CN114375041A

CN114375041A - Signal processing method and device

Info

Publication number: CN114375041A
Application number: CN202011104461.5A
Authority: CN
Inventors: 马大为
Original assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Current assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2022-04-19

Abstract

The embodiment of the application provides a signal processing method and a signal processing device, wherein the method comprises the following steps: the terminal equipment receives a channel state information reference signal (CSI-RS) resource sent by the network equipment, wherein the CSI-RS resource comprises P ports, each port corresponds to the channel state of K space-frequency domain beam pairs, P is an integer larger than or equal to 1, and K is an integer larger than or equal to 1. And the terminal equipment determines the codebook according to the CSI-RS resource and sends the codebook to the network equipment. By configuring P ports of the CSI-RS resources, each port corresponds to K space-frequency domain beam pairs, so that a large number of space-frequency domain beam pairs can be sent through a small number of CSI-RS ports, and downlink channel resources are effectively saved.

Description

Signal processing method and device

Technical Field

The present disclosure relates to communications technologies, and in particular, to a signal processing method and apparatus.

Background

The New Radio (NR) protocol supports the network device to send a Channel State Information Reference Signal (CSI-RS) for measuring a downlink Channel State, where the terminal device may send precoding Information to the network device according to the CSI-RS for data transmission.

Currently, in the prior art, when performing downlink channel state measurement based on CSI-RS, a network device may send a space-frequency domain beam pair on each CSI-RS port, for example, and then a terminal device may perform codebook search according to the space-frequency domain beam pair corresponding to each CSI-RS port, so as to send precoding information.

However, each CSI-RS port transmits one spatial-frequency domain beam pair, and a larger number of CSI-RS ports need to be configured, thereby occupying more downlink channel resources.

Disclosure of Invention

The embodiment of the application provides a signal processing method and a signal processing device, which are used for overcoming the problem that more downlink channel resources are occupied.

In a first aspect, an embodiment of the present application provides a signal processing method, including:

the method comprises the steps that terminal equipment receives a channel state information reference signal (CSI-RS) resource sent by network equipment, wherein the CSI-RS resource comprises P ports, each port corresponds to the channel state of K space-frequency domain beam pairs, P is an integer larger than or equal to 1, and K is an integer larger than or equal to 1;

and the terminal equipment determines a codebook according to the CSI-RS resource and sends the codebook to the network equipment.

In one possible design, the spatial-frequency domain beam pair consists of one spatial basis vector and one frequency domain basis vector.

In one possible design, the indices of the frequency-domain basis vectors in the K spatial-frequency-domain beam pairs mapped by each port are 0, 1, … … K-1, respectively.

In one possible design, the index of each frequency-domain basis vector in each of the K spatial-frequency-domain beam pairs mapped by each port is 0,

wherein, the N is₃Is the vector length of the frequency domain basis vector.

In one possible design, the determining, by the terminal device, a codebook according to the CSI-RS resource includes:

the terminal equipment carries out channel estimation according to the CSI-RS resource to obtain a channel matrix of each port;

the terminal device multiplies the channel matrix of each port by the K frequency domain basis vectors in the frequency domain dimension to obtain the corresponding channel state of each space-frequency domain beam pair;

and the terminal equipment determines the codebook according to the channel state corresponding to each space-frequency domain beam pair.

In a second aspect, an embodiment of the present application provides a signal processing method, including:

the method comprises the steps that network equipment sends CSI-RS resources to terminal equipment, wherein the CSI-RS resources comprise P ports, each port corresponds to the channel state of K space-frequency domain beam pairs, P is an integer larger than or equal to 1, and K is an integer larger than or equal to 1;

and the network equipment receives the codebook determined by the terminal equipment according to the CSI-RS resource.

wherein, the N is₃Is the vector length of the frequency domain basis vector.

In a third aspect, an embodiment of the present application provides a signal processing apparatus, including:

a receiving module, configured to receive, by a terminal device, a CSI-RS resource of a channel state information reference signal sent by a network device, where the CSI-RS resource includes P ports, each port corresponds to a channel state of K space-frequency domain beam pairs, P is an integer greater than or equal to 1, and K is an integer greater than or equal to 1;

and the processing module is used for determining a codebook according to the CSI-RS resource by the terminal equipment and sending the codebook to the network equipment.

wherein, the N is₃Is the vector length of the frequency domain basis vector.

In one possible design, the processing module is specifically configured to:

In a fourth aspect, an embodiment of the present application provides a signal processing apparatus, including:

a sending module, configured to send, by a network device, a CSI-RS resource to a terminal device, where the CSI-RS resource includes P ports, and each port corresponds to a channel state of K space-frequency domain beam pairs, where P is an integer greater than or equal to 1, and K is an integer greater than or equal to 1;

a receiving module, configured to receive, by the network device, a codebook determined by the terminal device according to the CSI-RS resource.

wherein, the N is₃Is the vector length of the frequency domain basis vector.

In a fifth aspect, an embodiment of the present application provides a signal processing apparatus, including:

a memory for storing a program;

a processor for executing the program stored in the memory, the processor being configured to perform the method as described above in the first aspect and in the various possible designs of the first aspect or in any one of the second aspect and in the various possible designs of the second aspect when the program is executed.

In a sixth aspect, embodiments of the present application provide a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the method as described in the first aspect and any of the various possible designs of the first aspect or any of the various possible designs of the second aspect and the second aspect.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic architecture diagram of a communication system suitable for use in the embodiments of the present application;

fig. 2 is a flowchart of a signal processing method according to an embodiment of the present application;

fig. 3 is a schematic diagram of one possible implementation manner of configuring a spatial-frequency domain beam pair according to an embodiment of the present application;

fig. 4 is a schematic diagram of another possible implementation manner of configuring a spatial-frequency domain beam pair according to an embodiment of the present application;

fig. 5 is a flowchart of a signal processing method according to another embodiment of the present application;

fig. 6 is a schematic structural diagram of a signal processing apparatus according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a signal processing apparatus according to another embodiment of the present application;

fig. 8 is a schematic hardware structure diagram of a signal processing apparatus according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to better understand the technical solution of the present application, first, an application scenario related to the present application is described:

fig. 1 is a schematic structural diagram of a communication system to which the embodiment of the present invention is applicable, and as shown in fig. 1, the communication system includes a network device and a plurality of terminal devices. The communication System may be a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a Long Term Evolution (LTE) System, or a 5th-Generation (5G) System. Correspondingly, the network device may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved NodeB (evolved NodeB, eNB) in an LTE system, an Access Point (AP), or a relay Station, or a Base Station in a 5G system, which is not limited herein.

The terminal device may be a wireless terminal, which may be a device that provides voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. A wireless terminal may communicate with at least one core Network via a Radio Access Network (RAN). The wireless terminals may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers with mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, that exchange voice and/or data with a radio access network. A wireless Terminal may also be referred to as a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile Station), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Equipment (User Equipment, UE for short), or a User Agent (User Agent), which is not limited herein.

For clarity of the following description of the various embodiments, a brief introduction to the related art is first given:

currently, in an NR protocol, a base station is supported to send a CSI-RS for downlink channel state measurement, and in a possible implementation manner, a terminal device may receive the CSI-RS and obtain a downlink channel matrix, and then may obtain an optimal precoding through codebook search, and then feed back precoding information to the base station for data transmission.

The CSI-RS may include multiple ports, where a CSI-RS port is a specific time-frequency resource combination, such as one symbol in time domain, one RE in frequency domain is one port, and may be composed of 1, 2, and 4 basic ports, and the number of other ports is the combination of the basic ports, and in a possible implementation manner at present, the maximum number of the CSI-RS ports is 32.

Different ports are distinguished through a time domain, a frequency domain and a code domain, and resource orthogonality among the ports is guaranteed.

In a possible implementation manner, the terminal device may use a codebook to feed back precoding information to the base station, where the codebook may be represented as the following formula one:

wherein, W₁The matrix is a matrix formed by space domain base vectors and is used for indicating the angle information of the multipath channel;

is a matrix formed by frequency domain basis vectors for indicating delay information of a multipath channel, W₂Is a matrix composed of linear combined coefficients for indicating space-frequency domain basis vectorThe channel strength of the quantity pair.

Wherein, W₁Has a dimension of 2N₁N₂×2L，W₁For example, the form of (d) can be the following formula two:

wherein, 2N₁N₂Number of ports, N, representing CSI-RS₁Number of CSI-RS ports representing a first dimension in the same polarization direction, N₂The number of CSI-RS ports of a second dimension in the same polarization direction is represented, a coefficient 2 represents dual polarization, L represents the number of space base vectors, and L (L belongs to {2,3,4,5,6}) space base vectors v₀，v₁，…，v_L-1Are orthogonal to each other.

Wherein, W_fDimension of (A) is N₃×M，W_fMay be, for example, the following formula three:

W_f＝[f₀ f₁…f_M-1]formula three

Wherein N is₃Vector length, N, representing frequency domain basis vectors₃＝R×N_SB(R∈{1,2})，N_SBIndicates the number of sub-bands for CSI feedback,

m denotes the number of frequency domain basis vectors, M frequency domain basis vectors f₀，f₁，…，f_M-1Are orthogonal to each other.

In a possible implementation manner, when determining the codebook W introduced above, the terminal device generally needs to determine W₁、W₂、

And calculating to obtain the codebook W and feeding back the codebook W to the base station.

However, according to the NR protocol, when the uplink and downlink channels have reciprocity of multipath angles, the base station can obtain angle information of the downlink channel through uplink channel measurement to determine the useIn the structure W₁The candidate spatial basis vectors of (2).

Meanwhile, because the interference conditions of the uplink and downlink channels are different, the base station still needs to send the CSI-RS for measuring the downlink channel state, and obtains precoding by receiving the feedback of the terminal device.

The base station may shape the CSI-RS to transmit a space-domain beam constructed by a candidate space-domain basis vector at each port of the CSI-RS, where the candidate space-domain basis vector is obtained by obtaining the angle information of the downlink channel through the uplink channel measurement.

It should be noted that Beamforming (Beamforming), also called Beamforming, spatial filtering, is a signal processing technique that uses a sensor array to directionally transmit and receive signals. Beamforming techniques allow signals at certain angles to achieve constructive interference and signals at other angles to achieve destructive interference by adjusting parameters of the basic elements of the phased array. Beamforming can be used for both signal transmitting and receiving ends.

In the process of codebook search of the terminal equipment, the W formed by the space domain base vector is originally needed₁The calculation is performed, however, now because the base station first determines the candidate spatial basis vectors and transmits spatial beams constructed by the candidate spatial basis vectors on each port of the CSI-RS, the terminal device is determining W₁In time, only the CSI-RS port needs to be selected, so that the calculation complexity of the terminal equipment is simplified.

Under specific conditions, the uplink and downlink channels have not only reciprocity of multipath angles but also reciprocity of multipath time delays. Therefore, in the Rel-17 NR discussion phase, 3GPP will discuss how to further simplify the codebook calculation complexity of UE by using the reciprocity of the multipath angle and delay of the uplink and downlink channels.

Similarly, the base station may perform beamforming on the CSI-RS, and transmit a spatial beam constructed by the candidate spatial basis vector on each port, and may also superimpose a delay on the port, so that the predefined frequency-domain basis vector becomes the target frequency-domain basis vector.

In a possible implementation manner, the relationship between the time delay and the frequency domain basis vector may be understood as that one time delay corresponds to one frequency domain basis vector.

It can be understood that, because the channel is a multipath channel, the terminal device receives a signal containing a plurality of time delays, and the terminal device can move the target frequency-domain basis vector to a predefined position by superimposing the time delays, and then can receive the signal under the time delay corresponding to the target frequency-domain basis vector.

After receiving the CSI-RS and obtaining the downlink channel matrix, the terminal device may combine the channels of each port in the frequency domain according to the predefined frequency domain basis vector, and obtain the channel state under the space-frequency domain beam pair, where the channel state under the space-frequency domain beam pair is the above-described W₂The channel state of each space-frequency domain beam corresponding to each port forms W₂。

Each frequency domain basis vector corresponds to a time delay, each frequency domain basis vector can be distinguished through a time domain, and all channels after time delay superposition are received by the terminal equipment, wherein the merging operation can be understood as multiplication of a specific frequency domain basis vector corresponding to a current port and a channel matrix, so that a channel state under the frequency domain basis vector can be obtained.

In summary, in the process of performing codebook search by the terminal device, W formed by the space-domain basis vectors₁Is transformed into a selection of CSI-RS ports, consisting of frequency-domain basis vectors

The calculation of (2) is transformed into a frequency domain basis vector known to the terminal device, thereby simplifying the computational complexity of the UE, and simultaneously, W can be obtained from the combination of the frequency domain basis vectors₂Thereby W can be determined₁、

W₂The terminal device may then determine the codebook W and feed back to the base station.

However, it can be determined based on the above description that, currently, only one space-frequency domain beam pair is considered to be transmitted on each CSI-RS port, when there are many space-frequency domain beam pairs that need to be transmitted by the base station, a larger number of CSI-RS ports needs to be configured, thereby occupying more downlink resources.

On the other hand, according to the NR protocol, if the maximum number of ports of the CSI-RS is 32, the number of space-frequency domain beam pairs may be greater than the number of ports of the CSI-RS.

In view of the above-mentioned problems, the present application proposes the following technical concepts: multiple space-frequency domain beam pairs can be sent on the same CSI-RS, and the terminal equipment can be ensured to distinguish the channel state under each space-frequency domain beam pair, so that the purpose of saving downlink resources is achieved.

The signal processing method provided by the present application is described in detail below with reference to specific embodiments, and fig. 2 is a flowchart of the signal processing method provided by the present application.

As shown in fig. 2, the method includes:

s201, a terminal device receives a channel state information reference signal (CSI-RS) resource sent by a network device, wherein the CSI-RS resource comprises P ports, each port corresponds to the channel state of K space-frequency domain beam pairs, P is an integer larger than or equal to 1, and K is an integer larger than or equal to 1.

In the CSI-RS of this embodiment, each CSI-RS may include P ports, and each port corresponds to a channel state of K spatial-frequency domain beam pairs (SD-FD pair), where a spatial-frequency domain beam pair is formed by a spatial basis vector and a frequency domain basis vector, and implementation manners of the spatial basis vector and the frequency domain basis vector have been described in the above embodiments, and are not described here again.

In one possible implementation, for example, K spatial-frequency domain beam pairs mapped on each port may be configured, where each spatial-frequency domain beam pair may determine a channel state corresponding to each respective spatial-frequency domain beam pair, and each port may correspond to the channel state of the K spatial-frequency domain beam pairs.

The number P of ports and the number K of spatial-frequency domain beam pairs may be selected according to actual requirements, which is not particularly limited in this embodiment.

Meanwhile, the specific implementation of each space-domain basis vector and frequency-domain basis vector included in each space-domain-frequency-domain beam pair in this embodiment may be set by the network device according to actual requirements, which is not particularly limited in this embodiment.

S202, the terminal equipment determines a codebook according to the CSI-RS resource and sends the codebook to the network equipment.

After receiving the CSI-RS resources, the terminal device may determine the codebook according to the CSI-RS resources, in this embodiment, each spatial-frequency domain beam is composed of one spatial basis vector and one frequency basis vector, and in a possible implementation manner, the terminal device may determine W according to the spatial basis vector in the spatial-frequency domain beam pair corresponding to each port₁And determining the frequency domain basis vectors according to the corresponding space-frequency domain wave beam pairs of each port

Then, merging processing is carried out according to each predefined frequency domain base vector, so that a channel state corresponding to each space-frequency domain beam pair is obtained, and W is further determined₂。

Specifically, the terminal device may perform channel estimation according to the CSI-RS resource to obtain a channel matrix of each port, and then the terminal device may multiply the channel matrix of each port by K frequency-domain basis vectors in the frequency-domain dimension, so as to obtain a channel state corresponding to each space-frequency-domain beam pair, where the operation of multiplying the matrix by the vector may correspond to the above-mentioned combining process, where the channel state corresponding to each space-frequency-domain beam pair may be taken as W₂To obtain W₂。

In determiningW₁、W₂、

After the three partial matrices, the terminal device may determine the codebook and transmit the codebook to the network device.

The signal processing method provided by the embodiment of the application comprises the following steps: the terminal equipment receives a channel state information reference signal (CSI-RS) resource sent by the network equipment, wherein the CSI-RS resource comprises P ports, each port corresponds to the channel state of K space-frequency domain beam pairs, P is an integer larger than or equal to 1, and K is an integer larger than or equal to 1. And the terminal equipment determines the codebook according to the CSI-RS resource and sends the codebook to the network equipment. By configuring P ports of the CSI-RS resources, each port corresponds to K space-frequency domain beam pairs, so that a large number of space-frequency domain beam pairs can be sent through a small number of CSI-RS ports, and downlink channel resources are effectively saved.

Meanwhile, in the embodiment of the application, each port is configured with K spatial-frequency domain beam pairs corresponding to the K ports on P ports of the CSI-RS resource, so that P multiplied by K beam pairs can be sent, and the problem that the number of the spatial-frequency domain beam pairs is larger than that of the CSI-RS ports due to the fact that the maximum port number of the CSI-RS is 32 is correspondingly solved, so that the number of the configured spatial-frequency domain beam pairs is not limited by the number of the CSI-RS ports is solved.

Based on the above embodiments, the present application may send multiple space-frequency domain beam pairs on the same CSI-RS, and meanwhile, it is further required to ensure that the terminal device can distinguish the channel state under each space-frequency domain beam pair, and an implementation manner for enabling the terminal device to distinguish the channel state under each space-frequency domain beam pair is described below with reference to fig. 3 and 4.

Fig. 3 is a schematic diagram of one possible implementation manner of configuring a spatial domain-frequency domain beam pair according to an embodiment of the present application, and fig. 4 is a schematic diagram of another possible implementation manner of configuring a spatial domain-frequency domain beam pair according to an embodiment of the present application.

In one possible implementation, as shown in fig. 3, it is assumed that the currently configured CSI-RS Resource includes 8 ports, that is, P is set to 8, where the configuration manner of the CSI-RS Resource may be, for example, as shown in fig. 3, see fig. 3, and it is assumed that the overhead of the CSI-RS is 1 RE (Resource Element)/PRB (Physical Resource Block)/port currently in a normal Cyclic Prefix (normal CP). The configuration of CSI-RS resources for 8 ports is the implementation shown by the hatching in fig. 3.

It can be understood that the terminal device may distinguish a space-frequency domain beam pair between each port, how to distinguish a space-frequency domain beam pair inside each port is to be implemented in this embodiment, in a possible implementation manner, K space-frequency domain beam pairs mapped by each port may be set, and indexes of each frequency domain basis vector are 0, 1, … … K-1, respectively.

For example, referring to fig. 3, currently, for port 1, K spatial-domain and frequency-domain beam pairs mapped by port 1 may be set, indexes of frequency-domain basis vectors are respectively 0, 1, … … K-1, and implementation manners of other ports are similar and are not described herein again.

By setting the indexes of the K space-frequency domain wave beams mapped by each port to the medium-frequency domain base vectors, the terminal equipment can simply and effectively distinguish the channel states under each space-frequency domain wave beam pair.

In another possible implementation, as shown in fig. 4, it is also assumed that the currently configured CSI-RS resource includes 8 ports, that is, P is set to 8.

It can be understood that the terminal device may distinguish the space-frequency domain beam pairs between the ports, and how to distinguish the space-frequency domain beam pairs inside the ports is to be implemented in this embodiment, in a possible implementation manner, K space-frequency domain beam pairs mapped by each port may be set, indexes of each frequency domain basis vector are 0 respectively,

wherein N is₃Is the vector length of the frequency domain basis vector.

For example, referring to fig. 4, currently for port 1, K spatial-frequency-domain beam pairs mapped by port 1 may be set, the index of each frequency-domain basis vector is 0,

the implementation of the other ports is similar, and the description is omitted here.

By setting the indexes of the K space-frequency domain wave beams mapped by each port to the medium-frequency domain base vectors, the terminal equipment can simply and effectively distinguish the channel states under each space-frequency domain wave beam pair, so that the terminal equipment can effectively determine the codebook based on the CSI-RS resources.

On the basis of the foregoing embodiment, in the signal processing method provided in the embodiment of the present application, the network device side may further send a CSI-RS to the terminal device, and the following describes an implementation manner of the network device side in the signal processing method provided in the embodiment of the present application with reference to fig. 5, where fig. 5 is a flowchart of a signal processing method provided in another embodiment of the present application.

As shown in fig. 5, the method includes:

s501, the network equipment sends CSI-RS resources to the terminal equipment, wherein the CSI-RS resources comprise P ports, each port corresponds to the channel state of K space-frequency domain beam pairs, P is an integer larger than or equal to 1, and K is an integer larger than or equal to 1.

S502, the network equipment receives the codebook determined by the terminal equipment according to the CSI-RS resource.

Various possible implementation manners in this embodiment are similar to the implementation manner of the terminal device side, and specific implementation thereof may refer to the description of the above embodiment, which is not described herein again.

The signal processing method provided by the embodiment of the application comprises the following steps: the network equipment sends CSI-RS resources to the terminal equipment, wherein the CSI-RS resources comprise P ports, each port corresponds to the channel state of K space-frequency domain beam pairs, P is an integer larger than or equal to 1, and K is an integer larger than or equal to 1. And the network equipment receives the codebook determined by the terminal equipment according to the CSI-RS resource. The network equipment configures P ports of the CSI-RS resources, each port corresponds to K space-frequency domain beam pairs, so that a large number of space-frequency domain beam pairs can be sent through a small number of CSI-RS ports, and downlink channel resources are effectively saved.

Fig. 6 is a schematic structural diagram of a signal processing apparatus according to an embodiment of the present application. As shown in fig. 6, the apparatus 60 includes: the device comprises a receiving module 601 and a processing module 602.

A receiving module 601, configured to receive, by a terminal device, a CSI-RS resource of a channel state information reference signal sent by a network device, where the CSI-RS resource includes P ports, each port corresponds to a channel state of K space-frequency domain beam pairs, P is an integer greater than or equal to 1, and K is an integer greater than or equal to 1;

a processing module 602, configured to determine a codebook according to the CSI-RS resource and send the codebook to the network device.

wherein, the N is₃Is the vector length of the frequency domain basis vector.

In one possible design, the processing module 602 is specifically configured to:

The apparatus provided in this embodiment may be used to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.

Fig. 7 is a schematic structural diagram of a signal processing apparatus according to another embodiment of the present application. As shown in fig. 7, the apparatus 70 includes: a sending module 701 and a receiving module 702.

A sending module 701, configured to send, by a network device, a CSI-RS resource to a terminal device, where the CSI-RS resource includes P ports, and each port corresponds to a channel state of K space-frequency domain beam pairs, where P is an integer greater than or equal to 1, and K is an integer greater than or equal to 1;

a receiving module 702, configured to receive, by the network device, a codebook determined by the terminal device according to the CSI-RS resource.

Fig. 8 is a schematic diagram of a hardware structure of a signal processing apparatus according to an embodiment of the present application, and as shown in fig. 8, a signal processing apparatus 80 according to the embodiment includes: a processor 801 and a memory 802; wherein

A memory 802 for storing computer-executable instructions;

the processor 801 is configured to execute the computer-executable instructions stored in the memory to implement the steps performed by the signal processing method in the foregoing embodiments. Reference may be made in particular to the description relating to the method embodiments described above.

Alternatively, the memory 802 may be separate or integrated with the processor 801.

When the memory 802 is provided separately, the signal processing apparatus further includes a bus 803 for connecting the memory 802 and the processor 801.

An embodiment of the present application further provides a computer-readable storage medium, in which computer-executable instructions are stored, and when a processor executes the computer-executable instructions, the signal processing method performed by the above signal processing device is implemented.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application.

It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.

The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A signal processing method, comprising:

2. The method of claim 1, wherein the spatial-frequency beam pair is comprised of one spatial basis vector and one frequency basis vector.

3. The method of claim 2, wherein each of the K space-frequency domain beam pairs mapped by each of the ports has an index of 0, 1, … … K-1.

4. The method of claim 2, wherein each of the K space-frequency domain beam pairs mapped by each of the ports has an index of 0,

wherein, the N is₃Is the vector length of the frequency domain basis vector.

5. The method according to any of claims 1-4, wherein the terminal device determines a codebook according to the CSI-RS resource, comprising:

6. A signal processing method, comprising:

7. The method of claim 6, wherein the spatial-frequency beam pair is comprised of one spatial basis vector and one frequency basis vector.

8. The method of claim 7, wherein each of the K space-frequency domain beam pairs mapped by each of the ports has an index of 0, 1, … … K-1.

9. According to the rightThe method of claim 7, wherein each of the K space-frequency domain beam pairs mapped by each of the ports has an index of 0,

wherein, the N is₃Is the vector length of the frequency domain basis vector.

10. A signal processing apparatus, characterized by comprising:

11. The apparatus of claim 10, wherein the spatial-frequency beam pair is comprised of one spatial basis vector and one frequency basis vector.

12. The apparatus of claim 11, wherein each of the K space-frequency domain beam pairs mapped by each of the ports has an index of 0, 1, … … K-1.

13. The apparatus of claim 11, wherein each of the K space-frequency domain beam pairs mapped by each of the ports has an index of 0,

wherein, the N is₃Is the vector length of the frequency domain basis vector.

14. The apparatus according to any one of claims 10 to 13, wherein the processing module is specifically configured to:

15. A signal processing apparatus, characterized by comprising:

16. The apparatus of claim 15, wherein the spatial-frequency beam pair is comprised of one spatial basis vector and one frequency basis vector.

17. The apparatus of claim 16, wherein each of the K space-frequency domain beam pairs mapped by each of the ports has an index of 0, 1, … … K-1.

18. The apparatus of claim 16, wherein each of the K space-frequency domain beam pairs mapped by each of the ports has an index of 0,

wherein, the N is₃Is the vector length of the frequency domain basis vector.

19. A signal processing apparatus characterized by comprising:

a memory for storing a program;

a processor for executing the program stored by the memory, the processor being configured to perform the method of any of claims 1 to 5 or 6 to 9 when the program is executed.

20. A computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1 to 5 or 6 to 9.