CN117040661A - Signal-to-noise ratio measuring method and device for frequency domain signal, electronic equipment and storage medium - Google Patents

Signal-to-noise ratio measuring method and device for frequency domain signal, electronic equipment and storage medium Download PDF

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Publication number
CN117040661A
CN117040661A CN202311146745.4A CN202311146745A CN117040661A CN 117040661 A CN117040661 A CN 117040661A CN 202311146745 A CN202311146745 A CN 202311146745A CN 117040661 A CN117040661 A CN 117040661A
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signal
frequency domain
noise ratio
target
domain signal
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陈艳霞
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Shanghai Silang Technology Co ltd
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Shanghai Silang Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The application discloses a signal-to-noise ratio measuring method and device of a frequency domain signal, electronic equipment and a storage medium. Comprising the following steps: acquiring a target frequency domain signal to be subjected to signal-to-noise ratio measurement; generating a local frequency domain reference signal based on the target frequency domain signal and a target cyclic shift, wherein the target cyclic shift is determined based on the current information type of uplink control information; acquiring a correlation value between the target frequency domain signal and the local frequency domain reference signal; and calculating the signal-to-noise ratio of the target frequency domain signal based on the correlation value, and detecting the effectiveness of the target frequency domain signal by utilizing the signal-to-noise ratio. The method provided by the embodiment of the application does not need to perform time-frequency domain transformation, does not need to additionally configure an idle window, ensures the resource utilization rate, improves the SNR estimation accuracy and improves the detection performance.

Description

Signal-to-noise ratio measuring method and device for frequency domain signal, electronic equipment and storage medium
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for measuring a signal-to-noise ratio of a frequency domain signal, an electronic device, and a storage medium.
Background
At present, the more common SNR measurement schemes include methods such as time domain signal-to-noise ratio measurement and frequency domain space window measurement. The time domain signal to noise ratio measurement scheme is to convert the frequency domain channel response into the time domain and then calculate the signal to noise ratio by selecting the noise path. The method has the defects that frequency spectrum leakage can occur in the time-frequency domain conversion process and inaccuracy of interference path judgment in the path selection process can cause deviation in signal-to-noise ratio calculation, thereby influencing detection performance. The other is frequency domain null window measurement, and noise measurement is performed in a null window agreed by the frequency domain. The method has the defects that a special empty window is required to be configured in a frequency domain for noise measurement, the resource utilization rate is reduced, and under the condition that the original resources are relatively tense, a plurality of empty windows cannot be configured for noise measurement, so that the accuracy of noise measurement is difficult to ensure.
Disclosure of Invention
In order to solve the technical problems or at least partially solve the technical problems, the application provides a signal-to-noise ratio measuring method, a device, electronic equipment and a storage medium of a frequency domain signal.
According to an aspect of an embodiment of the present application, there is provided a signal-to-noise ratio measurement method of a frequency domain signal, including:
acquiring a target frequency domain signal to be subjected to signal-to-noise ratio measurement;
generating a local frequency domain reference signal based on the target frequency domain signal and a target cyclic shift, wherein the target cyclic shift is determined based on the current information type of uplink control information;
acquiring a correlation value between the target frequency domain signal and the local frequency domain reference signal;
and calculating the signal-to-noise ratio of the target frequency domain signal based on the correlation value, and detecting the effectiveness of the target frequency domain signal by utilizing the signal-to-noise ratio.
Further, the obtaining the target frequency domain signal to be subjected to signal-to-noise ratio measurement includes:
acquiring an original frequency domain signal received by a base station through an uplink control channel;
and performing resource de-mapping on the original frequency domain signal to obtain the target frequency domain signal.
Further, the generating a local frequency domain reference signal based on the target frequency domain signal and a target cyclic shift includes:
obtaining preset configuration information, wherein the preset configuration information comprises: a correspondence between cyclic shift and a preset information type of uplink control information;
acquiring an information type corresponding to the uplink control information currently, and acquiring a target cyclic shift corresponding to the information type from the configuration information;
the local frequency domain reference signal is generated based on the target frequency domain signal and the target cyclic shift.
Further, after obtaining the correlation value between the target frequency domain signal and the local frequency domain reference signal, the method further includes:
acquiring a plurality of antenna adjustment factors corresponding to all symbols in an uplink control channel;
taking the smallest antenna adjustment factor in the plurality of antenna adjustment factors as a reference value;
and aligning the correlation value by utilizing the reference value to obtain an aligned correlation value.
Further, the calculating the signal-to-noise ratio of the target frequency domain signal based on the correlation value includes:
calculating a correlation power value corresponding to each aligned correlation value, and determining a maximum correlation power value;
and calculating the signal to noise ratio by using the maximum correlation power value.
Further, the calculating the signal-to-noise ratio using the maximum correlation power value includes:
calculating each pair of target cyclic shifts by utilizing a plurality of idle windows to obtain a correlation value of each pair of target cyclic shifts;
taking the minimum correlation value in each pair of target cyclic shifts as a noise window;
and calculating noise power by using the noise window, and calculating the signal to noise ratio based on the maximum correlation power value and the noise window.
Further, the performing validity detection on the target frequency domain signal by using the signal-to-noise ratio includes:
comparing the signal-to-noise ratio with a preset signal-to-noise ratio to obtain a comparison result;
determining the target frequency domain signal as an effective signal under the condition that the signal-to-noise ratio is greater than or equal to the preset signal-to-noise ratio as the comparison result; or determining that the target frequency domain signal is an invalid signal under the condition that the signal ratio is smaller than the preset signal-to-noise ratio as the comparison result.
According to still another aspect of the embodiment of the present application, there is also provided a signal-to-noise ratio measurement apparatus for a frequency domain signal, including:
the acquisition module is used for acquiring a target frequency domain signal to be subjected to signal-to-noise ratio measurement;
the generation module is used for generating a local frequency domain reference signal based on the target frequency domain signal and a target cyclic shift, wherein the target cyclic shift is determined based on the current information type of the uplink control information;
the acquisition module is used for acquiring a correlation value between the target frequency domain signal and the local frequency domain reference signal;
and the measurement module is used for calculating the signal-to-noise ratio of the target frequency domain signal based on the correlation value and carrying out validity detection on the target frequency domain signal by utilizing the signal-to-noise ratio.
According to another aspect of the embodiments of the present application, there is also provided a storage medium including a stored program that performs the above steps when running.
According to another aspect of the embodiment of the present application, there is also provided an electronic device including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus; wherein: a memory for storing a computer program; and a processor for executing the steps of the method by running a program stored on the memory.
Embodiments of the present application also provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the steps of the above method.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: the method provided by the embodiment of the application does not need to perform time-frequency domain transformation, does not need to additionally configure an idle window, ensures the resource utilization rate, improves the SNR estimation accuracy and improves the detection performance.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a flowchart of a signal-to-noise ratio measurement method of a frequency domain signal according to an embodiment of the present application;
fig. 2 is a block diagram of a signal-to-noise ratio measurement device for a frequency domain signal according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments, illustrative embodiments of the present application and descriptions thereof are used to explain the present application and do not constitute undue limitations of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another similar entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiment of the application provides a signal-to-noise ratio measuring method and device of a frequency domain signal, electronic equipment and a storage medium. The method provided by the embodiment of the application can be applied to any needed electronic equipment, for example, the electronic equipment can be a server, a terminal and the like, is not particularly limited, and is convenient to describe and is called as the electronic equipment for short hereinafter.
According to an aspect of the embodiment of the application, a method embodiment of a signal-to-noise ratio measurement method of a frequency domain signal is provided. Fig. 1 is a flowchart of a signal-to-noise ratio measurement method of a frequency domain signal according to an embodiment of the present application, as shown in fig. 1, where the method includes:
step S11, obtaining a target frequency domain signal to be subjected to signal-to-noise ratio measurement.
In the embodiment of the application, the acquisition of the target frequency domain signal to be subjected to signal-to-noise ratio measurement comprises the following steps of A1-A2:
step A1, the original frequency domain signal received by the base station through the uplink control channel is obtained.
And step A2, performing resource de-mapping on the original frequency domain signal to obtain a target frequency domain signal.
In the embodiment of the application, the base station receives the original frequency domain signal (PUCCH format0 format) through the uplink control channel PUCCH, and then performs the resource decomposition on the original frequency domain signalMapping to obtain a target frequency domain signal, which is expressed as0≤n<M ZC ，0≤l<N l ，0≤q<N r Wherein M is ZC For the sequence length, that is, the number of REs occupied on each symbol, since PUCCH format0 occupies one RB in the frequency domain, M ZC Fixed as 12; n (N) l The maximum symbol number occupied by the PUCCH format0 can be 1 or 2, and is configured by signaling; n (N) r Is the maximum number of receive antennas.
Step S12, generating a local frequency domain reference signal based on the target frequency domain signal and the target cyclic shift, wherein the target cyclic shift is determined based on the current information type of the uplink control information.
In an embodiment of the present application, generating a local frequency domain reference signal based on a target frequency domain signal and a target cyclic shift includes the steps of:
step B1, acquiring preset configuration information, wherein the preset configuration information comprises the following steps: the corresponding relation between the cyclic shift and the preset information type of the uplink control information.
In the embodiment of the application, the preset configuration information is as follows:
wherein,for cyclic shift, UCI is uplink control information, and UCI information types are: the UCI only has positive SR, the UCI only has 1 bit HARQ-ACK, the UCI only has 1 bit HARQ-ACK+positive SR, the UCI only has 2 bits HARQ-ACK, and the UCI is 2 bits HARQ-ACK+positive SR.
And step B2, acquiring the information type corresponding to the uplink control information currently, and acquiring the target cyclic shift corresponding to the information type from the configuration information.
And step B3, generating a local frequency domain reference signal based on the target frequency domain signal and the target cyclic shift.
In the embodiment of the application, the target cyclic shift is acquired from the preset configuration information according to the information type corresponding to the uplink control information,wherein N1 is the number of possible target cyclic shifts corresponding to the information type currently corresponding to the uplink control information:
in the embodiment of the application, the target frequency domain signal is used forAnd a target cyclic shift m cs (im cs ) Generating a local frequency domain reference signal->Wherein N is l The number of symbols occupied by PUCCH format0 may be 1 or 2, < >>
Step S13, a correlation value between the target frequency domain signal and the local frequency domain reference signal is obtained.
In the embodiment of the present application, a formula for calculating a correlation value between a target frequency domain signal and a local frequency domain reference signal is as follows:
in an embodiment of the present application, after obtaining the correlation value between the target frequency domain signal and the local frequency domain reference signal, the method further includes the following procedures: acquiring a plurality of antenna adjustment factors corresponding to all symbols in an uplink control channel; the smallest antenna adjustment factor among the plurality of antenna adjustment factors is used as a reference value; and aligning the correlation values by using the reference value to obtain aligned correlation values.
In the embodiment of the present application, the process of aligning the correlation value using the reference value is as follows:
wherein L is the symbol sequence number, q is the receiving antenna sequence number, L is the symbol sequence number set occupied by the current channel, f time,agc (l, q) is the time domain AGC factor corresponding to the received data on the q-th receive antenna of the first symbol, f FFT (l, q) is the FFT factor corresponding to the received data on the qth receive antenna of the ith symbol, f all (l, q) is f time,agc (l, q) and f FFT Sum of (l, q), delta fall (l, q) is f corresponding to the received data on the q-th receiving antenna of the first symbol all (l, q) and a reference factor->Difference between->Is the aligned correlation value on the qth receive antenna of the ith symbol.
And S14, calculating the signal-to-noise ratio of the target frequency domain signal based on the correlation value, and detecting the effectiveness of the target frequency domain signal by utilizing the signal-to-noise ratio.
In the embodiment of the application, the signal-to-noise ratio of the target frequency domain signal is calculated based on the correlation value, and the method comprises the following steps of C1-C2:
and step C1, calculating a correlation power value corresponding to each aligned correlation value, and determining a maximum correlation power value.
In the embodiment of the application, the correlation power value P is calculated R (i 1 ),0≤i 1 ＜N 1 The calculation formula of the correlation power value is as follows:
then find out the maximum value of the correlation power from the correlation power valuesThe search process is as follows:
and step C2, calculating the signal to noise ratio by using the maximum correlation power value.
In the embodiment of the application, the signal to noise ratio is calculated by using the maximum correlation power value, which comprises the following steps of C201-C203:
step C201, calculating each pair of target cyclic shifts by using a plurality of idle windows to obtain a correlation value of each pair of target cyclic shifts.
Step C202, the least correlation value in each pair of target cyclic shifts is used as a noise window.
Step C203, the noise power is calculated by using the noise window, and the signal-to-noise ratio is calculated based on the maximum correlation power value and the noise window.
In the embodiment of the application, the formula for calculating the signal-to-noise ratio SNR is as follows:
the noise power P N Is calculated based on 6 idle windows, since all m cs Are all allocated in pairs, each pair m cs At least one of them is idle, and thus for allAnd calculating the correlation value, and finding out the noise window with smaller correlation value in each pair of target cyclic shifts to obtain 6 noise windows.
By comparison, the following will be performedThe mode of using the ring shift with smaller correlation value as noise window makes the noise power P N The method can calculate based on 6 idle windows, and greatly improves the accuracy of noise power estimation. The time-frequency domain transformation is not needed, the additional configuration of an idle window is not needed, the resource utilization rate is ensured, the signal-to-noise ratio measurement accuracy is improved, and the detection performance is improved.
In the embodiment of the application, the validity detection of the target frequency domain signal by utilizing the signal-to-noise ratio comprises the following steps: comparing the signal-to-noise ratio with a preset signal-to-noise ratio to obtain a comparison result; under the condition that the signal-to-noise ratio is larger than or equal to the preset signal-to-noise ratio as a comparison result, determining the target frequency domain signal as an effective signal; or determining the target frequency domain signal as an invalid signal under the condition that the signal ratio is smaller than the preset signal-to-noise ratio as a comparison result.
In the embodiment of the application, the method further comprises the following steps: according toThe UCI information bit demapping is carried out, and the mapping rule is as follows:
fig. 2 is a block diagram of a signal-to-noise ratio measurement device for a frequency domain signal according to an embodiment of the present application, where the device may be implemented as part or all of an electronic device by software, hardware, or a combination of both. As shown in fig. 2, the apparatus includes:
an acquisition module 21, configured to acquire a target frequency domain signal to be subjected to signal-to-noise ratio measurement;
a generating module 22, configured to generate a local frequency domain reference signal based on the target frequency domain signal and a target cyclic shift, where the target cyclic shift is determined based on a current information type of the uplink control information;
an obtaining module 23, configured to obtain a correlation value between the target frequency domain signal and the local frequency domain reference signal;
the measurement module 24 is configured to calculate a signal-to-noise ratio of the target frequency domain signal based on the correlation value, and perform validity detection on the target frequency domain signal using the signal-to-noise ratio.
In the embodiment of the present application, the acquisition module 21 is configured to acquire an original frequency domain signal received by a base station through an uplink control channel; and performing resource de-mapping on the original frequency domain signal to obtain a target frequency domain signal.
In the embodiment of the present application, the generating module 22 is configured to obtain preset configuration information, where the preset configuration information includes: a correspondence between cyclic shift and a preset information type of uplink control information; acquiring an information type corresponding to the uplink control information currently, and acquiring a target cyclic shift corresponding to the information type from configuration information; a local frequency domain reference signal is generated based on the target frequency domain signal and the target cyclic shift.
In an embodiment of the present application, a signal-to-noise ratio measurement device for a frequency domain signal further includes: a calculation module, configured to obtain a plurality of antenna adjustment factors corresponding to all symbols in an uplink control channel; taking the smallest antenna adjustment factor in the plurality of antenna adjustment factors as a reference value; and aligning the correlation values by using the reference value to obtain aligned correlation values.
In the embodiment of the present application, the measurement module 24 is configured to calculate a correlation power value corresponding to each aligned correlation value, and determine a maximum correlation power value; and calculating the signal to noise ratio by using the maximum correlation power value.
In the embodiment of the present application, the measurement module 24 is configured to calculate each pair of target cyclic shifts by using a plurality of idle windows, so as to obtain a correlation value of each pair of target cyclic shifts; the correlation value in each pair of target cyclic shifts is the smallest as a noise window; the noise power is calculated using the noise window and the signal to noise ratio is calculated based on the maximum correlation power value and the noise window.
In the embodiment of the present application, the measurement module 24 is configured to compare the signal-to-noise ratio with a preset signal-to-noise ratio to obtain a comparison result; under the condition that the signal-to-noise ratio is larger than or equal to the preset signal-to-noise ratio as a comparison result, determining the target frequency domain signal as an effective signal; or determining the target frequency domain signal as an invalid signal under the condition that the signal ratio is smaller than the preset signal-to-noise ratio as a comparison result.
The embodiment of the application also provides an electronic device, as shown in fig. 3, the electronic device may include: the device comprises a processor 1501, a communication interface 1502, a memory 1503 and a communication bus 1504, wherein the processor 1501, the communication interface 1502 and the memory 1503 are in communication with each other through the communication bus 1504.
A memory 1503 for storing a computer program;
the processor 1501, when executing the computer program stored in the memory 1503, implements the steps of the above embodiments.
The communication bus mentioned by the above terminal may be a peripheral component interconnect standard (Peripheral Component Interconnect, abbreviated as PCI) bus or an extended industry standard architecture (Extended Industry Standard Architecture, abbreviated as EISA) bus, etc. The communication bus may be classified as an address bus, a data bus, a control bus, or the like. For ease of illustration, the figures are shown with only one bold line, but not with only one bus or one type of bus.
The communication interface is used for communication between the terminal and other devices.
The memory may include random access memory (Random Access Memory, RAM) or non-volatile memory (non-volatile memory), such as at least one disk memory. Optionally, the memory may also be at least one memory device located remotely from the aforementioned processor.
The processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but also digital signal processors (Digital Signal Processing, DSP for short), application specific integrated circuits (Application Specific Integrated Circuit, ASIC for short), field-programmable gate arrays (Field-Programmable Gate Array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
In yet another embodiment of the present application, a computer readable storage medium is provided, where instructions are stored, which when executed on a computer, cause the computer to perform the signal-to-noise ratio measurement method of the frequency domain signal according to any one of the above embodiments.
In a further embodiment of the present application, a computer program product comprising instructions, which when run on a computer, causes the computer to perform the signal-to-noise ratio measurement method of a frequency domain signal as described in any of the above embodiments is also provided.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk), etc.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A signal-to-noise ratio measurement method for a frequency domain signal, comprising:
acquiring a target frequency domain signal to be subjected to signal-to-noise ratio measurement;
generating a local frequency domain reference signal based on the target frequency domain signal and a target cyclic shift, wherein the target cyclic shift is determined based on the current information type of uplink control information;
acquiring a correlation value between the target frequency domain signal and the local frequency domain reference signal;
and calculating the signal-to-noise ratio of the target frequency domain signal based on the correlation value, and detecting the effectiveness of the target frequency domain signal by utilizing the signal-to-noise ratio.
2. The method of claim 1, wherein the obtaining the target frequency domain signal for which the signal-to-noise ratio measurement is to be performed comprises:
acquiring an original frequency domain signal received by a base station through an uplink control channel;
and performing resource de-mapping on the original frequency domain signal to obtain the target frequency domain signal.
3. The method of claim 1, wherein the generating a local frequency domain reference signal based on the target frequency domain signal and a target cyclic shift comprises:
obtaining preset configuration information, wherein the preset configuration information comprises: a correspondence between cyclic shift and a preset information type of uplink control information;
acquiring an information type corresponding to the uplink control information currently, and acquiring a target cyclic shift corresponding to the information type from the configuration information;
the local frequency domain reference signal is generated based on the target frequency domain signal and the target cyclic shift.
4. The method of claim 1, wherein after obtaining the correlation value between the target frequency domain signal and the local frequency domain reference signal, the method further comprises:
acquiring a plurality of antenna adjustment factors corresponding to all symbols in an uplink control channel;
taking the smallest antenna adjustment factor in the plurality of antenna adjustment factors as a reference value;
and aligning the correlation value by utilizing the reference value to obtain an aligned correlation value.
5. The method of claim 4, wherein said calculating a signal-to-noise ratio of said target frequency domain signal based on said correlation value comprises:
calculating a correlation power value corresponding to each aligned correlation value, and determining a maximum correlation power value;
and calculating the signal to noise ratio by using the maximum correlation power value.
6. The method of claim 5, wherein said calculating said signal-to-noise ratio using said maximum correlation power value comprises:
calculating each pair of target cyclic shifts by utilizing a plurality of idle windows to obtain a correlation value of each pair of target cyclic shifts;
taking the minimum correlation value in each pair of target cyclic shifts as a noise window;
and calculating noise power by using the noise window, and calculating the signal to noise ratio based on the maximum correlation power value and the noise window.
7. The method of claim 1, wherein said utilizing said signal-to-noise ratio for validity detection of said target frequency domain signal comprises:
comparing the signal-to-noise ratio with a preset signal-to-noise ratio to obtain a comparison result;
determining the target frequency domain signal as an effective signal under the condition that the signal-to-noise ratio is greater than or equal to the preset signal-to-noise ratio as the comparison result; or determining that the target frequency domain signal is an invalid signal under the condition that the signal ratio is smaller than the preset signal-to-noise ratio as the comparison result.
8. A signal-to-noise ratio measurement apparatus for a frequency domain signal, comprising:
the acquisition module is used for acquiring a target frequency domain signal to be subjected to signal-to-noise ratio measurement;
the generation module is used for generating a local frequency domain reference signal based on the target frequency domain signal and a target cyclic shift, wherein the target cyclic shift is determined based on the current information type of the uplink control information;
the acquisition module is used for acquiring a correlation value between the target frequency domain signal and the local frequency domain reference signal;
and the measurement module is used for calculating the signal-to-noise ratio of the target frequency domain signal based on the correlation value and carrying out validity detection on the target frequency domain signal by utilizing the signal-to-noise ratio.
9. A storage medium comprising a stored program, wherein the program when run performs the method steps of any of the preceding claims 1 to 7.
10. The electronic equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus; wherein:
a memory for storing a computer program;
a processor for executing the method steps of any one of claims 1 to 7 by running a program stored on a memory.
CN202311146745.4A 2023-09-06 2023-09-06 Signal-to-noise ratio measuring method and device for frequency domain signal, electronic equipment and storage medium Pending CN117040661A (en)

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