Communication method and communication apparatus

Abstract

A communication method and a communication apparatus. A network device indicates a modulation and coding scheme (MCS) corresponding to a first signal, and there is a correspondence between the MCS of the first signal and a power distribution coefficient of the first signal in a frequency domain. A terminal determines the power distribution coefficient of the first signal in the frequency domain on the basis of the MCS of the first signal, so as to determine powers respectively corresponding to a plurality of frequency domain resource units comprised in the first signal. The powers corresponding to at least two frequency domain resource units among the plurality of frequency domain resource units are different, that is, the first signal has a non-uniform power distribution in the frequency domain, so that the sensing precision and the resolution performance during sensing using the first signal can be improved. The power distribution coefficient of the first signal in the frequency domain is implicitly indicated by indicating the MCS of the first signal, the MCS of the first signal is multiplexed, and the power distribution coefficient of the first signal in the frequency domain does not need to be indicated by using additional signaling, thereby saving on signaling overhead.

Description

Communication method and communication device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on March 22, 2024, with application number 202410340948.5 and application name “Communication Method and Communication Device,” the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and more specifically, to a communication method and a communication device. Background Art

[0003] Integrated sensing and communication (ISAC) technology is considered a key technology for expanding the service capabilities of mobile communication networks. ISAC design requires sensing the target (e.g., measuring the distance to the target). The transmitting device sends a sensing signal, and the receiving device receives an echo signal reflected by the target. The echo signal is then processed to achieve target perception. Of course, this sensing signal can also be used for communication.

[0004] At present, the perception signal adopts a uniform power distribution method in the frequency domain, which has a loss in perception accuracy and resolution performance indicators compared to the optimal performance, reduces the perception accuracy and resolution performance, and thus affects the perception effect. Summary of the Invention

[0005] The present application provides a communication method and a communication device that can improve the perception accuracy and resolution performance when using signals for perception. Therefore, the perception accuracy and resolution performance when using signals for perception can be improved, thereby improving the perception effect of the signal on the perception target.

[0006] In a first aspect, a communication method is provided, and the execution subject of the method can be a terminal device, or a chip, chip system, or processor that supports the terminal device to implement the method. The method includes: receiving indication information, the indication information is used to indicate the modulation coding mode MCS corresponding to the first signal; determining the power allocation coefficient of the first signal in the frequency domain according to the indication information and the correspondence between the MCS and the power allocation coefficient, the power allocation coefficient indicating the power corresponding to at least two frequency domain resource units included in the first signal in the frequency domain, wherein the power corresponding to at least two frequency domain resource units of the at least two frequency domain resource units is different; sending or receiving the first signal according to the power allocation coefficient.

[0007] The communication method provided in the first aspect implicitly indicates the power allocation coefficient of the first signal in the frequency domain by indicating the MCS of the first signal to the terminal device, reuses the MCS of the first signal, and does not need to use additional signaling to indicate the power allocation coefficient of the first signal in the frequency domain, thereby saving signaling overhead, reducing the consumption of communication resources, and improving the utilization rate of communication resources. In addition, the terminal device can determine the power corresponding to the multiple frequency domain resource units included in the first signal in the frequency domain based on the power allocation coefficient of the first signal in the frequency domain, and the power corresponding to at least two of the multiple frequency domain resource units is different, that is, the first signal in the frequency domain is not a frequency domain uniform power allocation method. Since the first signal adopts a frequency domain non-uniform power allocation method in the frequency domain, the perception accuracy and resolution performance when using the first signal for perception can be improved, thereby improving the perception effect of the first signal on the perception target.

[0008] Exemplarily, indication information of the MCS corresponding to the first signal may be carried in downlink control information (DCI) (ie, the DCI carries the indication information, and the indication information indicates the MCS corresponding to the first signal).

[0009] In a second aspect, a communication method is provided, wherein the execution subject of the method may be a network device, or a chip, chip system, or processor that supports the network device to implement the method, or a logical node, logic module, or software that can implement all or part of the network device functions. The method includes: sending indication information, the indication information is used to indicate the modulation and coding scheme (MCS) corresponding to the first signal, the indication information is used to determine the power allocation coefficient of the first signal in the frequency domain, the power allocation coefficient indicates the power corresponding to at least two frequency domain resource units included in the first signal in the frequency domain, wherein the corresponding relationship between the MCS and the power allocation coefficient is that the power corresponding to at least two of the at least two frequency domain resource units is different; and sending or receiving the first signal according to the power allocation coefficient.

[0010] The communication method provided in the second aspect indicates the modulation and coding scheme MCS corresponding to the first signal to the terminal device, so that the terminal device can determine the power allocation coefficient of the first signal in the frequency domain according to the MCS of the first signal, and further determine the power corresponding to the multiple frequency domain resource units included in the first signal. It enables the terminal device to more flexibly select the power allocation method of the first signal in the frequency domain, thereby improving the flexibility and reliability of the power allocation method of the first signal in the frequency domain. The MCS of the first signal is reused, and there is no need to use additional signaling to indicate the power allocation coefficient of the first signal in the frequency domain, which saves signaling overhead, can reduce the consumption of communication resources, and improve the utilization rate of communication resources.

[0011] Exemplarily, the power allocation coefficient of the first signal in the frequency domain may include multiple sets of power allocation coefficients or multiple groups of power allocation coefficients, and each set of power allocation coefficients or each group of power allocation coefficients may include multiple power allocation coefficients. A set of power allocation coefficients or a group of power allocation coefficients may correspond to a power allocation method of the first signal in the frequency domain. In other words, there may be multiple power allocation methods for the first signal in the frequency domain. When the network device indicates the power allocation coefficient of the first signal in the frequency domain to the terminal device, it may select one more set of power allocation coefficients or one more group of power allocation coefficients from the multiple sets of power allocation coefficients or multiple groups of power allocation coefficients and send it to the terminal device, that is, the indication information may indicate a set or a group of power allocation coefficients of the first signal in the frequency domain, or in other words, the indication information may indicate a power allocation method of the first signal in the frequency domain.

[0012] The first signal includes multiple (at least two) frequency domain resource units in the frequency domain, or in other words, the first signal is composed of multiple frequency domain resource units in the frequency domain.

[0013] The first signal may be an uplink signal or a downlink signal.

[0014] In a possible implementation of the first aspect or the second aspect, the correspondence between the MCS and the power allocation coefficient includes at least one of the following correspondences:

[0015] The corresponding relationship between the MCS index and the power allocation coefficient; the corresponding relationship between the MCS modulation order and the power allocation coefficient; the corresponding relationship between the MCS modulation mode and the power allocation coefficient.

[0016] In this implementation, the correspondence between the MCS and the power allocation coefficient is simple and easy to implement, which reduces the requirements on the computing capabilities of the terminal equipment and the network equipment.

[0017] It is exemplary, and the correspondence or mapping relationship between the MCS and the power allocation coefficient can be predefined by the protocol, or can be indicated to the terminal device by the network device through signaling; or, it can also be preconfigured (or configured).

[0018] In a possible implementation of the first aspect or the second aspect, among the at least two frequency domain resource units included in the first signal, the power of the frequency domain resource unit with a frequency in the middle area is greater than the power of the frequency domain resource units with a frequency on both sides. In this implementation, the low false alarm rate of the first signal in the perception process can be guaranteed, or the perception performance of the perception accuracy or resolution and the false alarm rate can be taken into account.

[0019] Alternatively, in at least two frequency domain resource units, the power of the frequency domain resource unit with a frequency in the middle region is 0; in this implementation, high-precision or high-resolution perception performance of the first signal can be guaranteed.

[0020] Alternatively, in at least two frequency domain resource units, the power of the frequency domain resource unit with a frequency in the middle region is less than the power of the frequency domain resource units with frequencies on both sides. In this implementation, both the perceptual performance of the perception accuracy or resolution of the first signal and the communication performance of the spectrum efficiency can be taken into account.

[0021] In a possible implementation manner of the first aspect or the second aspect, the first signal is a signal used for both communication and perception, or the first signal is a signal used for perception.

[0022] In a third aspect, a communication device is provided, comprising: a module (e.g., a processing module and an interface module) for performing each step of the first aspect or any possible implementation of the first aspect. The device may be a terminal device, or a chip, a chip system, or a processor in the terminal device.

[0023] In a fourth aspect, a communication device is provided, comprising at least one processor and memory, wherein the at least one processor is configured to execute the method of the first aspect or any possible implementation of the first aspect. The device may be a terminal device, or a chip, chip system, or processor in the terminal device.

[0024] In a fifth aspect, a communication device is provided, comprising at least one processor and an interface circuit, wherein the at least one processor is configured to execute the method of the first aspect or any possible implementation of the first aspect. The device may be a terminal device, or a chip, chip system, or processor in the terminal device.

[0025] In a sixth aspect, a communication device is provided, comprising: a module (e.g., a processing module and an interface module) for performing each step of the second aspect or any possible implementation of the second aspect. The device may be a network device, a chip, a chip system, or a processor in the network device, or a logical node, a logical module, or software that can implement all or part of the network device functions.

[0026] In a seventh aspect, a communications device is provided, comprising at least one processor and memory, wherein the at least one processor is configured to execute the method of the second aspect or any possible implementation of the second aspect. The device may be a network device, a chip, a chip system, or a processor in a network device, or a logical node, a logical module, or software capable of implementing all or part of the network device's functions.

[0027] In an eighth aspect, a communication device is provided, comprising at least one processor and an interface circuit, wherein the at least one processor is configured to execute the method of the second aspect or any possible implementation of the second aspect. The device may be a network device, a chip, a chip system, or a processor in a network device, or a logical node, a logical module, or software capable of implementing all or part of the network device's functions.

[0028] In the ninth aspect, a terminal device is provided, which includes the communication device provided in the third aspect, or the terminal device includes the communication device provided in the fourth aspect, or the terminal device includes the communication device provided in the fifth aspect.

[0029] In a tenth aspect, a network device is provided, which includes the communication device provided in the sixth aspect, or the network device includes the communication device provided in the seventh aspect, or the network device includes the communication device provided in the eighth aspect.

[0030] In the eleventh aspect, a computer program product is provided, which includes a computer program, which, when executed by a processor, is used to execute: the method in the above first aspect or any possible implementation of the first aspect, or the method in the above second aspect or any possible implementation of the second aspect.

[0031] In the twelfth aspect, a computer-readable storage medium is provided, which stores a computer program. When the computer program is executed, it is used to execute: the method in the above first aspect or any possible implementation of the first aspect, or the method in the above second aspect or any possible implementation of the second aspect.

[0032] In the thirteenth aspect, a chip is provided, which includes: a processor for calling and running a computer program from a memory, so that a communication device equipped with the chip executes: the method in the above first aspect or any possible implementation of the first aspect, or the method in the above second aspect or any possible implementation of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a schematic diagram of an example of uniform power distribution of a sensing signal in the frequency domain.

[0034] FIG2 is a schematic diagram of a communication system provided in an embodiment of the present application and applicable to an embodiment of the present application.

[0035] FIG3 is a schematic diagram of a perception scenario provided in an embodiment of the present application.

[0036] FIG4 is a schematic flowchart of a communication method provided in an embodiment of the present application.

[0037] FIG5 is a schematic flowchart of another communication method provided in an embodiment of the present application.

[0038] FIG6 is a schematic diagram of a frequency domain power allocation result of a first signal provided in an embodiment of the present application.

[0039] FIG7 is a schematic diagram of another example of frequency domain power allocation results of a first signal provided in an embodiment of the present application.

[0040] FIG8 is a schematic diagram of another example of frequency domain power allocation results of a first signal provided in an embodiment of the present application.

[0041] FIG9 is a schematic diagram of another example of frequency domain power allocation results of a first signal provided in an embodiment of the present application.

[0042] Figure 10 is a schematic flowchart of another communication method provided in an embodiment of the present application.

[0043] FIG11 is a schematic flowchart of another communication method provided in an embodiment of the present application.

[0044] FIG12 is a schematic block diagram of a communication device according to an embodiment of the present application.

[0045] FIG13 is a schematic block diagram of another communication device provided in an embodiment of the present application.

[0046] FIG14 is a schematic block diagram of a communication device according to an embodiment of the present application.

[0047] Figure 15 is a schematic block diagram of another communication device provided in an embodiment of the present application.

[0048] Figure 16 is a schematic block diagram of a terminal device provided in an embodiment of the present application.

[0049] Figure 17 is a schematic block diagram of a network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] The technical solution in this application will be described below with reference to the accompanying drawings.

[0051] In the description of the embodiments of this application, unless otherwise specified, " / " represents or. For example, A / B can represent A or B. "And / or" in this article is simply a description of the association relationship between related 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, in the description of the embodiments of this application, "plurality" means two or more than two.

[0052] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this embodiment, unless otherwise specified, "plurality" means two or more.

[0053] In an embodiment of the present application, a terminal device or a network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application. As long as it is possible to communicate according to the method provided in the embodiment of the present application by running a program that records the code of the method provided in the embodiment of the present application, for example, the execution subject of the method provided in the embodiment of the present application can be a terminal device or a network device, or a functional module in the terminal device or the network device that can call a program and execute the program.

[0054] In addition, various aspects or features of the present application can be implemented as methods, devices or products using standard programming and / or engineering techniques. The term "product" as used in this application covers computer programs that can be accessed from any computer-readable device, carrier or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or magnetic tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.

[0055] As fifth-generation (5G) mobile communication systems evolve toward 5G-advanced (5G-A) technology, ISAC is considered a key technology for expanding the service capabilities of mobile communication networks. The core concept of this technology is to add perception capabilities to mobile communication networks, building the ability to detect, track, and image targets. This allows communication and perception capabilities to be integrated into a single network, achieving harmonious coexistence and even mutual benefit.

[0056] The principles of sensing technology differ somewhat from those of communication technology. The principle of communication technology primarily involves the transmitter modulating information onto radio waves and sending them to the receiver, which then demodulates the signal (also known as the communication signal) carried on the radio waves to retrieve the information. However, the principle of sensing technology requires the transmitter to send radio waves (also known as sensing signals) in a specific direction. When these radio waves strike the target surface, they generate reflected waves (also known as echo signals or reflection signals). The receiver then receives and processes the reflected waves to obtain information such as the target's location, speed, and type.

[0057] Sensing can generally be divided into two modes: single-station sensing and dual-station sensing. Single-station sensing is characterized by the fact that the transmitter and receiver of the sensing signal are the same device. In terms of the sensing signal process, the sensing station both transmits the sensing signal and receives the signal reflected from the target surface. Therefore, the single-station sensing mode is also called the self-transmitting, self-receiving mode. In dual-station sensing, the transmitter and receiver of the sensing signal are two different devices. In terms of the sensing signal process, after sensing station A transmits the sensing signal, the signal reflected from the target surface is received by sensing station B. Therefore, the dual-station sensing mode is also called the A-transmitting, B-receiving mode.

[0058] In wireless communication systems, communications can be divided into different types according to the types of sending nodes and receiving nodes. Generally, sending information from a network device to a terminal device is called downlink communication, and sending information from a terminal device to a network device is called uplink communication. In long-term evolution (LTE) / long-term evolution advanced (LTE-A) communication systems and new rat (NR) systems, communications can be mainly divided into frequency division duplex (FDD) mode and time division duplex (TDD) mode according to the different duplex modes. For wireless communication systems operating in TDD mode, the downlink carrier and uplink carrier of the system are carriers of the same carrier frequency. The multiple access method usually adopts orthogonal frequency division multiplexing access (OFDMA). The main feature of OFDMA is that it divides transmission resources into mutually orthogonal time-frequency resource elements (REs). The signals sent by the transmitter are all carried on the REs and transmitted to the receiver. Because different REs are orthogonal to each other, the receiver can receive the signal sent on each RE separately.

[0059] Currently, perception signals use a uniform power allocation scheme in the frequency domain. For example, as shown in Figure 1, each horizontal bar (rectangle) in the x-axis represents a different resource unit in the frequency domain. The length of the horizontal bar represents the power allocated to each resource unit, and the sum of the vertical widths of all bars in the y-axis represents the frequency domain resources occupied or corresponding to the perception signal. In other words, the frequency domain resources occupied or corresponding to the perception signal in the frequency domain are composed of multiple frequency domain resource units. As can be seen from Figure 1, the horizontal length of each frequency domain resource unit is equal, that is, the power allocated to each frequency domain resource unit is equal.

[0060] The perception signal adopts a frequency domain uniform power distribution method, which has a loss in perception accuracy and resolution performance indicators compared to the optimal performance, reduces the perception accuracy and resolution performance, and thus affects the perception effect.

[0061] In view of this, the present application provides a communication method and a communication device, in which a network device can notify a terminal device of the frequency domain power allocation coefficient of a signal through indication information. The signal includes multiple frequency domain resource units in the frequency domain, and the frequency domain power allocation coefficient is used to determine the power corresponding to each frequency domain resource unit. Among them, the power corresponding to at least two frequency domain resource units is different. The network device or the terminal device can determine the power corresponding to each frequency domain resource unit through the frequency domain power allocation coefficient of the signal. Since the power corresponding to at least two frequency domain resource units is different, the perception accuracy and resolution performance can be improved, thereby improving the perception effect of the perception signal on the perception target.

[0062] It should be understood that the aforementioned "signal" can be a signal used for perception, i.e., a perception signal; or, it can be a signal used for both communication and perception. In other words, in the embodiments of the present application, the "signal" in "the network device notifies the terminal device of the frequency domain power allocation coefficient of the signal via indication information" can be a perception signal, or, it can be a signal used for both communication and perception.

[0063] To facilitate understanding of the embodiments of the present application, a communication system applicable to the embodiments of the present application is first briefly introduced with reference to FIG2 and FIG3.

[0064] Exemplarily, the communication method provided by the present application can be applied in a scenario or communication system of integrated communication and perception. For example, FIG2 shows a schematic diagram of an example of an integrated communication and perception communication system (or it can also be called an integrated communication scenario and perception scenario). As shown in FIG2 , the system includes: a network device, a plurality of terminal devices, and a plurality of targets to be sensed or perceived targets. While the network devices and terminal devices in the communication system are performing wireless communications, they can also perceive objects that do not have communication functions (i.e., targets to be sensed or targets to be sensed). Exemplarily, the targets to be sensed may include mobile targets such as vehicles, low-altitude drones, pedestrians, and of course, stationary objects in the environment, such as buildings, ground, etc. The embodiments of the present application do not limit the specific form of the targets to be sensed.

[0065] For example, FIG3 shows a schematic diagram of a sensing scenario, illustrating different sensing modes. FIG3a illustrates a single-station sensing mode in which a network device utilizes sensing signals, i.e., a self-transmitting and self-receiving mode for the network device. FIG3b illustrates a single-station sensing mode in which a terminal device utilizes sensing signals, i.e., a self-transmitting and self-receiving mode for the terminal device. FIG3c illustrates a dual-station sensing mode in which sensing signals are utilized between different network devices (network device A and network device B), i.e., a mode in which network device A transmits and network device B receives. FIG3d illustrates a single-station sensing mode in which sensing signals are utilized between different terminal devices (terminal device A and terminal device B), i.e., a mode in which terminal device A transmits and terminal device B receives. FIG3e illustrates a dual-station sensing mode between a network device and a terminal device. After the network device transmits a sensing signal, the terminal device receives the reflected signal from the sensing target surface. FIG3f illustrates a dual-station sensing mode between a terminal device and a network device. After the terminal device transmits a sensing signal, the network device receives the reflected signal from the sensing target surface.

[0066] It should be understood that the perception scenarios in the communication system shown in FIG. 2 may include one or more of those shown in FIG. 3 .

[0067] Exemplarily, the scenario or communication system shown in Figure 2 can be a cellular system related to the Third Generation Partnership Project (3GPP), for example, an LTE system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), a Universal Mobile Telecommunication System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a 4G, 5G mobile communication system, a New Radio (NR), a future-oriented evolution system (such as a 6G mobile communication system), a cloud radio access network (CRAN), or an open access network (open RAN, O-RAN or ORAN) system, or a communication system that integrates two or more of the above systems. The embodiments of the present application are not limited here.

[0068] In the embodiments of the present application, the network device may sometimes also be referred to as an access network device, a radio access network (RAN) node, a network device, a RAN entity or an access node, etc., which constitutes a part of the communication system to help the terminal achieve wireless access.

[0069] In one possible scenario, a network device can be any device with wireless transceiver capabilities. Examples include: traditional macro base stations (evolved node B, eNBs) in traditional Universal Mobile Telecommunications Systems (UMTS) and LTE communication systems; micro base stations (eNBs) in heterogeneous networks (HetNets); baseband processing units (BBUs) and remote radio units (RRUs) in distributed base station scenarios; baseband pool (BBU pool) RRUs in cloud radio access networks (CRANs); gNBs in future wireless communication systems, 3GPP-derived base stations, access nodes in WiFi systems, wireless relay nodes, wireless backhaul nodes, etc. For example, a base station can be: a macro base station, a micro base station, a pico base station, a small cell, a relay station, or a balloon station.

[0070] In another possible scenario, the network device may be a base station, an evolved NodeB (eNodeB), an access point (AP), a TRP, a next-generation base station in a sixth-generation (6G) mobile communication system, a base station in a future mobile communication system, etc. Optionally, the network device may also be a relay node or a host node, or a wireless controller in a CRAN scenario. Optionally, the network device may also be an access network device in V2X technology, such as a road side unit (RSU). All or part of the functions of the network device in this application may also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform). The network device in this application may also be a logical node, logical module or software that can implement all or part of the functions of a wireless access network device.

[0071] In NR technology, a network device (e.g., gNB) can consist of a gNB Centralized Unit (CU) and one or more gNB Distributed Units (DU). The gNB-CU and gNB-DU are different logical nodes and can be deployed on different physical devices or on the same physical device.

[0072] The CU and DU can be configured according to the protocol layer functions of the wireless network they implement: for example, the CU is configured to implement the functions of the packet data convergence protocol (PDCP) layer and the protocol layers above it (such as the radio resource control (RRC) layer and / or the service data adaptation protocol (SDAP) layer, etc.); the DU is configured to implement the functions of the protocol layers below the PDCP layer (such as the radio link control (RLC) layer, the media access control (MAC) layer, and / or the physical (PHY) layer, etc.). For another example, the CU is configured to implement the functions of the protocol layers above the PDCP layer (such as the RRC layer and / or the SDAP layer), and the DU is configured to implement the functions of the PDCP layer and the protocol layers below it (such as the RLC layer, the MAC layer, and / or the PHY layer, etc.).

[0073] Considering a separate control plane and user plane architecture, the gNB-CU can be further divided into a Central Unit-Control Plane (CU-CP) entity (also known as a CU-CP node) and a Central Unit-User Plane (CU-UP) entity (also known as a CU-UP node). The gNB-CU-CP is a control plane entity responsible for signaling control, while the gNB-CU-UP is a user plane entity responsible for terminating terminal data. The gNB-CU-CP and gNB-CU-UP are connected via the E1 interface, the gNB-CU-CP and gNB-DU are connected via the F1-C interface, and the gNB-CU-UP and gNB-DU are connected via the F1-U interface.

[0074] In one possible scenario, for example, the network device may be the aforementioned CU, DU, CU-CP, or CU-UP. The CU and DU may be configured separately or included in the same network element, such as a BBU. The RU may be included in a radio frequency device or radio frequency unit, such as an RRU, an active antenna unit (AAU), or a remote radio head (RRH).

[0075] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0076] In the embodiments of the present application, the terminal device may also be referred to as a terminal, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely used in various scenarios, for example, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, drone, helicopter, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of the present application do not limit the device form of the terminal.

[0077] It should be understood that the communication systems shown in Figures 2 and 3 are merely exemplary and should not impose any limitations on the communication systems applicable to the embodiments of the present application. For example, the communication system shown in Figure 2 may also include more or fewer network nodes, such as terminal devices or targets to be sensed, and the network devices or terminal devices included in the communication system shown in Figure 2 may be the various forms of network devices or terminal devices described above. The embodiments of the present application are not shown one by one in the figures.

[0078] The following describes the communication method provided by this application with reference to specific examples.

[0079] It should be understood that in the embodiments of the present application, the method is described by taking a network device and a terminal device as the execution subjects of the method as an example. As an example and not a limitation, the terminal device in the present application may also be a chip, a chip system, or a processor that supports the terminal device to implement the method. The network device in the present application may also be a chip, a chip system, or a processor that supports the network device to implement the method, or may also be a logical node, a logical module, or software that can implement all or part of the network device functions. The embodiments of the present application are not limited here.

[0080] The method provided in the present application is described in detail below in conjunction with Figure 4. Figure 4 is a schematic flowchart of a communication method of an embodiment of the present application. This method 400 can be applied to the scenarios or communication architectures shown in Figure 2 or Figure 3, and of course can also be applied to other communication scenarios or communication architectures. The embodiments of the present application are not limited here.

[0081] As shown in Fig. 4 , the method 400 shown in Fig. 4 may include S410 to S420. Each step in the method 400 will be described in detail below with reference to Fig. 4 .

[0082] S410, the network device sends indication information to the terminal device, where the indication information indicates a power allocation coefficient of a first signal in the frequency domain, the first signal includes multiple frequency domain resource units in the frequency domain, the first signal is a perception signal used for perception, or the first signal is a signal used for both perception and communication.

[0083] Correspondingly, the terminal device receives the indication information.

[0084] It should be understood that in the embodiment of the present application, the first signal may be a perception signal used for perception, or the first signal may also be a signal used for both perception and communication, and the embodiment of the present application does not limit this.

[0085] It can be understood that the first signal includes multiple (at least two) frequency domain resource units in the frequency domain, or in other words, the first signal is composed of multiple frequency domain resource units in the frequency domain. For example, as shown in Figure 1, the first signal is composed of 6 frequency domain resource units in the frequency domain, or in other words, the frequency domain resources occupied or corresponding to the first signal in the frequency domain are composed of 6 frequency domain resource units.

[0086] Optionally, as a possible implementation, the frequency widths or frequency sizes occupied by the multiple frequency domain resource units included in the first signal in the frequency domain may be the same. For example, each frequency domain resource unit may be a subcarrier, or may be a resource block composed of multiple subcarriers. In the embodiment of the present application, there is no prior restriction on the size of each frequency domain resource unit.

[0087] Optionally, as another possible implementation, among the multiple frequency domain resource units, at least two frequency domain resource units may have different frequency widths or frequency sizes in the frequency domain. In other words, among the multiple frequency domain resource units, some or all of the frequency domain resource units may have different sizes, or in other words, different frequency domain resource units may have different sizes.

[0088] S420, the terminal device determines the powers corresponding to the multiple frequency domain resource units included in the first signal in the frequency domain according to the indication information, wherein the powers corresponding to at least two frequency domain resource units among the multiple frequency domain resource units are different.

[0089] It should be understood that in the embodiment of the present application, the indication information can be used to determine the power corresponding to each of the multiple frequency domain resource units included in the first signal in the frequency domain. For example, the indication information can indicate the power allocation coefficient of the first signal in the frequency domain, and the power allocation coefficient of the first signal in the frequency domain can be used to determine the power corresponding to each of the multiple frequency domain resource units included in the first signal in the frequency domain. In other words, the power allocation coefficient of the first signal in the frequency domain indicates the power corresponding to at least two frequency domain resource units included in the first signal in the frequency domain.

[0090] Of course, in other implementations of the present application, the indication information may also indicate other content or parameters. As long as the terminal device can determine the powers corresponding to the multiple frequency domain resource units included in the first signal in the frequency domain according to the indication information, or determine the power allocation coefficient of the first signal in the frequency domain, the specific content indicated by the indication information is not limited in the embodiments of the present application.

[0091] It should be understood that the power allocation coefficient of the first signal in the frequency domain may include multiple sets of power allocation coefficients or multiple groups of power allocation coefficients, and each set of power allocation coefficients or each group of power allocation coefficients may include multiple power allocation coefficients. A set of power allocation coefficients or a group of power allocation coefficients may correspond to a power allocation method of the first signal in the frequency domain. In other words, there may be multiple power allocation methods for the first signal in the frequency domain. When the network device indicates the power allocation coefficient of the first signal in the frequency domain to the terminal device, it may select one more set of power allocation coefficients or one more group of power allocation coefficients from the multiple sets of power allocation coefficients or multiple groups of power allocation coefficients and send it to the terminal device, that is, the indication information may indicate a set or a group of power allocation coefficients of the first signal in the frequency domain, or in other words, the indication information may indicate a power allocation method of the first signal in the frequency domain.

[0092] Exemplarily, the number of coefficients included in the set of power allocation coefficients or a group of power allocation coefficients indicated by the indication information may be the same as the number of frequency domain resource units included in the first signal in the frequency domain. For example, assuming that the first signal includes N frequency domain resource units in the frequency domain, the set of power allocation coefficients or a group of power allocation coefficients indicated by the indication information includes N power allocation coefficients, where N is a positive integer.

[0093] It should be understood that, among the powers corresponding to the multiple frequency domain resource units included in the first signal in the frequency domain, determined by the terminal device based on the power allocation coefficient of the first signal in the frequency domain, the powers corresponding to some or all of the frequency domain resource units are different, or, among the powers corresponding to the multiple frequency domain resource units included in the first signal in the frequency domain, the powers corresponding to at least two of the frequency domain resource units are different. In other words, the power allocation mode of the first signal in the frequency domain is not frequency-uniform.

[0094] In the communication method provided by the present application, a terminal device can determine the powers corresponding to the multiple frequency domain resource units included in the first signal in the frequency domain based on the power allocation coefficient of the first signal in the frequency domain, and the powers corresponding to at least two of the multiple frequency domain resource units are different, that is, the first signal does not use a frequency domain uniform power allocation method in the frequency domain. Because the first signal uses a frequency domain non-uniform power allocation method in the frequency domain, the perception accuracy and resolution performance when using the first signal for perception can be improved, thereby improving the perception effect of the first signal on the perception target.

[0095] It can be understood that in an embodiment of the present application, method 400 can be executed multiple times, for example, once at time T and once at time T+1. During these two executions of method 400, the power allocation coefficient (power allocation method) of the first signal indicated by the indication information in the frequency domain can be different or the same.

[0096] In addition, by indicating the power allocation coefficient of the first signal in the frequency domain to the terminal device through the network device, the network device can indicate different power allocation coefficients of the first signal to the terminal device multiple times according to the actual channel or perception situation, which enables the network device and the terminal device to more flexibly select the power allocation method of the first signal in the frequency domain, improves the flexibility and reliability of the power allocation method of the first signal in the frequency domain, and further improves the perception effect of the first signal on the perception target.

[0097] After the terminal device determines the power allocation coefficient or method of the first signal in the frequency domain, the terminal device can send the first signal to the network device or receive the first signal sent by the network device according to the power allocation coefficient or power allocation method of the first signal in the frequency domain. Of course, the network device can also send the first signal to the terminal device or receive the first signal sent by the terminal device according to the power allocation coefficient or power allocation method of the first signal in the frequency domain. In other words, the first signal can be an uplink signal or a downlink signal. This is not limited in the embodiments of the present application.

[0098] In some possible implementations, in a scenario where the first signal is used for both communication and perception, different power allocation coefficients of the first signal in the frequency domain (i.e., different power allocation modes) have different effects on communication performance, especially for signals using different modulation and coding schemes (MCS), the same power allocation coefficient has different effects on the modulation and coding schemes. Therefore, the network device can determine the power allocation coefficient (power allocation mode) of the first signal in the frequency domain based on the MCS of the first signal, that is, there is a correspondence or mapping relationship between the MCS corresponding to the first signal and the power allocation coefficient of the first signal in the frequency domain, and the network device can implicitly indicate the power allocation coefficient by indicating the MCS to the terminal device.

[0099] In other words, as a possible implementation, the indication information in S410 may indicate the MCS corresponding to the first signal, and the MCS corresponding to (or used by) the first signal may have a corresponding relationship or mapping relationship with the power allocation coefficient (power allocation method) of the first signal in the frequency domain. The terminal device and the network device can then determine the power allocation coefficient or power allocation method of the first signal in the frequency domain based on the MCS corresponding to the first signal.

[0100] For example, Figure 5 is a schematic flowchart of a communication method of another embodiment of the present application. As shown in Figure 5, the method 500 shown in Figure 5 may include S510 to S530. The various steps in the method 500 are described in detail below in conjunction with Figure 5.

[0101] S510, the network device sends indication information to the terminal device, where the indication information indicates the MCS corresponding to the first signal, and the first signal includes multiple frequency domain resource units in the frequency domain.

[0102] Correspondingly, the terminal device receives the indication information.

[0103] S520, the terminal device determines the power allocation coefficient of the first signal in the frequency domain according to the MCS corresponding to the first signal, and the correspondence or mapping relationship between the MCS corresponding to the first signal and the power allocation coefficient of the first signal in the frequency domain.

[0104] After the terminal device determines the power allocation coefficient of the first signal in the frequency domain, since the power allocation coefficient of the first signal in the frequency domain indicates or is used to determine the powers corresponding to at least two frequency domain resource units included in the first signal in the frequency domain, the terminal device can determine the powers corresponding to the multiple frequency domain resource units included in the first signal in the frequency domain according to the power allocation coefficient of the first signal in the frequency domain, wherein the powers corresponding to at least two of the multiple frequency domain resource units included in the first signal in the frequency domain are different, and there is a corresponding relationship or mapping relationship between the MCS corresponding to the first signal and the power allocation coefficient of the first signal in the frequency domain.

[0105] Optionally, the method 500 may further include S530:

[0106] S530, the terminal device receives or sends the first signal according to the power allocation coefficient of the first signal in the frequency domain and the MCS corresponding to the first signal.

[0107] In the method provided in the embodiments of the present application, since the MCS of the first signal can affect the communication performance of the first signal, determining the power allocation coefficient of the first signal in the frequency domain based on the MCS of the first signal can ensure the communication performance of the first signal. In other words, while improving the perception accuracy and resolution performance when using the first signal for perception, communication performance can also be improved.

[0108] Moreover, by indicating the MCS of the first signal to the terminal device to implicitly indicate the power allocation coefficient of the first signal in the frequency domain (i.e., indicating a set of power allocation coefficients of the first signal in the frequency domain), the MCS of the first signal is reused, and there is no need to use additional signaling to indicate the power allocation coefficient of the first signal in the frequency domain, thereby saving signaling overhead, reducing the consumption of communication resources, and improving the utilization of communication resources.

[0109] Exemplarily, the network device may carry indication information of the MCS corresponding to the first signal in downlink control information (DCI) (i.e., the DCI carries the indication information, and the indication information indicates the MCS corresponding to the first signal). For example, the indication information may be an MCS index corresponding to the first signal.

[0110] The following examples illustrate the correspondence or mapping relationship between the MCS corresponding to the first signal and the power allocation coefficient of the first signal in the frequency domain, that is, the correspondence or mapping relationship between the MCS corresponding to the first signal and multiple groups of allocation coefficients of the first signal in the frequency domain.

[0111] It should be understood that the correspondence or mapping relationship between the MCS corresponding to the first signal and the power allocation coefficient of the first signal in the frequency domain can be predefined by the protocol, or can be indicated to the terminal device by the network device through signaling; or can be preconfigured (or configured). The embodiments of the present application are not limited here.

[0112] Illustratively, Table 1 shows an example of an MCS table corresponding to the first signal.

[0113] Table 1

[0114] As shown in Table 1, the modulation orders included in the MCS index table include 2, 4, 6, and 8. Among them, the modulation mode corresponding to the modulation order 2 is quadrature phase shift keying (QPSK), the modulation mode corresponding to the modulation order 4 is 16 quadrature amplitude modulation (16QAM), the modulation mode corresponding to the modulation order 6 is 64 quadrature amplitude modulation (64QAM), and the modulation mode corresponding to the modulation order 8 is 256 quadrature amplitude modulation (256QAM).

[0115] It should be understood that the MCS index table may also include some rows, rather than all rows, in Table 1. In other words, in the embodiment of the present application, the specific content included in the MCS table corresponding to the first signal may be all or part of Table 1.

[0116] It should also be understood that Table 1 is merely exemplary and should not impose any limitations on the MCS index table in the embodiments of the present application. In other embodiments of the present application, the MCS index table may also be other MCS index tables or include more MCS index tables, which is not limited in the embodiments of the present application.

[0117] Exemplarily, in combination with the example shown in Table 1, the correspondence or mapping relationship between the MCS corresponding to the first signal and multiple groups of power allocation coefficients of the first signal in the frequency domain may be as shown in Table 2 or Table 3.

[0118] Table 2 Correspondence between MCS and power allocation coefficient

[0119] Table 2 shows an example of the relationship between the MCS and power allocation coefficients of the first signal. The modulation scheme in the MCS of the first signal is bound to the power allocation coefficient of the first signal in the frequency domain. QPSK, 16QAM, 64QAM, and 256QAM each correspond to different sets of power allocation coefficients. Each set of power allocation coefficients includes multiple coefficients, and a set of power allocation coefficients corresponds to a power allocation scheme for the first signal in the frequency domain.

[0120] Since there is a corresponding relationship between the modulation order and the modulation mode, it can also be considered that what is shown in Table 2 is the corresponding relationship between the modulation order in the MCS of the first signal and the power allocation coefficient of the first signal in the frequency domain.

[0121] For example, in S510, the indication information sent by the network device to the terminal device indicates that the modulation mode of the MCS of the first signal is 16QAM, or indicates that the modulation order of the MCS of the first signal is 4. After receiving the indication information, the terminal device can determine that the power allocation coefficient of the first signal in the frequency domain is a second set of power allocation coefficients based on the correspondence between the modulation order or modulation mode of the MCS of the first signal and the power allocation coefficient of the first signal in the frequency domain. Based on the second set of power allocation coefficients, the powers corresponding to the multiple frequency domain resource units included in the first signal in the frequency domain can be determined, so that the first signal can be correctly received or sent.

[0122] It should also be understood that the values ​​of the power allocation coefficients included in each set of power allocation coefficients may be predefined by a protocol, or may be indicated to the terminal device by a network device via signaling; or may be preconfigured (or configured). This embodiment of the present application is not limited thereto.

[0123] Table 3 Correspondence between MCS and power allocation coefficient

[0124] Table 3 shows another example of the correspondence between the MCS and power allocation coefficients of a first signal. The index of the MCS of the first signal is bound to the power allocation coefficient of the first signal in the frequency domain. That is, the power allocation coefficient of the first signal in the frequency domain is related to both the modulation mode and the coding rate of the MCS of the first signal. Among them, MCS index values ​​0-6 correspond to the first group of power allocation coefficients, MCS index values ​​7-15 correspond to the second group of power allocation coefficients, MCS index values ​​16-23 correspond to the third group of power allocation coefficients, and MCS index values ​​24-27 correspond to the fourth group of power allocation coefficients.

[0125] For example, in S510, the indication information sent by the network device to the terminal device may indicate the value of the index of the MCS of the first signal. After receiving the indication information, the terminal device can determine which set of power allocation coefficients the first signal's power allocation coefficients in the frequency domain belong to based on the correspondence between the index of the MCS of the first signal and the power allocation coefficient of the first signal in the frequency domain. Thereafter, based on the power allocation coefficient of the first signal in the frequency domain, the power corresponding to each of the multiple frequency domain resource units included in the first signal in the frequency domain can be determined, thereby correctly receiving or sending the first signal.

[0126] It should be understood that Tables 2 and 3 are merely exemplary and should not impose any limitations on the correspondence between the MCS and the power allocation coefficient in the embodiments of the present application. In other implementations of the present application, the correspondence between the MCS and the power allocation coefficient may also be other correspondences or mappings. For example, the correspondence between the value of the MCS index or the modulation mode or modulation order of the MCS and the power allocation coefficients of different groups may also be other correspondences, and the first signal may also correspond to more groups of power allocation coefficients or more power allocation modes. The embodiments of the present application are not limited here.

[0127] The following examples illustrate several possible power allocation coefficients or power allocation methods of the first signal in the frequency domain, where one power allocation method corresponds to a set of power allocation coefficients, that is, the network device can indicate any one of these power allocation coefficients or power allocation methods to the terminal device through indication information.

[0128] Regarding perception performance, the main indicators include accuracy, resolution, and false alarm rate.

[0129] Accuracy represents the deviation between the perceived target or environment and the actual result. For example, in distance perception, if the perceived distance between the target and the sensing device is 6 meters, but the actual distance is 5 meters, the perception error is 1 meter, which is also called an accuracy of 1 meter.

[0130] Resolution represents the ability to distinguish between two different targets. For example, in distance perception, a distance resolution of 1m should be understood as the ability of the sensing device to distinguish two targets when the distance between the two targets is greater than or equal to 1m; when the distance between the two targets is less than 1m, the sensing device cannot distinguish the two targets.

[0131] The false alarm rate represents the performance of incorrectly judging false targets under target-free conditions. The lower the false alarm rate, the higher the perception performance.

[0132] Regarding communication performance, it mainly includes spectrum efficiency and coverage indicators.

[0133] Among them, spectrum efficiency represents the efficiency of communication in utilizing spectrum, and coverage index represents the efficiency of communication in utilizing power.

[0134] According to the above-mentioned perception performance and communication performance, illustratively, the first signal may have the following six power allocation coefficients (six groups of power allocation coefficients) or six power allocation methods in the frequency domain.

[0135] Power distribution method 1: high-precision or high-resolution power distribution method.

[0136] Under this power allocation method, the frequency domain power allocation result of the first signal is generally to give priority to allocating power to the resource units on both sides of the first signal in the frequency domain until the power allocation is completed. For example, FIG6 is a schematic diagram of the frequency domain power allocation result of the first signal. As shown in FIG6, the first signal is composed of 6 frequency domain resource units in the frequency domain, which are arranged in order from low to high in the frequency domain as frequency domain resource unit 1 (frequency domain resource unit No. 1) to frequency domain resource unit 6 (frequency domain resource unit No. 6). The power of the first signal is preferentially allocated to the frequency domain resource unit No. 1 and the frequency domain resource unit No. 2 with lower frequencies, and the frequency domain resource unit No. 5 and the frequency domain resource unit No. 6 with higher frequencies, while no power is allocated to the middle frequency domain resource unit No. 3 and the frequency domain resource unit No. 4. This power allocation method can maximize the perception accuracy or resolution performance of the signal.

[0137] Of course, the powers allocated to frequency domain resource unit No. 1, frequency domain resource unit No. 2, frequency domain resource unit No. 5, and frequency domain resource unit No. 6 may be the same, or may be partially or completely different.

[0138] Power allocation method 2: Power allocation method with low false alarm rate.

[0139] Under this power allocation method, the frequency domain power allocation result of the first signal is usually that the power allocated to the resource unit with a frequency in the middle area is higher than the power of the resource units with a frequency on both sides. For example, FIG7 is a schematic diagram of another example of the frequency domain power allocation result of the first signal. As shown in FIG7 , the first signal is composed of 6 frequency domain resource units in the frequency domain, which are arranged in order from low to high in the frequency domain, namely, frequency domain resource unit 1 to frequency domain resource unit 6. The power allocated to the middle frequency domain resource unit No. 3 and frequency domain resource unit No. 4 is higher than the power allocated to the frequency domain resource unit No. 1 and frequency domain resource unit No. 2, which are located on both sides, as well as the frequency domain resource unit No. 5 and frequency domain resource unit No. 6. The use of this power allocation method can minimize the false alarm rate caused by the use of signals for perception.

[0140] Of course, the power allocated to frequency domain resource unit 3 and frequency domain resource unit 4 can be the same or different. The power allocated to frequency domain resource unit 1, frequency domain resource unit 2, frequency domain resource unit 5, and frequency domain resource unit 6 can be the same or partially or completely different.

[0141] It should be understood that in an embodiment of the present application, since the first signal includes multiple frequency domain resource units in the frequency domain, the frequencies corresponding to the multiple frequency domain resource units are different, and the multiple frequency domain resource units include: resource units with frequencies in the middle area and resource units with frequencies in the side areas.

[0142] For example, resource units with frequencies in the middle region can be understood as: one or more frequency domain resource units corresponding to (including) a frequency range that is greater than the frequency domain resource unit with the smallest frequency and smaller than the frequency domain resource unit with the largest frequency among multiple frequency domain resource units. Resource units with frequencies in the side regions can be understood as: one or more frequency domain resource units with the smallest or smaller frequency and one or more frequency domain resource units with the largest or larger frequency among multiple frequency domain resource units.

[0143] For another example, the resource units with frequencies in the middle region can also be understood as: in the frequency range corresponding to the first signal, one or more frequency domain resource units corresponding to (including) frequencies greater than or equal to the first threshold and frequencies less than or equal to the second threshold. The resource units with frequencies in the side regions can be understood as: one or more frequency domain resource units corresponding to frequencies less than the first threshold and frequencies greater than the second threshold. The second threshold is greater than the first threshold.

[0144] Exemplarily, it is assumed that the first signal includes N frequency domain resource units in the frequency domain, which are arranged in order from low to high in the frequency domain as frequency domain resource unit No. 1 to frequency domain resource unit No. N. If N is an odd number, the resource units with frequencies in the middle region may include: frequency domain resource unit No. (N+1) / 2. Optionally, the resource units with frequencies in the middle region may also include: one or more frequency domain resource units with frequencies smaller than and adjacent to frequency domain resource unit No. (N+1) / 2, and one or more frequency domain resource units with frequencies larger than and adjacent to frequency domain resource unit No. (N+1) / 2. In addition to these resource units with frequencies in the middle region, the rest can be understood as resource units with frequencies in the regions on both sides.

[0145] For another example, assume that the first signal includes N frequency domain resource units in the frequency domain, which are arranged in order from low to high in the frequency domain as frequency domain resource unit No. 1 to frequency domain resource unit No. N. If N is an even number, the resource units with frequencies in the middle region may include: frequency domain resource units No. N / 2 and No. N / 2+1. Optionally, the resource units with frequencies in the middle region may also include: one or more frequency domain resource units with a frequency domain smaller than and adjacent to frequency domain resource unit No. N / 2, and one or more frequency domain resource units with a frequency domain larger than and adjacent to frequency domain resource unit No. N / 2+1. The rest can be understood as resource units with frequencies in the two side regions.

[0146] Power distribution method three: high spectral efficiency power distribution method.

[0147] In this power allocation method, the frequency power allocation result of the first signal is generally related to the channel quality experienced by the frequency domain resource units included in the first signal. More power will be allocated to frequency domain resource units with good channel quality, while less or no power will be allocated to frequency domain resource units with poor channel quality, so that the power of different resource units can be different. For example, FIG7 shows a schematic diagram of the frequency domain power allocation result of a first signal, as shown in FIG8 . The first signal is composed of 6 frequency domain resource units in the frequency domain, and the power corresponding to frequency domain resource units 1 to 6 is different.

[0148] Power allocation method 4: a power allocation method that compromises accuracy or resolution and false alarm rate (a power allocation method that takes both accuracy or resolution and false alarm rate into consideration).

[0149] Under this power allocation method, the frequency domain power allocation result of the first signal is usually that the resource units with frequencies in the middle area are allocated higher power than the resource units with frequencies on both sides, which is similar to power allocation method 2 or the allocation method shown in Figure 7, but the specific power value of each frequency domain resource unit is different from power allocation method 2.

[0150] Power allocation method 5: A power allocation method that compromises accuracy or resolution with spectrum efficiency.

[0151] Under this power allocation method, the frequency allocation result of the first signal is usually that the power of the resource units on both sides of the frequency is higher than the power of the resource units in the middle area. For example, FIG9 is a schematic diagram of the frequency domain power allocation result of the first signal. As shown in FIG9, the first signal is composed of 6 frequency domain resource units in the frequency domain, which are arranged in order from low to high in the frequency domain as frequency domain resource unit 1 to frequency domain resource unit 6. For frequency domain resource unit No. 1 and frequency domain resource unit No. 2, which are located on both sides of the frequency, as well as frequency domain resource unit No. 5 and frequency domain resource unit No. 6, the power allocated to them is higher than the power allocated to frequency domain resource unit No. 3 and frequency domain resource unit No. 4 in the middle. This power allocation method can achieve the optimal compromise between precision or resolution and spectrum efficiency, that is, a power allocation method that takes into account both precision or resolution and spectrum efficiency.

[0152] Of course, the power allocated to frequency domain resource unit 3 and frequency domain resource unit 4 can be the same or different. The power allocated to frequency domain resource unit 1, frequency domain resource unit 2, frequency domain resource unit 5, and frequency domain resource unit 6 can be the same or partially or completely different.

[0153] Power allocation method six: a power allocation method that compromises accuracy or resolution, false alarm rate, and spectrum efficiency.

[0154] Under this power allocation method, the frequency allocation result of the first signal is usually that the power of the resource units with frequencies on both sides is higher than the power of the resource units with frequencies in the middle area, which is similar to power allocation method five or the allocation method shown in Figure 9, but the specific power value of each frequency domain resource unit is different from power allocation method five.

[0155] It should be understood that the above-mentioned six power distribution methods (six groups of power distribution coefficients or six power distribution coefficients) are merely exemplary and should not impose any restrictions on the embodiments of the present application. In other implementation methods of the present application, there may be more other power distribution methods for the first signal in the frequency domain, and the embodiments of the present application do not impose any restrictions here.

[0156] The method provided in this application is described below with reference to specific examples.

[0157] FIG10 is a schematic flow chart of another example of a communication method provided by the present application. In the example shown in FIG10 , a downlink signal is used as an example, that is, a network device sends a first signal to a terminal device. As shown in FIG10 , the method 1000 includes:

[0158] S1010, the network device sends indication information to the terminal device, where the indication information indicates the MCS of the first signal.

[0159] For example, the first signal includes multiple frequency domain resource units in the frequency domain, and the first signal is a perception signal used for perception, or the first signal is a signal used for both perception and communication.

[0160] For another example, the indication information may indicate the index of the MCS of the first signal, the modulation order or modulation mode of the MCS of the first signal, etc.

[0161] Exemplarily, the network device may send DCI to the terminal device, and the DCI may carry the indication information.

[0162] Correspondingly, the terminal device receives the indication information.

[0163] S1020: The terminal device determines the power allocation coefficient of the first signal in the frequency domain according to the correspondence between the MCS of the first signal and the power allocation coefficient of the first signal in the frequency domain.

[0164] Due to the correspondence or mapping relationship between the MCS corresponding to the first signal and the power allocation coefficient of the first signal in the frequency domain, such as shown in Table 2 and Table 3. Therefore, the terminal device can determine the power allocation coefficient of the first signal in the frequency domain based on the MCS of the first signal, or in other words, it can determine which set of power allocation coefficients or which power allocation method is used by the first signal in the frequency domain. According to the power allocation coefficient of the first signal in the frequency domain or which power allocation method, the power corresponding to the multiple frequency domain resource units included in the first signal in the frequency domain can be determined. For example, the power corresponding to at least two of the multiple frequency domain resource units included in the first signal is different.

[0165] S1030: The network device determines a power allocation coefficient of the first signal in the frequency domain according to a correspondence between the MCS of the first signal and the power allocation coefficient of the first signal in the frequency domain.

[0166] S1040: The network device sends the first signal to the terminal device according to the power allocation coefficient of the first signal and the MCS of the first signal.

[0167] S1050: The terminal device receives the first signal according to the power allocation coefficient of the first signal and the MCS of the first signal.

[0168] FIG11 is a schematic flow chart of another example of a communication method provided by the present application. In the example shown in FIG11 , an uplink signal is used as an example, that is, a terminal device sends a first signal to a network device. As shown in FIG11 , the method 1100 includes:

[0169] S1110, the network device sends indication information to the terminal device, where the indication information indicates the MCS of the first signal.

[0170] S1120: The terminal device determines the power allocation coefficient of the first signal in the frequency domain according to the correspondence between the MCS of the first signal and the power allocation coefficient of the first signal in the frequency domain.

[0171] S1130: The terminal device sends the first signal to the network device according to the power allocation coefficient of the first signal and the MCS of the first signal.

[0172] Accordingly, the network device receives the first signal according to the power allocation coefficient of the first signal and the MCS of the first signal.

[0173] For each step of method 1100, please refer to the description of the corresponding step in method 1000. For the sake of brevity, it will not be repeated here.

[0174] The communication method provided in the present application indicates or configures the power allocation coefficient or power allocation method of the signal in the frequency domain to the terminal device through the network device, and the power allocation coefficient or power allocation method of the signal in the frequency domain is determined according to the MCS of the signal. On the one hand, it enables the network device and the terminal device to more flexibly select the frequency domain power allocation method and adopt a more optimal frequency domain power allocation method, thereby improving the flexibility and reliability of the power allocation method of the signal in the frequency domain and improving the perception accuracy and resolution performance of the signal for the perception target. It also takes into account the communication performance of the signal, for example, it can improve the spectrum efficiency and coverage index of the signal, thereby improving the communication efficiency of the signal. By indicating the MCS of the signal to the terminal to implicitly indicate the power allocation coefficient of the signal in the frequency domain, there is no need to use additional signaling to indicate the power allocation coefficient of the signal in the frequency domain, thus saving signaling overhead and reducing the consumption of communication resources.

[0175] It should be understood that the above is only intended to help those skilled in the art better understand the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application. Based on the above examples given, those skilled in the art can obviously make various equivalent modifications or changes. For example, some steps in the above method embodiments may not be necessary, or some new steps may be added. Or a combination of any two or any multiple embodiments described above. Such modifications, changes, or combined solutions also fall within the scope of the embodiments of the present application.

[0176] It should also be understood that the division of the modes, situations, categories and embodiments in the embodiments of the present application is only for the convenience of description and should not constitute a special limitation. The features of various modes, categories, situations and embodiments can be combined without contradiction.

[0177] It should also be understood that the various numerical numbers involved in the embodiments of this application are only for the convenience of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence 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 this application.

[0178] It should also be understood that the above description of the embodiments of the present application focuses on emphasizing the differences between the various embodiments. The same or similar points that are not mentioned can be referenced with each other. For the sake of brevity, they will not be repeated here.

[0179] The method of the embodiment of the present application is described in detail above with reference to Figures 1 to 11. The communication device of the embodiment of the present application is described in detail below with reference to Figures 12 to 15.

[0180] In this embodiment, terminal devices and network devices can be divided into functional modules according to the above method. For example, each function can be divided into separate functional modules, or two or more functions can be integrated into a single processing module. The integrated modules can be implemented in hardware. It should be noted that the module division in this embodiment is illustrative and represents only a logical functional division. In actual implementation, other division methods may be used.

[0181] It should be noted that the relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module and will not be repeated here.

[0182] The terminal device and network device provided in the embodiments of the present application are used to execute any of the communication methods provided in the above method embodiments, and thus can achieve the same effect as the above implementation method. In the case of an integrated unit, the terminal device or network device may include a processing module, as well as an optional storage module and a communication module. Among them, the processing module can be used to control and manage the actions of the terminal device or network device. For example, it can be used to support the terminal device or network device to execute the steps performed by the processing unit. The storage module can be used to support the storage of program code and data, etc. The communication module can be used to support communication between the terminal device or network device and other devices.

[0183] The processing module may be a processor or a controller. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processing (DSP) and a microprocessor, and so on. The storage module may be a memory. The communication module may specifically be a device that interacts with other electronic devices, such as a radio frequency circuit, a Bluetooth chip, or the like.

[0184] Exemplarily, Figure 12 shows a schematic block diagram of a communication device 1200 of an embodiment of the present application. The communication device 1200 may correspond to the terminal device described in the above-mentioned methods 400, 500, 1000 and 1100, or may be a chip or component applied to the terminal device. Moreover, each module or unit in the communication device 1900 is respectively used to execute each action or processing process performed by the terminal device in any possible implementation of the above-mentioned method 800.

[0185] As shown in FIG12 , the communication device 1200 includes a transceiver unit 1210 and a processing unit 1220. The transceiver unit 1210 is configured to perform specific signal transmission and reception under the control of the processing unit 1220.

[0186] The transceiver unit 1210 is configured to: receive indication information, where the indication information is used to indicate a modulation and coding scheme MCS corresponding to the first signal;

[0187] The processing unit 1220 is configured to: determine, according to the indication information and the correspondence between the MCS and the power allocation coefficient, a power allocation coefficient of the first signal in the frequency domain, where the power allocation coefficient indicates power corresponding to at least two frequency domain resource units included in the first signal in the frequency domain, wherein the power corresponding to at least two frequency domain resource units of the at least two frequency domain resource units is different;

[0188] The transceiver unit 1210 is further configured to send or receive a first signal according to a power allocation coefficient under the control of the processing unit 1220 .

[0189] The communication device provided in an embodiment of the present application uses a network device to indicate the modulation and coding scheme (MCS) corresponding to a first signal, determines a frequency-domain power allocation coefficient for the first signal based on the MCS of the first signal, and further determines the powers corresponding to each of the multiple frequency-domain resource units included in the first signal. This enables the communication device to more flexibly select the frequency-domain power allocation method for the first signal, thereby improving the flexibility and reliability of the frequency-domain power allocation method for the first signal.

[0190] Furthermore, the powers corresponding to at least two of the multiple frequency domain resource units are different, i.e., the first signal is not distributed in a frequency domain uniformly. Since the first signal uses a frequency domain non-uniform power distribution in the frequency domain, the perception accuracy and resolution performance when using the first signal for perception can be improved, thereby improving the perception effect of the first signal on the perception target.

[0191] In addition, by indicating the MCS of the first signal to implicitly indicate the power allocation coefficient of the first signal in the frequency domain, the MCS of the first signal is reused, and there is no need to use additional signaling to indicate the power allocation coefficient of the first signal in the frequency domain, which saves signaling overhead, can reduce the consumption of communication resources, and improve the utilization of communication resources.

[0192] In some possible implementations, the correspondence between the MCS and the power allocation coefficient includes at least one of the following correspondences: the correspondence between the MCS index and the power allocation coefficient; the correspondence between the MCS modulation order and the power allocation coefficient; and the correspondence between the MCS modulation method and the power allocation coefficient.

[0193] In some possible implementations, among the at least two frequency domain resource units included in the first signal, the power of the frequency domain resource unit with a frequency in the middle region is greater than the power of the frequency domain resource units with a frequency on both sides; or, among the at least two frequency domain resource units, the power of the frequency domain resource unit with a frequency in the middle region is 0; or, among the at least two frequency domain resource units, the power of the frequency domain resource unit with a frequency in the middle region is less than the power of the frequency domain resource units with a frequency on both sides.

[0194] In some possible implementations, the indication information is carried in downlink control information DCI.

[0195] In some possible implementations, the first signal is a signal used for both communication and perception, or the first signal is a signal used for perception.

[0196] Furthermore, the communication device 1200 may also include a storage unit, and the transceiver unit 1210 may be a transceiver, an input / output interface, or an interface circuit. The storage unit is used to store instructions executed by the transceiver unit 1210 and the processing unit 1220. The transceiver unit 1210, the processing unit 1220, and the storage unit are coupled to each other. The storage unit stores instructions, the processing unit 1220 is used to execute the instructions stored in the storage unit, and the transceiver unit 1210 is used to perform specific signal transmission and reception under the control of the processing unit 1220.

[0197] It should be understood that the specific process of each unit in the communication device 1200 executing the above corresponding steps can be referred to the description of the terminal device in the above text in combination with the relevant embodiments of method 400, method 500, method 1000 and method 1100. For the sake of brevity, it is not repeated here.

[0198] It should be understood that the transceiver unit 1210 may be a transceiver, an input / output interface, or an interface circuit. The storage unit may be a memory. The processing unit 1220 may be implemented by a processor.

[0199] For example, as shown in FIG13 , communication device 1300 may include a processor 1310, a memory 1320, a transceiver 1330, and a bus system 1340. The various components of communication device 1300 are coupled together via bus system 1340. Bus system 1340, in addition to a data bus, may also include a power bus, a control bus, and a status signal bus. However, for clarity, various buses are labeled as bus system 1340 in FIG13 . For ease of illustration, FIG13 is only schematically illustrated.

[0200] The communication device 1200 shown in FIG12 or the communication device 1300 shown in FIG13 can implement the steps performed by the terminal device in the aforementioned methods 400, 500, 1000, and 1100. Similar descriptions can refer to the descriptions of the aforementioned corresponding methods. To avoid repetition, they are not repeated here.

[0201] It should also be understood that the communication device 1200 shown in Figure 12 or the communication device 1300 shown in Figure 13 can be a terminal device, or the terminal device can include the communication device 1200 shown in Figure 12 or the communication device 1300 shown in Figure 13.

[0202] For example, Figure 14 shows a schematic block diagram of a communication device 1400 of an embodiment of the present application. The communication device 1400 may correspond to the network device described in the above-mentioned methods 400, 500, 1000 and 1100, or may be a chip or component applied to the network device. Moreover, each module or unit in the communication device 1400 is respectively used to execute each action or processing process performed by the network device in any possible implementation of the above-mentioned methods 400, 500, 1000 and 1100.

[0203] As shown in Figure 14, the communication device 1400 may include a processing unit 1410 and a transceiver unit 1420. The transceiver unit 1420 is configured to perform specific signal transmission and reception under the control of the processing unit 1410. The processing unit may also be referred to as a processing module, and the transceiver unit may also be referred to as a communication unit or communication module.

[0204] The processing unit 1410 is used to: generate indication information, which is used to indicate the modulation coding mode MCS corresponding to the first signal, and the indication information is used to determine the power allocation coefficient of the first signal in the frequency domain, and the corresponding relationship between the MCS and the power allocation coefficient. The power allocation coefficient indicates the power corresponding to at least two frequency domain resource units included in the first signal in the frequency domain, wherein the power corresponding to at least two frequency domain resource units in the at least two frequency domain resource units is different.

[0205] The transceiver unit 1420 is used to send instruction information.

[0206] The transceiver unit 1420 is further configured to send or receive a first signal according to the power allocation coefficient under the control of the processing unit 1410 .

[0207] The communication device provided in the embodiment of the present application indicates the modulation and coding scheme (MCS) corresponding to the first signal to the terminal device, so that the terminal device can determine the power allocation coefficient of the first signal in the frequency domain based on the MCS of the first signal, and further determine the power corresponding to the multiple frequency domain resource units included in the first signal. This enables the terminal device to more flexibly select the power allocation method of the first signal in the frequency domain, thereby improving the flexibility and reliability of the power allocation method of the first signal in the frequency domain. The MCS of the first signal is reused, and there is no need to use additional signaling to indicate the power allocation coefficient of the first signal in the frequency domain, thus saving signaling overhead, reducing the consumption of communication resources, and improving the utilization rate of communication resources.

[0208] Furthermore, the powers corresponding to at least two of the multiple frequency domain resource units are different, i.e., the first signal is not distributed in a frequency domain uniformly. Since the first signal uses a frequency domain non-uniform power distribution in the frequency domain, the perception accuracy and resolution performance when using the first signal for perception can be improved, thereby improving the perception effect of the first signal on the perception target.

[0209] In some possible implementations, the correspondence between the MCS and the power allocation coefficient includes at least one of the following correspondences: the correspondence between the MCS index and the power allocation coefficient; the correspondence between the MCS modulation order and the power allocation coefficient; and the correspondence between the MCS modulation mode and the power allocation coefficient.

[0210] In some possible implementations, among the at least two frequency domain resource units included in the first signal, the power of the frequency domain resource unit with a frequency in the middle region is greater than the power of the frequency domain resource units with a frequency on both sides; or, among the at least two frequency domain resource units, the power of the frequency domain resource unit with a frequency in the middle region is 0; or, among the at least two frequency domain resource units, the power of the frequency domain resource unit with a frequency in the middle region is less than the power of the frequency domain resource units with a frequency on both sides.

[0211] In some possible implementations, the indication information is carried in downlink control information DCI.

[0212] In some possible implementations, the first signal is a signal used for both communication and perception, or the first signal is a signal used for perception.

[0213] It should be understood that the specific process of each unit in the communication device 1400 executing the above corresponding steps can be referred to the description of the network device related to the embodiments of method 400, method 500, method 1000 and method 1100 in the previous text. For the sake of brevity, it is not repeated here.

[0214] Optionally, the transceiver unit 1420 may include a receiving unit (module) and a sending unit (module), configured to execute the steps of the network device receiving information and sending information in the embodiment of the aforementioned method 800.

[0215] Furthermore, the communication device 1400 may also include a storage unit. The transceiver unit 1420 may be a transceiver, an input / output interface, or an interface circuit. The storage unit is configured to store instructions executed by the transceiver unit 1420 and the processing unit 1410. The transceiver unit 1420, the processing unit 1410, and the storage unit are coupled to each other. The storage unit stores instructions, the processing unit 1410 is configured to execute the instructions stored in the storage unit, and the transceiver unit 1420 is configured to perform specific signal transmission and reception under the control of the processing unit 1410.

[0216] It should be understood that the transceiver unit 1420 may be a transceiver, an input / output interface, or an interface circuit. The storage unit may be a memory. The processing unit 1410 may be implemented by a processor. As shown in FIG15 , the communication device 1500 may include a processor 1510, a memory 1520, and a transceiver 1530.

[0217] The communication device 1400 shown in FIG14 or the communication device 1500 shown in FIG15 can implement the steps performed by the network device in the aforementioned methods 400, 500, 1000, and 1100. Similar descriptions can refer to the descriptions of the aforementioned corresponding methods. To avoid repetition, they are not repeated here.

[0218] It should also be understood that the communication device 1400 shown in FIG. 14 or the communication device 1500 shown in FIG. 15 may be a network device, or a network device may include the communication device 1400 shown in FIG. 14 or the communication device 1500 shown in FIG. 15 .

[0219] It should also be understood that the division of units in the above device is merely a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. Moreover, the units in the device can all be implemented in the form of software called through processing elements; or all be implemented in the form of hardware; or some units can be implemented in the form of software called through processing elements, and some units can be implemented in the form of hardware. For example, each unit can be a separately established processing element, or it can be integrated into a certain chip of the device. In addition, it can also be stored in a memory in the form of a program, and called by a certain processing element of the device to execute the function of the unit. Here, the processing element can also be called a processor, which can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each unit above can be implemented by the integrated logic circuit of the hardware in the processor element or in the form of software called through the processing element.

[0220] In one example, the unit in any of the above devices may be one or more integrated circuits configured to implement the above method, such as one or more application specific integrated circuits (ASICs), one or more DSPs, one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms. For another example, when the unit in the device can be implemented in the form of a processing element scheduler, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call a program. For another example, these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0221] Figure 16 is a schematic diagram of the structure of a terminal device 1600 provided in this application. The aforementioned communication device 1200 or communication device 1300 can be configured in terminal device 1600. Alternatively, the communication device 1200 or communication device 1300 itself can be terminal device 1600. In other words, terminal device 1600 can perform the actions performed by the terminal device in method 800 described above. Optionally, for ease of illustration, Figure 16 only shows the main components of the terminal device. As shown in Figure 16, terminal device 1600 includes a processor, memory, control circuitry, an antenna, and input / output devices.

[0222] The processor is primarily used to process communication protocols and communication data, as well as control the entire terminal device, execute software programs, and process software program data, for example, to support the terminal device in executing the actions described in the above-mentioned communication method embodiments. The memory is primarily used to store software programs and data, such as the correspondence between the MCS of the first signal and the power allocation coefficient of the first signal in the frequency domain, the MCS of the first signal, and the like, as described in the above-mentioned embodiments. The control circuit is primarily used to convert baseband signals into radio frequency signals and to process radio frequency signals. The control circuit and antenna together can also be referred to as a transceiver, and are primarily used to transmit and receive radio frequency signals in the form of electromagnetic waves. For example, this includes receiving the indication information or the MCS of the first signal described in the above-mentioned embodiments. Input and output devices, such as a touch screen, display, and keyboard, are primarily used to receive user input and output data to the user.

[0223] When the terminal device is powered on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then transmits the RF signal to the outside in the form of electromagnetic waves through the antenna. When signaling (such as the above-mentioned indication information, etc.) is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0224] Those skilled in the art will appreciate that, for ease of explanation, FIG16 shows only one memory and processor. In an actual terminal device, multiple processors and memories may exist. The memory may also be referred to as a storage medium or storage device, etc., and this embodiment of the application does not limit this.

[0225] For example, a processor may include a baseband processor and a central processing unit (CPU). The baseband processor is primarily responsible for processing communication protocols and communication data, while the CPU is primarily responsible for controlling the entire terminal device, executing software programs, and processing data from software programs. The processor in Figure 16 integrates the functions of both a baseband processor and a CPU. Those skilled in the art will appreciate that the baseband processor and the CPU may also be independent processors interconnected via a bus or other technology. Those skilled in the art will appreciate that a terminal device may include multiple baseband processors to accommodate different network standards, multiple CPUs to enhance its processing capabilities, and that the various components of the terminal device may be connected via various buses. The baseband processor may also be referred to as a baseband processing circuit or a baseband processing chip. The CPU may also be referred to as a central processing circuit or a central processing chip. The functionality for processing communication protocols and communication data may be built into the processor or stored as a software program in a storage unit, with the processor executing the software program to implement the baseband processing functionality.

[0226] By way of example, in an embodiment of the present application, an antenna and a control circuit having transceiver functions may be regarded as the transceiver unit 1201 of the terminal device 1600, and a processor having a processing function may be regarded as the processing unit 1602 of the terminal device 1600. As shown in FIG16 , the terminal device 1600 includes a transceiver unit 1601 and a processing unit 1602. The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, etc. Optionally, the device for implementing the receiving function in the transceiver unit 1601 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 1601 may be regarded as a transmitting unit, that is, the transceiver unit 1601 includes a receiving unit and a transmitting unit. By way of example, the receiving unit may also be referred to as a receiver, a receiver, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0227] Figure 17 is a structural diagram of a network device 1700 provided in an embodiment of the present application, which can be used to implement the functions of the network device in the above method. The network device 1700 includes one or more radio frequency units, such as a remote radio unit (RRU) 1701 and one or more baseband units (BBU) (also known as digital units, DU) 1702. The RRU 1701 can be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and may include at least one antenna 17011 and a radio frequency unit 17012. The RRU 1701 part is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals into baseband signals, for example, for sending the indication information in the above embodiment to the terminal device. The BBU 1702 part is mainly used for baseband processing, controlling the base station, etc. The RRU 1701 and BBU 1702 can be physically set together or physically separated, that is, a distributed base station.

[0228] The BBU 1702 is the control center of the base station, which can also be called a processing unit. It is mainly used to perform baseband processing functions such as channel coding, multiplexing, modulation, spread spectrum, etc. For example, the BBU (processing unit) 1702 can be used to control the base station to execute the operation process of the network device in the above method embodiment.

[0229] In one example, the BBU 1702 can be composed of one or more single boards. Multiple single boards can jointly support a wireless access network with a single access standard (such as an LTE system or a 5G system), or can separately support wireless access networks with different access standards. The BBU 1702 also includes a memory 17021 and a processor 17022. The memory 17021 is used to store necessary instructions and data. For example, the memory 17021 stores the correspondence between the MCS of the first signal and the power allocation coefficient of the first signal in the frequency domain in the above embodiment, the MCS of the first signal, etc. The processor 17022 is used to control the base station to perform necessary actions, such as controlling the base station to execute the operation process of the network device in the above method embodiment. The memory 17021 and the processor 17022 can serve one or more single boards. That is, a memory and a processor can be separately set on each single board. Alternatively, multiple single boards can share the same memory and processor. In addition, necessary circuits can also be set on each single board.

[0230] In one possible implementation, with the development of system-on-chip (SoC) technology, all or part of the functions of parts 1702 and 1701 can be implemented using SoC technology. For example, they can be implemented using a base station function chip that integrates a processor, memory, antenna interface, and other components. Programs for base station-related functions are stored in the memory, and the processor executes the programs to implement the base station-related functions. Optionally, the base station function chip can also read memory external to the chip to implement the base station-related functions.

[0231] It should be understood that the structure of the network device illustrated in FIG17 is only one possible form and should not constitute any limitation to the embodiments of the present application. The present application does not exclude the possibility of other forms of base station structures that may appear in the future.

[0232] It should be understood that in the embodiments of the present application, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0233] It should also be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an EPROM, an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0234] An embodiment of the present application also provides a communication system, which includes: the above-mentioned terminal device and network device.

[0235] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented using software, the above embodiments 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 or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the process or function according to 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 devices. 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, computer, server or data center to another website, computer, server or data center by wired (e.g., infrared, wireless, microwave, etc.) means.

[0236] The present application also provides a computer-readable medium for storing computer program code, wherein the computer program includes instructions for executing any one of the communication methods provided in the above embodiments of the present application. The computer-readable medium may be the memory in the above examples, and the present application does not limit this.

[0237] The present application also provides a computer program product, which includes instructions. When the instructions are executed, the terminal device performs the terminal device operation corresponding to the above method, or the network device performs the network device operation corresponding to the above method.

[0238] The present application also provides a chip, comprising: a processing unit and a communication unit. The processing unit may be, for example, a processor, and the communication unit may be, for example, an input / output interface, a pin, or a circuit. The processing unit may execute computer instructions to cause the chip within the communication device to perform any of the communication methods provided in the embodiments of the present application.

[0239] Optionally, any one of the communication devices provided in the above embodiments of the present application may include this chip.

[0240] Optionally, the computer instructions are stored in a storage unit.

[0241] Optionally, the storage unit is a storage unit within the chip, such as a register, a cache, etc. The storage unit may also be a storage unit located outside the chip within the communication device, such as a ROM or other type of static storage device that can store static information and instructions, RAM, etc. The processor mentioned in any of the above may be a CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the program of the above-mentioned RRC signaling transmission method. The processing unit and the storage unit may be decoupled and respectively provided on different physical devices, and connected by wired or wireless means to implement the respective functions of the processing unit and the storage unit, so as to support the chip to implement the various functions in the above-mentioned embodiments. Alternatively, the processing unit and the memory may also be coupled on the same device.

[0242] The terms "system" and "network" are often used interchangeably in this document. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates an "or" relationship between the related objects.

[0243] Various objects such as various messages / information / equipment / systems / devices / actions / operations / processes that may appear in this application are named. It is understandable that these specific names do not constitute a limitation on the relevant objects. The names assigned may change with factors such as the scene, context or usage habits. The understanding of the technical meaning of the technical terms in this application should be mainly determined from the functions and technical effects embodied / executed in the technical solution.

[0244] Those skilled in the art will 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.

[0245] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the unit is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0246] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0247] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0248] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: The method comprises: receiving indication information, where the indication information is used to indicate a modulation and coding scheme (MCS) corresponding to the first signal; Determining, according to the indication information and a correspondence between the MCS and the power allocation coefficient, a power allocation coefficient of the first signal in the frequency domain, where the power allocation coefficient indicates powers corresponding to at least two frequency domain resource units included in the first signal in the frequency domain, wherein powers corresponding to at least two of the at least two frequency domain resource units are different; The first signal is sent or received according to the power allocation coefficient.

2. The method according to claim 1, characterized in that The correspondence between the MCS and the power allocation coefficient includes at least one of the following correspondences: The corresponding relationship between the MCS index and the power allocation coefficient; The corresponding relationship between the modulation order of the MCS and the power allocation coefficient; The corresponding relationship between the modulation mode of the MCS and the power allocation coefficient.

3. The method according to claim 1 or 2, characterized in that: In the at least two frequency domain resource units, the power of the frequency domain resource unit with a frequency in the middle region is greater than the power of the frequency domain resource units with frequencies on both sides; or, In the at least two frequency domain resource units, the power of the frequency domain resource unit in the middle frequency region is 0; or, In the at least two frequency-domain resource units, the power of the frequency-domain resource unit with a frequency in the middle region is smaller than the power of the frequency-domain resource units with frequencies on both sides.

4. The method according to any one of claims 1 to 3, characterized in that: The indication information is carried in downlink control information DCI.

5. The method according to any one of claims 1 to 4, characterized in that: The first signal is a signal used for both communication and perception, or the first signal is a signal used for perception.

6. A communication method, characterized in that: The method comprises: Sending indication information, where the indication information is used to indicate a modulation and coding scheme (MCS) corresponding to the first signal, and the indication information is used to determine a power allocation coefficient of the first signal in the frequency domain, where the power allocation coefficient indicates powers corresponding to at least two frequency domain resource units included in the first signal in the frequency domain, wherein a correspondence exists between the MCS and the power allocation coefficient, and at least two of the at least two frequency domain resource units have different powers corresponding to them; The first signal is sent or received according to the power allocation coefficient.

7. The method according to claim 6, characterized in that The correspondence between the MCS and the power allocation coefficient includes at least one of the following correspondences: The corresponding relationship between the MCS index and the power allocation coefficient; The corresponding relationship between the modulation order of the MCS and the power allocation coefficient; The corresponding relationship between the modulation mode of the MCS and the power allocation coefficient.

8. The method according to claim 6 or 7, characterized in that: In the at least two frequency domain resource units, the power of the frequency domain resource unit with a frequency in the middle region is greater than the power of the frequency domain resource units with frequencies on both sides; or, In the at least two frequency domain resource units, the power of the frequency domain resource unit in the middle frequency region is 0; or, In the at least two frequency-domain resource units, the power of the frequency-domain resource unit with a frequency in the middle region is smaller than the power of the frequency-domain resource units with frequencies on both sides.

9. The method according to any one of claims 6 to 8, characterized in that: The indication information is carried in downlink control information DCI.

10. The method according to any one of claims 6 to 9, characterized in that: The first signal is a signal used for both communication and perception, or the first signal is a signal used for perception.

11. A communication device, characterized in that: include: A unit for performing the steps of the method according to any one of claims 1 to 5, or a unit for performing the steps of the method according to any one of claims 6 to 10.

12. A communication device, characterized in that: The method comprises at least one processor and an interface circuit, wherein the at least one processor is configured to execute: the method according to any one of claims 1 to 5, or the method according to any one of claims 6 to 10.

13. A communication device, characterized in that: include: A processor, the processor being coupled to a memory, the memory being used to store a program or instruction, which, when executed by the processor, causes the apparatus to perform: the method according to any one of claims 1 to 5, or the method according to any one of claims 6 to 10.

14. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, which includes program instructions. When the program instructions are executed by a processor, the processor executes: the method according to any one of claims 1 to 5, or the method according to any one of claims 6 to 10.

15. A chip, characterized in that: The invention comprises: a processor configured to call and run a computer program from a memory, so that a communication device equipped with the chip executes: a method according to any one of claims 1 to 5, or a method according to any one of claims 6 to 10.

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