WO2019136648A1

WO2019136648A1 - Method for configuring reference signal, terminal device, and network device

Info

Publication number: WO2019136648A1
Application number: PCT/CN2018/072161
Authority: WO
Inventors: 林亚男
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-01-10
Filing date: 2018-01-10
Publication date: 2019-07-18
Also published as: CN111345082A; CN111345082B

Abstract

Provided are a method for configuring a reference signal, a terminal device, and a network device. The method comprises: a terminal device receives configuration information of a demodulation reference signal (DMRS); the terminal device determines a DMRS resource on the basis of the configuration information. In the embodiments of the present application, a terminal device receives the configuration information of a DMRS sent by a network device, and determines a DMRS resource on the basis of the configuration information, so that the randomness of interference can be improved as much as possible, inconstant or frequency conflict between users using the same DMRS can be avoided. Therefore, when the DMRS of the terminal device conflicts with other terminals, the user identification performance is effectively improved and and the system transmission efficiency is enhanced.

Description

Method, terminal device and network device for configuring reference signal

Technical field

Embodiments of the present invention relate to the field of communications, and, more particularly, to a method of configuring a reference signal, a terminal device, and a network device.

Background technique

At present, the fifth generation mobile communication technology (5-Generation, 5G) New Radio (NR) system introduces intra-slot and intra-slot frequency hopping. Moreover, the intra-slot frequency hopping discussion is quite adequate, but the inter-slot has no clear conclusions. Therefore, the current intra-slot frequency hopping is not working.

In addition, 5G also introduces Ultra-Reliable and Low Latency Communication (URLLC), which is characterized by ultra-high reliability (for example, 99.999) in extreme delays (for example, 1ms). %) transmission. In order to achieve this goal, the concept of Grant Free is proposed. Grant free adopts the resource configuration mode of pre-configured\semi-permanent state, and the terminal can transmit on the configured resources according to service requirements. This technology avoids the process of the resource request (Schedule request, SR) and the buffer status report (BSR), which increases the effective transmission time of the terminal.

However, in a Grant free transmission, the location at which the user initiates the transmission is flexible, including determining the location and starting at any location. Since the access user is uncontrollable at any location, the access user interference problem needs to be considered in the design of frequency hopping.

For example, as shown in FIG. 1, when User 1 and User 2 use the same Demodulation Reference Signal (DMRS), the DMRS collision between User 1 and User 2 always occurs. The DMRS conflict not only affects data demodulation, but also causes unrecognized users.

Summary of the invention

A method, a terminal device, and a network device for configuring a reference signal are provided. It can reduce or avoid DMRS resource conflicts and improve system transmission efficiency.

In a first aspect, a method of configuring a reference signal is provided, comprising:

The terminal device receives configuration information of the demodulation reference signal DMRS;

The terminal device determines a DMRS resource based on the configuration information.

In the embodiment of the present application, the terminal device receives the DMRS configuration information sent by the network device, and determines the DMRS resource based on the configuration information, so as to improve the randomness of the interference as much as possible, and avoid the same or frequent conflicts of the same user. When the DMRS of the terminal device conflicts with other terminals, the performance of the user identification can be effectively improved, and the system transmission efficiency is improved.

In some possible implementation manners, the configuration information includes information used to indicate whether the DMRS is transmitted in a frequency hopping manner.

In some possible implementation manners, the DMRS resource includes at least one of the following resources:

DMRS based sequence resources, DMRS port resources, DMRS cyclic shift resources, and DMRS time-frequency resources.

In some possible implementations, the configuration information includes at least one of the following information:

a first parameter DMRS_start, a second frequency hopping parameter DMRS _offset , a third frequency hopping parameter C_DMRS, a resource number N_DMRS of the DMRS, an available resource number N of the terminal device, and a DMRS resource pattern, wherein the DMRS_start represents And the DMRS _{offset is} used by the terminal device to obtain a next hop resource location, where the C_DMRS is used to obtain the DMRS resource.

In some possible implementation manners, the determining, by the terminal device, the DMRS resource, based on the configuration information, includes:

The terminal device determines the DMRS resource according to the following formula:

DMRS(n)=DMRS_start+Random(n);

The DMRS(n) represents the DMRS resource, the Random(n) represents a random function, and the n is a non-negative integer.

DMRS(n)=Random(C_DMRS);

The DMRS(n) represents the DMRS resource, the mod represents a modulo operation, and the n is a non-negative integer.

DMRS(n)=(DMRS_start+(nmodN)*DMRS _offset )modN_DMRS;

In a second aspect, a method of configuring a reference signal is provided, comprising:

The network device generates configuration information of the demodulation reference signal DMRS;

The network device sends the configuration information to the terminal device, so that the terminal device determines a DMRS resource according to the configuration information.

In some possible implementations, the method further includes:

The network device determines the DMRS resource according to the configuration information.

In some possible implementations, the determining, by the network device, the DMRS resource according to the configuration information includes:

The network device determines the DMRS resource according to the following formula:

DMRS(n)=DMRS_start+Random(n);

DMRS(n)=Random(C_DMRS);

DMRS(n)=(DMRS_start+(nmodN)*DMRS _offset )modN_DMRS;

In a third aspect, a terminal device is provided, including:

a transceiver unit, configured to receive configuration information of a demodulation reference signal DMRS;

And a processing unit, configured to determine a DMRS resource based on the configuration information.

In a fourth aspect, a terminal device is provided, including:

a transceiver, configured to receive configuration information of a demodulation reference signal DMRS;

And a processor, configured to determine a DMRS resource based on the configuration information.

In a fifth aspect, a network device is provided, including:

a processing unit, configured to generate configuration information of the demodulation reference signal DMRS;

And a transceiver unit, configured to send the configuration information to the terminal device, so that the terminal device determines the DMRS resource according to the configuration information.

In a sixth aspect, a network device is provided, including:

a processor, configured to generate configuration information of a demodulation reference signal DMRS;

And a transceiver, configured to send the configuration information to the terminal device, so that the terminal device determines the DMRS resource according to the configuration information.

In a seventh aspect, a computer readable medium is provided for storing a computer program comprising instructions for performing the method embodiment of the first aspect or the second aspect described above.

In an eighth aspect, a computer chip is provided, comprising: an input interface, an output interface, at least one processor, a memory, the processor is configured to execute code in the memory, and when the code is executed, the processing The various processes performed by the terminal device in the method of configuring the reference signals in the first aspect and various implementations described above may be implemented.

According to a ninth aspect, a computer chip is provided, comprising: an input interface, an output interface, at least one processor, and a memory, wherein the processor is configured to execute code in the memory, when the code is executed, the processing The various processes performed by the network device in the method of configuring the reference signals in the second aspect and various implementations described above may be implemented.

In a tenth aspect, there is provided a communication system comprising the network device as described above, and the terminal device described above.

DRAWINGS

1 is a schematic diagram of a prior art DMRS resource.

2 is an example of an application scenario of the present invention.

FIG. 3 is a schematic flowchart of a method for configuring a reference signal according to an embodiment of the present invention.

4 is a schematic diagram of a DMRS resource according to an embodiment of the present invention.

FIG. 5 is a schematic block diagram of a terminal device according to an embodiment of the present invention.

FIG. 6 is a schematic block diagram of another terminal device according to an embodiment of the present invention.

FIG. 7 is a schematic block diagram of a network device according to an embodiment of the present invention.

FIG. 8 is a schematic block diagram of another network device according to an embodiment of the present invention.

Detailed ways

FIG. 2 is a schematic diagram of a 5G application scenario according to an embodiment of the present invention.

As shown in FIG. 2, the communication system 100 can include a terminal device 110 and a network device 120. Network device 120 can communicate with terminal device 110 over an air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120.

It should be understood that the embodiment of the present invention is only exemplified by the 5G communication system 100, but the embodiment of the present invention is not limited thereto. That is to say, the technical solution of the embodiment of the present invention can be applied to various scenarios including a 5G communication system. For example, a hybrid deployment scenario composed of a 5G communication system and a first communication system, and the like. The first communication system can be any communication system. For example: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), and the like.

Moreover, the present invention describes various embodiments in connection with network devices and terminal devices.

The network device 120 may refer to any entity on the network side that is used to send or receive signals. For example, a base station device or the like in a 5G network.

The terminal device 110 can be any terminal device. Specifically, the terminal device 110 can communicate with one or more core networks (Core Network) via a radio access network (RAN), and can also be referred to as an access terminal, a user equipment (User Equipment, UE), Subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. For example, it can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and a wireless communication function. Handheld device, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, and the like.

Specifically, as shown in FIG. 3, the method includes:

210. The terminal device receives configuration information of the demodulation reference signal DMRS.

220. The terminal device determines a DMRS resource based on the configuration information.

Specifically, the terminal device determines the DMRS resource based on the configuration information of the DMRS, and generates and sends the DMRS based on the DMRS resource. In the embodiment of the present application, the terminal device receives the DMRS configuration information sent by the network device, and determines the DMRS resource based on the configuration information, so as to improve the randomness of the interference as much as possible, and avoid the same or frequent conflicts of the same user. When the DMRS of the terminal device conflicts with other terminals, the performance of the user identification can be effectively improved, and the system transmission efficiency is improved.

Further, the configuration information is exclusive information of the terminal device.

For example, when the number of terminal devices that need DMRS resources is greater than the DMRS resources available to the terminal device, the network device generates exclusive configuration information for the terminal device. In turn, the DMRS resource conflict is reduced or avoided, and the system transmission efficiency is improved.

It should be understood that the DMRS resource includes, but is not limited to, at least one of the following resources:

Further, in this embodiment of the present application, the configuration information may include information used to indicate whether the DMRS is transmitted in a frequency hopping manner. That is, the terminal device determines the transmission mode of the DMRS according to the information indicating whether the DMRS is transmitted in a frequency hopping manner.

In the following, in the embodiment of the present application, the specific implementation manner of determining the DMRS resource by the terminal device is exemplified:

In one embodiment, the configuration information can include a DMRS resource pattern. Specifically, the configuration information may include a group of DMRS resources, where the group of DMRS resources includes multiple DMRS resources. For example, the network device configures a set of DMRS resources for User 1 and User 2, respectively.

For example, as shown in FIG. 4, it is assumed that user 1 is configured with a set of DMRS resources {1, 2, 3, 4, 2}, and a set of DMRS resources {2, 4, 1, 3, 1} is configured for user 2.

Further, in the embodiment of the present application, each DMRS resource in the group of DMRS resources may be a time index or a transmission number index, and the time index may be understood as an index of a time unit, and the number of transmission times index may be understood as the number of times of data transmission. index. The time unit can be understood as a period of time. However, the length of the time period in this embodiment of the present application is not specifically limited.

For example, in one embodiment, the unit of the time unit includes at least one of: at least one symbol, at least one time slot, and at least one transmission opportunity. Specifically, for example, the unit of the time unit may be one symbol, or a time period composed of a plurality of symbols, or one slot (Slot), or a time period composed of a plurality of slots.

Further, the unit of the time unit is determined by the high-level signaling or physical layer signaling sent by the terminal device by the network device.

For example, the unit of the time unit may be directly indicated by the network device, or may be indirectly indicated by the network device, and the unit of the time unit may be specified by a protocol, which is not specifically limited in this application.

Further, the time unit involved in the embodiment of the present application may be referred to as a relative time unit, and may also be an absolute time unit, which is not specifically limited in this embodiment.

In another embodiment, the terminal device may acquire the DMRS resource based on parameters in the configuration information.

For example, the configuration information can include at least one of the following information:

a first parameter DMRS_start, a second frequency hopping parameter DMRS _offset , a third frequency hopping parameter C_DMRS, a resource number N_DMRS of the DMRS, and an available resource number N of the terminal device, where the DMRS_start represents a starting resource location, the DMRS _offset The terminal device is configured to obtain a next hop resource location, where the C_DMRS is used to obtain the DMRS resource.

The following describes an implementation manner of determining, by the terminal device, the DMRS resource based on parameters in the configuration information in the embodiment of the present application:

In an embodiment, the terminal device determines the DMRS resource based on the configuration information, including:

DMRS(n)=DMRS_start+Random(n) (1)

The DMRS(n) represents the DMRS resource, and the Random(n) represents a random function, and the n is a non-negative integer. For example, the n may be a time index or a transmission number index.

It should be understood that, when the DMRS resource is determined by using the above formula (1), the configuration information may include the first parameter DMRS_start.

In another embodiment, the terminal device determines the DMRS resource according to the following formula:

DMRS(n)=Random(C_DMRS) (2)

It should be understood that, when the DMRS resource is determined by using the above formula (2), the configuration information may include the third frequency hopping parameter C_DMRS.

The DMRS(n) represents the DMRS resource, and the mod represents a modulo operation, and the n is a non-negative integer. For example, the n may be a time index or a transmission number index.

It should be understood that, when the DMRS resource is determined by using the foregoing formula (3), the configuration information may include at least one of a first parameter DMRS_start, a second frequency hopping parameter DMRS _offset, and a resource number N_DMRS of the DMRS.

DMRS(n)=(DMRS_start+(nmodN)*DMRS _offset )modN_DMRS (4)

It should be understood that, when the DMRS resource is determined by using the foregoing formula (4), the configuration information may include a first parameter DMRS_start, a second frequency hopping parameter DMRS _offset , a resource number N_DMRS of the DMRS, and a number of available resources of the terminal device. At least one of them.

It should be understood that the above formula (1), formula (2), formula (3), and formula (4) are only exemplary descriptions of the terminal device determining the DMRS resource based on the parameters in the configuration information in the embodiment of the present application, and the present application The manner in which the terminal device determines the DMRS resource based on the configuration information in the embodiment is not limited to the above formula.

Specifically, as shown in FIG. 5, the terminal device 400 includes:

The transceiver unit 310 is configured to receive configuration information of the demodulation reference signal DMRS.

The processing unit 320 is configured to determine a DMRS resource based on the configuration information.

Optionally, the configuration information includes information indicating whether the DMRS is transmitted in a frequency hopping manner.

Optionally, the DMRS resource includes at least one of the following resources:

Optionally, the configuration information includes at least one of the following information:

a first parameter DMRS_start, a second frequency hopping parameter DMRS _offset , a third frequency hopping parameter C_DMRS, a resource number N_DMRS of the DMRS, an available resource number N of the terminal device, and a DMRS resource pattern, wherein the DMRS_start indicates a starting resource location The DMRS _{offset is} used by the terminal device to obtain a next hop resource location, where the C_DMRS is used to obtain the DMRS resource.

Optionally, the processing unit 320 is specifically configured to:

Determine the DMRS resource according to the following formula:

DMRS(n)=DMRS_start+Random(n);

Wherein, the DMRS(n) represents the DMRS resource, and the Random(n) represents a random function, and the n is a non-negative integer.

Optionally, the processing unit 320 is specifically configured to:

Determine the DMRS resource according to the following formula:

DMRS(n)=Random(C_DMRS);

Optionally, the processing unit 320 is specifically configured to:

Determine the DMRS resource according to the following formula:

The DMRS(n) represents the DMRS resource, and the mod represents a modulo operation, and the n is a non-negative integer.

Optionally, the processing unit 320 is specifically configured to:

Determine the DMRS resource according to the following formula:

DMRS(n)=(DMRS_start+(nmodN)*DMRS _offset )modN_DMRS;

In the embodiment of the present invention, the transceiver unit 310 can be implemented by a transceiver, and the processing unit 320 can be implemented by a processor. As shown in FIG. 6, the terminal device 400 may include a processor 410, a transceiver 420, and a memory 430. The memory 430 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 410. The various components in the terminal device 400 are connected by a bus system, wherein the bus system includes a power bus, a control bus, and a status signal bus in addition to the data bus.

The terminal device 400 shown in FIG. 6 can implement the various processes implemented by the terminal device in the foregoing method embodiment of FIG. 3. To avoid repetition, details are not described herein again. That is, the method embodiment in the embodiment of the present invention may be implemented by a processor and a transceiver.

FIG. 7 is a schematic block diagram of a network device according to an embodiment of the present application.

Specifically, as shown in FIG. 7, the network device includes:

The processing unit 510 is configured to generate configuration information of the demodulation reference signal DMRS;

The transceiver unit 520 is configured to send the configuration information to the terminal device, so that the terminal device determines the DMRS resource according to the configuration information.

Optionally, the DMRS resource includes at least one of the following resources:

Optionally, the network device further includes:

The DMRS resource is determined according to the configuration information.

Optionally, the processing unit 510 is specifically configured to:

Determine the DMRS resource according to the following formula:

DMRS(n)=DMRS_start+Random(n);

Optionally, the processing unit 510 is specifically configured to:

Determine the DMRS resource according to the following formula:

DMRS(n)=Random(C_DMRS);

Optionally, the processing unit 510 is specifically configured to:

Determine the DMRS resource based on the following formula:

Optionally, the processing unit 510 is specifically configured to:

Determine the DMRS resource according to the following formula:

DMRS(n)=(DMRS_start+(nmodN)*DMRS _offset )modN_DMRS;

In the embodiment of the present invention, the processing unit 510 may be implemented by a processor, and the transceiver unit 520 may be implemented by a transceiver. Network device 600 can include a processor 610, a transceiver 620, and a memory 630. The network device 600 shown in FIG. 8 can implement the various processes implemented by the network device in the foregoing method embodiment shown in FIG. 3. To avoid repetition, details are not described herein again.

That is, the method embodiment in the embodiment of the present invention may be implemented by a processor and a transceiver.

In the implementation process, each step of the method embodiment in the embodiment of the present invention may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. More specifically, the steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software modules can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.

It should be understood that the processor mentioned in the embodiment of the present invention may be an integrated circuit chip, which has signal processing capability, and may implement or execute the disclosed methods, steps, and logic blocks in the embodiments of the present invention. For example, the above processor may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or Other programmable logic devices, transistor logic devices, discrete hardware components, and the like. Further, the general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

Furthermore, the memory referred to in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory. The volatile memory can be a random access memory (RAM) that acts as an external cache. The memory in the embodiment of the present invention may also be a static random access memory (SRAM), a dynamic random access memory (DRAM), or a dynamic random access memory (DRAM). Synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR), enhanced synchronous dynamic random access memory (ESDRAM), synchronous connection Synchro link DRAM (SLDRAM) and direct memory bus (DR RAM) and so on. That is, the memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.

In the end, it is to be understood that the terminology of the embodiments of the invention and the claims

For example, the singular forms "a", "the", "the" and "the" meaning.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the embodiments of the invention.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined. Or it can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.

In addition, each functional unit in the embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

If implemented in the form of a software functional unit and sold or used as a standalone product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solution of the embodiments of the present invention, or the part contributing to the prior art or the part of the technical solution, may be embodied in the form of a software product stored in a storage medium. The instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory, a random access memory, a magnetic disk, or an optical disk.

The above is only a specific embodiment of the embodiments of the present invention, but the scope of protection of the embodiments of the present invention is not limited thereto, and any person skilled in the art can easily think of the technical scope disclosed in the embodiments of the present invention. Variations or substitutions are intended to be included within the scope of the embodiments of the invention. Therefore, the scope of protection of the embodiments of the present invention should be determined by the scope of protection of the claims.

Claims

A method for configuring a reference signal, comprising:

The terminal device receives configuration information of the demodulation reference signal DMRS;

The terminal device determines a DMRS resource based on the configuration information.
The method according to claim 1, wherein the configuration information comprises information indicating whether the DMRS is transmitted in a frequency hopping manner.
The method according to claim 1 or 2, wherein the DMRS resource comprises at least one of the following resources:

DMRS based sequence resources, DMRS port resources, DMRS cyclic shift resources, and DMRS time-frequency resources.
The method according to any one of claims 1 to 3, wherein the configuration information comprises at least one of the following information:

a first parameter DMRS_start, a second frequency hopping parameter DMRS offset , a third frequency hopping parameter C_DMRS, a resource number N_DMRS of the DMRS, an available resource number N of the terminal device, and a DMRS resource pattern, wherein the DMRS_start represents And the DMRS offset is used by the terminal device to obtain a next hop resource location, where the C_DMRS is used to obtain the DMRS resource.
The method according to claim 4, wherein the determining, by the terminal device, the DMRS resource based on the configuration information comprises:

The terminal device determines the DMRS resource according to the following formula:

DMRS(n)=DMRS_start+Random(n);

The DMRS(n) represents the DMRS resource, the Random(n) represents a random function, and the n is a non-negative integer.
The method according to claim 4, wherein the determining, by the terminal device, the DMRS resource based on the configuration information comprises:

The terminal device determines the DMRS resource according to the following formula:

DMRS(n)=Random(C_DMRS);

The DMRS(n) represents the DMRS resource, the Random(n) represents a random function, and the n is a non-negative integer.
The method according to claim 4, wherein the determining, by the terminal device, the DMRS resource based on the configuration information comprises:

The terminal device determines the DMRS resource according to the following formula:

The DMRS(n) represents the DMRS resource, the mod represents a modulo operation, and the n is a non-negative integer.
The method according to claim 4, wherein the determining, by the terminal device, the DMRS resource based on the configuration information comprises:

The terminal device determines the DMRS resource according to the following formula:

DMRS(n)=(DMRS_start+(n mod N)*DMRS offset )mod N_DMRS;

The DMRS(n) represents the DMRS resource, the mod represents a modulo operation, and the n is a non-negative integer.
A method for configuring a reference signal, comprising:

The network device generates configuration information of the demodulation reference signal DMRS;

The network device sends the configuration information to the terminal device, so that the terminal device determines a DMRS resource according to the configuration information.
The method according to claim 9, wherein the configuration information comprises information indicating whether the DMRS is transmitted in a frequency hopping manner.
The method according to claim 9 or 10, wherein the DMRS resource comprises at least one of the following resources:

DMRS based sequence resources, DMRS port resources, DMRS cyclic shift resources, and DMRS time-frequency resources.
The method according to any one of claims 9 to 11, wherein the configuration information comprises at least one of the following information:

a first parameter DMRS_start, a second frequency hopping parameter DMRS offset , a third frequency hopping parameter C_DMRS, a resource number N_DMRS of the DMRS, an available resource number N of the terminal device, and a DMRS resource pattern, wherein the DMRS_start represents And the DMRS offset is used by the terminal device to obtain a next hop resource location, where the C_DMRS is used to obtain the DMRS resource.
The method according to any one of claims 9 to 12, wherein the method further comprises:

The network device determines the DMRS resource according to the configuration information.
The method according to claim 13, wherein the determining, by the network device, the DMRS resource according to the configuration information comprises:

The network device determines the DMRS resource according to the following formula:

DMRS(n)=DMRS_start+Random(n);

The DMRS(n) represents the DMRS resource, the Random(n) represents a random function, and the n is a non-negative integer.
The method according to claim 13, wherein the determining, by the network device, the DMRS resource according to the configuration information comprises:

The network device determines the DMRS resource according to the following formula:

DMRS(n)=Random(C_DMRS);

The DMRS(n) represents the DMRS resource, the Random(n) represents a random function, and the n is a non-negative integer.
The method according to claim 13, wherein the determining, by the network device, the DMRS resource according to the configuration information comprises:

The network device determines the DMRS resource according to the following formula:

The DMRS(n) represents the DMRS resource, the mod represents a modulo operation, and the n is a non-negative integer.
The method according to claim 13, wherein the determining, by the network device, the DMRS resource according to the configuration information comprises:

The network device determines the DMRS resource according to the following formula:

DMRS(n)=(DMRS_start+(n mod N)*DMRS offset )mod N_DMRS;

The DMRS(n) represents the DMRS resource, the mod represents a modulo operation, and the n is a non-negative integer.
A terminal device, comprising:

a transceiver unit, configured to receive configuration information of a demodulation reference signal DMRS;

And a processing unit, configured to determine a DMRS resource based on the configuration information.
The terminal device according to claim 18, wherein the configuration information comprises information indicating whether the DMRS is transmitted in a frequency hopping manner.
The terminal device according to claim 18 or 19, wherein the DMRS resource comprises at least one of the following resources:

DMRS based sequence resources, DMRS port resources, DMRS cyclic shift resources, and DMRS time-frequency resources.
The terminal device according to any one of claims 18 to 20, wherein the configuration information comprises at least one of the following information:

a first parameter DMRS_start, a second frequency hopping parameter DMRS offset , a third frequency hopping parameter C_DMRS, a resource number N_DMRS of the DMRS, an available resource number N of the terminal device, and a DMRS resource pattern, wherein the DMRS_start represents And the DMRS offset is used by the terminal device to obtain a next hop resource location, where the C_DMRS is used to obtain the DMRS resource.
The terminal device according to claim 21, wherein the processing unit is specifically configured to:

The DMRS resource is determined according to the following formula:

DMRS(n)=DMRS_start+Random(n);

The DMRS(n) represents the DMRS resource, the Random(n) represents a random function, and the n is a non-negative integer.
The terminal device according to claim 21, wherein the processing unit is specifically configured to:

The DMRS resource is determined according to the following formula:

DMRS(n)=Random(C_DMRS);

The DMRS(n) represents the DMRS resource, the Random(n) represents a random function, and the n is a non-negative integer.
The terminal device according to claim 21, wherein the processing unit is specifically configured to:

The DMRS resource is determined according to the following formula:

The DMRS(n) represents the DMRS resource, the mod represents a modulo operation, and the n is a non-negative integer.
The terminal device according to claim 21, wherein the processing unit is specifically configured to:

The DMRS resource is determined according to the following formula:

DMRS(n)=(DMRS_start+(n mod N)*DMRS offset )mod N_DMRS;

The DMRS(n) represents the DMRS resource, the mod represents a modulo operation, and the n is a non-negative integer.
A network device, comprising:

a processing unit, configured to generate configuration information of the demodulation reference signal DMRS;

And a transceiver unit, configured to send the configuration information to the terminal device, so that the terminal device determines the DMRS resource according to the configuration information.
The network device according to claim 26, wherein the configuration information comprises information indicating whether the DMRS is transmitted in a frequency hopping manner.
The network device according to claim 26 or 27, wherein the DMRS resource comprises at least one of the following resources:

DMRS based sequence resources, DMRS port resources, DMRS cyclic shift resources, and DMRS time-frequency resources.
The network device according to any one of claims 26 to 28, wherein the configuration information comprises at least one of the following information:

a first parameter DMRS_start, a second frequency hopping parameter DMRS offset , a third frequency hopping parameter C_DMRS, a resource number N_DMRS of the DMRS, an available resource number N of the terminal device, and a DMRS resource pattern, wherein the DMRS_start represents And the DMRS offset is used by the terminal device to obtain a next hop resource location, where the C_DMRS is used to obtain the DMRS resource.
The network device according to any one of claims 26 to 29, wherein the network device further comprises:

Determining the DMRS resource according to the configuration information.
The network device according to claim 30, wherein the processing unit is specifically configured to:

The DMRS resource is determined according to the following formula:

DMRS(n)=DMRS_start+Random(n);

The DMRS(n) represents the DMRS resource, the Random(n) represents a random function, and the n is a non-negative integer.
The network device according to claim 30, wherein the processing unit is specifically configured to:

The DMRS resource is determined according to the following formula:

DMRS(n)=Random(C_DMRS);

The DMRS(n) represents the DMRS resource, the Random(n) represents a random function, and the n is a non-negative integer.
The network device according to claim 30, wherein the processing unit is specifically configured to:

The DMRS resource is determined according to the following formula:

The DMRS(n) represents the DMRS resource, the mod represents a modulo operation, and the n is a non-negative integer.
The network device according to claim 30, wherein the processing unit is specifically configured to:

The DMRS resource is determined according to the following formula:

DMRS(n)=(DMRS_start+(n mod N)*DMRS offset )mod N_DMRS;

The DMRS(n) represents the DMRS resource, the mod represents a modulo operation, and the n is a non-negative integer.