CN110768734A

CN110768734A - Measuring method and device

Info

Publication number: CN110768734A
Application number: CN201810830981.0A
Authority: CN
Inventors: 鄂楠
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-07-26
Filing date: 2018-07-26
Publication date: 2020-02-07
Anticipated expiration: 2038-07-26
Also published as: WO2020020250A1; CN110768734B

Abstract

The embodiment of the application discloses a measuring method and a measuring device, relates to the technical field of communication, and solves the problem that in the prior art, beam forming gain causes interference to errors of measured values, so that the errors of the determined measured values are inaccurate. The specific scheme is as follows: the measuring equipment detects and measures a Reference Signal Received Power (RSRP) measured value of the millimeter wave signal; calculating a signal arrival angle AoA of the millimeter wave signal; searching a pre-configured database according to the AoA, and acquiring a beam forming gain reference value corresponding to the AoA; wherein the database comprises at least one AoA and beamforming gain reference values corresponding to each AoA in the at least one AoA; and acquiring an RSRP calibration value for measuring the millimeter wave signals according to the RSRP measurement value and the beam forming gain reference value corresponding to the AoA.

Description

Measuring method and device

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a measuring method and a measuring device.

Background

In the development of 5G, the requirements for millimeter wave (frequency >6GHz) applications have been determined, and the combination of millimeter wave and beam forming techniques has also enabled 5G communication systems to have high bandwidth and support simultaneous communication for a large number of users. At present, receiving and measuring technologies for millimeter waves are influenced by millimeter wave characteristics and integration of a 5G chip, and can only be performed in an Air interface technology (OTA) environment, a measuring scheme for millimeter waves is defined in TS38.810, and due to the limitation of low understanding degree of chip structure, millimeter wave characteristics and current baseband measuring reference point scheme, two problems need to be solved for testing the RSRP measurement value accuracy of millimeter waves on the baseband side at present: firstly, a test instrument or environment needs to know the beam forming gain of a test machine; the second is that the test instrument or environment needs to eliminate the influence of the beamforming gain on the error value.

In the case of indirect far-field Test, a Reference antenna with known gain is placed at the same position of a tester (DUT) during Test to perform a comparison Test, and an error of a DUT baseband measurement value is determined according to Reference Signal Receiving Power (RSRP) reported by a DUT baseband and RSRP measured by the Reference antenna with known gain. Because the test scheme has the beamforming gain, the RSRP reported by the DUT baseband includes both the beamforming gain and the error value, and the RSRP measured by the reference antenna with known gain in the test scheme also includes the beamforming gain, so the beamforming gain interferes with the error of the RSRP measurement value, and the determined error of the RSRP measurement value is inaccurate.

Disclosure of Invention

The embodiment of the application provides a measurement method and a measurement device, which can eliminate interference of beam forming gain on a test result and obtain more accurate RSRP measurement value errors.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect of embodiments of the present application, a measurement method is provided, where the method includes: the measuring equipment detects and measures a Reference Signal Received Power (RSRP) measured value of the millimeter wave signal; calculating the signal arrival angle AoA of the measured millimeter wave signal; searching a pre-configured database according to the AoA, and acquiring a beam forming gain reference value corresponding to the AoA; wherein the database comprises at least one AoA and a beamforming gain reference value corresponding to each AoA in the at least one AoA; and calculating the RSRP calibration value of the millimeter wave signal according to the RSRP measurement value and the beamforming gain reference value corresponding to the AoA. The measuring equipment is a baseband chip or terminal equipment. Based on the scheme, the RSRP calibration value without the beam forming gain can be obtained by subtracting the reference value of the beam forming gain corresponding to the signal arrival angle of the millimeter wave beam signal from the RSRP measurement value with the beam forming gain measured by the baseband, so that the influence of the baseband beam forming gain on the test scheme is eliminated.

With reference to the first aspect, in a first possible implementation manner, a beamforming gain reference value corresponding to one AoA is obtained according to at least two RSRP measurement values and an RSRP true value detected at the AoA; the true value of RSRP is measured by an instrument connected with a 0dBi omnidirectional antenna, and the center of the radio frequency antenna of the measuring equipment is aligned with the center of a sphere of the 0dBi omnidirectional antenna. Based on the scheme, the reference value of the beam forming gain can be obtained according to the RSRP measurement value and the RSRP real value.

With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the at least two RSRP measurement values are measured by at least two measurement devices of the same model as the measurement devices. Based on the scheme, the purpose of measuring for many times by adopting a plurality of baseband chips is to eliminate the influence of a single baseband chip so as to obtain a more accurate beam forming gain reference value.

With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the method further includes: and calculating the error of the RSRP measured value detected by the measuring equipment according to the RSRP calibration value and the RSRP real value. Based on this scheme, can obtain comparatively accurate RSRP measured value error.

With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the calculating a signal arrival angle AoA of the measured millimeter wave signal includes: and calculating the AoA of the millimeter wave signal according to the RSRP value of the millimeter wave signal detected by the measuring equipment. Based on the scheme, the signal arrival angle of the millimeter waves can be obtained according to the RSRP measurement value.

In a second aspect of the embodiments of the present application, there is provided a measurement apparatus, including: the detection unit is used for detecting a Reference Signal Received Power (RSRP) measured value of the millimeter wave signal; a processing unit, configured to calculate a signal arrival angle AoA of the measured millimeter wave signal; an obtaining unit, configured to search a pre-configured database according to the AoA calculated by the processing unit, and obtain a beamforming gain reference value corresponding to the AoA; wherein the database comprises at least one AoA and beamforming gain reference values corresponding to each AoA in the at least one AoA; the processing unit is further configured to calculate an RSRP calibration value of the millimeter wave signal according to the RSRP measurement value detected by the detecting unit and the beamforming gain reference value corresponding to the AoA acquired by the acquiring unit. The measuring device is a baseband chip or terminal equipment.

With reference to the second aspect, in a first possible implementation manner, a beamforming gain reference value corresponding to one AoA is obtained according to at least two RSRP measurement values and an RSRP true value detected at the AoA; wherein the RSRP true value is measured by an instrument connected with a 0dBi omnidirectional antenna; the center of the radio frequency antenna of the measuring device is aligned with the center of the sphere of the 0dBi omnidirectional antenna.

With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the at least two RSRP measurement values are detected by at least two measurement devices of the same model as the measurement devices.

With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the processing unit is further configured to calculate an error of the RSRP measurement value detected by the detecting unit according to the RSRP calibration value and the RSRP true value.

With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the processing unit is specifically configured to calculate an AoA of the millimeter wave signal according to an RSRP measurement value of the millimeter wave signal detected by the detecting unit.

For the above description of the effects of the second aspect and the various implementations of the second aspect, reference may be made to the description of the corresponding effects of the first aspect and the various implementations of the first aspect, and details are not repeated here.

In a third aspect of the embodiments of the present application, an apparatus is provided, where the apparatus includes a processor and a memory, where the memory is configured to be coupled to the processor and store necessary program instructions and data of the server, and the processor is configured to execute the program instructions stored in the memory, so that the server performs the measurement method described in the first aspect or any of the possible implementations of the first aspect.

A fourth aspect of the embodiments of the present application provides a computer storage medium, in which computer program code is stored, and when the computer program code runs on a processor, the processor is caused to execute the measurement method according to the first aspect or any one of the possible implementation manners of the first aspect.

In a fifth aspect of the embodiments of the present application, a computer program product is provided, where the computer program product stores computer software instructions executed by the processor, and the computer software instructions include a program for executing the solution of the above aspect.

In a sixth aspect of the embodiments of the present application, there is provided an apparatus in the form of a chip, the apparatus includes a processor and a memory, the memory is configured to be coupled with the processor and stores necessary program instructions and data of the apparatus, and the processor is configured to execute the program instructions stored in the memory, so that the apparatus performs the functions of the measuring apparatus in the above method.

Drawings

FIG. 1 is a schematic diagram of an indirect far-field testing scheme provided by an embodiment of the present application;

fig. 2 is a schematic structural diagram of a measurement apparatus provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of another measurement apparatus provided in an embodiment of the present application;

fig. 4 is a flowchart of a measurement method provided in an embodiment of the present application;

fig. 5 is a schematic diagram of a measurement device provided in the embodiment of the present application for detecting a millimeter wave RSRP;

fig. 6 is a schematic diagram of detecting millimeter waves RSRP by using a 0dBi omnidirectional antenna according to an embodiment of the present disclosure;

fig. 7 is a schematic position diagram of a measurement device and a 0dBi omnidirectional antenna for detecting a millimeter wave RSRP according to an embodiment of the present disclosure;

FIG. 8 is a flow chart of another measurement method provided by embodiments of the present application;

fig. 9 is a schematic composition diagram of a measurement apparatus provided in an embodiment of the present application;

fig. 10 is a schematic composition diagram of another measurement apparatus provided in an embodiment of the present application.

Detailed Description

First, some terms referred to in the embodiments of the present application are explained:

1. indirect far field testing

Illustratively, for the measuring scheme of the millimeter wave OTA environment, a far-field test is generally adopted, but because the distance required by the condition of the far-field test is longer, the embodiment of the application adopts an indirect far-field test, which is to reflect millimeter waves through a reflector, and establish connection between the measuring equipment and the millimeter wave signal under the condition of ensuring the distance of the far field. As shown in fig. 1, a millimeter wave beam emitted from the transmitting antenna is transmitted to the measurement device DUT through the reflector, so that the test condition of the millimeter wave satisfies the requirement of a long distance. The embodiment of the present application does not limit the specific antenna category of the transmitting antenna.

It should be noted that, in the following embodiments of the present application, the distance between the center positions of the transmitting antenna and the radio frequency antenna of the receiver (measurement device DUT) is not changed, that is, the embodiments of the present application are test schemes performed at the same far-field distance.

2. Reference Signal Received Power (RSRP)

The reference signal received power is one of the key parameters that can represent the radio signal strength in LTE networks and the physical layer measurement requirements, and is the average of the received signal power over all REs (resource elements) that carry reference signals within a certain symbol.

The parameters in the embodiment of the application comprise an RSRP measured value, an RSRP real value and an RSRP calibration value. The RSRP measurement value is the RSRP of the measuring millimeter wave signal detected by the measuring equipment, and the RSRP measurement value contains the beam forming gain; the true value of RSRP is measured by an instrument connected to the 0dBi omnidirectional antenna, which can be any instrument with signal analysis functionality, e.g., a signal analyzer, that does not contain beamforming gain due to the characteristics of the 0dBi omnidirectional antenna; the RSRP calibration value is obtained by calculating a difference value between the RSRP measurement value and the beamforming gain reference value, is the RSRP value excluding the beamforming gain, and can be used for comparing with the RSRP real value to obtain an error of the RSRP measurement value.

3. Database with a plurality of databases

The database in the embodiment of the application may be a preconfigured database stored in the measurement device before the measurement device leaves a factory, and when a certain test distance is stored in the database, the corresponding beam forming gain reference value of the millimeter wave signal at different signal arrival angles is tested, and the test distance is a distance that can be reached within a range specified by the test instrument and the protocol. Wherein the beamforming gain reference value corresponding to each AoA is obtained according to at least two RSRP measurement values and an RSRP real value detected in the AoA, and the at least two RSRP measurement values are measured by at least two measuring devices with the same model as the measuring devices.

4. Measuring device

The measuring device in the embodiment of the present application may be a baseband chip or a terminal device including a baseband chip. The baseband chip or the terminal device is used for detecting and measuring an RSRP measurement value of a millimeter wave signal, acquiring a relatively accurate RSRP measurement value error excluding a beam forming gain according to the measurement method in the embodiment of the application, and calibrating the measurement device according to the measurement value error.

For example, when the measuring device is a baseband chip, the structure of the baseband chip 200 can be divided into five sub-blocks as shown in fig. 2: a processor 201, a channel encoder 202, a digital signal processor 203, a modulator/demodulator 204 and an interface module 205.

The processor 201 is configured to control and manage the terminal device, including timing control, digital system control, radio frequency control, power saving control, human-computer interface control, and the like. Illustratively, the control may be a Microprocessor (MCU) which may include a CPU core and a single-chip microcomputer support system, and the microprocessor unit may employ an ARM processor core.

And a channel encoder 202, configured to perform channel encoding, encryption, and the like for the traffic information and the control information, where the channel encoding includes convolutional encoding, FIRE code, parity code, interleaving, and burst formatting.

A digital signal processor 203 for radio frequency control, channel coding, equalization, inter-and de-inter-interpolation, AGC, AFC, SYCN, cryptographic algorithms, neighbor cell monitoring, etc. The digital signal processor may also handle other functions such as the generation of two-tone multi-tones and the cancellation of some short-time echoes.

A modulator/demodulator 204 for converting digital transmissions from the terminal equipment into analog signals capable of being transmitted over the telephone system, and also converting analog signals from the telephone line into digital signals capable of being understood by the terminal equipment.

The interface module 205 may include three sub-blocks of an analog interface, a digital interface, and a human-machine interface. Wherein, the analog interface can include: a voice input/output interface, a radio frequency control interface; the digital interface may include: a system interface, a SIM card interface, a test interface, an EEPROM interface, a memory interface and the like; and the man-machine interface is used for supporting interaction and information exchange between the system and the user.

It is understood that fig. 2 is only an exemplary illustration, in practical applications, the baseband chip 200 may include more or less components than those shown in fig. 2, and the structure shown in fig. 2 does not set any limit to the baseband chip provided in the embodiment of the present application.

Illustratively, when the measuring device is a terminal device, the structure of the terminal device 300 is shown in fig. 3, and includes a radio frequency module 301, a baseband module 302, a power management module 303, a peripheral 304, and software 305.

The rf module 301 is configured to perform receiving and transmitting processing of signals from the antenna to the baseband signal, for example, a low-frequency low-power signal sent by the baseband can be converted into a high-frequency high-power signal transmitted in the space, and a high-frequency weak signal received by the antenna can be converted into a low-frequency signal with a certain amplitude that can be processed by the base.

The baseband module 302 is configured to perform functions such as control of voice channels and radio frequencies, power management, voice coding, channel coding, modulation, and adaptive equalization. For example, the baseband module 302 may convert the sound signal into an electrical signal for processing, so that the signal is transmitted in a channel and is received correctly at the receiving end. The baseband module 302 includes the above-described baseband chip 200, which is a core part of the terminal device.

The power management module 303 is configured to distribute power to the internal units, and adjust voltage (or current) of each unit as needed to reduce power consumption of each unit.

Peripherals 304, which may include an LCD, a keyboard, a housing, a camera, etc. The peripheral included in the terminal device is not limited in the embodiment of the present application.

The software 305, generally includes four major components, an operating system, drivers, middleware, and applications. The operating system of the terminal device is a computer program for managing and controlling hardware and software resources of the terminal device, and is the most basic system software directly running on the bare computer, and any other software must be supported by the operating system to run, for example, running of various application programs. The operating system of the terminal device may include an IOS operating system of apple, an Android open source operating system of google, a Symbian operating system of saiban, a WebOS operating system of hewlett packard, an open source MeeGo operating system, a microsoft Windows operating system, and the like. A related program for enabling the hardware of the terminal device to be recognized by a computer or the like and to function normally is driven. Middleware is software that sits between the operating system and applications.

It is understood that fig. 3 is only an exemplary illustration, in practical applications, the terminal device 300 may include more or less components than those shown in fig. 3, and the structure shown in fig. 3 does not set any limit to the terminal device provided in the embodiments of the present application.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In order to solve the problem that in the background art, beam forming gain in the existing test scheme causes interference to an error of an RSRP measured by a baseband of a test machine, and the error of a determined RSRP measurement value is inaccurate, the embodiment of the application provides a measurement method which can eliminate the interference caused by the beam forming gain to a test result, so as to obtain an error of a more accurate baseband measurement value and improve calibration accuracy.

With reference to fig. 1 to fig. 3, as shown in fig. 4, the measurement method provided by the embodiment of the present application may include S401 to S404.

S401, detecting and measuring a Reference Signal Received Power (RSRP) measured value of the millimeter wave signal by the measuring equipment.

Illustratively, the measuring millimeter wave signal is emitted by the transmitting antenna shown in fig. 1, and the frequency of the millimeter wave is greater than 6 GHz.

Illustratively, the RSRP measurement is RSRP with beamforming gain. When the measuring device detects and measures the RSRP of the millimeter wave, on one hand, the measurement scheme has a beamforming gain, and on the other hand, the measurement device has an error, so that the RSRP measurement value includes an error value of the beamforming gain and the baseband measurement.

S402, calculating and measuring the signal arrival angle AoA of the millimeter wave signal.

The signal angle of arrival AoA is the angle at which the millimeter wave beam arrives.

For example, calculating the signal angle of arrival AoA of the measured millimeter wave signal may include: and calculating the AoA of the millimeter wave signal according to the RSRP value of the millimeter wave signal detected by the measuring equipment. For example, the AoA of the millimeter wave beam may be calculated by using a multi-signal classification MUSIC algorithm according to the RSRP measurement value, which is specifically referred to in the prior art and will not be described herein. The embodiment of the present application is not limited to a specific method for calculating the signal arrival angle AoA of the millimeter wave signal, and is only an example here.

And S403, searching a pre-configured database according to the AoA, and acquiring a beam forming gain reference value corresponding to the AoA.

Wherein the database comprises at least one AoA and beamforming gain reference values corresponding to each of the at least one AoA.

The reference value of the beamforming gain refers to a value of the beamforming gain corresponding to AoA of the millimeter wave beam signal when the distance between the transmitting antenna and the center position of the radio frequency antenna of the measuring device is a certain distance.

For example, a beamforming gain reference value corresponding to an AoA may be obtained from at least two RSRP measurement values detected at the AoA and an RSRP real value, which may be measured by a signal analyzer connected to a 0dBi omni-directional antenna.

The specific manner of obtaining the beamforming gain reference value corresponding to an AoA according to at least two RSRP measurement values and RSRP true values detected at the AoA may include the following steps S403a-S403 c.

S403a, detecting at least two RSRP measurement values at the AoA.

Illustratively, the at least two RSRP measurement values are measured by at least two measurement devices of the same model as the measurement devices described above. For example, when the measurement device is a baseband chip, at least two RSRP measurement values are measured by at least two baseband chips of the same type as the baseband chip. It can be understood that, in the embodiment of the present application, the purpose of performing multiple measurements by using multiple baseband chips is to eliminate the influence of a single baseband chip, so as to obtain a more accurate reference value of beamforming gain.

As shown in FIG. 5, the measuring device detects and measures the RSRP measurement value of the millimeter wave signal at the point A, which is recorded as RSRP_AThe point a may be any position, and after the point a is determined, the distance between the transmitting antenna and the central position of the rf antenna of the measuring device is determined. It will be appreciated that the first position satisfies the distance condition of the far field.

S403b, the true value of RSRP is detected in AoA.

Illustratively, the RSRP true value may be measured by a signal analyzer connected to a 0dBi omni-directional antenna.

As shown in fig. 6, the 0dBi omnidirectional antenna can be connected to a signal analyzer to measure the true value of RSRP received at point a, which is recorded as RSRP_A'Due to the characteristics of the 0dBi omni-directional antenna, its measured RSRP value does not contain beamforming gain.

It should be noted that the center of the sphere of the 0dBi omnidirectional antenna is aligned with the center of the rf antenna of the measuring device. As shown in fig. 7, the center of the sphere of the 0dBi omni-directional antenna and the center position of the measuring device radio frequency antenna are aligned at point a.

It can be appreciated that when the distance between the transmitting antenna and the tester baseband rf center is constant, the RSRP value measured by the 0dBi omni-directional antenna can remain constant when the incidence angle of the millimeter wave beam is different.

And S403c, obtaining a beamforming gain reference value corresponding to the AoA according to the at least two RSRP measurement values and the RSRP real value.

For example, the at least two RSRP measurement values may be respectively subtracted from the RSRP true value to obtain at least two beamforming gain values, and then the at least two beamforming gain values are averaged to obtain the beamforming gain reference value corresponding to the AoA. For example, when the signal arrival angle of the millimeter wave signal is measured as AoA, the corresponding reference value of the beamforming gain is

Wherein n is the number of the measuring devices,

RSRP measurement values detected at point a for the ith measurement device.

It is understood that the above steps S303a-S303c only obtain the reference value of the beamforming gain corresponding to one signal angle of arrival AoA, and the reference value of the beamforming gain corresponding to other signal angles of arrival may be obtained by the same method as described above, and the obtained reference values of the beamforming gain corresponding to different signal angles of arrival are stored in the database.

It should be noted that the accuracy of the signal arrival angle AoA stored in the database is not limited in the embodiment of the present application, and in practical applications, the accuracy of the signal arrival angle may be set according to different requirements of manufacturers, and optionally, the accuracy of the signal arrival angle may be finer, for example, the accuracy of the signal arrival angle may be 0.5 degrees or 1 degree.

For example, the searching the preconfigured database according to the AoA, and the obtaining the reference value of the beamforming gain corresponding to the AoA may include: and searching whether the AoA same as the current AoA exists in a pre-configured database, and if so, determining the beamforming gain corresponding to the AoA in the database as a beamforming gain reference value corresponding to the current AoA. The embodiment of the present application does not limit a specific method for obtaining the beamforming gain reference value corresponding to the AoA, and is only an exemplary description here.

And S404, calculating the RSRP calibration value of the millimeter wave signal according to the RSRP measurement value and the beam forming gain reference value corresponding to the AoA.

Wherein the RSRP calibration value is the RSRP excluding the beam forming gain.

For example, the calculating an RSRP calibration value of the millimeter wave signal according to the RSRP measurement value and the beamforming gain reference value corresponding to the AoA may include: and calculating a difference value according to the RSRP measurement value and the beam forming gain reference value, wherein the difference value is the RSRP calibration value.

It can be understood that the RSRP calibration value is obtained by subtracting the reference value of the beamforming gain corresponding to the signal arrival angle of the millimeter-wave signal from the RSRP measurement value containing the beamforming gain, and therefore, the RSRP calibration value does not contain the beamforming gain caused by the measurement scheme any more, and can eliminate the interference of the beamforming gain on the test result.

According to the measuring method provided by the embodiment of the application, a Reference Signal Received Power (RSRP) measured value of a millimeter wave signal is detected and measured through measuring equipment; calculating the signal arrival angle AoA of the measured millimeter wave signal; searching a pre-configured database according to the AoA, and acquiring a beam forming gain reference value corresponding to the AoA; and calculating the RSRP calibration value of the millimeter wave signal according to the RSRP measurement value and the beam forming gain reference value corresponding to the AoA. In the measurement method in the embodiment of the application, the RSRP calibration value without the beamforming gain can be obtained by subtracting the reference value of the beamforming gain corresponding to the signal arrival angle of the millimeter wave beam signal from the RSRP measurement value with the beamforming gain measured in the baseband, so that the influence of the baseband beamforming gain on the test scheme is eliminated.

The embodiment of the present application further provides a measurement method, as shown in fig. 8, the method further includes a step S405 after the step S404.

And S405, calculating the error of the RSRP measured value detected by the measuring equipment according to the RSRP calibration value and the RSRP real value.

For example, the calculating the error of the RSRP measurement value detected by the measurement device according to the RSRP calibration value and the RSRP true value may include: and calculating the difference value of the RSRP calibration value and the RSRP true value, wherein the difference value is the error of the RSRP measurement value detected by the measuring equipment.

It should be noted that, the RSRP true value in the embodiment of the present application is measured by a measurement device connected to the 0dBi omnidirectional antenna, and due to the characteristic of the 0dBi omnidirectional antenna, the RSRP true value measured by the RSRP true value does not include a beamforming gain, and compared with an error in the prior art that a baseband measurement value is obtained by using a reference antenna with a known gain, the RSRP measured by the embodiment of the present application using the 0dBi omnidirectional antenna can eliminate an influence on the error caused by the beamforming gain of the reference antenna in the prior art.

It can be understood that, since the RSRP calibration value does not include the beamforming gain, the RSRP calibration value excludes the beamforming gain of the measurement device in the test scenario, and the RSRP true value is the RSRP that does not include the beamforming gain and is measured by the signal analyzer connected to the 0dBi omnidirectional antenna, the error of the RSRP measurement value obtained by subtracting the difference of the RSRP calibration value from the RSRP true value is more accurate than the error determined in the prior art directly from the RSRP measured by the baseband and the RSRP measured by the reference antenna with known gain, in order to exclude the error after the beamforming gains of the measurement device and the reference antenna.

For example, the error in the RSRP measurement obtained as described above may be used to calibrate the measurement device. For example, when the measurement device is a baseband chip, the baseband chip may add a port for an external device (e.g., a calibration device) to call the RSRP calibration value excluding the beamforming gain obtained from the baseband chip from the outside, compare the RSRP calibration value with the actual RSRP value, determine an error of the RSRP measurement value measured by the baseband chip, and calibrate the measurement device according to the error of the measurement value. The port may only function to call the baseband RSRP calibration value.

According to the measuring method provided by the embodiment of the application, a Reference Signal Received Power (RSRP) measured value of a millimeter wave signal is detected and measured through measuring equipment; calculating the signal arrival angle AoA of the measured millimeter wave signal; searching a pre-configured database according to the AoA, and acquiring a beam forming gain reference value corresponding to the AoA; calculating an RSRP calibration value of the millimeter wave signal according to the RSRP measurement value and the beamforming gain reference value corresponding to the AoA; and acquiring the error of the RSRP measurement value detected by the measuring equipment according to the RSRP calibration value and the RSRP real value. According to the measurement method in the embodiment of the application, the RSRP calibration value without the beam forming gain can be obtained by subtracting the reference value of the beam forming gain corresponding to the signal arrival angle of the millimeter wave beam signal from the RSRP measurement value with the beam forming gain measured by the baseband, and more accurate RSRP measurement value error can be obtained according to the RSRP calibration value and the RSRP real value, the error eliminates the influence of the baseband beam forming gain and the reference antenna beam forming gain on a test scheme, and the calibration accuracy is improved.

The above description has mainly introduced the scheme provided in the embodiments of the present application from the perspective of method steps. It will be appreciated that the measuring device comprises corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above-described functions. Those of skill in the art will readily appreciate that the present application is capable of implementing the exemplary modules and algorithm steps described in connection with the embodiments disclosed herein in a combination of hardware and computer software. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the measurement device may be divided into the functional modules according to the method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

In the case of dividing each functional module according to each function, an embodiment of the present application further provides a measurement apparatus, as shown in fig. 9, where the measurement apparatus 900 includes: a detection unit 901, a processing unit 902 and an acquisition unit 903. The detection unit 901 may be used to support the measurement apparatus 900 to perform S401 in fig. 4; the processing unit 902 may be configured to support the measurement apparatus 900 to perform S402, S404 in fig. 4, or S405 in fig. 8; the obtaining unit 903 is used to support the measuring apparatus 900 to execute S403 in fig. 4. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

In the case of using an integrated unit, the embodiment of the present application further provides a measurement apparatus, as shown in fig. 10, where the measurement apparatus 1000 includes: a storage module 1001 and a processing module 1002. The processing module 1002 is used to control and manage the actions of the measurement device, e.g., the processing module 1002 is used to support the measurement device to perform S401-S404 in fig. 4, or S401-S405 in fig. 8, and/or other processes for the techniques described herein. A storage module 1001 for storing computer program code and data.

The embodiment of the present application further provides a device, which exists in a product form of a chip, and the structure of the device includes a processor and an interface circuit, where the processor may obtain a protocol packet sent by another router through the interface circuit, and optionally, the device may further include a memory, where the memory is configured to be coupled to the processor and store necessary program instructions and data of the device, and the processor is configured to execute the program instructions stored in the memory, so that the device performs a function of the packet anti-attack device in the foregoing method. Alternatively, the memory may be a storage module in the chip, such as a register, a cache, and the like, and the storage module may also be a storage module located outside the chip, such as a ROM or other types of static storage devices that can store static information and instructions, a RAM, and the like.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Erasable Programmable read-only Memory (EPROM), electrically Erasable Programmable read-only Memory (EEPROM), registers, a hard disk, a removable disk, a compact disc read-only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.

Those skilled in the art will recognize that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

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

Claims

1. A method of measurement, the method comprising:

the measuring equipment detects and measures a Reference Signal Received Power (RSRP) measured value of the millimeter wave signal;

calculating a signal arrival angle AoA of the measured millimeter wave signal;

searching a pre-configured database according to the AoA, and acquiring a beam forming gain reference value corresponding to the AoA; wherein the database comprises at least one AoA and beamforming gain reference values corresponding to each of the at least one AoA;

and calculating the RSRP calibration value of the measuring millimeter wave signal according to the RSRP measurement value and the beam forming gain reference value corresponding to the AoA.

2. The method of claim 1, wherein the reference value of the beamforming gain for an AoA is obtained from at least two RSRP measurement values and RSRP true values detected at the AoA; wherein the true value of RSRP is measured by an instrument connected with a 0dBi omnidirectional antenna.

3. The measurement method according to claim 1 or 2, characterized in that the at least two RSRP measurement values are measured by at least two measurement devices of the same model as the measurement devices.

4. A method of measurement according to claim 2 or 3, characterized in that the center of the measuring device radio frequency antenna and the sphere center of the 0dBi omnidirectional antenna are aligned.

5. The measurement method according to any one of claims 1 to 4, characterized in that the method further comprises:

and calculating the error of the RSRP measured value detected by the measuring equipment according to the RSRP calibration value and the RSRP real value.

6. The measurement method according to any one of claims 1 to 5, wherein the calculating the signal angle of arrival AoA of the measurement millimeter wave signal comprises:

and calculating the AoA of the measuring millimeter wave signal according to the RSRP value of the measuring millimeter wave signal detected by the measuring equipment.

7. The measurement method according to any one of claims 1 to 6, wherein the measurement device is a baseband chip or a terminal device.

8. A measuring device, characterized in that the device comprises:

the detection unit is used for detecting a Reference Signal Received Power (RSRP) measured value of the millimeter wave signal;

the processing unit is used for calculating the signal arrival angle AoA of the millimeter wave signal;

the acquisition unit is used for searching a pre-configured database according to the AoA calculated by the processing unit and acquiring a beam forming gain reference value corresponding to the AoA; wherein the database comprises at least one AoA and beamforming gain reference values corresponding to each of the at least one AoA;

the processing unit is further configured to calculate an RSRP calibration value of the millimeter wave measurement signal according to the RSRP measurement value detected by the detecting unit and the beamforming gain reference value corresponding to the AoA acquired by the acquiring unit.

9. The measurement device of claim 8, wherein a beamforming gain reference value for an AoA is obtained from at least two RSRP measurement values and an RSRP true value detected at the AoA; wherein the true value of RSRP is measured by an instrument connected with a 0dBi omnidirectional antenna.

10. The measurement arrangement according to claim 8 or 9, wherein the at least two RSRP measurement values are detected by at least two measurement devices of the same model as the measurement devices.

11. A measuring device according to claim 9 or 10, characterized in that the center of the measuring equipment radio frequency antenna and the sphere center of the 0dBi omnidirectional antenna are aligned.

12. The measurement device according to any one of claims 8-11, wherein the processing unit is further configured to,

and calculating the error of the RSRP measured value detected by the detection unit according to the RSRP calibration value and the RSRP real value.

13. Measuring device according to any of claims 8-12, characterized in that the processing unit, in particular for,

and calculating the AoA of the measuring millimeter wave signal according to the RSRP value of the measuring millimeter wave signal detected by the detection unit.

14. A measuring device according to any of claims 8-13, characterized in that the measuring device is a baseband chip or a terminal equipment.

15. A communication device for use in a measurement apparatus, the device comprising a processor configured to couple to a memory, read instructions from the memory, and perform a measurement method according to any one of claims 1 to 7 in accordance with the instructions.

16. A computer storage medium having computer program code stored therein, which when run on a processor causes the processor to perform a measurement method according to any one of claims 1-7.