WO2025138181A1 - Power indication method, terminal device, and network device - Google Patents

Abstract

The present application relates to a power indication method, a terminal device, and a network device. The power indication method comprises: a first terminal device receives first indication information, wherein the first indication information indicates a first DMRS and/or power information of the first DMRS; and the first terminal device sends and/or receives data on the basis of the first indication information. According to the present application, the DMRS transmit power can be flexibly adjusted on the basis of different situations, thereby better matching the current transmission environment and requirements, and improving performance.

Description

Power indication method, terminal device and network device Technical Field

The present application relates to the field of communications, and more specifically, to a power indication method, a terminal device, and a network device.

Background Art

In order to increase the resources used for data transmission and improve the data transmission rate in the communication system, a transmission method is proposed in which the demodulation reference signal (DMRS) and the data signal can be transmitted on the same resource element (RE). In this way, how to give a dynamic power indication scheme for the reference signal is a technical problem that needs to be solved.

Summary of the invention

The embodiments of the present application provide a power indication method, a terminal device, and a network device, which can flexibly adjust the DMRS transmission power according to different situations, so as to better match the current transmission environment and requirements and improve performance.

The present application provides a power indication method, including:

The first terminal device receives first indication information, where the first indication information indicates the first DMRS and/or power information of the first DMRS;

The first terminal device sends and/or receives data according to the first indication information.

The present application provides a power indication method, including:

The first network device or the second terminal device sends first indication information, where the first indication information indicates the first DMRS and/or power information of the first DMRS.

The present application provides a first terminal device, including:

The first transceiver module is used to receive first indication information, where the first indication information indicates a first DMRS and/or power information of the first DMRS; and send and/or receive data according to the first indication information.

An embodiment of the present application provides a first network device, including:

The second transceiver module is used to send first indication information, where the first indication information indicates the first DMRS and/or power information of the first DMRS.

The embodiment of the present application provides a second terminal device, including:

The third transceiver module is used to send first indication information, where the first indication information indicates the first DMRS and/or power information of the first DMRS.

The embodiment of the present application provides a communication device, including a processor, a memory and a transceiver. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory and control the transceiver so that the device executes the above-mentioned power indication method.

An embodiment of the present application provides a chip for implementing the above-mentioned power indication method.

Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned power indication method.

An embodiment of the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed by a device, the device executes the above-mentioned power indication method.

An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the above-mentioned power indication method.

An embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the above-mentioned power indication method.

The embodiment of the present application uses the first indication information to indicate the power information of the first DMRS, so that the DMRS transmission power can be flexibly adjusted according to different situations, so as to better match the current transmission environment and requirements and improve performance.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 exemplarily shows a communication system 100 .

FIG. 2 is a schematic flow chart of a power indication method 200 according to an embodiment of the present application.

FIG3 is a schematic flowchart of a power indication method 300 according to an embodiment of the present application.

FIG. 4 is a schematic block diagram of a first terminal device 400 according to an embodiment of the present application.

FIG5 is a schematic block diagram of a first network device 500 according to an embodiment of the present application.

FIG6 is a schematic block diagram of a second terminal device 600 according to an embodiment of the present application.

FIG. 7 is a schematic structural diagram of a communication device 700 according to an embodiment of the present application.

FIG. 8 is a schematic structural diagram of a chip 800 according to an embodiment of the present application.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (D2D) communication, machine to machine (M2M) communication, machine type communication (MTC) communication, vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

In one implementation, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

In one embodiment, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.

The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in the next generation communication system such as the NR network, or a terminal device in the future evolved Public Land Mobile Network (PLMN) network, etc.

In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

In the embodiments of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

In an embodiment of the present application, the network device may be a device for communicating with a mobile device, the network device may be an access point (AP) in a WLAN, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

As an example but not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

In an embodiment of the present application, a network device can provide services for a cell, and a terminal device communicates with the network device through transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell can be a cell corresponding to a network device (e.g., a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

Fig. 1 exemplarily shows a communication system 100. The communication system includes a network device 110 and two terminal devices 120. In one embodiment, the communication system 100 may include multiple network devices 110, and each network device 110 may include other number of terminal devices 120 within its coverage area, which is not limited in the embodiment of the present application.

In one implementation, the communication system 100 may also include other network entities such as a Mobility Management Entity (MME) and an Access and Mobility Management Function (AMF), but this is not limited to the embodiments of the present application.

Among them, the network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks for communicating with the access network equipment. The access network equipment may be an evolutionary base station (evolutional node B, referred to as eNB or e-NodeB) macro base station, micro base station (also called "small base station"), pico base station, access point (AP), transmission point (TP) or new generation Node B (gNodeB) in a long-term evolution (LTE) system, a next-generation (mobile communication system) (next radio, NR) system or an authorized auxiliary access long-term evolution (LAA-LTE) system.

It should be understood that the device with communication function in the network/system in the embodiment of the present application can be called a communication device. Taking the communication system shown in Figure 1 as an example, the communication device may include a network device and a terminal device with communication function, and the network device and the terminal device may be specific devices in the embodiment of the present application, which will not be repeated here; the communication device may also include other devices in the communication system, such as other network entities such as a network controller and a mobile management entity, which is not limited in the embodiment of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and/or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this article generally indicates that the associated objects before and after are in an "or" relationship.

It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all belong to the protection scope of the embodiments of the present application.

In wireless communication systems (such as WIFI, 4th-Generation (4G) LTE), 5G (NR), and future 6th-Generation (6G), etc.), the basic workflow may include the following steps:

At the transmitting end, the bit stream information to be transmitted undergoes channel coding (and possibly corresponding rate matching) to obtain coded bits, which are then modulated to obtain modulation symbols (for example, the modulation may adopt one or more of Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), 16-bit Quadrature Amplitude Modulation (QAM), 64QAM, 256QAM, 512QAM, 1024QAM, 2048QAM, 4096QAM). Next, the modulation symbols and demodulation reference signals (DMRS) are inserted into the corresponding time-frequency resources (for example, into the corresponding resource elements (RE)), and then processed to obtain orthogonal frequency division multiplexing (OFDM) symbols, or single carrier frequency division multiple access (SC-FDMA) symbols, or other forms of multi-carrier symbols.

At the receiving end, the receiver measures the DMRS channel estimation, demodulates the modulation symbols, and then performs channel decoding to obtain the transmitted bits. The above steps can be combined for iteration (for example, the information obtained by the decoding module can be used in the module including the channel estimation and/or in the module including the modulation symbol demodulation), and it is not necessarily in the strict order above.

The above process is similar for downlink transmission (DL transmission), that is, transmission from the network to the terminal, uplink transmission (UL transmission), that is, transmission from the terminal to the network, and sidelink transmission (SL transmission), that is, transmission between terminals. In order to obtain the bit information transmitted by the transmitter, the receiver needs to use the demodulation reference signal. The transmission here can be both data transmission and control information transmission. For example, it can be a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), a physical sidelink shared channel (PSSCH), a physical downlink control channel (PDCCH), a physical uplink control channel (PUCCH), a physical sidelink control channel (PSCCH), a physical sidelink feedback channel (PSCCH). Feedback Channel, PSFCH), Physical Sidelink Broadcast Channel (PSBCH), etc. In the subsequent text of this application, for simplicity of description, data is usually used for description, and the data not only includes general data to be transmitted (such as data transmitted in PDSCH), but also control information.

Due to the complexity and time-varying nature of the wireless channel environment, in the above system, the estimation and recovery of the wireless channel by the receiver directly affects the final data recovery performance. In traditional communication systems, generally speaking, the DMRS of the control channel (i.e., the channel for transmitting control information) is relatively fixed, that is, its density and/or pattern does not need to change dynamically. At this time, the design of DMRS will be more conservative, that is, it can adapt to various environments of the wireless channel. For the data channel (i.e., the channel for transmitting data), in order to reduce the DMRS overhead, different DMRS densities and/or patterns are often designed. The system configures or instructs the receiving end which DMRS to use according to the current wireless channel environment.

In existing communication systems, DMRS and data occupy different REs respectively (i.e., there is no overlap in RE time-frequency resources). That is to say, at one RE position, DMRS can be mapped, or data can be mapped, but DMRS and data cannot be mapped at the same time. Therefore, data and DMRS are orthogonal in time-frequency resources (i.e., there is no overlap). When the terminal (UE) moves at a high speed, in order to improve the channel estimation performance, DMRS is often required to occupy more symbols in the time domain, that is, DMRS needs to occupy more RE resources, and accordingly, the RE resources available for data will be reduced. It can be seen that when the total time-frequency transmission resources are certain, the increase in resource overhead required for the pilot (such as DMRS) means that the resources used to transmit data are reduced, thereby reducing the data transmission rate.

One way to solve the above shortcomings is to enable the DMRS signal and the data signal to be transmitted on the same RE, that is, one or more or all REs used by the DMRS are the same as the REs used by the data. In this case, an advanced receiver (such as an iterative receiver, an artificial intelligence/machine learning (AI/ML) receiver) can be used to process and demodulate the data. Among them, the AI/ML receiver can adopt various methods, such as a deep learning algorithm, and can be implemented by one or a combination of a fully connected network (FCN, Fully Convolutional Networks), a convolutional neural network (CNN, Convolutional Neural Network), a recurrent neural network (RNN Recurrent Neural Networks,), and a transformer neural network architecture. The above receiver is only an example, and the actual receiver may not be limited to the above example.

It should be noted that in a code division multiple access (CDMA) system, although the pilot signal (including DMRS) and the data signal (including the data signal related to the control information) can be transmitted on the same time-frequency resource, both the pilot signal and the data signal need to undergo additional spread spectrum processing, for example, the pilot signal and the data signal need to use different orthogonal codes to distinguish them; in other words, in CDMA in the related art, the pilot signal and the data signal transmitted on the same time-frequency resource are the pilot signal and the data signal after spread spectrum processing. The embodiments of the present application are mainly applied to OFDM systems/SC-FDMA systems, as well as other systems based on multiple sub-carriers, and the modulation symbols of the data signal (such as QPSK, and 16QAM) and the modulation symbols of the demodulated pilot signal can be directly transmitted on the same time-frequency resource, and the pilot signal and the data signal do not need to undergo additional spread spectrum processing; that is, in the schemes provided in the subsequent embodiments of the present application, the pilot signal and the data signal transmitted on the same time-frequency resource can be the pilot signal and the data signal that have not undergone spread spectrum processing.

The premise of using the above-mentioned advanced receiver is that the receiving end must know the corresponding reference signal configuration, otherwise it will cause the receiver to be incompatible with the actual received signal, resulting in performance degradation. For the above-mentioned non-orthogonal DMRS, there is currently a lack of specific design methods. This application provides a dynamic power indication scheme for this reference signal, as well as different DMRS indication schemes.

The relevant concepts involved in the embodiments of this application are explained as follows:

Resource Element (RE): A resource element is the smallest time-frequency resource unit of the system. For example, in NR or LTE systems, one RE corresponds to one subcarrier in the frequency domain and one symbol in the time domain.

Resource Block (RB): A resource block may be for K consecutive subcarriers in the frequency domain. In addition, in some systems, an RB may be for K consecutive subcarriers in the frequency domain and M consecutive symbols in the time domain. For example, the typical value of K is 12, and it may also be other values, such as 2 to the power of n, that is, K may be 8 or 16 or other values. The typical value of M may be one or more of 6, 7, 13, or 14. In the following description, RB and Physical Resource Block (PRB) are not distinguished, and the two may be collectively referred to as PRB.

Symbol: can correspond to one or more of the following:

OFDM symbol;

SC-FDMA symbol (also called DFT-s-OFDM symbol, or multi-carrier symbol using transform precoder, or OFDM symbol using transform precoder);

Other forms of multi-carrier symbols.

Fig. 2 is a schematic flow chart of a power indication method 200 according to an embodiment of the present application. The method can optionally be applied to the system shown in Fig. 1, but is not limited thereto. The method includes at least part of the following contents.

S210. The first terminal device receives first indication information, where the first indication information indicates a first DMRS and/or power information of the first DMRS;

S220. The first terminal device sends and/or receives data according to the first indication information.

The first indication information may be sent by the first network device or the second terminal device.

In one embodiment, one or more REs used by the first DMRS are the same as REs used by data. That is, one or more or all REs of the first DMRS are also REs used by data, where the data may be general data and/or control information. In the following content, in order to simplify the description, these REs are referred to as shared REs.

DMRS and data use shared REs, so that data can use more REs, increase transmission rate, or improve transmission reliability. The embodiment of the present application uses the first indication information to indicate the power information of the first DMRS, and can flexibly adjust the DMRS transmission power according to different situations, so as to better match the current transmission environment and requirements and improve performance.

In one example, the terminal device sends and/or receives data according to the first indication information, including:

The first terminal device determines the power of the first DMRS according to the power information of the first DMRS;

The first terminal device sends and/or receives data according to the power of the first DMRS.

Among them, the power information of the first DMRS may include the power offset value of the first DMRS, or the power parameter of the first DMRS, and other parameters. The power offset value of the first DMRS, or the power parameter of the first DMRS, and other parameters can be used to determine the power of the first DMRS. The aforementioned determination of power can be equivalently understood as calculating power, for example, "used to determine the power of the first DMRS" is equivalent to "used to calculate the power of the first DMRS"; "used to determine the power of the second DMRS" is equivalent to "used to calculate the power of the first DMRS"; and so on.

In some examples, the first indication information is transmitted via downlink control information (DCI) signaling and/or medium access control element (MAC CE) signaling. By using DCI and/or MAC CE to transmit the first indication information, the DMRS transmit power can be adjusted more dynamically according to different situations, so as to better match the current transmission environment and requirements and improve performance.

In some implementations, the first indication information may include a first field, and the first field may indicate the first DMRS and/or the power information of the first DMRS.

When the value of the first field is the first value, the first field may indicate the first DMRS and/or the power information of the first DMRS.

When the value of the first field is the second value, the first field may indicate the second DMRS and/or the power information of the second DMRS.

The RE used by the second DMRS cannot be used for data transmission, that is, the RE used by the second DMRS is different from the RE used for data. The second DMRS can also be called an orthogonal DMRS because the time-frequency resources of the second DMRS do not overlap with the time-frequency resources for data transmission and are orthogonal.

In one example, the value of the first field is only the first value, and the first field indicates the power information of the first DMRS.

In this way, one field may be used to indicate both the DMRS and the power parameter, and signaling overhead may be reduced through joint coding.

In the embodiment of the present application, there may be one or more first values and one or more second values, that is, there may be one or more first values and one or more second values; the value of the first domain may be one or a group of first values, or one or a group of second values.

In an embodiment of the present application, if the first indication information schedules data transmission (for example, PUSCH data transmission, or PDSCH data transmission, or other data transmission), when the value of the first domain is a first value, the data transmission uses a first DMRS; when the value of the first domain is a second value, the data transmission uses a second DMRS.

In some embodiments, the first indication information may further include a second domain, the second domain indicating that the data transmission uses the first DMRS and/or the second DMRS. In this case, if the first indication information schedules data transmission (e.g., PUSCH data transmission, or PDSCH data transmission, or other data transmission), when the second domain indicates that the data transmission uses the first DMRS, according to the indication of the second domain, the data transmission uses the first DMRS; when the second domain indicates that the data transmission uses the second DMRS, according to the indication of the second domain, the data transmission uses the second DMRS; when the second domain indicates that the data transmission uses the first DMRS and the second DMRS, according to the indication of the second domain, the data transmission uses the first DMRS and the second DMRS.

For example, when the second domain takes the third value, the second domain indicates that the data transmission uses the first DMRS; when the second domain takes the fourth value, the second domain indicates that the data transmission uses the second DMRS; when the second domain takes the fifth value, the second domain indicates that the data transmission uses the first DMRS and the second DMRS. The second domain indicates that the first DMRS and the second DMRS are used simultaneously, which can further improve the channel estimation performance.

The REs used by the second DMRS cannot be used for data transmission, that is, data and the second DMRS use different REs.

Further, in some examples, when the second domain indicates that the data transmission adopts the first DMRS, the first domain indicates the power information of the first DMRS; in some examples, when the second domain indicates that the data transmission adopts the second DMRS, the first domain indicates the power information of the second DMRS; in this way, the scheme proposed in the embodiment of the present application can indicate the power information of the first DMRS and the power information of the second DMRS, which can better match the current transmission environment and improve system performance;

Alternatively, when the second field indicates that the second DMRS is used for data transmission, the first field is ignored, or the first field indicates a predetermined value; in this way, the solution proposed in the present application only indicates the power information of the first DMRS, which can reduce the complexity of product implementation.

In some examples, when the second domain indicates that data transmission uses the first DMRS and the second DMRS, the first domain indicates the power information of the first DMRS; in this way, the solution proposed in the present application only indicates the power information of the first DMRS, which can reduce the complexity of product implementation.

In some examples, when the second domain indicates that data transmission uses the first DMRS and the second DMRS, the first domain indicates the power information of the first DMRS and the power information of the second DMRS; in this way, the scheme proposed in the present application simultaneously indicates the power information of the first DMRS and the power information of the second DMRS, which can further perform power optimization according to the network environment to improve performance.

In the above example, two fields are used to dynamically indicate DMRS and power parameters, respectively, wherein the second field may indicate that the data transmission adopts the first DMRS, or adopts the second DMRS, or adopts the first DMRS and the second DMRS; the first field may indicate the power information of the first DMRS and/or the power information of the second DMRS on the premise that the second field indicates different situations. Using two fields to dynamically indicate DMRS and power parameters respectively can improve flexibility and reduce the design complexity of the first indication information.

In some embodiments, the power information indicated by the first indication information (the power information of the first DMRS and/or the power information of the second DMRS) may be one or a group of power offset values (offset), for example, the power information of the first DMRS includes: one or a group of power offset values of the first DMRS; the power information of the second DMRS includes: one or a group of power offset values of the second DMRS. By indicating the power information by the power offset value, power adjustment with a smaller granularity can be achieved. Each first value of the above-mentioned first domain may correspond to a power offset value or a group of power offset values, and each second value of the above-mentioned first domain may correspond to a power offset value or a group of power offset values, and there may be multiple options.

In some examples, the first network device can be configured with multiple power offset values or multiple groups of power offset values (for example, configured through first configuration information); each first value of the first domain corresponds to a power offset value or a group of power offset values according to a predetermined rule (for example, protocol provisions, network configuration, etc.), or each second value of the first domain corresponds to a power offset value or a group of power offset values according to a predetermined rule (for example, protocol provisions, network configuration, etc.). Configuring power offset values by network devices can improve the flexibility of the system.

When configuring multiple or multiple groups of power offset values, the first DMRS and the second DMRS may be independently configured, for example, multiple or multiple groups of power offset values may be configured for the first DMRS, and another multiple or multiple groups of power offset values may be configured for the second DMRS. Accordingly, when the first DMRS is used for data transmission, the power of the first DMRS is determined using the multiple or multiple groups of power offset values configured for the first DMRS; when the second DMRS is used for data transmission, the power of the second DMRS is determined using the multiple or multiple groups of power offset values configured for the second DMRS.

For example, the first terminal device receives first configuration information, and the first configuration information configures multiple or multiple groups of power offset values.

In other examples, multiple power offset values or multiple groups of power offset values may be specified by the protocol, and the protocol specifies one power offset value or one group of power offset values corresponding to each first value of the first domain, or the protocol specifies one power offset value or one group of power offset values corresponding to each second value of the first domain. Specifying the power offset value by the protocol can simplify the complexity of product implementation.

When multiple or multiple groups of power offset values are specified by the protocol, they can be specified for the first DMRS and the second DMRS respectively, for example, for the first DMRS, the protocol specifies multiple or multiple groups of power offset values; for the second DMRS, the protocol specifies another multiple or multiple groups of power offset values. Accordingly, in the case where the first DMRS is used for data transmission, the power of the first DMRS is determined using the multiple or multiple groups of power offset values specified for the first DMRS; in the case where the second DMRS is used for data transmission, the power of the second DMRS is determined using the multiple or multiple groups of power offset values specified for the second DMRS.

In some embodiments, the first terminal device can determine the power of the first DMRS based on the first power and one or a group of power offset values of the first DMRS; or, the first terminal device can determine the power of the second DMRS based on the first power and one or a group of power offset values of the second DMRS.

In one example, the first terminal device receives second indication information, and the first power is determined according to the second indication information. The second indication information may be sent to the first terminal device by the first network device or the second terminal device. The second indication information may be transmitted via Radio Resource Control (RRC) signaling and/or MAC CE signaling.

The first terminal device determines the first power according to the second indication information, and increases or decreases the power according to the power offset value of the first DMRS on the basis of the first power, thereby obtaining the power of the first DMRS; or increases or decreases the power according to the power offset value of the second DMRS on the basis of the first power, thereby obtaining the power of the second DMRS.

In this way, a basic power, ie, the first power, is configured through the network, and then the power of the DMRS is obtained by increasing or decreasing it (the increase or decrease value is the power offset value), thereby reducing the overhead of dynamic indication signaling.

In some examples, the second indication information can be respectively given to the first DMRS and the second DMRS, so that the first terminal device can calculate the first power corresponding to the first DMRS and another first power corresponding to the second DMRS according to the second indication information. Similar extensions can be made in other places later, and will not be repeated one by one.

Alternatively, in another example, the first power may include the power corresponding to the first DMRS during the previous data transmission. The device can determine the power of the first DMRS during the current data transmission based on the power corresponding to the first DMRS during the previous data transmission and the power offset value of the first DMRS. The first terminal device can determine the power of the second DMRS during the current data transmission based on the power corresponding to the second DMRS during the previous data transmission and the power offset value of the second DMRS.

In the above example, the power offset value can have multiple values, including positive, negative or 0; wherein the power offset value is 0, indicating no offset, that is, the power of the first DMRS or the second DMRS is equal to the first power.

In some embodiments, the power information indicated by the first indication information (power information of the first DMRS and/or power information of the second DMRS) may be one or a group of power parameters. For example, the power information of the first DMRS includes: one or a group of power parameters of the first DMRS; the power information of the second DMRS includes: one or a group of power parameters of the second DMRS.

The first terminal device may determine the power of the first DMRS based on one or a set of power parameters of the first DMRS. The first terminal device may also determine the power of the second DMRS based on one or a set of power parameters of the second DMRS. For example, the power parameter may include parameters involved in calculating the power, and the first terminal device may calculate one or a set of powers of the first DMRS using one or a set of power parameters of the first DMRS indicated by the first indication information. Alternatively, the first terminal device may calculate one or a set of powers of the second DMRS using one or a set of power parameters of the second DMRS indicated by the first indication information.

In some examples, the first network device may configure multiple power parameters or multiple groups of power parameters (for example, configured via third indication information); the first terminal device receives third indication information, which configures multiple or multiple groups of power parameters. In one example, the third indication information is transmitted via RRC signaling.

Each first value or second value of the first domain corresponds to a power parameter or a group of power parameters according to a predetermined rule (such as protocol provisions, network configuration, etc.). By configuring multiple or multiple groups of power parameters through the network and then dynamically indicating through the first indication information, the flexibility of the system can be improved.

In some implementations, before the first terminal device receives the first indication information, the following steps may also be included:

The first terminal device sends a first terminal capability, where the first terminal capability indicates that the first terminal device supports a first DMRS. The first terminal capability may be transmitted via RRC signaling and/or MAC CE.

In one example, the first terminal device may send the first terminal capability to the first network device or the second terminal device.

In one example, the first terminal capability is reported for a frequency band (i.e., different frequency bands can independently report corresponding capabilities, per band). Independent reporting of different frequency bands can give the terminal greater freedom, for example, the terminal can support this function on one or some frequency bands, but not on other frequency bands, so that more terminals can support this new function.

In one example, the first terminal capability is reported independently according to the band combination (i.e., different band combinations can independently report corresponding capabilities, per band combination). Independent reporting of different band combinations can enable the terminal to have greater freedom. For example, the terminal may not support this function under a certain band combination, but support this function under another band combination, so that more terminals can support this new function.

In one example, the first terminal capability is reported independently for each frequency band in a band combination (i.e., frequency bands in different frequency band combinations can be reported independently, per band per band combination). Independent reporting of each frequency band in different frequency band combinations can enable the terminal to have greater freedom. For example, the terminal may not support this function under a certain frequency band combination, but support this function in some frequency bands under another frequency band combination, so that more terminals can support this new function.

In one example, the first terminal capability is reported independently for each carrier on each frequency band in a band combination (i.e., different carriers CC in frequency bands in different frequency band combinations can be reported independently, per CC per band per band combination, or FSPC). Different frequency band combinations are reported independently, and different carriers on a frequency band can also be reported independently, which can give the terminal greater freedom, so that more terminals can support this new function.

In one example, the first terminal capability is reported according to the frequency range (FR) (that is, different FRs can be reported independently, per FR, that is, FR1 and FR2 are reported independently). Independent reporting of different FRs can give the terminal greater freedom. For example, the terminal device does not support this function at a low frequency (such as FR1), but supports this function at a high frequency (such as FR2), so that more terminals can support this new function.

In one example, the first terminal capability is reported per UE (i.e., per UE, that is, if the UE reports this capability, then this capability can be supported on all frequency bands). This approach can reduce the signaling overhead of reporting terminal capabilities.

In some implementations, before the first terminal device receives the first indication information, the following steps may also be included:

The first terminal device sends the second terminal capability, and the second terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS through the first indication information. For example, the second terminal capability indicates that the first terminal device supports DCI and/or MAC CE dynamic indication of power information.

Among them, the second terminal capabilities can be transmitted via RRC signaling and/or MAC CE.

In one example, the first terminal device may send the second terminal capability to the first network device or the second terminal device.

In one example, the second terminal capability is reported for a frequency band (ie, different frequency bands can independently report corresponding capabilities, per Different frequency bands are reported independently, which can give the terminal greater freedom. For example, the terminal can support this function on one or some frequency bands, but not on other frequency bands, so that more terminals can support this new function.

In one example, the second terminal capability is reported independently according to the band combination (i.e., different band combinations can independently report corresponding capabilities, per band combination). Independent reporting of different band combinations can give the terminal greater freedom. For example, the terminal may not support this function under a certain band combination, but support this function under another band combination, so that more terminals can support this new function.

In one example, the second terminal capability is reported independently for each frequency band in a band combination (i.e., frequency bands in different frequency band combinations can be reported independently, per band per band combination). Independent reporting of each frequency band in different frequency band combinations can enable the terminal to have greater freedom. For example, the terminal may not support this function under a certain frequency band combination, but support this function in some frequency bands under another frequency band combination, so that more terminals can support this new function.

In one example, the second terminal capability is reported independently for each carrier on each frequency band in a band combination (i.e., different carriers CC in frequency bands in different frequency band combinations can be reported independently, per CC per band per band combination, or FSPC). Different frequency band combinations are reported independently, and different carriers on a frequency band can also be reported independently, which can give the terminal greater freedom, so that more terminals can support this new function.

In one example, the second terminal capability is reported according to the frequency range (FR) (i.e. different FRs can be reported independently, per FR, i.e. FR1 and FR2 are reported independently). Independent reporting of different FRs can give the terminal greater freedom. For example, the terminal device does not support this function at a low frequency (such as FR1), but supports this function at a high frequency (such as FR2), so that more terminals can support this new function.

In one example, the second terminal capability is reported per UE (i.e., per UE, that is, if the UE reports this capability, then this capability can be supported on all frequency bands). This approach can reduce the signaling overhead of reporting terminal capabilities.

In some implementations, before the first terminal device receives the first indication information, the following steps may also be included:

The first terminal device sends a third terminal capability, and the third terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS and/or the power information of the second DMRS through the first indication information, or the third terminal capability indicates that the first terminal device supports indicating the first DMRS and/or the second DMRS through the first indication information. For example, the third terminal capability indicates that the first terminal device supports DCI and/or MAC CE to indicate one of multiple DMRSs.

Among them, the third terminal capabilities can be transmitted via RRC signaling and/or MAC CE.

In one example, the first terminal device may send the third terminal capability to the first network device or the second terminal device.

In one example, the third terminal capability is reported for the frequency band (i.e., different frequency bands can independently report the corresponding capabilities, per band). Independent reporting of different frequency bands can give the terminal greater freedom. For example, the terminal can support this function on one or some frequency bands, but not on other frequency bands, so that more terminals can support this new function.

In one example, the third terminal capability is reported independently according to the band combination (i.e., different band combinations can independently report corresponding capabilities, per band combination). Independent reporting of different band combinations can give the terminal greater freedom. For example, the terminal may not support this function under a certain band combination, but support this function under another band combination, so that more terminals can support this new function.

In one example, the third terminal capability is reported independently for each frequency band in a band combination (i.e., frequency bands in different frequency band combinations can be reported independently, per band per band combination). Independent reporting of each frequency band in different frequency band combinations can allow the terminal to have greater freedom. For example, the terminal may not support this function in a certain frequency band combination, but support this function in some frequency bands in another frequency band combination, so that more terminals can support this new function.

In one example, the third terminal capability is reported independently for each carrier on each frequency band in a band combination (i.e., different carriers CC in frequency bands in different frequency band combinations can be reported independently, per CC per band per band combination, or FSPC). Different frequency band combinations are reported independently, and different carriers on a frequency band can also be reported independently, which can give the terminal greater freedom, so that more terminals can support this new function.

In one example, the third terminal capability is reported according to the frequency range (FR) (that is, different FRs can be reported independently, per FR, that is, FR1 and FR2 are reported independently). Independent reporting of different FRs can give the terminal greater freedom. For example, the terminal device does not support this function at a low frequency (such as FR1), but supports this function at a high frequency (such as FR2), so that more terminals can support this new function.

In one example, the third terminal capability is reported per UE (i.e., per UE, that is, if the UE reports this capability, then this capability can be supported on all frequency bands). This approach can reduce the signaling overhead of reporting terminal capabilities.

The present application also provides a power indication method, which can be applied to the first network device or the second terminal device. FIG3 is a schematic flow chart of a power indication method 300 according to an embodiment of the present application. The method can optionally be applied to the first network device or the second terminal device. The method includes at least part of the following contents.

S310. The first network device or the second terminal device sends first indication information, where the first indication information indicates a first DMRS and/or power information of the first DMRS.

In some implementations, one or more REs used by the first DMRS are the same as the REs used by data.

In some implementations, the first indication information includes a first field, where the first field indicates the first DMRS and/or power information of the first DMRS.

In some implementations, when the value of the first domain is a first value, the first domain indicates the first DMRS and/or power information of the first DMRS.

In some implementations, when the value of the first field is the second value, the first field indicates the second DMRS and/or power information of the second DMRS.

In one example, the value of the first field is only the first value, and the first field indicates the power information of the first DMRS.

In some implementations, when the value of the first domain is the first value, the corresponding data transmission uses the first DMRS; when the value of the first domain is the second value, the corresponding data transmission uses the second DMRS.

In some implementations, the first indication information further includes a second field, and the second field indicates that the data transmission uses the first DMRS and/or the second DMRS.

In some implementations, when the second field indicates that the data transmission uses the first DMRS, the first field indicates power information of the first DMRS.

In some implementations, when the second field indicates that the second DMRS is used for data transmission, the first field indicates power information of the second DMRS.

In some implementations, when the second field indicates that the data transmission uses the second DMRS, the first field is ignored, or the first field indicates a predetermined value.

In some implementations, when the second field indicates that the data transmission uses the first DMRS and the second DMRS, the first field indicates power information of the first DMRS.

In some implementations, when the second field indicates that data transmission uses the first DMRS and the second DMRS, the first field indicates power information of the first DMRS and power information of the second DMRS.

In some implementations, the REs used by the second DMRS are different from the REs used by data.

In some implementations, the first network device or the second terminal device sends and/or receives data according to the first DMRS and/or the power information of the first DMRS.

In some implementations, the first network device or the second terminal device sends and/or receives data according to the power information of the first DMRS and/or the first DMRS, including:

The first network device or the second terminal device determines the power of the first DMRS according to the power information of the first DMRS;

The first network device or the second terminal device sends and/or receives data according to the power of the first DMRS.

In some implementations, the power information of the first DMRS includes: one or a group of power offset values of the first DMRS.

In some implementations, the first network device or the second terminal device determines the power of the first DMRS according to the power information of the first DMRS, including:

The first network device or the second terminal device determines the power of the first DMRS according to the first power and one or a group of power offset values of the first DMRS.

In some embodiments, it also includes that the first network device or the second terminal device sends first configuration information, the first configuration information configures multiple or multiple groups of power offset values; the one or a group of power offset values of the first DMRS is one or a group of power offset values among the multiple or multiple groups of power offset values.

In some implementations, the first network device or the second terminal device sends second indication information, where the second indication information indicates the first power.

In some embodiments, the second indication information is transmitted via RRC signaling and/or MAC CE signaling.

In some implementations, the first power includes power corresponding to a first DMRS during a previous data transmission.

In some implementations, the power information of the first DMRS includes: one or a group of power parameters of the first DMRS.

In some implementations, the first network device or the second terminal device determines the power of the first DMRS according to the power information of the first DMRS, including:

The first network device or the second terminal device determines the power of the first DMRS according to one or a group of power parameters of the first DMRS.

In some embodiments, it also includes that the first network device or the second terminal device sends a third indication information, and the third indication information configures multiple or multiple groups of power parameters; the one or a group of power parameters of the first DMRS is one or a group of power parameters among the multiple or multiple groups of power parameters.

In some implementations, the third indication information is transmitted via RRC signaling and/or MAC CE signaling.

In some embodiments, the first indication information is transmitted via DCI signaling and/or MAC CE signaling.

In some implementations, before the first network device or the second terminal device sends the first indication information, the method further includes:

The first network device or the second terminal device receives the first terminal capability sent by the first terminal device, where the first terminal capability indicates that the first terminal device supports the first DMRS.

In some embodiments, the first terminal capabilities are transmitted via RRC signaling and/or MAC CE.

In some implementations, before the first network device or the second terminal device sends the first indication information, the method further includes:

The first network device or the second terminal device receives the second terminal capability sent by the first terminal device, and the second terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS through the first indication information.

In some embodiments, the second terminal capabilities are transmitted via RRC signaling and/or MAC CE.

In some implementations, before the first network device or the second terminal device sends the first indication information, the method further includes:

The first network device or the second terminal device receives the third terminal capability sent by the first terminal device, and the third terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS and/or the power information of the second DMRS through the first indication information, or the third terminal capability indicates that the first terminal device supports indicating the first DMRS and/or the second DMRS through the first indication information.

In some embodiments, the third terminal capabilities are transmitted via RRC signaling and/or MAC CE.

For a specific example of the first network device or the second terminal device executing the method 300 of this embodiment, reference may be made to the relevant description about the first network device or the second terminal device in the above method 200, which will not be repeated here for the sake of brevity.

The following is a detailed description of specific embodiments with reference to the accompanying drawings.

In the embodiments of the present application, "data" may refer to general data to be transmitted, or may refer to control information.

Embodiment 1:

This embodiment introduces the first DMRS and the second DMRS.

1. First demodulation reference signal (referred to as first DMRS): One or more or all REs of the first DMRS are also REs used by data (including general data or control information) (to simplify the description, these REs can be referred to as shared REs). The first DMRS can also be referred to as non-orthogonal DMRS, because one or some REs in the first DMRS are used for data transmission at the same time, so the first DMRS time-frequency resources overlap with the data transmission time-frequency resources and are not orthogonal. The first DMRS and data use the same REs, so that data can use more REs, which can increase the transmission rate or improve the transmission reliability.

Taking PDSCH transmission as an example, assuming that the network schedules 8 symbols (which can be other numbers, such as 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, etc.) for data transmission, the frequency domain range is 12 subcarriers (which can also be other numbers, such as 4, 8, 16, etc.), that is, a total of 12*8=96 REs. As shown in Table 1, the time-frequency range, each grid in Table 1 represents 1 RE, in Table 1, all REs are used for data and the first DMRS transmission at the same time.

Table 1

Another example is shown in Table 2, where each grid in Table 2 represents one RE. In Table 2, the RE represented by the small grid filled with a pattern is used for both data and the first DMRS transmission; the RE represented by the small grid without a pattern filling is only used for data transmission. In another example, the 12 REs corresponding to the first symbol (i.e., symbol 0) in the PDSCH time-frequency resource are used for both data and the first DMRS transmission, and the REs corresponding to other symbols (i.e., symbols 1 to 7) are only used for data transmission.

Table 2

It should be noted that in a code division multiple access (CDMA) system, although the pilot signal (including DMRS) and the data signal (including the data signal related to the control information) can be transmitted on the same time-frequency resource, both the pilot signal and the data signal need to undergo additional spread spectrum processing, for example, the pilot signal and the data signal need to use different orthogonal codes to distinguish them; in other words, in CDMA in the related art, the pilot signal and the data signal transmitted on the same time-frequency resource are the pilot signal and the data signal after spread spectrum processing. The embodiments of the present application are mainly applied to OFDM systems/SC-FDMA systems, as well as other systems based on multiple sub-carriers, and the modulation symbols of the data signal (such as QPSK, and 16QAM) and the modulation symbols of the demodulated pilot signal can be directly transmitted on the same time-frequency resource, and the pilot signal and the data signal do not need to undergo additional spread spectrum processing; that is, in the schemes provided in the subsequent embodiments of the present application, the pilot signal and the data signal transmitted on the same time-frequency resource can be the pilot signal and the data signal that have not undergone spread spectrum processing.

2. Second DMRS: REs used by the second DMRS cannot be used for data, that is, data and the second DMRS use different REs, or the second DMRS and data use different time-frequency resources (that is, the time-frequency resources used by the second DMRS are orthogonal to the time-frequency resources used by the data). Table 3 is an example of a second DMRS. Each grid in Table 3 represents one RE. In Table 3, REs represented by small grids filled with patterns are used for second DMRS transmission; REs represented by small grids without pattern filling are used for data transmission.

The second DMRS may also be called an orthogonal DMRS, because the time-frequency resources of the second DMRS do not overlap with the time-frequency resources of data transmission and are orthogonal.

Table 3

The first DMRS and the second DMRS introduced in this embodiment are applicable to subsequent embodiments.

Embodiment 2:

In this embodiment, the first indication information includes a first field and a second field.

The first terminal device receives first indication information sent by the first network device or the second terminal device (corresponding to the sidelink scenario), where the first indication information indicates power information of a first demodulation reference signal (recorded as a first DMRS), and one or more or all REs of the first DMRS are also REs used for data (including general data or control information), and these REs can be called shared REs.

The power information may include one or more of a power offset value, a power parameter, a power parameter offset value, parameters related to calculating path loss, and other parameters.

The first indication information may be transmitted via DCI signaling and/or MAC CE signaling.

The first indication information contains two fields, which are respectively recorded as a first field and a second field.

When the value of the second domain is the third value, the second domain indicates that the first DMRS is used for data transmission;

In this case, if the first indication information schedules a first data transmission (eg, PUSCH, or PDSCH, or other transmission), the first data transmission uses a first DMRS, and the first field indicates power information of the first DMRS.

When the second domain takes the fourth value, the second domain indicates that the second DMRS is used for data transmission.

In this case, if the first indication information schedules the first data transmission (eg, PUSCH, or PDSCH, or other transmission), the first data transmission uses the second DMRS, and the first field can indicate the power information of the second DMRS, or the information of the first field can be ignored.

The second domain may also be a fifth value. When the second domain takes the fifth value, the second domain indicates that the first DMRS and the second DMRS are used for data transmission.

In this case, if the first indication information schedules the first data transmission (eg, PUSCH, or PDSCH, or other transmission), the first data transmission may use the first DMRS, or the first data transmission may use the first DMRS and the second DMRS. Furthermore, the first field indicates the power information of the first DMRS.

In this embodiment, the first field may indicate the power information of the first DMRS. Alternatively, the first field may indicate the power information of the first DMRS or the power information of the second DMRS.

In some embodiments, the power information may include a power offset value. Assume that the first domain can have X values (i.e., corresponding to X different first values), which are respectively recorded as the first code point (codepoint), the second code point, ..., the Xth code point. Each code point can indicate a power offset value or a group of power offset values. The power offset value can be a dB value or a linear value. In signaling indication or use, corresponding conversion (for example, from a dB value to a linear value, or from a linear value to a dB value) may be required, which is not repeated in each example of the present invention.

In an implementation example, the first network device or the second terminal device configures multiple power offset values or multiple groups of power offset values for the first terminal device through the first configuration information. For example, the network can configure X power offset values/X groups of power offset values, and one code point corresponds to one power offset value/a group of power offset values; for another example, the network can configure X-1 power offset values/X-1 groups of power offset values, and one code point corresponds to a power offset value of 0 (i.e., no power offset), and each of the other X-1 code points corresponds to a power offset value/a group of power offset values. For example, the network can configure K1 power offset values/K1 groups of power offset values (K1<X-1), one code point corresponds to a power offset value of 0 (i.e., no power offset), and each of the other K1 code points corresponds to a power offset value/a group of power offset values, and the remaining X-K1-1 code points can be reserved and not used; or, the remaining X-K1-1 code points can correspond to a fixed power offset value (for example, 0) according to the protocol provisions; or, the remaining X-K1-1 code points can correspond to one or a group of K1 power offset values/K1 groups of power offset values according to the protocol provisions. For another example, the network can configure K1 power offset values/K1 groups of power offset values (K1<X-1), each of the K1 code points corresponds to a power offset value/a group of power offset values, and the remaining X-K1 code points can be reserved and not used; or, the remaining X-K1 code points can correspond to a fixed power offset value (e.g., 0) according to the protocol; or, the remaining X-K1 code points can correspond to one or a group of K1 power offset values/K1 groups of power offset values according to the protocol. The correspondence between code points and power offset values can be implemented in different ways, such as determining which code point corresponds to which power offset value/which group of power offset values through predetermined rules (possible options are protocol fixed, network configuration, etc.).

In another implementation example, the protocol specifies a power offset value corresponding to each first value (ie, each codepoint), wherein the power offset value corresponding to one or more codepoints may be 0 (ie, no power offset).

When configuring multiple or multiple groups of power offset values, the first DMRS and the second DMRS may be independently configured, for example, multiple or multiple groups of power offset values may be configured for the first DMRS, and another multiple or multiple groups of power offset values may be configured for the second DMRS. Accordingly, when the first DMRS is used for data transmission, the power of the first DMRS is determined using the multiple or multiple groups of power offset values configured for the first DMRS; when the second DMRS is used for data transmission, the power of the second DMRS is determined using the multiple or multiple groups of power offset values configured for the second DMRS.

In the above example, the power offset value may refer to an increase or decrease in power on a first power (for example, if the first power is P and the power offset value is D, the power of the first DMRS or the second DMRS is calculated as P+D; where D may be a positive number, a negative number or 0). The actual power may need to be further processed based on P+D, for example, it cannot exceed the maximum allowed transmit power.

Among them, the first terminal device can determine the first power (i.e. corresponding to the P described above) according to the second indication information, and the power offset value is to increase or decrease the power (D) based on the first power. The second indication information can be sent to the first terminal device by the first network device or the second terminal device. The second indication information can be transmitted through RRC signaling and/or MAC CE signaling.

When the first power is configured using the second indication information, the first DMRS and the second DMRS may also be independently configured, for example, a first power is configured for the first DMRS, and another first power is configured for the second DMRS. Accordingly, when the first DMRS is used for data transmission, the power of the first DMRS is determined using the first power configured for the first DMRS; when the second DMRS is used for data transmission, the power of the second DMRS is determined using the second power configured for the second DMRS.

Alternatively, the first power may be the power of the previous data transmission. For example, for PDSCH data transmission, the first power may be the power corresponding to the DMRS in the previous PDSCH; for PUSCH data transmission, the first power may be the power corresponding to the DMRS in the previous PUSCH. The previous data transmission described here may also include the situation that the previous data transmission uses the same DMRS. For example, if the power of the first DMRS is considered, then the "previous data transmission" may be the "previous data transmission using the first DMRS". Other situations are similar and will not be elaborated one by one.

In some embodiments, the power information may include a power parameter or a power parameter offset value. The first domain may indicate a power parameter/power parameter offset value of a first DMRS, or a power parameter/power parameter offset value of a second DMRS. The power parameter may be used to calculate power. Assume that the first domain may have X values (i.e., corresponding to X different first values), which are respectively recorded as the first code point (codepoint), the second code point, ..., the Xth code point. Each code point may indicate a power parameter/power parameter offset value, or indicate a group of power parameters/power parameter offset values.

In an implementation example, the first network device or the second terminal device configures multiple power parameters/power parameter offset values, or configures multiple groups of power parameters/power parameter offset values for the first terminal device through the first configuration information. For example, the network can configure X power parameter offset values/X groups of power parameter offset values, and one code point corresponds to one power parameter offset value/a group of power parameter offset values; for example, the network can configure X-1 power parameter offset values, and one code point corresponds to a power parameter offset value of 0 (i.e., no power parameter offset), and each of the other X-1 code points corresponds to a power parameter offset value/a group of power parameter offset values. For example, the network can configure K1 power parameter offset values/K1 groups of power parameter offset values (K1<X-1), one code point corresponds to a power parameter offset value of 0 (i.e., no power parameter offset), and each of the other K1 code points corresponds to a power parameter offset value/a group of power parameter offset values, and the remaining X-K1-1 code points can be reserved and not used; or, the remaining X-K1-1 code points can correspond to a fixed power parameter offset value (for example, 0) according to the protocol provisions; or, the remaining X-K1-1 code points can correspond to one or a group of K1 power parameter offset values/K1 groups of power parameter offset values according to the protocol provisions. For example, the network can be configured with K1 power parameter offset values/K1 groups of power parameter offset values (K1<X-1), each of the K1 code points corresponds to a power parameter offset value/a group of power parameter offset values, and the remaining X-K1 code points can be reserved and not used; or, the remaining X-K1 code points can correspond to a fixed power parameter offset value (for example, 0) according to the protocol provisions; or, the remaining X-K1 code points can correspond to one or a group of K1 power parameter offset values/K1 groups of power parameter offset values according to the protocol provisions.

The correspondence between the code point and the power parameter/power parameter offset value can be implemented in different ways, for example, by determining which code point corresponds to which power parameter/power parameter offset value, or which group of power parameters/power parameter offset values, through a predetermined rule (possible options are protocol fixed, network configuration, etc.). When the power parameter/power parameter offset value is specified by the protocol or configured by the network, it can be specified or configured independently for the first DMRS and the second DMRS, for example, the power parameter/power parameter offset value is specified or configured for the first DMRS, and the power parameter/power parameter offset value is specified or configured for the second DMRS. Accordingly, in the case where the first DMRS is used for data transmission, the power of the first DMRS is determined using the power parameter/power parameter offset value specified or configured for the first DMRS; in the case where the second DMRS is used for data transmission, the power of the second DMRS is determined using the power parameter/power parameter offset value specified or configured for the second DMRS.

In another implementation example, the protocol specifies a power parameter/power parameter offset value corresponding to each first value (ie, each codepoint), wherein the power parameter offset value corresponding to one or more codepoints may be 0 (ie, no power parameter offset).

In the above example, the power parameter offset value may refer to an increase or decrease based on a certain power parameter (for example, a certain power parameter is A, and the power parameter offset value is D (D can be positive, negative or 0), then the offset power parameter is A+D, and A+D is used to calculate the power corresponding to the DMRS. The actual power may also need to be further processed based on the calculated power, for example, it cannot exceed the maximum allowed transmit power.

The first terminal device may determine the power parameter (i.e., corresponding to A described above) according to the second indication information, and increase or decrease the power parameter offset (D) based on the power parameter, and then use the offset power parameter (i.e., A+D) to calculate the power corresponding to the DMRS. The second indication information may be transmitted via RRC signaling and/or MAC CE signaling.

An implementation example is: the first terminal device receives the third indication information sent by the first network device or the second terminal device, the third indication information indicates multiple first power parameters, the value of the first domain can be 1 or more first values (i.e. 1 codepoint or multiple codepoints), and each first value indicates 1 first power parameter among the multiple first power parameters. For example, if the third indication information indicates K2 first power parameters, then the K2 codepoints correspond to 1 first power parameter among the K2 first power parameters. The remaining X-K2 (or X-K2-1, the other one can correspond to a fixed value, such as 0) codepoints can be reserved and not used; or, the remaining X-K2 codepoints correspond to a fixed power parameter according to the protocol (for example, the fixed power parameter can be a fixed power offset value, and the fixed power offset value is 0); or, the remaining X-K2 (or X-K2-1, the other one can correspond to a fixed value, such as 0) codepoints correspond to one of the K2 first power parameters according to the protocol.

Another implementation example is: the first terminal device receives the third indication information sent by the first network device or the second terminal device, the third indication information indicates multiple groups of first power parameters, and the value of the first field can be one or more first values (i.e., one codepoint or multiple codepoint), each first value indicates one group of first power parameters in multiple groups of first power parameters. For example, if the third indication information indicates K3 groups of first power parameters, then the K3 codepoints correspond to one group of first power parameters in the K3 groups of first power parameters. The remaining X-K3 (or X-K3-1, the other one can correspond to a group of fixed parameters) codepoints can be reserved and not used; or, the remaining X-K3 codepoints correspond to a group of fixed power parameters according to the protocol; or, the remaining X-K3 (or X-K3-1, the other one can correspond to a group of fixed parameters) codepoints correspond to a certain group of the K3 groups of first power parameters according to the protocol.

Through the above process, the first terminal device can determine the power of the first DMRS or the second DMRS, and send and/or receive signals according to the power.

In addition, before receiving the first indication information, the first terminal device may also report its own capabilities to the first network device or the second terminal device. For example, the first terminal device sends at least one of the first terminal capabilities, the second terminal capabilities, and the third terminal capabilities. The specific sending method can refer to the above content and will not be repeated here.

Embodiment three:

In this embodiment, the first indication information includes a first field, and the first field may indicate power information of the first DMRS, and may also indicate power information of the second DMRS and/or the second DMRS.

The first terminal device receives first indication information sent by the first network device or the second terminal device (corresponding to the sidelink scenario), where the first indication information indicates power information of a first demodulation reference signal (recorded as a first DMRS), and one or more or all REs of the first DMRS are also REs used for data (including general data or control information), and these REs can be called shared REs.

The power information may include one or more of a power offset value, a power parameter, a power parameter offset value, parameters related to calculating path loss, and other parameters.

The first indication information can be transmitted via DCI signaling and/or MAC CE signaling.

The first indication information contains one field, namely, the first field.

The values of the first domain include at least 2 categories, namely K4 different first values and K5 different second values (K5 can be 1, or K5 can be greater than 1). Assume that the first domain can have at least K4+K5 values, that is, there are K4+K5 code points, where K4 code points correspond to K4 first values and K5 code points correspond to K5 second values.

The first domain can have X values (i.e., X different codepoints). If X>K4+K5, the remaining X-K4-K5 codepoints (i.e., excluding the K4 codepoints corresponding to the first value and the K5 codepoints corresponding to the second value) can be retained and not used.

When the first field indicates a second value, the first field indicates the second DMRS and/or the power information of the second DMRS. If the first indication information schedules the first data transmission (eg, PUSCH, or PDSCH, other transmission), the first data transmission uses the second DMRS;

When the first field indicates a first value, the first field indicates power information of the first DMRS.

In some embodiments, the power information may include a power offset value. In one example, each of the K4 codepoints (i.e., each of the K4 first values) indicates a power offset value. The power offset value may be a dB value or a linear value. In signaling indication or use, corresponding conversion (e.g., from a dB value to a linear value, or from a linear value to a dB value) may be required, which is not described in detail in each example of the present invention.

In an implementation example, the first network device or the second terminal device configures multiple power offset values or multiple groups of power offset values for the first terminal device through the first configuration information. For example, the network can configure K4 power offset values/K4 groups of power offset values, and each of the K4 code points corresponds to a power offset value/a group of power offset values; for example, the network can configure K4-1 power offset values, one code point corresponds to a power offset value of 0 (i.e., no power offset), and each of the other K4-1 code points corresponds to a power offset value/a group of power offset values. The correspondence between code points and power offset values can be implemented in different ways, such as determining which code point corresponds to which power offset value through predetermined rules (possible options are protocol fixed, network configuration, etc.).

In the above example, the power offset value may refer to an increase or decrease in power at a certain first power (for example, if the first power is P and the power offset value is D, then the power of the first DMRS or the second DMRS is calculated to be P+D; where D may be a positive number, a negative number, or 0). For example, the protocol specifies a power offset value corresponding to each first value (i.e., each codepoint in the K4 codepoints), wherein the power offset value corresponding to one or more codepoints may be 0 (i.e., no power offset).

Among them, the first terminal device can determine the first power (i.e. corresponding to the P described above) according to the second indication information, and the power offset value is to increase or decrease the power (D) based on the first power. The second indication information can be sent to the first terminal device by the first network device or the second terminal device. The second indication information can be transmitted through RRC signaling and/or MAC CE signaling.

Alternatively, the first power may be the power of the previous data transmission. For example, for PDSCH data transmission, the first power may be the power corresponding to the DMRS in the previous PDSCH; for PUSCH data transmission, the first power may be the power corresponding to the DMRS in the previous PUSCH.

In some embodiments, the power information may include a power parameter or a power parameter offset value. The first domain may indicate a power parameter/power parameter offset value of a first DMRS, or a power parameter/power parameter offset value of a second DMRS. The correspondence between a code point and a power parameter/power parameter offset value may be implemented in different ways, such as by determining which code point corresponds to which power parameter/power parameter offset value, or which group of power parameters/power parameter offset values, through a predetermined rule (possible options are protocol fixed, network configuration, etc.).

In the above example, the power parameter offset value may refer to an increase or decrease based on a certain power parameter (for example, a certain power parameter is A, and the power parameter offset value is D (D may be a positive number, a negative number or 0), then the offset power parameter is A+D, and A+D is used to calculate the power corresponding to the DMRS.

Among them, the first terminal device can determine the power parameter (i.e. corresponding to the A described above) according to the second indication information, and increase or decrease the power parameter offset (D) based on the power parameter, and then use the offset power parameter (i.e. A+D) to calculate the power corresponding to the DMRS.

An implementation example is: the first terminal device receives the third indication information sent by the first network device or the second terminal device, the third indication information indicates multiple first power parameters, the value of the first domain has one or more first values (i.e., one code point or multiple code points among K4 code points), and each first value indicates one first power parameter among multiple first power parameters. For example, if the third indication information indicates K4 first power parameters, then the K4 code points correspond to one first power parameter among the K4 first power parameters.

Another implementation example is: the first terminal device receives the third indication information sent by the first network device or the second terminal device, the third indication information indicates multiple groups of first power parameters, there are one or more first values (i.e. one or more code points in K4 code points) in the value of the first domain, and each first value indicates one group of first power parameters in the multiple groups of first power parameters. For example, if the third indication information indicates K3 groups of first power parameters, then K3 code points correspond to one group of first power parameters in K3 groups of first power parameters.

Through the above process, the first terminal device can determine the power of the first DMRS or the second DMRS, and send and/or receive signals according to the power.

In addition, before receiving the first indication information, the first terminal device may also report its own capabilities to the first network device or the second terminal device. For example, the first terminal device sends at least one of the first terminal capabilities, the second terminal capabilities, and the third terminal capabilities. The specific sending method can refer to the above content and will not be repeated here.

Embodiment 4:

In this embodiment, the first indication information includes a first field, and the first field only indicates the power information of the first DMRS but does not indicate the power information of the second DMRS.

The first terminal device receives first indication information sent by the first network device or the second terminal device (corresponding to the sidelink scenario), where the first indication information indicates power information of a first demodulation reference signal (recorded as a first DMRS), and one or more or all REs of the first DMRS are also REs used for data (including general data or control information), and these REs can be called shared REs.

The power information may include one or more of a power offset value, a power parameter, a power parameter offset value, parameters related to calculating path loss, and other parameters.

The first indication information can be transmitted via DCI signaling and/or MAC CE signaling.

The first indication information contains one field, namely, the first field. The first field may indicate power information of the first DMRS.

In some embodiments, the power information may include a power offset value, and the first domain may indicate the power offset value of the first DMRS. Assume that the first domain can have X values (i.e., corresponding to X different first values), which are respectively recorded as the first code point (codepoint), the second code point, ..., the Xth code point. Each code point can indicate a power offset value or a group of power offset values. The power offset value can be a dB value or a linear value. In signaling indication or use, corresponding conversion may be required (for example, from a dB value to a linear value, or from a linear value to a dB value), which is not repeated in the various examples of the present invention.

In an implementation example, the first network device or the second terminal device configures multiple power offset values or multiple groups of power offset values for the first terminal device through the first configuration information. For example, the network can configure X power offset values/X groups of power offset values, and one code point corresponds to one power offset value/a group of power offset values; for another example, the network can configure X-1 power offset values/X-1 groups of power offset values, and one code point corresponds to a power offset value of 0 (i.e., no power offset), and each code point in the other X-1 code points corresponds to a power offset value/a group of power offset values. For example, the network can configure K6 power offset values/K6 groups of power offset values (K6<X-1), and one code point corresponds to a power offset value of 0 (i.e., no power offset), and each code point in the other K6-1 code points corresponds to a power offset value/a group of power offset values, and the remaining X-K6 code points can be retained and not used; or, the remaining X-K6 code points can correspond to To a fixed power offset value (e.g., 0); or, the remaining X-K6 code points may correspond to one or a group of K6 power offset values/K6 groups of power offset values according to the protocol. The correspondence between code points and power offset values may be implemented in different ways, such as by determining which code point corresponds to which power offset value/which group of power offset values through a predetermined rule (possible options are protocol fixed, network configuration, etc.).

In another implementation example, the protocol specifies a power offset value corresponding to each first value (ie, each codepoint), wherein the power offset value corresponding to one or more codepoints may be 0 (ie, no power offset).

In the above example, the power offset value may refer to an increase or decrease in power at a certain first power (for example, if the first power is P and the power offset value is D, then the power of the first DMRS is calculated to be P+D; where D may be a positive number, a negative number or 0).

Among them, the first terminal device can determine the first power (i.e. corresponding to the P described above) according to the second indication information, and the power offset value is to increase or decrease the power (D) based on the first power. The second indication information can be sent to the first terminal device by the first network device or the second terminal device. The second indication information can be transmitted through RRC signaling and/or MAC CE signaling.

Alternatively, the first power may be the power of the previous data transmission. For example, for PDSCH data transmission, the first power may be the power corresponding to the DMRS in the previous PDSCH; for PUSCH data transmission, the first power may be the power corresponding to the DMRS in the previous PUSCH.

In some embodiments, the power information may include a power parameter or a power parameter offset value. The first domain may indicate a power parameter/power parameter offset value of the first DMRS. The power parameter may be used to calculate power. Assume that the first domain may have X values (i.e., corresponding to X different first values), which are respectively recorded as the first code point (codepoint), the second code point, ..., the Xth code point. Each code point may indicate a power parameter/power parameter offset value, or indicate a group of power parameters/power parameter offset values.

In an implementation example, the first network device or the second terminal device configures multiple power parameters/power parameter offset values, or configures multiple groups of power parameters/power parameter offset values for the first terminal device through the first configuration information. For example, the network can configure X power parameter offset values/X groups of power parameter offset values, and one code point corresponds to one power parameter offset value/a group of power parameter offset values; for example, the network can configure X-1 power parameter offset values, and one code point corresponds to a power parameter offset value of 0 (i.e., no power parameter offset), and each of the other X-1 code points corresponds to a power parameter offset value/a group of power parameter offset values. For example, the network can configure K6 power parameter offset values/K6 groups of power parameter offset values (K1<X-1), one code point corresponds to a power parameter offset value of 0 (i.e., no power parameter offset), and each of the other K6-1 code points corresponds to a power parameter offset value/a group of power parameter offset values, and the remaining X-K6 code points can be retained and not used; or, the remaining X-K6 code points can correspond to a fixed power parameter offset value (for example, 0) according to the protocol provisions; or, the remaining X-K6 code points can correspond to one of the K6 power parameter offset values according to the protocol provisions.

The correspondence between code points and power parameters/power parameter offset values can be implemented in different ways, for example, by determining which code point corresponds to which power parameter/power parameter offset value, or which group of power parameters/power parameter offset values, through predetermined rules (possible options are protocol fixed, network configuration, etc.).

In another implementation example, the protocol specifies a power parameter/power parameter offset value corresponding to each first value (ie, each codepoint), wherein the power parameter offset value corresponding to one or more codepoints may be 0 (ie, no power parameter offset).

In the above example, the power parameter offset value may refer to an increase or decrease based on a certain power parameter (for example, a certain power parameter is A, and the power parameter offset value is D (D may be a positive number, a negative number or 0), then the offset power parameter is A+D, and A+D is used to calculate the power corresponding to the first DMRS.

The first terminal device may determine the power parameter (i.e., corresponding to A described above) according to the second indication information, and increase or decrease the power parameter offset (D) based on the power parameter, and then use the offset power parameter (i.e., A+D) to calculate the power corresponding to the first DMRS. The second indication information may be transmitted via RRC signaling and/or MAC CE signaling.

An implementation example is: the first terminal device receives the third indication information sent by the first network device or the second terminal device, the third indication information indicates multiple first power parameters, the value of the first domain can be one or more first values (i.e., one codepoint or multiple codepoints), and each first value indicates one first power parameter among the multiple first power parameters. For example, if the third indication information indicates K7 first power parameters, then the K7 codepoints correspond to one first power parameter among the K7 first power parameters. The remaining X-K7 (or X-K7-1, the other one can correspond to a fixed value, such as 0) codepoints can be reserved and not used; or, the remaining X-K7 codepoints correspond to a fixed power parameter according to the protocol (for example, the fixed power parameter can be a fixed power offset value, and the fixed power offset value is 0); or, the remaining X-K7 (or X-K7-1, the other one can correspond to a fixed value, such as 0) codepoints correspond to one of the K7 first power parameters according to the protocol.

Another implementation example is: the first terminal device receives the third indication information sent by the first network device or the second terminal device, the third indication information indicates multiple groups of first power parameters, the value of the first domain can be 1 or more first values (i.e. 1 codepoint or multiple codepoints), and each first value indicates 1 group of first power parameters in the multiple groups of first power parameters. For example, if the third indication information indicates K8 groups of first power parameters, then K8 codepoints correspond to 1 group of first power parameters in the K8 groups of first power parameters. The remaining X-K8 (or X-K8-1, the other one can correspond to a set of fixed parameters) codepoints can be reserved and not used; or, the remaining X-K8 codepoints correspond to a set of fixed power parameters according to the protocol; or, the remaining X-K8 (or X-K8-1, the other one can correspond to a set of fixed parameters) codepoints correspond to a group of the first power parameters of the K8 group according to the protocol.

Through the above process, the first terminal device can determine the power of the first DMRS and send and/or receive signals according to the power.

In addition, before receiving the first indication information, the first terminal device may also report its own capabilities to the first network device or the second terminal device. For example, the first terminal device sends at least one of the first terminal capabilities, the second terminal capabilities, and the third terminal capabilities. The specific sending method can refer to the above content and will not be repeated here.

Embodiment five:

This embodiment introduces how to use power information.

In the first indication information received by the first terminal device, the first field may indicate one or a group of power information of the first DMRS, or indicate one or a group of power information of the second DMRS.

For multiple transmission data streams (such as transmission layers), when the first field indicates power information, each data stream can determine the power based on the power information.

For multiple transmission data streams (such as transmission layers), when the first field indicates a set of power information, each data stream may determine power based on one power information in the set of power information.

For example, the first field indicates a power offset value, and the power offset value may be for all transmission data streams (layers), and each data stream in the multiple data streams determines the power based on the power offset value.

For another example, the first domain indicates a set of power offset values, and different power offset values in the set of power offset values may be respectively directed to different transmission data streams (layers).

In one example, the first domain indicates a set of power offset values, which includes 4 values. If the current transmission has only 2 data streams (layers), the first power offset value and the second power offset value in this set of power offset values are used to determine the power of the first data stream and the second data stream, respectively.

In another example, the first domain indicates a set of power offset values, which includes 4 values. If the current transmission has only one data stream (layer), the first power offset value of this set of power offset values is used to determine the power of the first data stream.

In another example, the first domain indicates a set of power offset values, which includes 4 values. If there are 4 data streams (layers) currently being transmitted, the first, second, third and fourth power offset values in this set of power offset values are used to determine the power of the first data stream, the second data stream, the third data stream and the fourth data stream, respectively.

The method introduced in this embodiment is applicable to the above-mentioned embodiments 1 to 4.

FIG4 is a schematic block diagram of a first terminal device 400 according to an embodiment of the present application. The first terminal device 400 may include:

The first transceiver module 410 is configured to receive first indication information, where the first indication information indicates a first DMRS and/or power information of the first DMRS; and send and/or receive data according to the first indication information.

In one embodiment, one or more REs used by the first DMRS are the same as REs used by data.

In one implementation, the first indication information includes a first field, and the first field indicates the first DMRS and/or power information of the first DMRS.

In one implementation, when the value of the first field is the first value, the first field indicates the first DMRS and/or power information of the first DMRS.

In one implementation, when the value of the first field is the second value, the first field indicates the second DMRS and/or power information of the second DMRS.

In one implementation, when the value of the first domain is a first value, data transmission uses a first DMRS;

When the value of the first domain is the second value, the second DMRS is used for data transmission.

In one implementation, the first indication information further includes a second field, and the second field indicates that the data transmission uses the first DMRS and/or the second DMRS.

In one implementation, when the second field indicates that the first DMRS is used for data transmission, the first field indicates the first DMRS and/or power information of the first DMRS.

In one implementation, when the second field indicates that the second DMRS is used for data transmission, the first field indicates the second DMRS and/or power information of the second DMRS.

In one implementation, when the second field indicates that the second DMRS is used for data transmission, the first field is ignored, or the first field indicates a predetermined value.

In one example, the value of the first field is only the first value, and the first field indicates the power information of the first DMRS.

In one implementation, when the second field indicates that the data transmission uses the first DMRS and the second DMRS, the first field indicates the first DMRS and/or power information of the first DMRS.

In one implementation, REs used by the second DMRS are different from REs used by data.

In one implementation, the first transceiver module 410 is configured to:

Determining the power of the first DMRS according to the power information of the first DMRS;

Data is transmitted and/or received according to the power of the first DMRS.

In one implementation, the power information of the first DMRS includes: one or a group of power offset values of the first DMRS.

In one implementation, the first transceiver module 410 is configured to:

The power of the first DMRS is determined according to the first power and one or a group of power offset values of the first DMRS.

In one embodiment, the first transceiver module 410 is also used to receive first configuration information, which configures multiple or multiple groups of power offset values; the one or one group of power offset values of the first DMRS is one or one group of power offset values among the multiple or multiple groups of power offset values.

In one implementation, the first transceiver module 410 is further configured to receive second indication information, and the first power is determined according to the second indication information.

In one embodiment, the second indication information is transmitted via RRC signaling and/or MAC CE signaling.

In one implementation, the first power includes power corresponding to the first DMRS during previous data transmission.

In one implementation, the power information of the first DMRS includes: one or a group of power parameters of the first DMRS.

In one implementation, the first transceiver module 410 is configured to:

The power of the first DMRS is determined according to one or a group of power parameters of the first DMRS.

In one implementation, the first transceiver module 410 is further used to receive third indication information, which configures multiple or multiple groups of power parameters; the one or one group of power parameters of the first DMRS is one or one group of power parameters among the multiple or multiple groups of power parameters.

In one embodiment, the third indication information is transmitted via RRC signaling and/or MAC CE signaling.

In one implementation, the first transceiver module 410 is configured to:

Receive first indication information sent by the first network device or the second terminal device.

In one embodiment, the first indication information is transmitted via DCI signaling and/or MAC CE signaling.

In one implementation, the first transceiver module 410 is further configured to:

A first terminal capability is sent, where the first terminal capability indicates that the first terminal device supports a first DMRS.

In one embodiment, the first terminal capabilities are transmitted via RRC signaling and/or MAC CE.

In one implementation, the first transceiver module 410 is further used to send a second terminal capability, where the second terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS through the first indication information.

In one embodiment, the second terminal capabilities are transmitted via RRC signaling and/or MAC CE.

In one embodiment, the first transceiver module 410 is also used to send a third terminal capability, where the third terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS and/or the power information of the second DMRS through the first indication information, or the third terminal capability indicates that the first terminal device supports indicating the first DMRS and/or the second DMRS through the first indication information.

In one embodiment, the third terminal capabilities are transmitted via RRC signaling and/or MAC CE.

The first terminal device 400 of the embodiment of the present application can implement the corresponding functions of the first terminal device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the first terminal device 400 can be found in the corresponding descriptions in the above method embodiments, which will not be repeated here. It should be noted that the functions described by the various modules (sub-modules, units or components, etc.) in the first terminal device 400 of the embodiment of the application can be implemented by different modules (sub-modules, units or components, etc.) or by the same module (sub-module, unit or component, etc.).

FIG5 is a schematic block diagram of a first network device 500 according to an embodiment of the present application. The first network device 500 may include:

The second transceiver module 510 is configured to send first indication information, where the first indication information indicates the first DMRS and/or power information of the first DMRS.

In one embodiment, one or more REs used by the first DMRS are the same as REs used by data.

In one implementation, the first indication information includes a first field, and the first field indicates the first DMRS and/or power information of the first DMRS.

In one implementation, when the value of the first field is the first value, the first field indicates the first DMRS and/or power information of the first DMRS.

In one implementation, when the value of the first field is the second value, the first field indicates the second DMRS and/or power information of the second DMRS.

In one implementation, when the value of the first domain is a first value, data transmission uses a first DMRS;

When the value of the first domain is the second value, the second DMRS is used for data transmission.

In one implementation, the first indication information further includes a second field, and the second field indicates that the data transmission uses the first DMRS and/or the second DMRS.

In one implementation, when the second field indicates that the first DMRS is used for data transmission, the first field indicates power information of the first DMRS.

In one implementation, when the second field indicates that the second DMRS is used for data transmission, the first field indicates power information of the second DMRS.

In one implementation, when the second field indicates that the second DMRS is used for data transmission, the first field is ignored, or the first field indicates a predetermined value.

In one implementation, when the second field indicates that the first DMRS and the second DMRS are used for data transmission, the first field indicates power information of the first DMRS.

In one implementation, REs used by the second DMRS are different from REs used by data.

In one implementation, the second transceiver module 510 is further configured to send and/or receive data according to the first DMRS and/or the power information of the first DMRS.

In one implementation, the second transceiver module 510 is configured to:

Determining the power of the first DMRS according to the power information of the first DMRS;

Data is transmitted and/or received according to the power of the first DMRS.

In one implementation, the power information of the first DMRS includes: one or a group of power offset values of the first DMRS.

In one implementation, the second transceiver module 510 is configured to:

The power of the first DMRS is determined according to the first power and one or a group of power offset values of the first DMRS.

In one embodiment, the second transceiver module 510 is also used to send first configuration information, which configures multiple or multiple groups of power offset values; one or a group of power offset values of the first DMRS is one or a group of power offset values among the multiple or multiple groups of power offset values.

In one implementation, the second transceiver module 510 is further configured to send second indication information, where the second indication information indicates the first power.

In one embodiment, the second indication information is transmitted via RRC signaling and/or MAC CE signaling.

In one implementation, the first power includes power corresponding to the first DMRS during previous data transmission.

In one implementation, the power information of the first DMRS includes: one or a group of power parameters of the first DMRS.

In one implementation, the second transceiver module 510 is configured to:

The power of the first DMRS is determined according to one or a group of power parameters of the first DMRS.

In one implementation, the second transceiver module 510 is further used to send third indication information, where the third indication information configures multiple or multiple groups of power parameters; the one or one group of power parameters of the first DMRS is one or one group of power parameters among the multiple or multiple groups of power parameters.

In one embodiment, the third indication information is transmitted via RRC signaling and/or MAC CE signaling.

In one embodiment, the first indication information is transmitted via DCI signaling and/or MAC CE signaling.

In one implementation, the second transceiver module 510 is further configured to receive a first terminal capability sent by the first terminal device, where the first terminal capability indicates that the first terminal device supports the first DMRS.

In one embodiment, the first terminal capabilities are transmitted via RRC signaling and/or MAC CE.

In one implementation, the second transceiver module 510 is further used to receive a second terminal capability sent by the first terminal device, where the second terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS through the first indication information.

In one embodiment, the second terminal capabilities are transmitted via RRC signaling and/or MAC CE.

In one embodiment, the second transceiver module 510 is also used to receive a third terminal capability sent by the first terminal device, and the third terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS and/or the power information of the second DMRS through the first indication information, or the third terminal capability indicates that the first terminal device supports indicating the first DMRS and/or the second DMRS through the first indication information.

In one embodiment, the third terminal capabilities are transmitted via RRC signaling and/or MAC CE.

The first network device 500 of the embodiment of the present application can implement the corresponding functions of the first network device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the first network device 500 can be found in the corresponding descriptions in the above method embodiments, which will not be repeated here. It should be noted that the functions described by the various modules (sub-modules, units or components, etc.) in the first network device 500 of the application embodiment can be implemented by different modules (sub-modules, units or components, etc.), or by the same module (sub-module, unit or component, etc.).

FIG6 is a schematic block diagram of a second terminal device 600 according to an embodiment of the present application. The second terminal device 600 may include:

The third transceiver module 610 is configured to send first indication information, where the first indication information indicates the first DMRS and/or power information of the first DMRS.

In one embodiment, one or more REs used by the first DMRS are the same as REs used by data.

In one implementation, the first indication information includes a first field, and the first field indicates the first DMRS and/or power information of the first DMRS.

In one implementation, when the value of the first field is the first value, the first field indicates the first DMRS and/or power information of the first DMRS.

In one implementation, when the value of the first field is the second value, the first field indicates the second DMRS and/or power information of the second DMRS.

In one implementation, when the value of the first domain is a first value, data transmission uses a first DMRS;

When the value of the first domain is the second value, the second DMRS is used for data transmission.

In one implementation, the first indication information further includes a second field, and the second field indicates that the data transmission uses the first DMRS and/or the second DMRS.

In one implementation, when the second field indicates that the first DMRS is used for data transmission, the first field indicates power information of the first DMRS.

In one implementation, when the second field indicates that the second DMRS is used for data transmission, the first field indicates power information of the second DMRS.

In one implementation, when the second field indicates that the second DMRS is used for data transmission, the first field is ignored, or the first field indicates a predetermined value.

In one implementation, when the second field indicates that the first DMRS and the second DMRS are used for data transmission, the first field indicates power information of the first DMRS.

In one implementation, REs used by the second DMRS are different from REs used by data.

In one implementation, the third transceiver module 610 is further configured to send and/or receive data according to the first DMRS and/or the power information of the first DMRS.

In one implementation, the third transceiver module 610 is configured to:

Determining the power of the first DMRS according to the power information of the first DMRS;

Data is transmitted and/or received according to the power of the first DMRS.

In one implementation, the power information of the first DMRS includes: one or a group of power offset values of the first DMRS.

In one implementation, the third transceiver module 610 is configured to:

The power of the first DMRS is determined according to the first power and one or a group of power offset values of the first DMRS.

In one embodiment, the third transceiver module 610 is also used to send first configuration information, which configures multiple or multiple groups of power offset values; one or a group of power offset values of the first DMRS is one or a group of power offset values among the multiple or multiple groups of power offset values.

In one implementation, the third transceiver module 610 is further configured to send second indication information, where the second indication information indicates the first power.

In one embodiment, the second indication information is transmitted via RRC signaling and/or MAC CE signaling.

In one implementation, the first power includes power corresponding to the first DMRS during previous data transmission.

In one implementation, the power information of the first DMRS includes: one or a group of power parameters of the first DMRS.

In one implementation, the third transceiver module 610 is configured to:

The power of the first DMRS is determined according to one or a group of power parameters of the first DMRS.

In one implementation, the third transceiver module 610 is further used to send third indication information, where the third indication information configures multiple or multiple groups of power parameters; the one or one group of power parameters of the first DMRS is one or one group of power parameters among the multiple or multiple groups of power parameters.

In one embodiment, the third indication information is transmitted via RRC signaling and/or MAC CE signaling.

In one embodiment, the first indication information is transmitted via DCI signaling and/or MAC CE signaling.

In one implementation, the third transceiver module 610 is further configured to receive a first terminal capability sent by the first terminal device, where the first terminal capability indicates that the first terminal device supports the first DMRS.

In one embodiment, the first terminal capabilities are transmitted via RRC signaling and/or MAC CE.

In one implementation, the third transceiver module 610 is further used to receive a second terminal capability sent by the first terminal device, where the second terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS through the first indication information.

In one embodiment, the second terminal capabilities are transmitted via RRC signaling and/or MAC CE.

In one embodiment, the third transceiver module 610 is also used to receive a third terminal capability sent by the first terminal device, and the third terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS and/or the power information of the second DMRS through the first indication information, or the third terminal capability indicates that the first terminal device supports indicating the first DMRS and/or the second DMRS through the first indication information.

In one embodiment, the third terminal capabilities are transmitted via RRC signaling and/or MAC CE.

The second terminal device 600 of the embodiment of the present application can implement the corresponding functions of the second terminal device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to each module (submodule, unit or component, etc.) in the second terminal device 600 can be found in the corresponding description in the above method embodiment, which will not be repeated here. It should be noted that the functions described by each module (submodule, unit or component, etc.) in the second terminal device 600 of the application embodiment can be implemented by different modules (submodules, units or components, etc.) or by the same module (submodule, unit or component, etc.).

Fig. 7 is a schematic structural diagram of a communication device 700 according to an embodiment of the present application. The communication device 700 includes a processor 710, and the processor 710 can call and run a computer program from a memory to enable the communication device 700 to implement the method in the embodiment of the present application.

In one implementation, the communication device 700 may further include a memory 720. The processor 710 may call and run a computer program from the memory 720 to enable the communication device 700 to implement the method in the embodiment of the present application.

The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

In one implementation, the communication device 700 may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

The transceiver 730 may include a transmitter and a receiver. The transceiver 730 may further include an antenna, and the number of the antennas may be one or more.

In one implementation, the communication device 700 may be a network device of an embodiment of the present application, and the communication device 700 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

In one implementation, the communication device 700 may be a terminal device of an embodiment of the present application, and the communication device 700 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

Fig. 8 is a schematic structural diagram of a chip 800 according to an embodiment of the present application. The chip 800 includes a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

In one implementation, the chip 800 may further include a memory 820. The processor 810 may call and run a computer program from the memory 820 to implement the method executed by the terminal device or the network device in the embodiment of the present application.

The memory 820 may be a separate device independent of the processor 810 , or may be integrated into the processor 810 .

In one implementation, the chip 800 may further include an input interface 830. The processor 810 may control the input interface 830 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

In one implementation, the chip 800 may further include an output interface 840. The processor 810 may control the output interface 840 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

In one implementation, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

In one implementation, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

The chips used in the network device and the terminal device may be the same chip or different chips.

It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

The processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC) or other programmable logic devices, transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor mentioned above may be a microprocessor or any conventional processor, etc.

The memory mentioned above may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM) or a flash memory. The volatile memory may be a random access memory (RAM).

It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function in accordance with the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can 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 can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)), etc.

It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (70)

A power indication method, comprising: The first terminal device receives first indication information, where the first indication information indicates power information of a first demodulation reference signal DMRS and/or a first DMRS; The first terminal device sends and/or receives data according to the first indication information. The method according to claim 1, wherein one or more resource elements RE used by the first DMRS are the same as REs used by data. The method according to claim 1 or 2, wherein the first indication information includes a first field, and the first field indicates the first DMRS and/or power information of the first DMRS. The method according to claim 3, wherein when the value of the first domain is a first value, the first domain indicates the power information of the first DMRS and/or the first DMRS. The method according to claim 3 or 4, wherein when the value of the first domain is a second value, the first domain indicates the second DMRS and/or the power information of the second DMRS. The method according to claim 5, wherein When the value of the first domain is the first value, the first DMRS is used for data transmission; When the value of the first domain is the second value, the second DMRS is used for data transmission. The method according to claim 3, wherein the first indication information further includes a second field, and the second field indicates that the data transmission adopts the first DMRS and/or the second DMRS. The method according to claim 7, wherein, when the second field indicates that the first DMRS is used for data transmission, the first field indicates power information of the first DMRS. The method according to claim 7, wherein, when the second field indicates that the data transmission adopts the second DMRS, the first field indicates the power information of the second DMRS. The method according to claim 7, wherein, when the second field indicates that the data transmission adopts the second DMRS, the first field is ignored, or the first field indicates a predetermined value. The method according to claim 7, wherein, when the second field indicates that the first DMRS and the second DMRS are used for data transmission, the first field indicates power information of the first DMRS. The method according to any one of claims 5 to 11, wherein the RE used by the second DMRS is different from the RE used by data. The method according to any one of claims 3 to 12, wherein the first terminal device sends and/or receives data according to the first indication information, comprising: The first terminal device determines the power of the first DMRS according to the power information of the first DMRS; The first terminal device sends and/or receives data according to the power of the first DMRS. The method according to claim 13, wherein the power information of the first DMRS comprises: one or a group of power offset values of the first DMRS. The method according to claim 14, wherein the first terminal device determines the power of the first DMRS according to the power information of the first DMRS, comprising: The first terminal device determines the power of the first DMRS based on the first power and one or a group of power offset values of the first DMRS. The method according to claim 14 or 15 also includes that the first terminal device receives first configuration information, and the first configuration information configures multiple or multiple groups of power offset values; one or a group of power offset values of the first DMRS is one or a group of power offset values among the multiple or multiple groups of power offset values. The method according to claim 15 further includes: the first terminal device receiving second indication information, and the first power is determined based on the second indication information. The method according to claim 17, wherein the second indication information is transmitted via radio resource control RRC signaling and/or media access control unit MAC CE signaling. The method according to claim 15, wherein the first power comprises the power corresponding to the first DMRS during a previous data transmission. The method according to claim 13, wherein the power information of the first DMRS comprises: one or a group of power parameters of the first DMRS. The method according to claim 20, wherein the first terminal device determines the power of the first DMRS according to the power information of the first DMRS, comprising: The first terminal device determines the power of the first DMRS based on one or a group of power parameters of the first DMRS. The method according to claim 20 or 21 also includes that the first terminal device receives third indication information, and the third indication information configures multiple or multiple groups of power parameters; the one or a group of power parameters of the first DMRS is one or a group of power parameters among the multiple or multiple groups of power parameters. The method according to claim 22, wherein the third indication information is transmitted via RRC signaling and/or MAC CE signaling. The method according to any one of claims 1 to 23, wherein the first terminal device receives the first indication information, comprising: The first terminal device receives first indication information sent by the first network device or the second terminal device. A method according to any one of claims 1-24, wherein the first indication information is transmitted via downlink control information DCI signaling and/or MAC CE signaling. According to any one of claims 1 to 25, before the first terminal device receives the first indication information, the method further comprises: The first terminal device sends a first terminal capability, where the first terminal capability indicates that the first terminal device supports the first DMRS. The method according to claim 26, wherein the first terminal capability is transmitted via RRC signaling and/or MAC CE. According to any one of claims 1 to 27, before the first terminal device receives the first indication information, the method further comprises: The first terminal device sends a second terminal capability, and the second terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS through the first indication information. The method according to claim 28, wherein the second terminal capability is transmitted via RRC signaling and/or MAC CE. According to any one of claims 1 to 29, before the first terminal device receives the first indication information, the method further comprises: The first terminal device sends a third terminal capability, and the third terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS and/or the power information of the second DMRS through the first indication information, or the third terminal capability indicates that the first terminal device supports indicating the first DMRS and/or the second DMRS through the first indication information. The method according to claim 30, wherein the third terminal capabilities are transmitted via RRC signaling and/or MAC CE. A power indication method, comprising: The first network device or the second terminal device sends first indication information, where the first indication information indicates the first DMRS and/or power information of the first DMRS. The method of claim 32, wherein one or more REs used by the first DMRS are the same as REs used by data. The method according to claim 32 or 33, wherein the first indication information includes a first field, and the first field indicates the first DMRS and/or power information of the first DMRS. The method according to claim 34, wherein, when the value of the first domain is a first value, the first domain indicates the power information of the first DMRS and/or the first DMRS. The method according to claim 34 or 35, wherein when the value of the first domain is a second value, the first domain indicates a second DMRS and/or power information of the second DMRS. The method according to claim 36, wherein When the value of the first domain is the first value, the first DMRS is used for data transmission; When the value of the first domain is the second value, the second DMRS is used for data transmission. The method according to claim 34, wherein the first indication information further includes a second field, and the second field indicates that the data transmission adopts the first DMRS and/or the second DMRS. The method according to claim 38, wherein, when the second field indicates that the first DMRS is used for data transmission, the first field indicates power information of the first DMRS. The method according to claim 38, wherein, when the second field indicates that the data transmission adopts the second DMRS, the first field indicates the power information of the second DMRS. The method according to claim 38, wherein, when the second field indicates that the second DMRS is used for data transmission, the first field is ignored, or the first field indicates a predetermined value. The method according to claim 38, wherein, when the second field indicates that the first DMRS and the second DMRS are used for data transmission, the first field indicates power information of the first DMRS. The method according to any one of claims 37 to 42, wherein the RE used by the second DMRS is different from the RE used by data. The method according to any one of claims 34-43 also includes the first network device or the second terminal device sending and/or receiving data based on the first DMRS and/or the power information of the first DMRS. The method according to claim 44, wherein the first network device or the second terminal device is based on the first DMRS and and/or power information of the first DMRS, sending and/or receiving data, including: The first network device or the second terminal device determines the power of the first DMRS according to the power information of the first DMRS; The first network device or the second terminal device sends and/or receives data according to the power of the first DMRS. The method according to claim 45, wherein the power information of the first DMRS includes: one or a group of power offset values of the first DMRS. The method according to claim 46, wherein the first network device or the second terminal device determines the power of the first DMRS according to the power information of the first DMRS, comprising: The first network device or the second terminal device determines the power of the first DMRS according to the first power and one or a group of power offset values of the first DMRS. The method according to claim 46 or 47 also includes that the first network device or the second terminal device sends first configuration information, and the first configuration information configures multiple or multiple groups of power offset values; one or a group of power offset values of the first DMRS is one or a group of power offset values among the multiple or multiple groups of power offset values. The method according to claim 47 further includes the first network device or the second terminal device sending second indication information, wherein the second indication information indicates the first power. The method according to claim 49, wherein the second indication information is transmitted via RRC signaling and/or MAC CE signaling. The method according to claim 47, wherein the first power includes the power corresponding to the first DMRS during the previous data transmission. The method according to claim 45, wherein the power information of the first DMRS comprises: one or a group of power parameters of the first DMRS. The method according to claim 52, wherein the first network device or the second terminal device determines the power of the first DMRS according to the power information of the first DMRS, comprising: The first network device or the second terminal device determines the power of the first DMRS according to one or a group of power parameters of the first DMRS. The method according to claim 52 or 53 also includes that the first network device or the second terminal device sends a third indication information, and the third indication information configures multiple or multiple groups of power parameters; the one or a group of power parameters of the first DMRS is one or a group of power parameters among the multiple or multiple groups of power parameters. According to the method according to claim 54, the third indication information is transmitted via RRC signaling and/or MAC CE signaling. A method according to any one of claims 32-55, wherein the first indication information is transmitted via DCI signaling and/or MAC CE signaling. According to any one of claims 32 to 56, before the first network device or the second terminal device sends the first indication information, the method further comprises: The first network device or the second terminal device receives a first terminal capability sent by the first terminal device, where the first terminal capability indicates that the first terminal device supports the first DMRS. The method according to claim 57, wherein the first terminal capability is transmitted via RRC signaling and/or MAC CE. According to any one of claims 32 to 58, before the first network device or the second terminal device sends the first indication information, the method further comprises: The first network device or the second terminal device receives the second terminal capability sent by the first terminal device, where the second terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS through the first indication information. The method according to claim 59, wherein the second terminal capability is transmitted via RRC signaling and/or MAC CE. According to any one of claims 32 to 60, before the first network device or the second terminal device sends the first indication information, the method further comprises: The first network device or the second terminal device receives a third terminal capability sent by the first terminal device, and the third terminal capability indicates that the first terminal device supports indicating the power information of the first DMRS and/or the power information of the second DMRS through the first indication information, or the third terminal capability indicates that the first terminal device supports indicating the first DMRS and/or the second DMRS through the first indication information. A method according to claim 61, wherein the third terminal capabilities are transmitted via RRC signaling and/or MAC CE. A first terminal device includes: The first transceiver module is used to receive first indication information, where the first indication information indicates a first DMRS and/or power information of the first DMRS; and send and/or receive data according to the first indication information. A first network device, comprising: The second transceiver module is used to send first indication information, where the first indication information indicates the first DMRS and/or power information of the first DMRS. A second terminal device, comprising: The third transceiver module is used to send first indication information, where the first indication information indicates the first DMRS and/or power information of the first DMRS. A communication device comprises: a processor, a memory and a transceiver, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory and control the transceiver to execute the method as described in any one of claims 1 to 31 or 32 to 62. A chip comprises: a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes a method as described in any one of claims 1 to 31 or 32 to 62. A computer-readable storage medium for storing a computer program, which, when executed by a device, causes the device to perform a method as claimed in any one of claims 1 to 31 or 32 to 62. A computer program product comprising computer program instructions, the computer program instructions causing a computer to execute the method as claimed in any one of claims 1 to 31 or 32 to 62. A computer program causing a computer to execute the method as claimed in any one of claims 1 to 31 or 32 to 62.