WO2021254363A1

WO2021254363A1 - Channel space configuration method and apparatus, computer device and computer-readable storage medium

Info

Publication number: WO2021254363A1
Application number: PCT/CN2021/100273
Authority: WO
Inventors: 吴昊
Original assignee: 中兴通讯股份有限公司
Priority date: 2020-06-18
Filing date: 2021-06-16
Publication date: 2021-12-23
Also published as: CN113824541A

Abstract

The present application relates to the technical field of wireless communication, and provides a channel space configuration method. The method comprises: acquiring a first characteristic parameter of a channel space; generating and storing a codebook according to the first characteristic parameter; and delivering the codebook to a physical layer. The present application further provides a channel space configuration apparatus, a computer device and a computer-readable storage medium.

Description

Channel space configuration method and device, computer equipment and computer readable storage medium

The present disclosure claims the priority of a Chinese patent application filed with the Chinese Patent Office with an application number of 202010558453.1 on June 18, 2020, and the entire content of the application is incorporated into the present disclosure by reference.

Technical field

The present disclosure relates to the field of wireless communication technology.

Background technique

Currently, the channel space configuration parameters are set in advance and are directly issued to the physical layer. The channel space configuration parameters cannot reflect the current channel space status. After configuring according to the configuration parameters, the system performance is not optimal, so the system performance is not optimal. good.

Summary of the invention

An aspect of the embodiments of the present disclosure provides a channel space configuration method, including: acquiring a first characteristic parameter of the channel space; generating and storing a codebook according to the first characteristic parameter; and issuing the codebook to a physical layer.

Another aspect of the embodiments of the present disclosure provides a channel space configuration device, including: an acquisition module configured to acquire a first characteristic parameter of the channel space; a codebook generation module configured to generate and store a code according to the first characteristic parameter The storage space of the codebook is smaller than the storage space for storing the first characteristic parameter; and the configuration module is configured to issue the codebook to the physical layer.

Another aspect of the embodiments of the present disclosure provides a computer device, including: at least one processor; and, a memory on which at least one program is stored; when the at least one program is executed by the at least one processor, the at least one processor At least one step of the channel space configuration method provided by the embodiment of the present disclosure is implemented.

Another aspect of the embodiments of the present disclosure provides a computer-readable storage medium on which a computer program is stored, and when the program is executed, it realizes at least one step of the channel space configuration method provided by the embodiment of the present disclosure.

Description of the drawings

FIG. 1 is a schematic diagram of a channel space configuration process provided by an embodiment of the disclosure.

FIG. 2 is a second schematic diagram of a channel space configuration process provided by an embodiment of the disclosure.

FIG. 3 is one of the structural schematic diagrams of a channel space configuration device provided by an embodiment of the disclosure.

FIG. 4 is the second structural diagram of a channel space configuration device provided by an embodiment of the disclosure.

detailed description

Hereinafter, example embodiments will be described more fully with reference to the accompanying drawings, but the example embodiments may be embodied in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, the purpose of providing the embodiments is to make the present disclosure thorough and complete, and to enable those skilled in the art to fully understand the scope of the present disclosure.

As used herein, the term "and/or" includes any and all combinations of at least one related listed item.

The terms used herein are only used to describe specific embodiments and are not intended to limit the present disclosure. As used herein, the singular forms "a" and "the" are also intended to include the plural forms, unless the context clearly dictates otherwise. It will also be understood that when the terms "comprise" and/or "made of" are used in this specification, it specifies the presence of the described features, wholes, steps, operations, elements and/or components, but does not exclude the presence or Add at least one other feature, whole, step, operation, element, component, and/or group thereof.

The embodiments described herein can be described with reference to plan views and/or cross-sectional views with the help of ideal schematic diagrams of the present disclosure. Therefore, the example illustrations may be modified according to manufacturing technology and/or tolerances. Therefore, the embodiment is not limited to the embodiment shown in the drawings, but includes a modification of the configuration formed based on the manufacturing process. Therefore, the regions illustrated in the drawings have schematic properties, and the shapes of the regions shown in the figures exemplify the specific shapes of the regions of the elements, but are not intended to be limiting.

Unless otherwise defined, the meanings of all terms (including technical and scientific terms) used herein are the same as those commonly understood by those of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of the related technology and the present disclosure, and will not be interpreted as having idealized or excessive formal meanings, Unless this article specifically defines it as such.

The embodiment of the present disclosure provides a channel space configuration method. In the initialization phase, the characteristic parameter type of the channel space is preset, and the characteristic parameter of the set type should be able to reduce the storage space of the configuration parameter used to characterize the state of the channel space. In an implementation manner, the type of characteristic parameters may include one or any combination of the following: root mean square delay spread, signal-to-noise ratio, power delay spectrum, channel estimation filter coefficients, channel correlation matrix, Fourier transform matrix , The power delay spectrum is non-zero, and the mean square error of the channel estimation. It should be noted that the types of characteristic parameters include but are not limited to the above-mentioned types. The characteristic parameters may be one or more types of the above-mentioned characteristic parameters, and may also be functions of the above-mentioned one or more types of characteristic parameters. For example, the characteristic parameter can be a function of the singular value decomposition of the channel correlation matrix and the signal-to-noise ratio, or a function of the singular value decomposition of the channel correlation matrix and the non-zero value of the power delay spectrum.

As shown in FIG. 1, the channel space configuration method may include step S11-step S13.

In step S11, the first characteristic parameter of the channel space is acquired.

The first characteristic parameter is the previously defined characteristic parameter. In this step, the first characteristic parameter of the corresponding type is obtained according to the predetermined type.

In step S12, a codebook is generated and stored according to the first characteristic parameter.

In this step, the method of vector quantization can be used to generate the codebook. The codebook is used to store the code, and the code is used to characterize the state of the channel space. The storage space of the codebook is smaller than the storage space used to store the first characteristic parameter. The process of the codebook is the compression process of storing configuration parameters that characterize the state of the channel space.

The vector quantization method may include: tree search vector quantization method and full search vector quantization method, etc. The mean square error can be used to measure the quantization distortion.

The full search vector quantization method can compress the channel space data to the greatest extent, but it is not conducive to finding the most suitable code. The tree search vector quantization method can minimize the amount of calculation for finding the most suitable code, but it will increase the size of the storage space occupied by the stored codebook.

Some receivers work in specific environments, such as indoor, suburban, urban, high-speed rail, underwater and other environments. The power delay spectrum of these environments is generally limited to a small range of changes. In this way, the limitation of the power delay spectrum can be used to compress the codebook storage space. The power delay spectrum is generally caused by scattered reflectors. Due to the sparseness of the reflectors, the power delay spectrum also has sparseness. In this way, the sparseness of the power delay spectrum can be used to compress the codebook storage space. Therefore, when the type of the first characteristic parameter includes the power delay spectrum, the codebook can be compressed smaller, that is, the codebook storage space can be compressed more optimally.

In step S13, the codebook is issued to the physical layer.

In this step, the generated codebook is sent to the physical layer as the configuration parameters of the channel space, and the physical layer implements the parameter configuration operation, that is, the physical layer can select a code from the codebook that is most consistent with the actual channel for operation Processing to minimize the mean square error.

According to the channel space configuration method provided by the embodiment of the present disclosure, the first characteristic parameter of the channel space can be obtained, the codebook is generated and stored according to the first characteristic parameter, and the codebook is issued to the physical layer. The codebook is sent to the physical layer as the configuration parameter of the channel space, and the codebook is designed and generated according to the actual state of the channel. Therefore, the channel configuration parameters sent to the physical layer are more reasonable, which can improve the system performance.

In an implementation manner, in step S11, acquiring the first characteristic parameter of the channel space may include: acquiring the first characteristic parameter of the channel space from the physical layer. The first characteristic parameter of the channel space reported by the physical layer reflects the current state of the channel space. Therefore, the codebook generated based on the first characteristic parameter can also match the current channel space state, that is, the configuration parameters are more reasonable. It should be noted that the first characteristic parameter may also be preset according to the target working environment of the base station. Of course, the first characteristic parameter preset according to the target working environment of the base station is compared with the first characteristic parameter obtained from the physical layer. The real-time performance is poor, and accordingly the codebook generated from it is not reasonable.

In an implementable manner, step S13 sending the codebook to the physical layer may include: if the storage space of the codebook is less than a preset first threshold, sending the codebook to the physical layer. That is to say, in the embodiment of the present disclosure, the configuration parameters are sent to the physical layer according to the size of the storage space of the codebook, and when the storage space of the codebook is less than a certain threshold, the codebook is issued as the configuration parameter of the channel space. The physical layer allows the physical layer to perform configuration operations in accordance with the generated codebook. When the storage space of the codebook is greater than a certain threshold, the preset configuration parameters (the configuration parameters are not codebooks) are issued to the physical layer in the existing manner, so that the physical layer performs configuration operations according to the configuration parameters. When the codebook has a large storage space, the channel space is no longer configured according to the codebook to avoid excessive calculations on the physical layer and reduce the pressure on the physical layer. The preset threshold can be determined according to the size of the system storage space.

In an implementation manner, after the codebook is issued to the physical layer, the channel space configuration method may further include: instructing the physical layer to configure the channel space according to the codebook. The physical layer can be instructed to select a code from the codebook that is most consistent with the actual channel to configure the channel space, so that the mean square error of the channel estimation is minimized.

In an implementation manner, as shown in FIG. 2, the channel space configuration method may further include step S21 and step S22.

In step S21, the second characteristic parameter of the channel space is acquired according to a preset period.

The second characteristic parameter may be the characteristic parameter set in the aforementioned initialization stage, that is, the type of the second characteristic parameter may be the same as the type of the first characteristic parameter. It should be noted that both the type of the first characteristic parameter and the type of the second characteristic parameter may include one or any combination of the following: root mean square delay spread, signal-to-noise ratio, power delay spectrum, channel estimation filter coefficient, channel correlation Matrix, Fourier transform matrix, non-zero value of power delay spectrum, or mean square error of channel estimation. The type of the first characteristic parameter may be different from the type of the second characteristic parameter.

In step S22, if the second characteristic parameter meets the preset condition, step S11 is executed; otherwise, the process ends.

In this step, if the second characteristic parameter meets the preset conditions, it indicates that the current working environment of the base station has changed. Once the working environment changes, the channel space state will change. At this time, the codebook is still based on the previous working environment change. If the channel space is generated, the performance of the system using the codebook for channel space configuration is not optimal. Therefore, in this case, the codebook needs to be regenerated and stored, and the codebook generated this time is sent to Physical layer (that is, perform step S11-step S13).

If the second characteristic parameter does not meet the preset condition, it indicates that the current working environment of the base station has not changed. Accordingly, there is no need to regenerate the codebook, and the process ends.

It should be noted that when the type of the second characteristic parameter is the same as the type of the first characteristic parameter, in this step, if it is determined that the current working environment of the base station has changed, step S11 may be omitted and step S12 may be directly executed.

In an implementation manner, the second characteristic parameter meeting the preset condition may include: the ratio of the second characteristic parameter to the standard parameter is greater than the preset second threshold, and the standard parameter is the codebook used when acquiring the second characteristic parameter. When the average value of the second characteristic parameter of the second characteristic parameter, that is, when the ratio of the average mean square error of the actual method of the second characteristic parameter to the average mean square error of the ideal method is greater than a certain threshold, the second characteristic parameter is considered to meet the preset condition.

In an implementation manner, if there are multiple types of the second characteristic parameter, satisfying the preset condition for the second characteristic parameter includes: all types of second characteristic parameters satisfy the preset condition.

Based on the same technical concept, embodiments of the present disclosure also provide a channel space configuration device. As shown in FIG. 3, the channel space configuration device includes an acquisition module 101, a codebook generation module 102, and a configuration module 103.

The acquiring module 101 is configured to acquire the first characteristic parameter of the channel space.

The codebook generating module 102 is configured to generate and store a codebook according to the first characteristic parameter, and the storage space of the codebook is smaller than the storage space for storing the first characteristic parameter.

The configuration module 103 is configured to deliver the codebook to the physical layer.

In an implementation manner, the configuration module 103 may be configured to issue the codebook to the physical layer when the storage space of the codebook is less than the preset first threshold.

In an implementation manner, the configuration module 103 may also be configured to instruct the physical layer to configure the channel space according to the codebook after sending the codebook to the physical layer.

In an implementation manner, as shown in FIG. 4, the channel space configuration device may further include a monitoring module 104, and the acquisition module 101 may also be configured to acquire the second characteristic parameter of the channel space according to a preset period.

The monitoring module 104 may be configured to determine whether the second characteristic parameter meets a preset condition, and if so, instruct the acquiring module 101 to acquire the first characteristic parameter of the channel space.

In an implementation manner, the second characteristic parameter meeting the preset condition includes: the ratio of the second characteristic parameter to the standard parameter is greater than the preset second threshold, and the standard parameter is the value in the codebook used when the second characteristic parameter is acquired. The average value of the second characteristic parameter.

In an implementation manner, the types of the first characteristic parameter and the second characteristic parameter include one or any combination of the following: root mean square delay spread, signal-to-noise ratio, power delay spectrum, channel estimation filter coefficient, channel correlation matrix , Fourier transform matrix, non-zero value of power delay spectrum, or mean square error of channel estimation.

The embodiments of the present disclosure also provide a computer device, which includes: at least one processor and a memory; wherein at least one program is stored in the memory, and when the at least one program is executed by the at least one processor, the At least one processor implements at least one step of the channel space configuration method provided by the embodiment of the present disclosure.

The embodiment of the present disclosure also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed, it implements at least one step of the channel space configuration method provided by the embodiment of the present disclosure.

A person of ordinary skill in the art can understand that all or some of the steps in the method disclosed above, and the functional modules/units in the device can be implemented as software, firmware, hardware, and appropriate combinations thereof. In the hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may consist of several physical components. The components are executed cooperatively. Certain physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit . Such software may be distributed on a computer-readable medium, and the computer-readable medium may include a computer storage medium (or a non-transitory medium) and a communication medium (or a transitory medium). As is well known by those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile data implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Sexual, removable and non-removable media. Computer storage media include, but are not limited to, Random Access Memory (RAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM) , Flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassette, tape, magnetic disk storage or other magnetic storage device, or can be used to store desired information and can be accessed by a computer Any other medium. In addition, as is well known to those of ordinary skill in the art, communication media usually contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as carrier waves or other transmission mechanisms, and may include any information delivery media. .

Example embodiments have been disclosed herein, and although specific terms are adopted, they are used and should only be interpreted as general descriptive meanings, and are not used for the purpose of limitation. In some instances, it is obvious to those skilled in the art that, unless expressly indicated otherwise, the features, characteristics, and/or elements described in combination with a particular embodiment can be used alone, or features, characteristics, and/or elements described in combination with other embodiments can be used, Combination of features and/or components. Therefore, those skilled in the art will understand that various changes in form and details can be made without departing from the scope of the present invention as set forth by the appended claims.

Claims

A channel space configuration method, including:

Acquiring the first characteristic parameter of the channel space;

Generate and store a codebook according to the first characteristic parameter, the storage space of the codebook is smaller than the storage space used to store the first characteristic parameter; and

Deliver the codebook to the physical layer.
The method according to claim 1, wherein the issuing the codebook to the physical layer comprises:

In response to determining that the storage space of the codebook is less than the preset first threshold, the codebook is delivered to the physical layer.
The method according to claim 2, after issuing the codebook to the physical layer, further comprising:

Instruct the physical layer to configure the channel space according to the codebook.
The method according to any one of claims 1-3, further comprising:

Acquiring the second characteristic parameter of the channel space according to a preset period; and

In response to determining that the second characteristic parameter satisfies a preset condition, acquiring the first characteristic parameter of the channel space.
The method of claim 4, wherein determining that the second characteristic parameter satisfies the preset condition comprises:

It is determined that the ratio of the second characteristic parameter to the standard parameter is greater than a preset second threshold; wherein the standard parameter is an average value of the second characteristic parameter in the codebook used when the second characteristic parameter is acquired.
The method of claim 5, wherein the second characteristic parameter includes a plurality of types of second characteristic parameters; and

Determining that the second characteristic parameter satisfies the preset condition includes:

It is determined that each type of second characteristic parameter of the plurality of types of second characteristic parameters satisfies the preset condition.
The method of claim 4, wherein the types of the first characteristic parameter and the second characteristic parameter include one or any combination of the following:

Root mean square delay spread, signal-to-noise ratio, power delay spectrum, channel estimation filter coefficient, channel correlation matrix, Fourier transform matrix, non-zero value of power delay spectrum, or mean square error of channel estimation.
A channel space configuration device, including:

An acquiring module configured to acquire the first characteristic parameter of the channel space;

A codebook generating module configured to generate and store a codebook according to the first characteristic parameter, the storage space of the codebook is smaller than the storage space for storing the first characteristic parameter; and

The configuration module is configured to deliver the codebook to the physical layer.
A computer equipment including:

At least one processor; and

A memory with at least one program stored thereon;

When the at least one program is executed by the at least one processor, the at least one processor is caused to implement the channel space configuration method according to any one of claims 1-7.
A computer-readable storage medium having a computer program stored thereon, which, when executed, realizes the channel space configuration method according to any one of claims 1-7.