CN117856989A

CN117856989A - Reference signal configuration method for delay Doppler domain, communication device and storage medium

Info

Publication number: CN117856989A
Application number: CN202211210735.8A
Authority: CN
Inventors: 张萌
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2024-04-09

Abstract

The application provides a method for configuring a reference signal of a delay Doppler domain, a communication device and a storage medium, wherein the method for configuring the reference signal of the delay Doppler domain comprises the following steps: and transmitting resource configuration information of the reference signal, wherein the resource configuration information is used for indicating the size of a reference unit, and the reference unit comprises reference signal resources and guard interval resources, so that a scheme for indicating the reference signal in a delay Doppler domain is provided.

Description

Reference signal configuration method for delay Doppler domain, communication device and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for configuring a reference signal in a delay doppler domain, a communications device, and a storage medium.

Background

Orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) is affected by multipath channels and doppler shifts in high mobility environments, and channel estimation and equalization becomes very difficult. In order to solve the problem of doppler shift of the conventional OFDM waveform in a high-speed moving scene, a new waveform called an orthogonal time-frequency space (Orthogonal Time Frequency Space, OTFS) is recently proposed, and is becoming a hot spot of research. The orthogonal time-frequency space explores the delay-doppler (delay-doppler) domain, which is different from the time-frequency domain used by conventional OFDM-based waveforms. OTFS modulation presents significant advantages in multipath delay-doppler channels, where each path exhibits a different delay and doppler shift.

OTFS converts a fading time-varying wireless channel into a non-fading, time-independent interaction with the transmitted symbols. In this new mode, all symbols pass through the same channel and the delay-doppler diversity branches of all channels are combined. Since channel state acquisition is done in the time independent delay-doppler domain, accurate channel estimation can be achieved even if high mobility exists. In addition, since the antenna port reference signals are carried in the delay-doppler domain, they can be packed very efficiently, allowing flexible multiplexing of a large number of reference signals based on the delay and doppler spread characteristics of the individual channels.

However, how to indicate the reference signal used for channel estimation in the delay-doppler domain is a problem to be solved.

Disclosure of Invention

The application provides a reference signal configuration method of a delay Doppler domain, a communication device and a storage medium, and provides a scheme for indicating a reference signal in the delay Doppler domain.

In order to achieve the above purpose, the present application provides the following technical solutions:

in a first aspect, a method for configuring a reference signal in a delay-doppler domain is provided, where the method for configuring a reference signal in a delay-doppler domain includes: and transmitting resource configuration information of the reference signal, wherein the resource configuration information is used for indicating the size of a reference unit, and the reference unit comprises reference signal resources and guard interval resources.

Optionally, the resource configuration information is further used to indicate a distribution density of the reference cells in a delay-doppler domain.

Optionally, the distribution density comprises a distribution interval of the reference cells over a delay domain in the delay-doppler domain.

Optionally, the distribution density further comprises a distribution interval of the reference unit over a doppler domain in the delay-doppler domain.

Optionally, the resource configuration information is further used to indicate a location of the reference signal resource in the reference unit.

Optionally, the size of the reference unit includes a first number of resource blocks occupied by the reference unit over a delay domain in the delay-doppler domain and/or a second number of resource blocks occupied by the reference unit over a doppler domain in the delay-doppler domain.

Optionally, the first number is selected from a first set of sizes corresponding to a total number of first resource blocks on a delay domain in the delay-doppler domain; the second number is selected from a second set of sizes corresponding to a total number of second resource blocks over a doppler domain in the delay-doppler domain.

Optionally, before the sending the resource configuration information of the reference signal, the method further includes: and sending a first corresponding relation between the total number of the first resource blocks and the first size set and a second corresponding relation between the total number of the second resource blocks and the first size set.

In a second aspect, the present application further provides a method for configuring a reference signal in a delay-doppler domain, where the method for configuring a reference signal in a delay-doppler domain includes: and receiving resource configuration information of a reference signal, wherein the resource configuration information is used for indicating the size of a reference unit, and the reference unit comprises reference signal resources and guard interval resources.

In a third aspect, the present application also provides a communication apparatus, including: and the communication module is used for sending resource configuration information of the reference signal, wherein the resource configuration information is used for indicating the size of a reference unit, and the reference unit comprises reference signal resources and guard interval resources.

In a fourth aspect, the present application also provides a communication apparatus, including: and the communication module is used for receiving resource configuration information of the reference signal, wherein the resource configuration information is used for indicating the size of a reference unit, and the reference unit comprises reference signal resources and guard interval resources.

In a fifth aspect, there is provided a computer readable storage medium having stored thereon a computer program for execution by a processor to perform any one of the methods provided in the first or second aspects.

In a sixth aspect, there is provided a communications apparatus comprising a memory having stored thereon a computer program executable on the processor, and a processor executing the computer program to perform any one of the methods provided in the first aspect.

In a seventh aspect, there is provided a communications apparatus comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterised in that the processor is operative to execute the computer program to perform any one of the methods provided in the second aspect.

In an eighth aspect, there is provided a computer program product having a computer program stored thereon, the computer program being executable by a processor to perform any one of the methods provided in the first or second aspects.

A ninth aspect provides a communication system comprising the above terminal device and the above network device.

In a tenth aspect, embodiments of the present application further provide a chip (or data transmission device) on which a computer program is stored, which when executed by the chip, implements the steps of the method described above.

Compared with the prior art, the technical scheme of the embodiment of the application has the following beneficial effects:

in the technical scheme of the application, the network device can send the resource configuration information of the reference signal to the terminal device, wherein the resource configuration information of the reference signal is used for indicating the size of the reference unit. The relative positions of the reference signal resource and the guard interval resource in the reference unit are fixed, and the terminal device can dynamically determine the resource position of the reference signal in the delay-doppler domain under the condition that the initial position of the reference unit in the delay-doppler domain is fixed, so that the reference signal is correctly received at the resource position, and the normal development of channel estimation is ensured.

Further, the resource configuration information is also used to indicate the distribution density of the reference cells in the delay-doppler domain. The distribution density includes a distribution interval of the reference cells over a delay domain in the delay-doppler domain and/or a distribution interval of the reference cells over the doppler domain. In the present application, when the number of reference units in the delay-doppler domain is multiple, the terminal device needs to know the resource position of each reference unit in the delay-doppler domain, so that the network device may indicate to the terminal device the distribution interval of the reference units in the delay domain and/or the distribution interval of the reference units in the doppler domain in the resource configuration information, so that the terminal device can accurately know the resource positions of the reference signals, and further achieve correct reception of the reference signals.

Further, the resource configuration information is also used to indicate the location of the reference signal resource in the reference cell. In the application, the network device can dynamically indicate the position of the reference signal resource in the reference unit under the condition that the relative positions of the reference signal resource and the guard interval resource are not fixed, so that the terminal device can accurately acquire the resource position of the reference signal, and further correct receiving of the reference signal is realized.

Drawings

Fig. 1 is an interactive flowchart of a method for configuring a reference signal of a delay-doppler domain according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a reference unit according to an embodiment of the present application;

fig. 3 is a schematic diagram of a distribution of reference units in a delay-doppler domain according to an embodiment of the present application;

FIG. 4 is a schematic diagram of another reference cell distribution in the delay Doppler domain according to an embodiment of the present application;

fig. 5 is a schematic diagram of a distribution of reference cells in a delay-doppler domain according to an embodiment of the present application;

FIG. 6 is a schematic diagram of another reference unit provided in an embodiment of the present application;

figure 7 is a schematic diagram of the size of a delay-doppler domain provided by an embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 9 is a schematic hardware structure of a communication device according to an embodiment of the present application.

Detailed Description

Communication systems to which embodiments of the present application are applicable include, but are not limited to, long term evolution (Long Term Evolution, LTE) systems, fifth generation (5G) systems, NR systems, and future evolution systems or multiple communication convergence systems. The 5G system may be a Non-independent Networking (NSA) 5G system or an independent networking (SA) 5G system. The technical scheme is also applicable to different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-Everything (Vehicle-to-Everything) architecture, and the like.

The present application relates generally to communication between a terminal device and a network device. Wherein:

the network device in the embodiments of the present application may also be referred to as an access network device, for example, may be a Base Station (BS) (also referred to as a Base Station device), where the network device is a device deployed in a radio access network (Radio Access Network, RAN) to provide a wireless communication function. For example, the device for providing base station functionality in the second Generation (2 nd-Generation, 2G) network comprises a base radio transceiver station (Base Transceiver Station, BTS), the device for providing base station functionality in the third Generation (3 rd-Generation, 3G) network comprises a node B (NodeB), the device for providing base station functionality in the fourth Generation (4 th-Generation, 4G) network comprises an evolved NodeB (eNB), the device for providing base station functionality in the wireless local area network (Wireless Local Area Networks, WLAN) is an Access Point (AP), the next Generation base station node (next Generation Node Base station, gNB) in the NR is a base station node (next Generation Node Base station, gNB) in the NR, and the node B (ng-eNB) continues to evolve, wherein the gNB and the terminal devices communicate using NR technology, and the gNB and the terminal devices communicate using evolved universal terrestrial radio Access (Evolved Universal Terrestrial Radio Access, E-UTRA) technology, each of which may be connected to the 5G core network. The network device in the embodiment of the present application further includes a device that provides a base station function in a new communication system in the future, and the like.

The terminal device (terminal equipment) in embodiments of the present application may refer to various forms of access terminals, subscriber units, subscriber stations, mobile Stations (MSs), remote stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents, or user equipment. The terminal device may also be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc., as the embodiments of the application are not limited in this respect. The terminal device may also be referred to as a User Equipment (UE), a terminal, etc.

As described in the background, how to indicate the reference signal used for channel estimation in the delay-doppler domain is a problem to be solved.

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 1, the method provided in the present application includes:

step 101: the network device transmits resource configuration information of the reference signal. Correspondingly, the terminal equipment receives the resource configuration information of the reference signal. The resource configuration information is used to indicate a size of a reference unit including reference signal resources and guard interval resources.

Step 102: the network device transmits a reference signal. Accordingly, the terminal device receives the reference signal.

It will be appreciated that in a specific implementation, the reference signal configuration method may be implemented in a software program, where the software program runs on a processor integrated within a chip or a chip module. The method may also be implemented by combining software with hardware, which is not limited in this application.

In this embodiment, the reference signal resource may be used to carry the reference signal. The reference signal may be a reference signal for channel estimation.

In a specific embodiment of step 101, the resource configuration information may be carried in higher layer signaling.

For example, the network device sends radio resource control (Radio Resource Control, RRC) signaling, which includes resource configuration information.

For another example, the network device sends a media access Control (Media Access Control, MAC) Element (CE), which includes the resource configuration information.

Referring also to fig. 2, fig. 2 shows a pattern of reference cells. Illustratively, the reference cell is 5 Resource Element (RE) by 5RE in size, i.e., the reference cell width and length are both 5RE. The reference signal resource 22 is located at the center of the reference unit, and the portion of the reference unit other than the reference signal resource 22 is the guard interval resource 21. Wherein the guard interval resources 21 are arranged around the reference signal resources 22. Illustratively, the reference signal resource 22 occupies one resource element. Where REs may be resource elements of a delay-doppler domain. The reference signal resource 22 can ensure that the reference signal located at the reference signal resource 22 is not interfered by the data, thereby ensuring that the data does not affect the channel estimation. Since the guard interval resource 21 is left enough, the diffusion caused by the two-dimensional convolution of the data and the channel and the diffusion caused by the two-dimensional convolution of the reference signal and the channel do not overlap each other, so that the accuracy of channel estimation can be ensured.

It should be noted that, the relative positions of the reference signal resource and the guard interval resource may be pre-agreed by the communication standard protocol, for example, the reference signal resource is located in the center of the reference unit, which is not limited in this application.

Specifically, if the length and the width of the reference unit are identical, the size of the reference unit indicated in the resource allocation information is one of the length and the width of the reference unit. If the length and width of the reference cell are not identical, the size of the reference cell indicated in the resource allocation information is the length and width of the reference cell.

In a specific embodiment, the number of the reference units in the delay-doppler domain may be pre-agreed or specified, and the initial positions of the reference units in the delay-doppler domain may also be pre-agreed or specified, so that after knowing the size of the reference units through the resource configuration information, the terminal device may determine the resource positions of the reference signals in the delay-doppler domain according to the resource configuration information.

Illustratively, referring to fig. 2 and 3 together, the number of reference cells in the delay-doppler domain is one, and the initial position of the reference cells in the delay-doppler domain is P1. After knowing that the size of the reference element is 5re×5RE, the terminal device can determine the position of the reference element in the delay-doppler domain, as shown in fig. 3, and further determine the resource position of the reference signal, that is, the position of the reference signal resource in the delay-doppler domain.

It should be noted that, the initial position of the reference unit in the delay-doppler domain shown in fig. 3 is the position of the resource element in the lower left corner of the reference unit in the delay-doppler domain, and the initial position may actually be the position of any one of the resource elements in the reference unit in the delay-doppler domain, which is not limited in this application.

Further in the implementation of step 102, the terminal device may receive a reference signal at the resource location.

In this embodiment, the terminal device may dynamically determine the resource location of the reference signal in the delay-doppler domain, so as to correctly receive the reference signal at the resource location, thereby ensuring normal development of channel estimation.

In one non-limiting embodiment, the number of reference cells in the delay-doppler domain is multiple, in which case the network device may also indicate the distribution density of reference cells in the delay domain and or in the doppler domain in the resource configuration information. The form of the distribution density mainly includes mode 1 and mode 2.

Mode 1, the distribution density includes a distribution interval of the reference cells over the delay domain in the delay-doppler domain. In particular, the distribution interval represents the distance of adjacent reference cells over the delay domain in the delay-doppler domain. The unit of distance may be a resource element.

In this embodiment, the number of reference units in the delay-doppler domain is plural, and the network device only needs to indicate the distribution interval of the reference units in the delay-doppler domain.

For example, referring to fig. 4, the number of reference units in the delay-doppler domain is 4 and the distribution interval is 1 RE. The distribution of the 4 reference cells in the delay-doppler domain is shown in fig. 4. The terminal device may determine the resource locations of the 4 reference signals.

Mode 2, the distribution density includes a distribution interval of the reference cells over the delay-doppler domain and a distribution interval of the reference cells over the delay-doppler domain. In particular, the distribution interval of reference cells over the Doppler domain in the delay-Doppler domain represents the distance of adjacent reference cells over the Doppler domain in the delay-Doppler domain.

In this embodiment, the number of reference units in the delay-doppler domain is multiple, and the number of reference units in the delay-doppler domain is multiple, so the network device needs to indicate the distribution interval of the reference units in the delay-doppler domain and in the doppler domain.

For example, referring to fig. 5, the number of reference units in the delay-doppler domain is 2 and the distribution interval is 1 RE. The number of reference cells in the doppler domain in the delay-doppler domain is 2 and the distribution interval is 2 REs. The distribution of the 4 reference cells in the delay-doppler domain is shown in fig. 5. The terminal device may determine the resource locations of the 4 reference signals.

The foregoing embodiments are described with reference signal resources centered in a reference cell. In practical applications, the reference signal resource may be located at any position in the reference cell. In this case, the network device may indicate the location of the reference signal resource in the reference cell in the resource configuration information.

For example, referring to fig. 6, the reference unit has a size of 4re×4RE. The reference signal resource 62 is located in the reference cell at coordinates (1, 1), that is, the reference signal resource 62 is located in the second row and the second column of the reference cell. The guard interval resources 60 are arranged around the reference signal resources 62.

Of course, if the location of the reference signal resource in the reference cell is not indicated in the resource configuration information, the reference signal resource may be located at the center of the reference cell by default.

In one non-limiting embodiment, the resource configuration information may specifically include a first number Y of resource blocks occupied by the reference unit over the delay domain in the delay-doppler domain and/or a second number X of resource blocks occupied by the reference unit over the doppler domain in the delay-doppler domain when indicating the size of the reference unit.

Further, the specific values of the first number Y and the second number X may be selected according to the actual channel delay and doppler shift. Wherein the delay corresponding to the first number Y is not less than 2 times of the maximum delay, and the Doppler corresponding to the second number X is not less than 4 times of the maximum Doppler shift.

Further, the first number Y is related to a total number M of first resource blocks in the delay-doppler domain, and the second number X is related to a total number N of second resource blocks in the delay-doppler domain. Specifically, the first number Y is selected from a first set of sizes corresponding to a total number M of first resource blocks over a delay domain in the delay-doppler domain; the second number X is selected from a second set of sizes corresponding to a total number N of second resource blocks over the doppler domain in the delay-doppler domain. Wherein, each size in the first size set is smaller than or equal to the total number M of the first resource blocks, and each size in the second size set is smaller than or equal to the total number N of the second resource blocks.

For example, referring to fig. 7, the total number of the first resource blocks in the delay domain in the delay-doppler domain shown in fig. 7 is M, and the total number of the second resource blocks in the doppler domain is N.

Tables 1 and 2 show the correspondence between the first number Y and the total number M of the first resource blocks, and the correspondence between the second number X and the total number N of the second resource blocks, respectively.

TABLE 1

M	Y
		6	3
10	3,5
		16	3,5,7

As shown in table 1, when the total number of first resource blocks M is 6, the first number Y may be 3; when the total number M of the first resource blocks is 10, the first number Y may be 3 or 5; when the total number M of the first resource blocks is 16, the first number Y may be 3, or may be 5, or may be 7.

TABLE 2

N	X
		6	3
10	3,5
		16	3,5,7

As shown in table 2, when the total number of first resource blocks N is 6, the first number X may be 3; when the total number N of the first resource blocks is 10, the first number X may be 3 or 5; when the total number N of the first resource blocks is 16, the first number X may be 3, or may be 5, or may be 7.

In a specific embodiment, the network device may send, to the terminal device, a first correspondence between the total number of the first resource blocks and the first size set, and a second correspondence between the total number of the second resource blocks and the first size set.

For example, in the case that the current first number of resource blocks is determined, the terminal device may select the first number from the first size set corresponding to the current first number of resource blocks. The terminal device may randomly select a first number in the first set of sizes. Correspondingly, the terminal equipment selects a second number from a second size set corresponding to the current second number of resource blocks. The terminal device may randomly select a second number in the second set of sizes.

For example, in the case that the first size set and the second size set include a plurality of sizes, the network device may send, in addition to the first correspondence and the second correspondence, an additional indication of the value selected in the first size set and/or the value selected in the second size set.

For more specific implementations of the embodiments of the present application, please refer to the foregoing embodiments, and the details are not repeated here.

Referring to fig. 8, fig. 8 illustrates a communication device 80, where the communication device 80 may include:

a communication module 801, configured to send resource configuration information of a reference signal, where the resource configuration information is used to indicate a size of a reference unit, and the reference unit includes a reference signal resource and a guard interval resource.

In a specific implementation, the above-mentioned communication device 80 may correspond to a chip with a reference signal configuration function in a network apparatus, such as an SOC, a baseband chip, etc.; or the network equipment comprises a chip module with a reference signal configuration function; or corresponds to a chip module having a chip with a data processing function or corresponds to a network device.

In another embodiment, the communication module 801 is configured to receive resource configuration information of a reference signal, where the resource configuration information is configured to indicate a size of a reference unit, and the reference unit includes a reference signal resource and a guard interval resource.

In a specific implementation, the above-mentioned communication device 80 may correspond to a Chip with a reference signal configuration function in a terminal device, such as a System-On-a-Chip (SOC), a baseband Chip, etc.; or the terminal equipment comprises a chip module with a reference signal configuration function; or corresponds to a chip module having a chip with a data processing function or corresponds to a terminal device.

Other relevant descriptions about the communication device 80 may refer to those in the foregoing embodiments, and are not repeated here.

With respect to each of the apparatuses and each of the modules/units included in the products described in the above embodiments, it may be a software module/unit, a hardware module/unit, or a software module/unit, and a hardware module/unit. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented in hardware such as a circuit, or at least part of the modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same component (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device, product, or application to or integrated with the terminal device, each module/unit included in the device may be implemented in hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal device, or at least some modules/units may be implemented in a software program, where the software program runs on a processor integrated within the terminal device, and the remaining (if any) part of the modules/units may be implemented in hardware such as a circuit.

The embodiment of the application also discloses a storage medium, which is a computer readable storage medium, and a computer program is stored on the storage medium, and the computer program can execute the steps of the method shown in fig. 1 when running. The storage medium may include Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic or optical disks, and the like. The storage medium may also include non-volatile memory (non-volatile) or non-transitory memory (non-transitory) or the like.

Referring to fig. 9, the embodiment of the application further provides a hardware structure schematic diagram of the communication device. The apparatus comprises a processor 901, a memory 902 and a transceiver 903.

The processor 901 may be a general purpose central processing unit (central processing unit, CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of programs in accordance with aspects of the present application. Processor 901 may also include multiple CPUs, and processor 901 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores for processing data (e.g., computer program instructions).

The memory 902 may be a ROM or other type of static storage device, a RAM or other type of dynamic storage device that can store static information and instructions, or that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, as described herein. The memory 902 may exist alone (in this case, the memory 902 may be located outside or inside the apparatus) or may be integrated with the processor 901. Wherein the memory 902 may contain computer program code. The processor 901 is configured to execute computer program codes stored in the memory 902, thereby implementing the methods provided in the embodiments of the present application.

The processor 901, the memory 902 and the transceiver 903 are connected by a bus. The transceiver 903 is used to communicate with other devices or communication networks. Alternatively, the transceiver 903 may include a transmitter and a receiver. The means for implementing the receiving function in the transceiver 903 may be regarded as a receiver for performing the steps of receiving in the embodiments of the present application. The means for implementing the transmitting function in the transceiver 903 may be regarded as a transmitter for performing the steps of transmitting in the embodiments of the present application.

While the schematic structural diagram shown in fig. 9 is used to illustrate the structure of the terminal device according to the above embodiment, the processor 901 is configured to control and manage the actions of the terminal device, for example, the processor 901 is configured to support the terminal device to perform the steps 101 and 102 in fig. 1, and/or the actions performed by the terminal device in other processes described in the embodiments of the present application. The processor 901 may communicate with other network entities, such as with the network devices described above, via the transceiver 903. The memory 902 is used for storing program codes and data of the terminal device.

While the schematic structural diagram shown in fig. 9 is used to illustrate the structure of the network device in the foregoing embodiment, the processor 901 is configured to control and manage the actions of the network device, for example, the processor 901 is configured to support the network device to perform the steps 101 and 102 in fig. 1, and/or the actions performed by the network device in other processes described in the embodiments of the present application. The processor 901 may communicate with other network entities, such as with the terminal devices described above, via the transceiver 903. The memory 902 is used to store program codes and data for the network device.

The embodiment of the application defines a unidirectional communication link from an access network to terminal equipment as a downlink, wherein data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; and the unidirectional communication link from the terminal equipment to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is called as uplink direction.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" indicates that the front and rear associated objects are an "or" relationship.

The term "plurality" as used in the embodiments herein refers to two or more.

The first, second, etc. descriptions in the embodiments of the present application are only used for illustrating and distinguishing the description objects, and no order division is used, nor does it indicate that the number of the devices in the embodiments of the present application is particularly limited, and no limitation on the embodiments of the present application should be construed.

The "connection" in the embodiments of the present application refers to various connection manners such as direct connection or indirect connection, so as to implement communication between devices, which is not limited in any way in the embodiments of the present application.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with the embodiments of the present application are all or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus, and system may be implemented in other manners. For example, the device embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.

Although the present application is disclosed above, the present application is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention shall be defined by the appended claims.

Claims

1. A method for configuring a reference signal for a delay-doppler domain, comprising:

and transmitting resource configuration information of the reference signal, wherein the resource configuration information is used for indicating the size of a reference unit, and the reference unit comprises reference signal resources and guard interval resources.

2. The reference signal configuration method of claim 1, wherein the resource configuration information is further used to indicate a distribution density of the reference cells in a delay-doppler domain.

3. The reference signal configuration method of claim 2, wherein the distribution density comprises a distribution interval of the reference cells over a delay domain in the delay-doppler domain.

4. The reference signal configuration method of claim 3, wherein the distribution density further comprises a distribution interval of the reference cells over a doppler domain in the delay-doppler domain.

5. The reference signal configuration method of claim 1, wherein the resource configuration information is further used to indicate a location of the reference signal resource in the reference unit.

6. The reference signal configuration method according to claim 1, wherein the size of the reference unit comprises a first number of resource blocks occupied by the reference unit over a delay domain in the delay-doppler domain and/or a second number of resource blocks occupied by the reference unit over a doppler domain in the delay-doppler domain.

7. The method of claim 6, wherein the first number is selected from a first set of sizes corresponding to a total number of first resource blocks over a delay domain in the delay-doppler domain; the second number is selected from a second set of sizes corresponding to a total number of second resource blocks over a doppler domain in the delay-doppler domain.

8. The reference signal configuration method according to claim 7, wherein before the transmitting the resource configuration information of the reference signal, further comprising:

and sending a first corresponding relation between the total number of the first resource blocks and the first size set and a second corresponding relation between the total number of the second resource blocks and the first size set.

9. A method for configuring a reference signal for a delay-doppler domain, comprising:

and receiving resource configuration information of a reference signal, wherein the resource configuration information is used for indicating the size of a reference unit, and the reference unit comprises reference signal resources and guard interval resources.

10. The reference signal configuration method of claim 9, wherein the resource configuration information is further used to indicate a distribution density of the reference cells in a delay-doppler domain.

11. The reference signal configuration method of claim 10, wherein the distribution density comprises a distribution interval of the reference cells over a delay domain in the delay-doppler domain.

12. The reference signal configuration method of claim 11, wherein the distribution density further comprises a distribution interval of the reference cells over a doppler domain in the delay-doppler domain.

13. The reference signal configuration method of claim 9, wherein the resource configuration information is further used to indicate a location of the reference signal resource in the reference unit.

14. The reference signal configuration method according to claim 9, wherein the size of the reference unit comprises a first number of resource blocks occupied by the reference unit over a delay domain in the delay-doppler domain and/or a second number of resource blocks occupied by the reference unit over a doppler domain in the delay-doppler domain.

15. The method of claim 14, wherein the first number is selected from a first set of sizes corresponding to a total number of first resource blocks over a delay domain in the delay-doppler domain; the second number is selected from a second set of sizes corresponding to a total number of second resource blocks over a doppler domain in the delay-doppler domain.

16. A communication device, comprising:

and the communication module is used for sending resource configuration information of the reference signal, wherein the resource configuration information is used for indicating the size of a reference unit, and the reference unit comprises reference signal resources and guard interval resources.

17. A communication device, comprising:

and the communication module is used for receiving resource configuration information of the reference signal, wherein the resource configuration information is used for indicating the size of a reference unit, and the reference unit comprises reference signal resources and guard interval resources.

18. A computer readable storage medium having stored thereon a computer program, characterized in that the computer program when run by a computer performs the steps of the reference signal configuration method of any of claims 1 to 15.

19. A network device comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor executes the steps of the reference signal configuration method according to any of claims 1 to 8 when the computer program is executed by the processor.

20. A terminal device comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor executes the steps of the reference signal configuration method according to any of claims 9 to 15 when the computer program is executed by the processor.