CN116156611B - SINR estimation method, device, system and storage medium for PUCCH - Google Patents
SINR estimation method, device, system and storage medium for PUCCH Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
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- H04W52/146—Uplink power control
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- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
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- H—ELECTRICITY
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- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
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Abstract
The application relates to a method, a device, a system and a storage medium for estimating SINR of a PUCCH channel: according to the pilot signal uploaded by the target user equipment in the PUCCH channel, obtaining information of the pilot signal, wherein the information of the pilot signal comprises: delay value, equivalent power and noise power; acquiring a power adjustment coefficient corresponding to the time delay value, and acquiring a first power adjustment value for correcting noise power and equivalent power according to the power adjustment coefficient and the equivalent power; determining a resource block where the target user equipment is located, acquiring a second power adjustment value of signals of other user equipment on the resource block, acquiring a total power adjustment value according to the first power adjustment value and the second power adjustment value, and acquiring target noise power of a pilot signal of the target user equipment according to the noise power and the total power adjustment value; and calculating the first SINR of the pilot signal according to the target noise power, solving the problem that the SINR estimation of the PUCCH cannot be considered in both accuracy and convenience, and improving the accuracy and convenience of the SINR estimation of the PUCCH.
Description
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a method, an apparatus, a system, and a storage medium for estimating SINR of a PUCCH channel.
Background
The PUCCH (Physical Uplink Control Channel ) frequency domain pilot signal can be used to estimate the PUCCH channel equivalent power value, and in the case of high signal-to-noise ratio, the result of estimating the equivalent power value of the PUCCH frequency domain pilot signal is greatly affected by the delay, which results in inaccurate estimated PUCCH channel SINR. If the PUCCH channel is power-controlled based on the estimated inaccurate SINR (Signal to Interference plus Noise Ratio, signal-to-interference-plus-noise ratio), the power of the corresponding PUCCH channel is boosted to increase the SINR, and the actual signal power of the PUCCH channel is maximized, but the SINR is not improved. This affects not only the performance of this PUCCH channel, but also other PUCCH channels.
In the related art, when the SINR of the PUCCH channel is optimized, the frequency domain data of the PUCCH channel needs to be transformed to the time domain to obtain the maximum value of the PUCCH time domain signal power and the gradient value of the maximum value and two points adjacent thereto. Alternatively, the SINR of the PUCCH channel is estimated by interpolation operation. In the related art, the calculated amount of SINR estimation of the PUCCH channel is large, and the problem that accuracy and convenience cannot be achieved is solved.
Aiming at the problem that the SINR estimation of the PUCCH channel in the related technology cannot achieve both accuracy and convenience, no effective solution is proposed at present.
Disclosure of Invention
In this embodiment, a method, an apparatus, a system, and a storage medium for estimating SINR of a PUCCH channel are provided, so as to solve the problem that the SINR estimation of a PUCCH channel in the related art cannot achieve both accuracy and convenience.
In a first aspect, in this embodiment, there is provided a method for estimating SINR of a PUCCH channel, including:
according to a pilot signal uploaded by target user equipment in a PUCCH channel, acquiring information of the pilot signal, wherein the information of the pilot signal comprises: delay value, equivalent power and noise power;
acquiring a power adjustment coefficient corresponding to the time delay value, and acquiring a first power adjustment value for correcting the noise power and the equivalent power according to the power adjustment coefficient and the equivalent power;
determining a resource block where the target user equipment is located, respectively obtaining second power adjustment values of signals of other user equipment on the resource block, obtaining a total power adjustment value on the resource block according to the first power adjustment value of a pilot signal of the target user equipment and the second power adjustment value of the pilot signal of the other user equipment, and obtaining target noise powers of the pilot signals of the target user equipment and the other user equipment on the resource block according to the noise power and the total power adjustment value;
and calculating the first SINR of the pilot signal according to the target noise power, the equivalent power and the noise power.
In some of these embodiments, prior to obtaining the power adjustment coefficient corresponding to the delay value, the method includes:
locally generating a first signal of a pilot signal of a test user equipment, wherein the first signal has no time delay;
acquiring a second signal output after the pilot signal of the test user equipment is transmitted through a channel, wherein the second signal has time delay;
and obtaining a power adjustment coefficient under a corresponding time delay value according to the similarity of the first signal and the second signal.
In some of these embodiments, obtaining the delay value, the equivalent power, and the noise power of the pilot signal of the target user equipment includes:
determining an antenna that receives a pilot signal of the target user equipment;
and acquiring a time delay value, equivalent power and noise power of the pilot signal received by the antenna within preset time.
In some of these embodiments, obtaining a first power adjustment value for correcting the noise power and the equivalent power according to the power adjustment coefficient and the equivalent power includes:
multiplying the power adjustment coefficient by the equivalent power to obtain the first power adjustment value.
In some of these embodiments, multiplying the power adjustment factor by the equivalent power to obtain the first power adjustment value includes:
；
wherein ,for the first power adjustment value, s is a preset length of time,/for a first power adjustment value>For the total number of antennas receiving the pilot signal of the target user equipment, i is the index of antennas receiving the pilot signal of the target user equipment, j is the index of the target user,/>For the equivalent power, +.>And adjusting a coefficient for the power.
In some embodiments, obtaining the target noise power of the pilot signal of the target ue according to the noise power and the total power adjustment value includes:
and subtracting the total power adjustment value from the noise power to obtain the target noise power.
In some of these embodiments, subtracting the total power adjustment value from the noise power yields the target noise power, comprising:
；
where den is the target noise power,for the noise power, +.>For the total power adjustment value s is a preset length of time,/for the total power adjustment value>For the total number of antennas receiving the pilot signal of the target user equipment, i is the index of antennas receiving the pilot signal of the target user equipment, j is the index of the target user, and m is the total number of user equipment of the resource block where the target user equipment is located.
In some of these embodiments, calculating the first SINR of the pilot signal from the target noise power includes:
obtaining an SINR correction value of a pilot signal of the target user according to the target noise power, the equivalent power and the noise power;
obtaining a second SINR according to the equivalent power and the noise power of the pilot signal of the target user;
and obtaining the first SINR of the pilot signal based on the second SINR and the SINR correction value.
In some of these embodiments,
；
；
；
wherein ,for the SINR correction value of the pilot signal, +.>For the power of the noise to be mentioned,for the power adjustment factor,/->For the equivalent power, den is the target noise power,for the second SINR, s is a preset time length,/a>For the total number of antennas receiving the pilot signal of the target user equipment, i is the index of antennas receiving the pilot signal of the target user equipment, j is the index of the target user, m is the total number of user equipment of the resource block where the target user equipment is located, and i is the index of antennas receiving the pilot signal of the target user equipment>And the first SINR.
In a second aspect, in this embodiment, there is provided an SINR estimation apparatus of a PUCCH channel, including:
the first acquisition module acquires information of a pilot signal according to the pilot signal uploaded by target user equipment in a PUCCH channel, wherein the information of the pilot signal comprises: delay value, equivalent power and noise power;
the second acquisition module is used for acquiring a power adjustment coefficient corresponding to the time delay value and obtaining a power adjustment value for correcting the noise power and the equivalent power according to the power adjustment coefficient and the equivalent power;
a determining module, configured to determine a resource block where the target ue is located, and obtain power adjustment values of signals of other ues on the resource block, respectively, and obtain a total power adjustment value according to the power adjustment value of the pilot signal of the target ue and the power adjustment value of the pilot signal of the other ues, and obtain a target noise power of the pilot signal of the target ue according to the noise power and the total power adjustment value;
and a calculation module, configured to calculate SINR of the pilot signal according to the target noise power.
In a third aspect, in this embodiment, there is provided a SINR estimation system of a PUCCH channel, including: terminal equipment and a base station; wherein,
the terminal equipment is used for transmitting pilot signals, and the pilot signals are transmitted to the base station through a PUCCH channel;
the base station receives the pilot signal and executes the SINR estimation method of the PUCCH channel described in the first aspect.
In a fourth aspect, in this embodiment, there is provided an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the method for estimating SINR of a PUCCH channel according to the first aspect.
In a fifth aspect, in this embodiment, there is provided a storage medium having stored thereon a computer program, which when executed by a processor, implements the method for estimating SINR of a PUCCH channel according to the first aspect.
Compared with the related art, the SINR estimation method of the PUCCH channel provided in the present embodiment includes: according to the pilot signal uploaded by the target user equipment in the PUCCH channel, obtaining information of the pilot signal, wherein the information of the pilot signal comprises: delay value, equivalent power and noise power; acquiring a power adjustment coefficient corresponding to the time delay value, and acquiring a first power adjustment value for correcting noise power and equivalent power according to the power adjustment coefficient and the equivalent power; determining a resource block where the target user equipment is located, respectively obtaining second power adjustment values of signals of other user equipment on the resource block, obtaining a total power adjustment value on the resource block according to the first power adjustment value of the pilot signal of the target user equipment and the second power adjustment value of the pilot signal of the other user equipment, and obtaining target noise power of the pilot signals of the target user equipment and the other user equipment on the resource block according to the noise power and the total power adjustment value; a first SINR of the pilot signal is calculated based on the target noise power, the equivalent power and the noise power. The method solves the problem that the SINR estimation of the PUCCH cannot be considered in both accuracy and convenience, and improves the accuracy and convenience of the SINR estimation of the PUCCH.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the other features, objects, and advantages of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a block diagram of a hardware configuration of a terminal of an SINR estimation method of a PUCCH channel according to an embodiment of the present application;
fig. 2 is a flowchart of a method for estimating SINR of a PUCCH channel according to an embodiment of the present application;
fig. 3 is a flowchart of another SINR estimation method of PUCCH channel according to an embodiment of the present application;
fig. 4 is a schematic diagram of SINR correction results for PUCCH multiple users with different delays according to an embodiment of the present application;
fig. 5 is a block diagram showing a configuration of an SINR estimating apparatus for PUCCH channel according to an embodiment of the present application.
Detailed Description
The present application will be described and illustrated with reference to the accompanying drawings and examples for a clearer understanding of the objects, technical solutions and advantages of the present application.
Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms "a," "an," "the," "these" and similar terms in this application are not intended to be limiting in number, but may be singular or plural. The terms "comprising," "including," "having," and any variations thereof, as used herein, are intended to encompass non-exclusive inclusion; for example, a process, method, and system, article, or apparatus that comprises a list of steps or modules (units) is not limited to the list of steps or modules (units), but may include other steps or modules (units) not listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in this disclosure are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means two or more. "and/or" describes an association relationship of an association object, meaning that there may be three relationships, e.g., "a and/or B" may mean: a exists alone, A and B exist together, and B exists alone. Typically, the character "/" indicates that the associated object is an "or" relationship. The terms "first", "second", "third", etc. referred to in this disclosure merely distinguish similar objects and do not represent a particular ordering of the needle objects.
The method embodiments provided in the present embodiment may be executed in a terminal, a computer, or similar computing device. For example, the method is run on a terminal, and fig. 1 is a block diagram of a hardware structure of the terminal of the SINR estimation method of PUCCH channel according to an embodiment of the present application. As shown in fig. 1, the terminal may include one or more (only one is shown in fig. 1) processors 102 and a memory 104 for storing data, wherein the processors 102 may include, but are not limited to, a microprocessor MCU, a programmable logic device FPGA, or the like. The terminal may also include a transmission device 106 for communication functions and an input-output device 108. It will be appreciated by those skilled in the art that the structure shown in fig. 1 is merely illustrative and is not intended to limit the structure of the terminal. For example, the terminal may also include more or fewer components than shown in fig. 1, or have a different configuration than shown in fig. 1.
The memory 104 may be used to store a computer program, for example, a software program of application software and a module, such as a computer program corresponding to the SINR estimation method of the PUCCH channel in the present embodiment, and the processor 102 executes the computer program stored in the memory 104, thereby performing various functional applications and data processing, that is, implementing the above-described method. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory remotely located relative to the processor 102, which may be connected to the terminal via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used to receive or transmit data via a network. The network includes a wireless network provided by a communication provider of the terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, simply referred to as NIC) that can connect to other network devices through a base station to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is configured to communicate with the internet wirelessly.
In this embodiment, there is provided a method for estimating SINR of a PUCCH channel, and fig. 2 is a flowchart of the method for estimating SINR of a PUCCH channel in this embodiment, as shown in fig. 2, the flowchart includes the following steps:
step S201, according to the pilot signal uploaded by the target user equipment in the PUCCH channel, obtaining information of the pilot signal, wherein the information of the pilot signal comprises: delay value, equivalent power and noise power. And after channel estimation is carried out on the received pilot signals, obtaining the time delay value, equivalent power and noise power of the pilot signals. At this time, the received pilot signal is affected by the channel delay, so that mismatch loss during correlation is generated, and the estimated equivalent power value is smaller. Wherein the lost partial equivalent power value is regarded as noise power.
Step S202, a power adjustment coefficient corresponding to the time delay value is obtained, and a first power adjustment value for correcting the noise power and the equivalent power is obtained according to the power adjustment coefficient and the equivalent power. And obtaining a power adjustment coefficient table according to mismatch loss of the PUCCH channel pilot signal under unit power under different time delays. According to the time delay value of the pilot signal uploaded by the target user equipment, a corresponding power adjustment coefficient can be obtained, and the equivalent power and the noise power can be corrected through the power adjustment coefficient. Optionally, the pilot signal of the target user generates mismatch loss due to channel delay, so that the equivalent power obtained in step S201 is smaller, and the lost part of the equivalent power is regarded as noise power, so that the noise power obtained in step S201 is smaller. The first power adjustment value may correct for smaller equivalent power and larger noise power.
Step S203, determining a resource block where the target user equipment is located, respectively obtaining second power adjustment values of signals of other user equipment on the resource block, obtaining a total power adjustment value on the resource block according to the first power adjustment values of pilot signals of the target user equipment and the second power adjustment values of the pilot signals of the other user equipment, and obtaining target noise powers of the pilot signals of the target user equipment and the other user equipment on the resource block according to the noise power and the total power adjustment values. Optionally, based on the same method as the first power adjustment value, the power adjustment values of the pilot signals of the rest user equipment on the resource block are respectively obtained to obtain a second power adjustment value.
In the case of PUCCH channel multi-user, the second power adjustment value of the other user equipment on the resource block where the target user equipment is located may also interfere with the noise power on the resource block, except that the first power adjustment value of the target user equipment affects the obtaining of the noise power in step S201. Therefore, the noise power on the resource block is corrected together according to the total power adjustment value, and the target noise power of the pilot signals of the target user equipment and the rest user equipment on the resource block is obtained.
Step S204, a first SINR of the pilot signal is calculated according to the target noise power, the equivalent power and the noise power. Optionally, the second SINR is derived from an equivalent power and a noise power of the pilot signal of the target user. The second SINR is affected by the delay value, and there is a problem of inaccuracy. And calculating and obtaining the SINR correction value of the pilot signal of the target user according to the target noise power, the equivalent power and the noise power. And correcting the second SINR through the SINR correction value to obtain the first SINR of the pilot signal.
Through the above steps S201 to S204, the power adjustment value is calculated from the power adjustment coefficient of the PUCCH channel pilot signal under different delays. After the power adjustment value adjusts the equivalent power and the noise power value with estimation errors, the first SINR of the pilot signal is obtained through simple steps, so that the influence of the two factors of the equivalent power value and the time delay on the first SINR of the pilot signal is corrected. The SINR estimation is directly carried out based on the pilot signal frequency domain data, the calculated amount is small, the SINR estimation is accurate, the problem that the SINR estimation of the PUCCH channel cannot be considered in both accuracy and convenience is solved, and the improvement of the accuracy and convenience of the SINR estimation of the PUCCH channel is realized.
In some of these embodiments, prior to obtaining the power adjustment coefficient corresponding to the delay value, the method includes: locally generating a first signal of a pilot signal of the test user equipment, wherein the first signal has no time delay; acquiring a second signal output after pilot signals of the test user equipment are transmitted through a channel, wherein the second signal has time delay; and obtaining a power adjustment coefficient under a corresponding time delay value according to the similarity of the first signal and the second signal.
Wherein the first signal is a local reference signal of a pilot signal of the test user equipment, and obtaining the local reference signal includes: and calculating a signal which is output by the pilot signal after channel transmission under the condition of not being influenced by the time delay value according to the pilot signal of the test user equipment. The second signal is a signal that generates mismatch loss due to the influence of the delay value. Optionally, pilot signals of a plurality of test user devices are acquired, and second signals output by the pilot signals of the PUCCH channels uploaded by the plurality of test user devices under different time delay values are simulated respectively. And obtaining mismatch loss generated by the second signal under different delays by taking the local reference signal as a reference, despreading the first signal and the second signal, and obtaining a delay value of the second signal according to phase difference information obtained by despreading, thereby obtaining a change rule of delay and mismatch loss and a linear change relation with the equivalent power of the pilot signal. Therefore, according to mismatch loss of the PUCCH channel pilot signal of unit power under different time delays, the similarity of the first signal and the second signal is obtained, and the test results of a plurality of test user equipment are counted to obtain the power adjustment coefficient table. The power adjustment coefficient is used to adjust the equivalent power and the noise power value.
In some of these embodiments, obtaining the delay value, the equivalent power, and the noise power of the pilot signal of the target user equipment includes: determining an antenna that receives a pilot signal of the target user equipment; and acquiring a time delay value, equivalent power and noise power of a pilot signal received by an antenna within preset time. All antennas that receive the pilot signal of the target user device are determined, and the antennas that receive the target user device may be multiple antennas. And the multi-antenna is utilized to restrain channel fading, so that signal interference is reduced, and the reliability of signals is improved.
Obtaining a first power adjustment value for correcting noise power and equivalent power according to the power adjustment coefficient and the equivalent power, including: and multiplying the power adjustment coefficient by the equivalent power to obtain a first power adjustment value. The power adjustment coefficient is the power adjustment rate corresponding to the pilot signal delay value of the target user equipment, and the equivalent power is adjusted by the power adjustment coefficient, so that an equivalent power correction item of the pilot signal of the target user equipment, namely a first power adjustment value, can be obtained. Specifically, according to the equivalent power and the time delay value of the pilot signal of each user equipment, a correction term of the equivalent power of each user signal is calculated and recorded as a first power adjustment value：
；
Wherein s is a preset time length, which may be a time slot length, and the preset time length in the above formula is two time slots,for the total number of antennas receiving the pilot signal of the target user equipment, i is the index of the antennas receiving the pilot signal of the target user equipment, j is the index of the target user, +.>Equivalent power of pilot signal of j-th user equipment received by antenna under one time slot,/>The power adjustment factor of the pilot signal sent for the jth user equipment.
Obtaining the target noise power of the pilot signal of the target user equipment according to the noise power and the total power adjustment value, wherein the method comprises the following steps: and subtracting the total power adjustment value from the noise power to obtain the target noise power. When the RB where the user is located includes a plurality of users, the second power adjustment value of the other user equipment and the first power adjustment value of the target user equipment both form interference to the target noise power. Therefore, the noise power is subtracted by the total power adjustment value, and the SINR correction under the condition of the PUCCH channel and multiple users is completed. Specifically, the noise power on the RB where each user is located is adjusted, and the target noise power is noted as den:
；
；
wherein ,the pilot signal of the j-th user equipment received for the antenna is noise power at one slot. />And m is the total number of the user equipment of the RB (Resource Block) where the target user equipment is located.
And obtaining the second SINR according to the equivalent power and the noise power of the pilot signal of the target user. The pilot signal of the target user equipment is affected by time delay, related mismatch loss is generated, the estimated equivalent power is smaller, and then a second SINR is smaller, and the second SINR is recorded as：
；
Calculating the SINR of the pilot signal according to the target noise power comprises: and obtaining the SINR correction value of the pilot signal of the target user according to the target noise power, the equivalent power and the noise power. Correcting the equivalent power and the noise power of the pilot signal sent by the target user equipment according to the target noise power to obtain an SINR correction value for correcting the second SINR, which is recorded as：
；
；
And obtaining the first SINR of the pilot signal sent by the target user equipment based on the second SINR and the SINR correction value. Correcting the estimated second SINR by the SINR correction value to obtain corrected SINR, wherein the first SINR is recorded as：
。
The embodiment also provides a SINR estimation method of the PUCCH channel. Fig. 3 is a flowchart of another SINR estimation method of PUCCH channel according to the present embodiment, and as shown in fig. 3, the flowchart includes the following steps:
step S301, estimating the time delay, the signal equivalent power and the noise power of each PUCCH user by using PUCCH frequency domain data;
specifically, after channel estimation is performed on the PUCCH frequency domain data, according to a conventional PUCCH channel processing flow, delay, signal equivalent power and noise power of each user are estimated first.
Step S302, according to the time delay value of each user, looking up a table to obtain the power adjustment rate of the user;
step S303, calculating the correction term of the signal equivalent power of each user according to the signal equivalent power and the power adjustment rate of each user;
step S304, for each user, calculating the power adjustment sum of all users on the RB where the user is located;
step S305, adjusting the noise power on the RB where each user is located;
step S306, calculating the corrected value of SINR according to the formula;
step S307, corrects SINR with the correction value.
Through the steps, the change rule of mismatch loss caused by the influence of time delay on the PUCCH channel pilot signal and the local reference signal is found, and the mismatch loss of the PUCCH channel pilot signal under the condition of unit power under the condition of different time delay is made into a power adjustment coefficient table, wherein the power adjustment coefficient is the power adjustment rate under the time delay Ts. And obtaining the optimized equivalent power value and noise power by the power adjustment coefficient and the original estimated equivalent power and noise power value, thereby obtaining the corrected value of the SINR. The method solves the problem that the estimated SINR is smaller because the estimation of the equivalent power value of the pilot signal is greatly affected by time delay under the conditions of single user and multiple users of the PUCCH channel and the high signal-to-noise ratio exists. By the method for correcting the SINR estimation value, the accuracy of the estimated SINR is improved, meanwhile, the calculated amount is ensured to be smaller, and the improvement of the SINR estimation accuracy and convenience of the PUCCH channel is realized.
It should be noted that the steps illustrated in the above-described flow or flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and that, although a logical order is illustrated in the flow diagrams, in some cases, the steps illustrated or described may be performed in an order other than that illustrated herein.
Fig. 4 is a schematic diagram of SINR correction results for PUCCH multiple users with different delays according to an embodiment of the present application. As shown, a set of LTE (Long Term Evolution, LTE) uplink data is selected, and a PUCCH fomrat2 format is selected, where the PUCCH channel includes two users: user 1 and user 2 respectively estimate SINR of two user data under the condition of adding different time delays, and the estimated SINR is corrected by using the SINR estimation method of the PUCCH channel in the embodiment, and the corrected SINR is very close to the SINR when the time delay value is 0.
The present embodiment also provides a device for estimating SINR of a PUCCH channel, which is used to implement the foregoing embodiments and preferred embodiments, and will not be described in detail. The terms "module," "unit," "sub-unit," and the like as used below may refer to a combination of software and/or hardware that performs a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware, are also possible and contemplated.
Fig. 5 is a block diagram of the structure of the SINR estimation apparatus of the PUCCH channel according to the present embodiment, and as shown in fig. 5, the apparatus includes:
the first acquisition module acquires information of a pilot signal according to the pilot signal uploaded by target user equipment in a PUCCH channel, wherein the information of the pilot signal comprises: delay value, equivalent power and noise power;
the second acquisition module is used for acquiring a power adjustment coefficient corresponding to the delay value and obtaining a first power adjustment value for correcting the noise power and the equivalent power according to the power adjustment coefficient and the equivalent power;
the determining module is used for determining a resource block where the target user equipment is located, respectively obtaining second power adjustment values of signals of other user equipment on the source block, obtaining a total power adjustment value on the resource block according to the first power adjustment values of pilot signals of the target user equipment and the second power adjustment values of the pilot signals of the other user equipment, and obtaining target noise powers of the pilot signals of the target user equipment and the other user equipment on the resource block according to the noise power and the total power adjustment values;
and the calculation module is used for calculating the first SINR of the pilot signal according to the target noise power, the equivalent power and the noise power.
The above-described respective modules may be functional modules or program modules, and may be implemented by software or hardware. For modules implemented in hardware, the various modules described above may be located in the same processor; or the above modules may be located in different processors in any combination.
The present embodiment also provides a SINR estimation system of PUCCH channel, including: terminal equipment and a base station; the terminal equipment is used for transmitting pilot signals, and the pilot signals are transmitted to the base station through the PUCCH channel; the base station receives the pilot signal and performs the steps in any of the method embodiments described above.
There is also provided in this embodiment an electronic device comprising a memory having stored therein a computer program and a processor arranged to run the computer program to perform the steps of any of the method embodiments described above.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, where the transmission device is connected to the processor, and the input/output device is connected to the processor.
Alternatively, in the present embodiment, the above-described processor may be configured to execute the following steps by a computer program:
s201, according to pilot signals uploaded by target user equipment in a PUCCH channel, obtaining information of the pilot signals, wherein the information of the pilot signals comprises: delay value, equivalent power and noise power;
s202, acquiring a power adjustment coefficient corresponding to the time delay value, and obtaining a first power adjustment value for correcting noise power and equivalent power according to the power adjustment coefficient and the equivalent power;
s203, determining a resource block where the target user equipment is located, respectively obtaining second power adjustment values of signals of other user equipment on the source block, obtaining a total power adjustment value on the resource block according to the first power adjustment values of pilot signals of the target user equipment and the second power adjustment values of the pilot signals of the other user equipment, and obtaining target noise powers of the pilot signals of the target user equipment and the other user equipment on the resource block according to the noise power and the total power adjustment values;
s204, calculating the first SINR of the pilot signal according to the target noise power, the equivalent power and the noise power.
It should be noted that, specific examples in this embodiment may refer to examples described in the foregoing embodiments and alternative implementations, and are not described in detail in this embodiment.
In addition, in combination with the SINR estimation method of the PUCCH channel provided in the above embodiment, a storage medium may also be provided for implementation in the present embodiment. The storage medium has a computer program stored thereon; the computer program, when executed by a processor, implements the SINR estimation method of any of the PUCCH channels in the above embodiments.
It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to be limiting. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure in accordance with the embodiments provided herein.
It is to be understood that the drawings are merely illustrative of some embodiments of the present application and that it is possible for those skilled in the art to adapt the present application to other similar situations without the need for inventive work. In addition, it should be appreciated that while the development effort might be complex and lengthy, it will nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and further having the benefit of this disclosure.
The term "embodiment" in this disclosure means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive. It will be clear or implicitly understood by those of ordinary skill in the art that the embodiments described in the present application can be combined with other embodiments without conflict.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the patent claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.
Claims (12)
1. A method for estimating SINR of a PUCCH channel, comprising:
according to a pilot signal uploaded by target user equipment in a PUCCH channel, acquiring information of the pilot signal, wherein the information of the pilot signal comprises: delay value, equivalent power and noise power;
acquiring a power adjustment coefficient corresponding to the time delay value, and acquiring a first power adjustment value for correcting the noise power and the equivalent power according to the power adjustment coefficient and the equivalent power;
determining a resource block where the target user equipment is located, respectively obtaining second power adjustment values of signals of other user equipment on the resource block, obtaining a total power adjustment value on the resource block according to the first power adjustment value of a pilot signal of the target user equipment and the second power adjustment value of the pilot signal of the other user equipment, and obtaining target noise powers of the pilot signals of the target user equipment and the other user equipment on the resource block according to the noise power and the total power adjustment value;
calculating a first SINR of the pilot signal from the target noise power, the equivalent power, and the noise power, including:
obtaining an SINR correction value of a pilot signal of the target user according to the target noise power, the power adjustment coefficient and the noise power; wherein,
；
for the SINR correction value, ++>For the noise power, +.>For the power adjustment coefficient, den is the target noise power, s is a preset time length, j is an index of the target user, and m is the total number of user equipment of the resource block where the target user equipment is located;
dividing the equivalent power of the pilot signal of the target user by the noise power to obtain a second SINR;
and summing the SINR correction value with the second SINR to obtain the first SINR.
2. The SINR estimation method of PUCCH channel according to claim 1, characterized in that before acquiring the power adjustment coefficient corresponding to the delay value, the method includes:
locally generating a first signal of a pilot signal of a test user equipment, wherein the first signal has no time delay;
acquiring a second signal output after the pilot signal of the test user equipment is transmitted through a channel, wherein the second signal has time delay;
and obtaining a power adjustment coefficient under a corresponding time delay value according to the similarity of the first signal and the second signal.
3. The SINR estimation method of PUCCH channel according to claim 1, wherein obtaining a delay value, equivalent power and noise power of a pilot signal of a target user equipment includes:
determining an antenna that receives a pilot signal of the target user equipment;
and acquiring a time delay value, equivalent power and noise power of the pilot signal received by the antenna within preset time.
4. The SINR estimation method of PUCCH channel according to claim 1, wherein obtaining a first power adjustment value for correcting the noise power and the equivalent power according to the power adjustment coefficient and the equivalent power includes:
multiplying the power adjustment coefficient by the equivalent power to obtain the first power adjustment value.
5. The method of estimating SINR of a PUCCH channel according to claim 4, wherein multiplying the power adjustment coefficient by the equivalent power to obtain the first power adjustment value includes:
；
wherein ,for the first power adjustment value, s is a preset length of time,/for a first power adjustment value>For the total number of antennas receiving the pilot signal of the target user equipment, i is the index of antennas receiving the pilot signal of the target user equipment, j is the index of the target user,/>For the equivalent power, +.>And adjusting a coefficient for the power.
6. The method for estimating SINR of PUCCH channel according to claim 1, wherein obtaining the target noise power of the pilot signal of the target ue according to the noise power and the total power adjustment value includes:
and subtracting the total power adjustment value from the noise power to obtain the target noise power.
7. The method of estimating SINR of a PUCCH channel according to claim 6, wherein subtracting the total power adjustment value from the noise power yields the target noise power, comprising:
；
where den is the target noise power,for the noise power, +.>For the total power adjustment value s is a preset length of time,/for the total power adjustment value>For the total number of antennas receiving the pilot signal of the target user equipment, i is the index of antennas receiving the pilot signal of the target user equipment, j is the index of the target user, and m is the total number of user equipment of the resource block where the target user equipment is located.
8. The method of estimating SINR of PUCCH channel according to claim 1, wherein dividing the noise power by the equivalent power of the pilot signal of the target user to obtain the second SINR includes:
；
summing the SINR correction value with the second SINR to obtain the first SINR, including:
；
wherein ,for the equivalent power, +.>For the second SINR>For the total number of antennas receiving the pilot signal of the target user equipment, i is the antenna index receiving the pilot signal of the target user equipment,/>And the first SINR.
9. An SINR estimation apparatus for PUCCH channel, comprising:
the first acquisition module acquires information of a pilot signal according to the pilot signal uploaded by target user equipment in a PUCCH channel, wherein the information of the pilot signal comprises: delay value, equivalent power and noise power;
the second acquisition module is used for acquiring a power adjustment coefficient corresponding to the delay value, and acquiring a first power adjustment value for correcting the noise power and the equivalent power according to the power adjustment coefficient and the equivalent power;
a determining module, configured to determine a resource block where the target ue is located, and obtain second power adjustment values of signals of other ues on the resource block, respectively, and obtain a total power adjustment value on the resource block according to the first power adjustment value of the pilot signal of the target ue and the second power adjustment value of the pilot signal of the other ues, and obtain target noise powers of the pilot signals of the target ue and the other ues on the resource block according to the noise power and the total power adjustment value;
a calculation module, configured to calculate a first SINR of the pilot signal according to the target noise power, where the calculation module includes:
obtaining an SINR correction value of a pilot signal of the target user according to the target noise power, the power adjustment coefficient and the noise power; wherein,
；
for the SINR correction value, ++>For the noise power, +.>For the power adjustment coefficient, den is the target noise power, s is a preset time length, j is an index of the target user, and m is the total number of user equipment of the resource block where the target user equipment is located;
dividing the equivalent power of the pilot signal of the target user by the noise power to obtain a second SINR;
and summing the SINR correction value with the second SINR to obtain the first SINR.
10. A SINR estimation system for a PUCCH channel, comprising: terminal equipment and a base station; wherein,
the terminal equipment is used for sending a pilot signal, and the pilot signal is transmitted to the base station through a PUCCH channel;
the base station is configured to receive the pilot signal and perform the SINR estimation method of the PUCCH channel according to any one of claims 1 to 8.
11. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, the processor being arranged to run the computer program to perform the method of estimating SINR of a PUCCH channel according to any of claims 1 to 8.
12. A computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the method of estimating SINR of a PUCCH channel according to any of claims 1 to 8.
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