitting apparatus 10, a communication apparatus to be tested 20, and a reference signal received power calculating apparatus 30, wherein:
the signal transmitting device 10 is configured to transmit 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 to be tested 20 is used for receiving the signal transmitted by the signal transmitting device 10;
the reference signal receiving power calculating device 30 is configured to obtain a signal transmitting parameter of the signal transmitting device 10, and determine a fixed frequency response compensation value corresponding to the signal transmitting parameter; acquiring first equipment information of the communication device 20 to be tested, and determining a front-end frequency response compensation value of the communication device 20 to be tested according to the first equipment information; acquiring a first receiving signal of the communication device 20 to be tested, 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 20 to be tested according to the compensated first receiving signal.
In a specific embodiment, before obtaining the current signal transmission parameter of the signal transmitting apparatus 10, the reference signal received power calculating apparatus 30 may further send a signal transmission instruction containing a specified signal transmission parameter to the signal transmitting apparatus 10, and the signal transmitting apparatus 10 transmits a corresponding signal according to the specified signal transmission parameter;
in a specific embodiment, before acquiring the signal transmission parameters of the signal transmitting apparatus 10, the reference signal received power calculating apparatus 30 may further send a signal transmission instruction including all the signal transmission parameters and a signal transmission policy to the signal transmitting apparatus 10, so that the signal transmitting apparatus 10 can select corresponding signal transmission parameters according to the signal transmission policy and transmit corresponding signals according to the selected signal transmission parameters;
in a specific embodiment, the signal transmitting device may be at least one of 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, and a random signal generator;
note that the present application does not specifically limit the type of the signal transmission device 10.
Example two
Referring to fig. 3, a flowchart of a method for calculating a reference signal received power according to an embodiment of the present application is shown, and the method is applied to a reference signal received power calculating apparatus 30 of the reference signal received power calculating system shown in fig. 2, and includes the following steps:
and step S01, acquiring the signal emission parameters of the signal emission device, and determining the fixed frequency response compensation value corresponding to the signal emission parameters.
Please refer to fig. 4, which is a schematic diagram illustrating a frequency response compensation value splitting according to an embodiment of the present application, wherein the frequency response difference between different items under the same signal transmission parameter is analyzed to determine that the frequency response difference is caused by different radio frequencies of the front-end communication device between the different items. The radio frequency consists of a radio frequency front end and a radio frequency chip, and filters in radio frequency chip transceivers of different communication devices have high consistency, namely, the reason that frequency response differences exist between different items under the same signal transmission parameters is substantially caused by the difference of the radio frequency front ends, so that the frequency response compensation value is divided 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 a corresponding frequency response compensation value under the frequency response difference caused by the difference of radio frequency front-end devices, and is determined by the inherent property of each front-end communication device;
the fixed frequency response compensation value is the frequency response compensation value of the radio frequency chip, and because the filters in the radio frequency chip transceivers of different communication devices have high consistency, the fixed frequency response compensation value can not change due to different front-end communication devices, but only change according to the change of signal transmission parameters.
That is, it can be understood that the frequency response compensation values of different items are different from each other, and therefore, only the front-end frequency response compensation value of a certain item and the fixed frequency response compensation value corresponding to a certain transmission condition need to be determined, the frequency response compensation value of the item under the signal transmission parameter can be determined, and then the received signal is compensated by using the frequency response compensation value, and finally the reference signal received power is calculated.
Therefore, the current signal transmission parameter of the signal transmission device is obtained, the fixed frequency response compensation value corresponding to the signal transmission parameter is determined, the received signal can be compensated only by determining the front-end frequency response compensation value of the communication device to be detected, and the reference signal receiving power is calculated.
In a specific embodiment, the reference signal received power calculation device sends a first acquisition instruction to the signal transmitting device, when the signal transmitting device receives the first acquisition instruction, the signal transmitting device determines a signal transmitting parameter used by the signal transmitted at the time and feeds the signal transmitting parameter back to the reference signal received power calculation device, and the reference signal received power calculation device determines a fixed frequency response compensation value corresponding to the signal transmitting parameter.
In a specific embodiment, the signal transmission parameter includes 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.
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, where the preset corresponding relationship may be a table storing the corresponding relationship between the signal transmission parameter and the fixed frequency response compensation value, or may be a data structure in another form for representing the corresponding relationship.
In a specific embodiment, the corresponding relationship may be obtained by receiving user input, by connecting to a preset server, or by downloading from a preset network disk, which is not specifically limited in the present application.
Step S02, obtaining first device 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 device information.
In one embodiment, the reference signal received power calculation device sends a second acquisition instruction to the communication device to be tested, and when the communication device to be tested receives the second acquisition instruction, the first device information of the communication device to be tested is fed back to the reference signal received power calculation device, so that the reference signal received power calculation device determines the front-end frequency response compensation value of the communication device to be tested according to the first device information.
In an embodiment, the corresponding relationship between the device information and the front-end frequency response compensation value may be obtained from a preset position in advance, 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 an embodiment, the device information is a calibration gain table of the communication device under test, and on this basis, the determining the front-end frequency response compensation value of the communication device under test according to the device information mentioned herein may specifically be:
determining the gain of the communication device to be tested under each channel according to the calibration gain table;
and calculating the difference value between each gain and the preset gain, and determining the front-end frequency response compensation value of the communication device to be tested according to each difference value.
The calibration Gain table mentioned here is a calibration Gain table generated when the communication apparatus is subjected to Automatic Gain Control (AGC) calibration at the time of shipment, the generated calibration Gain table is stored in the communication apparatus, and the purpose of AGC calibration is that the signal intensity before finally entering the demodulation circuit is substantially the same regardless of the signal intensity at the position of the communication apparatus. The calibration gain table generated in the AGC calibration process can control the AGC circuit to amplify the Received Signal Strength Indication (RSSI) to a degree that meets the demodulation threshold using a specific amplification factor, so that the gain of the communication device to be tested in each channel can be determined according to the calibration gain table.
The preset gain mentioned here may be specifically the maximum value of the gain of the communication device to be measured in each channel, so that the present application can determine the gain of the communication device to be measured in each channel according to the obtained calibration gain table, and the calculated difference value between each gain and the preset gain is the frequency response difference value of each channel relative to the optimal channel, thereby determining that the front-end frequency response compensation value for performing frequency response compensation is the same as the frequency response difference value.
Step S03, obtaining a first receiving signal of the communication device to be tested, compensating the first receiving signal according to the fixed frequency response compensation value and the front end frequency response compensation value, and calculating a reference signal receiving power of the communication device to be tested according to the compensated first receiving signal.
In one embodiment, the reference signal received power calculating device sends a third obtaining instruction to the communication device to be tested, and when the communication device to be tested receives the third obtaining instruction, the communication device to be tested feeds back a first received signal of the communication device to be tested to the reference signal received power calculating device, where the first received signal is a received signal obtained by the communication device to be tested receiving a signal emitted by the signal emitting device under the signal emitting parameter. The reference signal receiving power calculating device compensates the first receiving signal according to the fixed frequency response compensation value and the front end frequency response compensation value, and calculates the reference signal receiving power of the communication device to be detected according to the compensated first receiving signal.
In one 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 may be compensated according to the total frequency response compensation value.
In an embodiment, the received signal may also be sequentially compensated by using the fixed frequency response compensation value and the front-end frequency response compensation value, and the order of the compensation of the fixed frequency response compensation value and the front-end frequency response compensation value is not particularly limited in this application.
The method for calculating the received power of the reference signal provided by the embodiment of the application determines the fixed frequency response compensation value corresponding to the current signal transmission parameter in advance, the fixed frequency response compensation value is the frequency response compensation value of the radio frequency chip, and the fixed frequency response compensation value is changed only according to the change of the signal emission parameters because the filters in the radio frequency chip transceivers of different communication devices have high consistency, therefore, when the conditions that the frequency responses are different due to different projects are faced, the fixed frequency response compensation values under all signal transmission parameters do not need to be recalculated, the received signals only need to be compensated according to the front-end frequency response compensation value of the communication device to be detected and the fixed frequency response compensation value corresponding to the current signal transmission parameter, and finally the reference signal receiving power of the communication device to be detected is calculated according to the compensated received signals, so that the calculation efficiency of the reference signal receiving power is greatly improved.
EXAMPLE III
Referring to fig. 5, a flowchart of another method for calculating the received power of the reference signal according to the embodiment of the present application is shown, where the method is applied to the received power of the reference signal calculating device 30 of the received power of the reference signal calculating system shown in fig. 2, and the received power of the reference signal calculating system may further include a predetermined communication device.
The method comprises the following steps:
step S11, obtaining at least one preset signal transmission parameter, and sending a signal test instruction including the signal transmission parameter to the signal transmission device for each signal transmission parameter in the at least one preset signal transmission parameter.
In a specific embodiment, the obtaining of the preset at least one signal transmission parameter may specifically be obtaining all signal transmission parameters, where all the signal transmission parameters mentioned here are all signal transmission parameters corresponding to all transmission conditions of the signal transmission apparatus. It should be noted that 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 parameter may be obtained by receiving a user input, by connecting to a preset server, or by downloading from a preset network disk, which is not specifically limited in this application.
In one embodiment, when the signal transmitting apparatus receives the signal test command, the signal transmitting apparatus determines a signal transmission parameter corresponding to the signal test command, and then transmits a corresponding test signal according to the signal transmission parameter, so that the predetermined communication apparatus can receive the test signal.
Step S12, obtaining second device information of the preset communication apparatus, and determining a front-end frequency response compensation value of the preset communication apparatus according to the second device information.
In a specific embodiment, the reference signal received power calculation device sends a fourth acquisition instruction to the preset communication device, and when the preset communication device receives the fourth acquisition instruction, the preset communication device feeds back second device information of the preset communication device to the reference signal received power calculation device, so that the reference signal received power calculation device determines a front-end frequency response compensation value of the preset communication device according to the second device information.
Step S13, obtaining a second received signal of the preset communication device, and calculating a total frequency response compensation value corresponding to the signal transmission parameter according to the second received signal.
In an embodiment, the reference signal received power calculating device sends a fifth obtaining instruction to the communication device to be tested, and when the preset communication device receives the fifth obtaining instruction, the preset communication device feeds back a second received signal of the communication device to be tested to the reference signal received power calculating device, where the second received signal is a 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 receiving power calculating device calculates a total frequency response compensation value corresponding to the signal transmitting parameter according to the second receiving signal.
Step S14, 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.
As can be seen from the content of the second embodiment, the total frequency response compensation value is composed of a front end frequency response compensation value and a fixed frequency response compensation value, and in this embodiment, after the total frequency response compensation value and the front end frequency response compensation value are determined, the fixed frequency response compensation value corresponding to the signal transmission parameter can be determined to be the difference between the total frequency response compensation value and the front end frequency response compensation value.
The embodiment of the present application aims to determine a fixed frequency response compensation value corresponding to each signal transmission parameter, so that the present application calculates a total frequency response compensation value in advance according to a received signal, and then calculates a difference between the total frequency response compensation value and a front-end frequency response compensation value.
In one embodiment, in order to improve the calculation accuracy of the total frequency response compensation value, the reference signal may be simulated by an external single tone signal for calculation, that is, the step S14 is to calculate the total frequency response compensation value corresponding to the signal transmission parameter according to the received signal corresponding to the signal transmission parameter, and the method may specifically be implemented by performing the following steps:
step S141: a first signal strength value of the second received signal is determined from the second received signal.
Step S142: and sending a signal transmitting instruction of the single-tone test signal to the signal transmitting device.
The signal emission instruction of the tone test signal mentioned here is used for instructing the signal emission device to emit the tone signal with the preset frequency under the signal emission parameter;
in one embodiment, after the reference signal received power calculating device sends the signal transmitting command of the tone test signal to the signal transmitting device, the signal transmitting device apparatus determines the corresponding preset frequency according to the signal transmitting command, and transmits the tone signal of the preset frequency under the signal transmitting parameter, so that the preset communication apparatus receives the tone signal.
In a specific embodiment, the reference signal received power calculating device may further send a received modification instruction to the signal transmitting device, where the modification instruction is used to modify the preset frequency of the single tone signal, and the modification instruction may be input by a user or issued by a system, and the source of the modification instruction is not specifically limited in this application.
Step S143: and 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.
The third received signal mentioned here is a received signal obtained by receiving the single tone signal by a predetermined communication device;
in a specific embodiment, the reference signal received power calculation device sends a sixth acquisition instruction to the communication device to be tested, when the preset communication device receives the sixth acquisition instruction, the preset communication device feeds back a third received signal of the communication device to be tested to the reference signal received power calculation device, and the reference signal received power calculation device determines a second signal strength of the third received signal according to the third received signal.
Step S144: 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.
In this step, a difference between the first signal strength value and the second signal strength value indicates a frequency response difference between a second received signal received by the predetermined communication device and the reference signal, and then a total frequency response compensation value required to compensate the second received signal is the frequency response difference.
And step S01, acquiring the signal emission parameters of the signal emission device, and determining the fixed frequency response compensation value corresponding to the signal emission parameters.
On the basis of the foregoing embodiment, in a specific embodiment, after obtaining the fixed frequency response compensation value corresponding to each signal transmission parameter, in order to store the corresponding relationship between the signal transmission parameter and the fixed frequency response compensation value, the following steps may be further performed:
storing the corresponding relation between each preset signal emission parameter and the corresponding fixed frequency response compensation value;
on this basis, the step S01 of determining the fixed frequency response compensation value corresponding to the signal transmission parameter may specifically be:
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.
Step S02, acquiring first device 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 device information.
Step S03, obtaining a first receiving signal of the communication device to be tested, compensating the first receiving signal according to the fixed frequency response compensation value and the front end frequency response compensation value, and calculating a reference signal receiving power of the communication device to be tested according to the compensated first receiving signal.
It should be noted that the steps S01 to S03 in this embodiment are consistent with the steps S01 to S03 in the second embodiment in technical solution and beneficial effects, and are not described herein again.
Example four
According to the embodiment of the application, the reference signal is simulated through the external-filling single tone signal, and the signal frequency of the single tone signal is the frequency offset of adding 1Mhz to the downlink local oscillator frequency; to model the difference between the different SSB positions and the calibration result, for example, 100M bandwidth, subcarrier spacing SCS is 30K, the signal source sets RB 13 REs and number 20. And traversing RB frequency offset, and calculating the difference between the signal intensity of different SSB positions and AGC calibration gain at certain intervals, wherein the difference is the total frequency response compensation value. Each frequency band scans high, medium and low channels, and all channels in the frequency band select compensation parameters nearby. The latitudes that need to be covered are: different gain words, different channels, different frequency bands, different SSB positions, different bandwidths, different downlink paths.
The specific process comprises the following steps:
1) setting a signal transmitting device to transmit a modulation signal, wherein the bandwidth is 20RB, the signal intensity ensures that the device can work in a linear region, the signal intensity is kept unchanged, and the modulation signal is externally injected through an antenna port;
2) selecting a frequency band, a gain word and a channel, and obtaining corresponding RSSI values by traversing the positions of different RBs (20 RB intervals each time);
3) setting a signal transmitting device to transmit a single-tone signal, setting the frequency to be that the local oscillator is deviated to the right by 1MHz, and keeping the signal intensity consistent with that in the step 1) to obtain an RSSI value of the single-tone signal;
4) obtaining a compensation value of RSRP by making a difference between the RSSI value obtained in the step 1) and the RSSI value obtained in the step 3);
5) repeating the steps 1) to 4) for different frequency bands, different downlink paths, different channels and different gain words to obtain the data in the following table:
the data in the table is a total frequency response compensation value, the total frequency response compensation value can be divided into a front end frequency response compensation value and a fixed frequency response compensation value, the front end frequency response compensation value can be obtained by AGC calibration, and the front end frequency response compensation value is subtracted from the total frequency response compensation value to obtain the fixed frequency response compensation value, as shown in fig. 6, for the frequency response curve graphs of the internal filters of the different radio frequency chip transceivers provided in the embodiments of the present application, it can be known that the internal filters of the radio frequency chip transceivers have high consistency, and the difference between the frequency response curves of the internal filters of the different radio frequency chip transceivers can be ignored, so the fixed frequency response compensation value is written by software after being obtained.
For different items using the radio frequency chip transceiver, a total frequency response compensation value is obtained by adding a front end frequency response compensation value obtained by AGC calibration to a fixed frequency response compensation value written in software.
Compared with the prior art that the total frequency response compensation value needs to be stored in the memory in a quadratic function fitting mode, the memory space cost is greatly increased, the frequency response compensation value does not need to be stored in the memory, the frequency response compensation value is directly written by software, and the increase of the memory space cost is avoided. The embodiment of the application can realize accurate compensation effect, and the actual measurement result shows that the error range of +/-0.5db can be met.
EXAMPLE five
Please refer to fig. 7, which is a schematic structural diagram of an apparatus for calculating a reference signal received power according to an embodiment of the present application, the apparatus including:
a first obtaining module 301, configured to obtain a signal transmission parameter of a signal transmitting apparatus, and determine a 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;
a second obtaining module 302, configured to obtain 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; the front-end frequency response compensation value is a frequency response compensation value of a radio frequency front end;
a third obtaining module 303, configured to obtain a first receiving signal of the communication device to be detected, compensate the first receiving signal according to the fixed frequency response compensation value and the front-end frequency response compensation value, and calculate a reference signal receiving power of the communication device to be detected according to the compensated first receiving signal.
On the basis of the above embodiment, in a specific embodiment, the apparatus may further include:
a fourth obtaining module, configured to obtain at least one preset signal transmission parameter, and send a signal test instruction including the signal transmission parameter to the signal transmitting apparatus for each signal transmission parameter in the at least one preset signal transmission parameter, where the signal test instruction is used to instruct the signal transmitting apparatus to transmit a test signal using the signal transmission parameter;
a fifth obtaining module, configured to obtain second device information of the preset communication apparatus, and determine a front-end frequency response compensation value of the preset communication apparatus according to the second device information;
a sixth obtaining module, configured to obtain 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, where the second received signal is a received signal obtained by the preset communication device receiving the test signal;
and the first determining module is used for determining a fixed frequency response compensation value corresponding to the signal transmitting parameter according to the total frequency response compensation value corresponding to the signal transmitting 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 for sending a signal sending instruction of the single-tone test signal to the signal sending device; the signal emission instruction of the tone test signal is used for instructing the signal emission device to emit a tone signal with a preset frequency under the signal emission parameter;
a second sending unit, configured to send a third obtaining instruction to the preset communication apparatus, where the third obtaining instruction is used to obtain a single-tone receiving signal received by the preset communication apparatus under the signal transmission parameter;
a first obtaining unit, configured to obtain a third received signal of the preset communications apparatus, and determine a second signal strength value of the third received signal according to the third received signal, where the third received signal is a received signal obtained by the preset communications apparatus receiving the single tone signal;
and the first calculating unit is used for calculating the difference value between the first signal strength value and the second signal strength value to obtain the total frequency response compensation value corresponding to the signal emission parameter.
On the basis of the foregoing embodiment, in a specific embodiment, the second computing module may further include:
and the third sending unit is used for 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.
On the basis of the above embodiment, in a specific embodiment, the apparatus may further include:
the storage module is used for storing the corresponding relation between each preset signal emission parameter and the corresponding fixed frequency response compensation value;
the first obtaining module 301 may include:
and the second acquisition unit is used for 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.
On the basis of the foregoing embodiments, in a specific embodiment, the signal transmission parameter includes 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.
On the basis of the foregoing 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, according to the calibration gain table, a gain of the communication device under test in each channel;
and the third acquisition unit is used for acquiring preset gains, calculating the difference value between the gain under each channel and the preset gains, and determining the difference value between the gain under each channel and the preset gains as the front-end frequency response compensation value of the communication device to be detected.
EXAMPLE six
The embodiment provides an electronic device, which includes a processor and a memory, where the memory is used to store at least one instruction, and the instruction is loaded and executed by the processor to implement the method for calculating the received power of the reference signal described above, and the execution manner and the beneficial effects are similar, and are not described herein again.
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 method for calculating the received power of the reference signal is implemented, and the execution manner and the beneficial effects thereof are similar, and are not described herein again.
The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.
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.
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